<SEC-DOCUMENT>0001193125-18-132751.txt : 20180426
<SEC-HEADER>0001193125-18-132751.hdr.sgml : 20180426
<ACCEPTANCE-DATETIME>20180426070708
ACCESSION NUMBER:		0001193125-18-132751
CONFORMED SUBMISSION TYPE:	10-Q
PUBLIC DOCUMENT COUNT:		70
CONFORMED PERIOD OF REPORT:	20180331
FILED AS OF DATE:		20180426
DATE AS OF CHANGE:		20180426

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNITIL CORP
		CENTRAL INDEX KEY:			0000755001
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		IRS NUMBER:				020381573
		STATE OF INCORPORATION:			NH
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-Q
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08858
		FILM NUMBER:		18776111

	BUSINESS ADDRESS:	
		STREET 1:		6 LIBERTY LANE WEST
		CITY:			HAMPTON
		STATE:			NH
		ZIP:			03842
		BUSINESS PHONE:		6037736504

	MAIL ADDRESS:	
		STREET 1:		6 LIBERTY LANE WEST
		CITY:			HAMPTON
		STATE:			NH
		ZIP:			03842
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-Q
<SEQUENCE>1
<FILENAME>d544531d10q.htm
<DESCRIPTION>10-Q
<TEXT>
<HTML><HEAD>
<TITLE>10-Q</TITLE>
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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="5"><B>UNITED STATES </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="5"><B>SECURITIES AND EXCHANGE COMMISSION </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B>WASHINGTON, D.C. 20549
</B></FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="5"><B>FORM <FONT STYLE="white-space:nowrap">10-Q</FONT> </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B>QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="3"><B>OF THE SECURITIES EXCHANGE ACT OF 1934 </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>For Quarter Ended March&nbsp;31,
2018 </B></FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Commission File Number <U><FONT STYLE="white-space:nowrap">1-8858</FONT></U> </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="6"><B>UNITIL CORPORATION </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="1"><I>(Exact name of registrant as specified in its charter) </I></FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>New Hampshire</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><FONT STYLE="white-space:nowrap">02-0381573</FONT></B></FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(State or other jurisdiction of</B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>incorporation or organization)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(I.R.S. Employer</B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="1"><B>Identification No.)</B></FONT></P></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>6 Liberty Lane West, Hampton, New Hampshire</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>03842-1720</B></FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Address of principal executive office)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Zip Code)</B></FONT></TD></TR>
</TABLE> <P STYLE="margin-top:24px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Registrant&#146;s telephone number, including area code: (603)
<FONT STYLE="white-space:nowrap">772-0775</FONT> </B></FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Indicate by check mark whether the registrant (1)&nbsp;has filed all reports required to
be filed by Section&nbsp;13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2)&nbsp;has been subject to such filing requirements
for the past 90 days.&nbsp;&nbsp;&nbsp;&nbsp;Yes<U></U>&nbsp;&nbsp;&#9746;&nbsp;&nbsp;&nbsp;&nbsp;No<U></U><U></U><U></U><U></U>&nbsp;&nbsp;&#9744; </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule
405 of Regulation <FONT STYLE="white-space:nowrap">S-T</FONT> (&#167;232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such
files).&nbsp;&nbsp;&nbsp;&nbsp;Yes&nbsp;&nbsp;&#9746;<U></U>&nbsp;&nbsp;&nbsp;&nbsp;No&nbsp;&nbsp;&#9744; </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Indicate by check mark whether the
registrant is a large accelerated filer, an accelerated filer, a <FONT STYLE="white-space:nowrap">non-accelerated</FONT> filer, or a smaller reporting company. See the definitions of &#147;large accelerated filer&#148;, &#147;accelerated filer&#148;
and &#147;smaller reporting company&#148; in Rule <FONT STYLE="white-space:nowrap">12b-2</FONT> of the Exchange Act. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD WIDTH="60%"></TD>
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<TD WIDTH="20%"></TD>
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<TD WIDTH="1%"></TD></TR>


<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Large&nbsp;accelerated&nbsp;filer</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#9744;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accelerated&nbsp;filer</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#9746;</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Non-accelerated filer</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#9744;&nbsp;&nbsp;(Do not check if a smaller reporting company)</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Smaller&nbsp;reporting&nbsp;company</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#9744;</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">Emerging growth company</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#9744;</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition
period for complying with any new or revised financial accounting standards provided pursuant to Section&nbsp;13(a) of the Exchange Act&nbsp;&nbsp;&#9744; </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Indicate by check mark whether the registrant is a shell company (as defined in Rule <FONT STYLE="white-space:nowrap">12b-2</FONT> of the Exchange
Act).&nbsp;&nbsp;&nbsp;&nbsp;Yes&nbsp;&nbsp;&#9744;&nbsp;&nbsp;&nbsp;&nbsp;No<U></U>&nbsp;&nbsp;&#9746;<U></U> </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Indicate the number of shares
outstanding of each of the issuer&#146;s classes of common stock, as of the latest practicable date. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TR>
<TD WIDTH="51%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="48%"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP ALIGN="center" STYLE="border-bottom:1px solid #000000"> <P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Class</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center" STYLE="border-bottom:1px solid #000000"> <P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Outstanding at April 23,
2018</B></FONT></P></TD></TR>


<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Common Stock, no par value</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>14,861,228 Shares</B></FONT></TD></TR>
</TABLE>

<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>UNITIL CORPORATION AND SUBSIDIARY COMPANIES </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>FORM <FONT STYLE="white-space:nowrap">10-Q</FONT> </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>For the Quarter Ended March&nbsp;31, 2018 </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="toc"></A>Table of
Contents </B></FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD WIDTH="82%"></TD>
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<TD></TD></TR>
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<TD COLSPAN="3" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Page No.</B></FONT></TD></TR>


<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top" COLSPAN="3"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Part I. Financial Information</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Item&nbsp;1.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Financial Statements (Unaudited)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
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<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_1">Consolidated Statements of Earnings - Three Months Ended March&nbsp;31, 2018 and 2017</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">21</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_2">Consolidated Balance Sheets, March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31,
2017</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="white-space:nowrap">22-23</FONT></FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_3">Consolidated Statements of Cash Flows - Three Months Ended March&nbsp;31, 2018 and 2017</A></FONT></P></TD>

<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">24</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_4">Consolidated Statements of Changes in Common Stock Equity &#150; Three Months Ended March&nbsp;
31, 2018 and&nbsp;2017</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">25</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
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<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_5">Notes to Consolidated Financial Statements</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="white-space:nowrap">26-52</FONT></FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Item&nbsp;2.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_6">Management&#146;s Discussion and Analysis of Financial Condition and Results of
Operations</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="white-space:nowrap">4-20</FONT></FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Item&nbsp;3.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_7">Quantitative and Qualitative Disclosures About Market Risk</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">53</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Item&nbsp;4.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_8">Controls and Procedures</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">53</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8" COLSPAN="5"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top" COLSPAN="5"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Part II. Other Information</B></FONT></P></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Item&nbsp;1.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_9">Legal Proceedings</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">54</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Item&nbsp;1A.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_10">Risk Factors</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">54</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Item&nbsp;2.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_11">Unregistered Sales of Equity Securities and Use of Proceeds</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">54</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Item&nbsp;3.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_12">Defaults Upon Senior Securities</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Inapplicable</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Item&nbsp;4.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_13">Mine Safety Disclosures</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Inapplicable</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Item&nbsp;5.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_14">Other Information</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">55</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Item&nbsp;6.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_15">Exhibits</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">56</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx544531_16">Signatures</A></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">57</FONT></TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">2 </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CAUTIONARY STATEMENT </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">This report and the documents incorporated by reference into this report contain statements that constitute &#147;forward-looking statements&#148; within the meaning of Section&nbsp;27A of the Securities
Act of 1933, Section&nbsp;21E of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical fact, included or incorporated by reference into this
report, including, without limitation, statements regarding the financial position, business strategy and other plans and objectives for the Company&#146;s future operations, are forward-looking statements. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">These statements include declarations regarding the Company&#146;s beliefs and current expectations. In some cases, forward-looking statements can be
identified by terminology such as &#147;may,&#148; &#147;will,&#148; &#147;should,&#148; &#147;expects,&#148; &#147;plans,&#148; &#147;anticipates,&#148; &#147;believes,&#148; &#147;estimates,&#148; &#147;predicts,&#148; &#147;potential&#148; or
&#147;continue,&#148; or the negative of such terms or other comparable terminology. These forward-looking statements are subject to inherent risks and uncertainties in predicting future results and conditions that could cause the actual results to
differ materially from those projected in these forward-looking statements. Some, but not all, of the risks and uncertainties include those described in Item&nbsp;1A (Risk Factors) and the following: </FONT></P>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">the Company&#146;s regulatory environment (including regulations relating to climate change, greenhouse gas emissions and other environmental matters),
which could affect the rates the Company is able to charge, the Company&#146;s authorized rate of return and the Company&#146;s ability to recover costs in its rates; </FONT></P></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">fluctuations in the supply of, demand for, and the prices of energy commodities and transmission capacity and the Company&#146;s ability to recover
energy commodity costs in its rates; </FONT></P></TD></TR></TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">customers&#146; preferred energy sources; </FONT></P></TD></TR></TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">severe storms and the Company&#146;s ability to recover storm costs in its rates; </FONT></P></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">the Company&#146;s stranded electric generation and generation-related supply costs and the Company&#146;s ability to recover stranded costs in its
rates; </FONT></P></TD></TR></TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">declines in the valuation of capital markets, which could require the Company to make substantial cash contributions to cover its pension obligations,
and the Company&#146;s ability to recover pension obligation costs in its rates; </FONT></P></TD></TR></TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">general economic conditions, which could adversely affect (i)&nbsp;the Company&#146;s customers and, consequently, the demand for the Company&#146;s
distribution services, (ii)&nbsp;the availability of credit and liquidity resources and (iii)&nbsp;certain of the Company&#146;s counterparties&#146; obligations (including those of its insurers and lenders); </FONT></P></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">the Company&#146;s ability to obtain debt or equity financing on acceptable terms; </FONT></P></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">increases in interest rates, which could increase the Company&#146;s interest expense; </FONT></P></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">restrictive covenants contained in the terms of the Company&#146;s and its subsidiaries&#146; indebtedness, which restrict certain aspects of the
Company&#146;s business operations; </FONT></P></TD></TR></TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">variations in weather, which could decrease demand for the Company&#146;s distribution services; </FONT></P></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">long-term global climate change, which could adversely affect customer demand or cause extreme weather events that could disrupt the Company&#146;s
electric and natural gas distribution services; </FONT></P></TD></TR></TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">3 </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>


<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">numerous hazards and operating risks relating to the Company&#146;s electric and natural gas distribution activities, which could result in accidents
and other operating risks and costs; </FONT></P></TD></TR></TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">catastrophic events; </FONT></P></TD></TR></TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">the Company&#146;s ability to retain its existing customers and attract new customers; </FONT></P></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">the Company&#146;s energy brokering customers&#146; performance under multi-year energy brokering contracts; and </FONT></P></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">increased competition. </FONT></P></TD></TR></TABLE>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Many of these risks are beyond the Company&#146;s control. Any forward-looking statements speak only as of the date of this report, and the Company
undertakes no obligation to update any forward-looking statements to reflect events or circumstances after the date on which such statements are made or to reflect the occurrence of unanticipated events. New factors emerge from time to time, and it
is not possible for the Company to predict all of these factors, nor can the Company assess the impact of any such factor on its business or the extent to which any factor, or combination of factors, may cause results to differ materially from those
contained in any forward-looking statements. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>PART I. FINANCIAL INFORMATION </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B><I><A NAME="tx544531_6"></A>Item&nbsp;2. Management&#146;s Discussion and Analysis of Financial Condition and Results of Operations (MD&amp;A) </I></B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>OVERVIEW </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil Corporation (Unitil or
the Company) is a public utility holding company headquartered in Hampton, New Hampshire. Unitil is subject to regulation as a holding company system by the Federal Energy Regulatory Commission (FERC) under the Energy Policy Act of 2005. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil&#146;s principal business is the local distribution of electricity and natural gas throughout its service territory in the states of New
Hampshire, Massachusetts and Maine. Unitil is the parent company of three wholly-owned distribution utilities: </FONT></P> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">i)</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil Energy Systems, Inc. (Unitil Energy), which provides electric service in the southeastern seacoast and state capital regions of New Hampshire, including the
capital city of Concord; </FONT></TD></TR></TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">ii)</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Fitchburg Gas and Electric Light Company (Fitchburg), which provides both electric and natural gas service in the greater Fitchburg area of north central Massachusetts;
and </FONT></TD></TR></TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">iii)</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Northern Utilities, Inc. (Northern Utilities), which provides natural gas service in southeastern New Hampshire and portions of southern and central Maine, including
the city of Portland, which is the largest city in northern New England. </FONT></TD></TR></TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil Energy, Fitchburg and Northern Utilities are
collectively referred to as the &#147;distribution utilities.&#148; Together, the distribution utilities serve approximately 105,000 electric customers and 81,300 natural gas customers in their service territory. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">4 </FONT></P>


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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In addition, Unitil is the parent company of Granite State Gas Transmission, Inc. (Granite State), an
interstate natural gas transmission pipeline company, operating 86 miles of underground gas transmission pipeline primarily located in Maine and New Hampshire. Granite State provides Northern Utilities with interconnection to major natural gas
pipelines and access to domestic natural gas supplies in the south and Canadian natural gas supplies in the north.</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil had an investment in
Net Utility Plant of $972.4&nbsp;million at March&nbsp;31, 2018. Unitil&#146;s total operating revenue includes revenue to recover the approved cost of purchased electricity and natural gas in rates on a fully reconciling basis. As a result of this
reconciling rate structure, the Company&#146;s earnings are not directly affected by changes in the cost of purchased electricity and natural gas. Earnings from Unitil&#146;s utility operations are primarily derived from the return on investment in
the utility assets of the three distribution utilities and Granite State. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil also conducts
<FONT STYLE="white-space:nowrap">non-regulated</FONT> operations principally through Usource Inc. and Usource L.L.C. (collectively, Usource), which is wholly-owned by Unitil Resources Inc., a wholly-owned subsidiary of Unitil. Usource provides
energy brokering and advisory services to large commercial and industrial customers (C&amp;I) primarily in the northeastern United States. The Company&#146;s other subsidiaries include Unitil Service Corp., which provides, at cost, a variety of
administrative and professional services to Unitil&#146;s affiliated companies, Unitil Realty Corp. (Unitil Realty), which owns and manages Unitil&#146;s corporate office building and property located in Hampton, New Hampshire and Unitil Power
Corp., which formerly functioned as the full requirements wholesale power supply provider for Unitil Energy. Unitil&#146;s consolidated net income includes the earnings of the holding company and these subsidiaries. </FONT></P>
<P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>RATES AND REGULATION </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Regulation
</B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil is subject to comprehensive regulation by federal and state regulatory authorities. Unitil and its subsidiaries are subject to
regulation as a holding company system by the FERC under the Energy Policy Act of 2005 with regard to certain bookkeeping, accounting and reporting requirements. Unitil&#146;s utility operations related to wholesale and interstate energy business
activities are also regulated by the FERC. Unitil&#146;s distribution utilities are subject to regulation by the applicable state public utility commissions, with regard to their rates, issuance of securities and other accounting and operational
matters: Unitil Energy is subject to regulation by the New Hampshire Public Utilities Commission (NHPUC); Fitchburg is subject to regulation by the Massachusetts Department of Public Utilities (MDPU); and Northern Utilities is regulated by the NHPUC
and the Maine Public Utilities Commission (MPUC). Granite State, Unitil&#146;s interstate natural gas transmission pipeline, is subject to regulation by the FERC with regard to its rates and operations. Because Unitil&#146;s primary operations are
subject to rate regulation, the regulatory treatment of various matters could significantly affect the Company&#146;s operations and financial position. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Unitil&#146;s distribution utilities deliver electricity and/or natural gas to all customers in their service territory, at rates established under cost of service regulation. Under this regulatory
structure, Unitil&#146;s distribution utilities recover the cost of providing distribution service to their customers based on a historical test year, and earn a return on their capital investment in utility assets. In addition, the Company&#146;s
distribution utilities and its natural gas transmission pipeline company may also recover certain base rate costs, including capital project spending and enhanced reliability and vegetation management programs, through annual step adjustments and
cost tracker rate mechanisms. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Fitchburg is subject to revenue decoupling. Revenue decoupling is the term given to the elimination of the
dependency of a utility&#146;s distribution revenue on the volume of electricity or natural gas sales. The difference between distribution revenue amounts billed to customers and the targeted revenue decoupling amounts is recognized as an increase
or a decrease in Accrued </FONT></P>
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Revenue which forms the basis for resetting rates for future cash recoveries from, or credits to, customers. These revenue decoupling targets may be adjusted as a result of rate cases and other
authorized adjustments that the Company files with the MDPU. The Company estimates that revenue decoupling applies to approximately 27% and 11% of Unitil&#146;s total annual electric and natural gas sales volumes, respectively. </FONT></P>
<P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Tax Cuts and Jobs Act of 2017 </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">At the
end of December 2017, the United States Congress voted and the President signed into law major federal tax law changes Tax Cuts and Jobs Act of 2017 (TCJA) effective for tax year 2018. Among other things, the TCJA substantially reduces the corporate
income tax rate to 21&nbsp;percent, effective January&nbsp;1, 2018. Each state public utility commission, with jurisdiction over the areas that are served by Unitil&#146;s electric and gas subsidiary companies, has or is in the process of issuing
procedural orders directing how the tax law changes are to be reflected in rates, including requiring that the companies provide certain filings and calculations. Unitil is fully complying with these orders and will make any necessary changes to its
rates as directed by the commissions. The FERC has opened a rulemaking proceeding on this matter (described below). The Company believes that the ultimate resolution of these matters will not have a material impact on its financial position,
operating results or cash flows. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In Maine, Northern Utilities&#146; Maine division has recently completed a base rate case (described more
fully below). The MPUC had issued a procedural order indicating that the tax law changes were to be reflected in its calculation of final rates for the Company, and the final order in that docket incorporated the lower tax rates. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In New Hampshire, Northern Utilities&#146; New Hampshire division has a base rate case proceeding pending (described below), and the NHPUC issued an
order directing the Company to show how the tax changes can be effected within the schedule for the rate case. On April&nbsp;6, 2018, Northern Utilities filed a proposed comprehensive settlement agreement among the Company, the Staff of the Public
Utilities Commission and the Office of Consumer Advocate which includes the effect of the tax changes in the calculation of the agreed upon revenue requirement. With respect to Unitil Energy, the NHPUC directed the Company to make a filing by
April&nbsp;1, 2018, showing the effect of the tax law changes on rates. On March&nbsp;16, 2018, the Company filed for its annual step increase pursuant to the provisions of its last base rate case, and included in that filing proposed adjustments to
account for the tax changes. This proposal remains pending. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In Massachusetts, the Attorney General filed a petition with the MDPU requesting
that it open an investigation to require the flow-through of the tax law changes in rates for all utilities subject to the MDPU&#146;s jurisdiction. On February&nbsp;2, 2018 the MDPU issued an order opening an investigation into the effect on rates
of the decrease in the federal corporate income tax rate on the MDPU&#146;s regulated utilities. The MDPU consolidated the Attorney General&#146;s petition into its investigation. In its order, the MDPU required each utility company subject to its
jurisdiction to file, by May&nbsp;1, 2018, a proposal to address the effects of the TCJA and to reduce its rates through the establishment of a revised cost of service incorporating the lower federal corporate income tax rate as of January&nbsp;1,
2018. Such proposals must address the adjustment of rates going forward and also incorporate the timely refund of revenues associated with the lower tax expense on current income and excess accumulated deferred income taxes (ADIT). Fitchburg plans
to submit filings for both its gas and electric divisions with estimated revenue reductions of $0.8 million at each respective division. This matter remains pending. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">On March&nbsp;15, 2018, the FERC issued a Notice of Proposed Rulemaking (NOPR) that would allow it to determine which pipelines under the Natural Gas Act may be collecting unjust and unreasonable rates in
light of the corporate tax rate reduction and changes to the FERC&#146;s income tax allowance policies. The proposed rule, if adopted, would require an interstate pipeline to file a </FONT></P>
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<FONT STYLE="white-space:nowrap">one-time</FONT> report on the regulated rate effect of the new tax law and changes to the FERC&#146;s income tax allowance policies. In addition to filing the <FONT
STYLE="white-space:nowrap">one-time</FONT> report, each pipeline would have four options: 1) make a limited rate filing to reduce its rates by the percentage reduction in its cost of service shown in its report; 2) commit to file either a
prepackaged uncontested rate settlement or a general rate case by December&nbsp;31, 2018; 3) file a statement explaining why it believes its current rates are reasonable and no reduction is necessary; or 4) file the required report without taking
any other action, at which point FERC would consider whether to initiate an investigation. Granite State is reviewing the NOPR and will comply with all FERC requirements. Granite State believes that the ultimate resolution of these matters will not
have a material impact on its financial position, operating results or cash flows. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Rate Case Activity </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Unitil Energy &#150; Base Rates &#150; </B>On April&nbsp;20, 2017 the NHPUC issued its final order approving a settlement between Unitil Energy, NHPUC
Staff and the Office of Consumer Advocate providing for a permanent increase of $4.1&nbsp;million in electric base rates, and a three year rate plan with an additional rate step adjustment, effective May&nbsp;1, 2017, of $0.9&nbsp;million, followed
by two rate step adjustments in May of 2018 and 2019 to recover the revenue requirements associated with annual capital expenditures as defined under the rate plan. On March&nbsp;16, 2018, Unitil Energy filed its second step adjustment. The filing
also incorporated the revenue requirement effect of the federal tax decrease pursuant to the TCJA, along with the termination of the <FONT STYLE="white-space:nowrap">one-year</FONT> reconciliation adjustment which had recouped the difference between
temporary rates and final rates. The net effect of the three adjustments results in a proposed revenue decrease of $0.4&nbsp;million. The proposal remains pending. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg &#150; Base Rates &#150; Electric &#150; </B>On April&nbsp;29, 2016 the MDPU issued an order approving a $2.1&nbsp;million increase in Fitchburg&#146;s electric base revenue decoupling
target, effective May&nbsp;1, 2016. As part of its order, the MDPU approved, with modifications, Fitchburg&#146;s request for an annual capital cost recovery mechanism, which allows for increases to target revenues to recover the revenue requirement
associated with capital additions as defined under the mechanism. In 2016, Fitchburg filed its first compliance report on capital investments for calendar year 2015. The MDPU approved the recovery of approximately $0.5&nbsp;million, effective
January&nbsp;1, 2017, subject to further investigation and reconciliation. On December&nbsp;18, 2017, the MDPU approved Fitchburg&#146;s calendar year 2015 capital investments and associated revenue requirements for recovery. On June&nbsp;29, 2017,
Fitchburg filed its compliance report on capital investments for calendar year 2016. On December&nbsp;20, 2017, the MDPU approved the recovery of approximately $0.4&nbsp;million, effective January&nbsp;1, 2018, subject to further investigation and
reconciliation. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg &#150; Base Rates &#150; Gas &#150; </B>On April&nbsp;29, 2016, the MDPU issued an order approving a
$1.6&nbsp;million increase in Fitchburg&#146;s gas base revenue decoupling target, effective May&nbsp;1, 2016. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg &#150; Gas
Operations &#150; </B>On October&nbsp;31, 2016, Fitchburg submitted its annual filing under its gas system enhancement program to recover the revenue requirements associated with its projected capital additions in 2017 as defined under the program.
The filing sought approval to collect an additional $0.9&nbsp;million of annual revenue requirements. On April&nbsp;28, 2017, the MDPU approved recovery of the projected 2017 revenue requirements, subject to reconciliation and a cap of 1.5% on the
change in revenue requirement to be billed in any given year. The cap resulted in approval of an additional $0.5&nbsp;million of annual revenue requirements to be billed effective May&nbsp;1, 2017 with the remaining $0.4&nbsp;million of annual
revenue requirements deferred for billing in future periods. In its April&nbsp;28, 2017 annual reconciliation filing for 2016 revenue requirements, the Company requested that the MDPU waive the 1.5% revenue requirement cap. On October&nbsp;31, 2017,
the MDPU approved a <FONT STYLE="white-space:nowrap">one-year</FONT> waiver of the cap and allowed the Company to bill the total 2016 actual reconciliation balance. On October&nbsp;31, 2017, Fitchburg submitted its annual filing under the program to
recover the revenue requirements associated with its projected capital additions in 2018. In this filing, the Company has requested to change the revenue requirements cap to 3%. This matter remains pending. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">7 </FONT></P>


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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northern Utilities &#150; Base Rates &#150; Maine &#150; </B>In May 2017, Northern Utilities filed a base
rate case with the MPUC seeking to increase annual revenues by $6.0&nbsp;million. The requested increase was subsequently supplemented by an additional $0.7&nbsp;million associated with the Company&#146;s Targeted Area
<FONT STYLE="white-space:nowrap">Build-out</FONT> (TAB) Program (see below). In addition to the distribution base rate increase, Northern Utilities requested to extend its Targeted Infrastructure Replacement Adjustment mechanism (TIRA) (see below).
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">On February&nbsp;28, 2018 the MPUC issued its Final Order (Order) in the base rate case. The Order provides for a revenue increase of
$2.1&nbsp;million offset by a revenue decrease of $2.2&nbsp;million to incorporate the effect of the lower federal income tax rate under the TCJA, resulting in an overall annual revenue decrease of $0.1&nbsp;million. The MPUC approved a return on
equity of 9.5&nbsp;percent and a capital structure reflecting 50&nbsp;percent equity and 50&nbsp;percent long-term debt. The Order also provides for a reduction in annual depreciation expense reducing the Company&#146;s annual operating costs by
approximately $0.5&nbsp;million. The Order addresses a number of other issues including a change to therm billing, increases in other delivery charges, and cost recovery under the Company&#146;s TAB Program and TIRA mechanism. The new rates and
other changes became effective as of March&nbsp;1, 2018. On March&nbsp;16, 2018, the Company filed a Motion for Clarification requesting the MPUC clarify its Order in light of what the Company believes to be an inadvertent inconsistency with the
Order regarding 2016 TIRA Eligible Facilities, rate base and related annual revenue adjustments. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northern Utilities &#150; Targeted
Infrastructure Replacement Adjustment &#150; Maine &#150; </B>The settlement in Northern Utilities&#146; Maine division&#146;s 2013 rate case allowed the Company to implement a TIRA rate mechanism to adjust base distribution rates annually to
recover the revenue requirements associated with targeted investments in gas distribution system infrastructure replacement and upgrade projects, including the Company&#146;s Cast Iron Replacement Program (CIRP). The TIRA had an initial term of four
years and covered targeted capital expenditures in 2013 through 2016. In its Order in the current base rate case (see above), the MPUC approved an extension of the Company&#146;s TIRA mechanism, with revision, for an additional eight-year period,
which will allow for annual rate adjustments through the end of the CIRP program. On March&nbsp;30, 2018, the Company filed its request to increase its annual base rates to recover the revenue requirements for 2017 Eligible Facilities. This matter
remains pending. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northern Utilities &#150; Targeted Area <FONT STYLE="white-space:nowrap">Build-out</FONT> Program &#150; Maine &#150;
</B>In December 2015, the MPUC approved a TAB program and associated rate surcharge mechanism. This program is designed to allow the economic extension of natural gas mains to new, targeted service areas in Maine. It allows customers in the targeted
area the ability to pay a rate surcharge, instead of a large upfront payment or capital contribution to connect to the natural gas delivery system. The initial pilot of the TAB program was approved for the City of Saco, and is being built out over a
period of three years, with the potential to add 1,000 new customers and approximately $1&nbsp;million in annual distribution revenue in the Saco area. A second TAB program was approved for the Town of Sanford, and has the potential to add 2,000 new
customers and approximately $2&nbsp;million in annual distribution revenue in the Sanford area. In its base rate case Order (above), the MPUC approved the inclusion of Saco TAB investments in rate base along with a cost recovery incentive mechanism
for future TAB investments. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northern Utilities &#150; Base Rates &#150; New Hampshire &#150; </B>On June&nbsp;5, 2017, Northern Utilities
filed for a base rate increase with the NHPUC seeking to increase annual revenues by $4.7&nbsp;million. On June&nbsp;15, 2017, the NHPUC suspended the Company&#146;s proposed permanent rates tariffs while the filing is under regulatory review
</FONT></P>
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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Northern Utilities reached a settlement agreement on temporary rates to produce an increase in annual
revenues of approximately $1.6&nbsp;million, effective with service rendered on and after August&nbsp;1, 2017, and until a final, <FONT STYLE="white-space:nowrap">non-appealable</FONT> order on permanent rates is issued. The settlement agreement was
approved by the NHPUC on July&nbsp;31, 2017. As of March&nbsp;31, 2018, Northern Utilities has deferred approximately $1.1&nbsp;million of costs associated with this base rate case. Once a final decision on permanent rates is issued, it will be
reconciled back to the date that temporary rates were implemented. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">On April&nbsp;6, 2018, Northern Utilities filed a proposed comprehensive
settlement agreement among the Company, the NHPUC Staff and the Office of the Consumer Advocate. The settling parties agreed to an annual revenue increase of $2.6&nbsp;million and an offsetting decrease of $1.7&nbsp;million to reflect the effect of
the TCJA, for a net annual revenue increase of $0.9&nbsp;million, effective May&nbsp;1, 2018. The parties also agreed to a step increase of $2.3&nbsp;million to recover post-test year capital investments, also effective May&nbsp;1, 2018. Under the
agreement, the company may file for a second step increase for effect May&nbsp;1, 2019 to recover eligible capital investments in 2018, up to a revenue requirement cap of $2.2&nbsp;million. If the company chooses the option to implement the second
step increase, the next distribution base rate case shall be based on an historic test year of no earlier than twelve months ending December&nbsp;31, 2020. A hearing before the NHPUC to consider the settlement agreement was held on April&nbsp;12,
2018. This matter remains pending. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northern Utilities &#150; Pipeline Refund &#150; </B>On February&nbsp;19, 2015, the FERC issued Opinion
<FONT STYLE="white-space:nowrap">No.&nbsp;524-A,</FONT> the final order in Portland Natural Gas Transmission&#146;s (PNGTS) Section&nbsp;4 rate case, requiring PNGTS to issue refunds to shippers. Northern Utilities received a pipeline refund of
$22.0&nbsp;million on April&nbsp;15, 2015. As a gas supply-related refund, the entire amount refunded will be credited to Northern Utilities&#146; customers and marketers over three years as directed by the NHPUC and MPUC. As of March&nbsp;31, 2018,
$21.4&nbsp;million has been refunded to Northern Utilities&#146; customers and marketers. The Company has recorded current Regulatory Liabilities related to these refunds of $0.6&nbsp;million on its Consolidated Balance Sheets as of March&nbsp;31,
2018. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Granite State &#150; Base Rates &#150; </B>Granite State has in place a FERC-approved second amended settlement agreement under
which it is permitted to file annually, each June, for a rate adjustment to recover the revenue requirements associated with specified capital investments in gas transmission projects up to a specific cap on expenditures. On June&nbsp;21, 2017
Granite State filed for an annual revenue increase under this provision of $0.2&nbsp;million, effective August&nbsp;1, 2017. The FERC issued an order approving the filing on July&nbsp;28, 2017. This is the last annual rate adjustment allowed under
the second amended settlement because Granite must file a general rate case pursuant to Section&nbsp;4 of the Natural Gas Act by April&nbsp;30, 2018 with rates effective no later than November&nbsp;1, 2018. </FONT></P>
<P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>RESULTS OF OPERATIONS </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The following
section of MD&amp;A compares the results of operations for each of the two fiscal periods ended March&nbsp;31, 2018 and March&nbsp;31, 2017 and should be read in conjunction with the accompanying unaudited Consolidated Financial Statements and the
accompanying Notes to unaudited Consolidated Financial Statements included in Part I, Item 1 of this report, which are prepared in accordance with accounting principles generally accepted in the United States of America (GAAP). </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company&#146;s results of operations reflect the seasonal nature of the natural gas business. Annual gas revenues are substantially realized during
the heating season as a result of higher sales of natural gas due to cold weather. Accordingly, the results of operations are historically most favorable in the first and fourth quarters. Fluctuations in seasonal weather conditions may have a
significant effect on the result of operations. Sales of electricity are generally less sensitive </FONT></P>
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to weather than natural gas sales, but may also be affected by the weather conditions in both the winter and summer seasons. Also, as a result of recent rate cases, the Company&#146;s natural gas
sales margins are derived from a higher percentage of fixed billing components, including customer charges. Therefore, natural gas revenues and margin will be less affected by the seasonal nature of the natural gas business. In addition, as
previously discussed, approximately 27% and 11% of the Company&#146;s total annual electric and natural gas sales volumes, respectively, are decoupled and changes in sales to existing customers do not affect sales margin. </FONT></P>
<P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Earnings Overview </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company&#146;s
Net Income was $15.6&nbsp;million, or $1.06 per share, for the first quarter of 2018, an increase of $3.2&nbsp;million in Net Income, and $0.18 in Earnings Per Share, compared to the first quarter of 2017. The Company&#146;s earnings in the first
quarter of 2018 were driven by higher natural gas and electric sales margins, reflecting: customer growth, colder winter weather and new distribution rates compared to the first quarter of 2017. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Natural gas sales margin was $39.9&nbsp;million in the three months ended March&nbsp;31, 2018, an increase of $1.9&nbsp;million compared to the same
period in 2017. Gas sales margin in the first quarter of 2018 was positively affected by colder weather and customer growth of $1.8&nbsp;million and higher natural gas distribution rates of $1.6&nbsp;million, partially offset by lower revenue of
$1.5&nbsp;million to account for the reduction in rates due to the lower corporate income tax rate of 21% under the TCJA. The reduction in revenues also reflects a lower provision for income taxes. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Natural gas therm sales increased 9.5% in the three months ended March&nbsp;31, 2018 compared to the same period in 2017. Based on weather data collected
in the Company&#146;s natural gas service areas, there were 10% more HDD in the first quarter of 2018 compared to the same period in 2017. As of March&nbsp;31, 2018, the number of total natural gas customers served has increased by 1,478 in the last
twelve months. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Electric sales margin was $22.3&nbsp;million in the three months ended March&nbsp;31, 2018, an increase of $0.3&nbsp;million
compared to the same period in 2017. Electric sales margin in the first quarter of 2018 was positively affected by higher electric distribution rates of $0.9&nbsp;million as well as colder weather and customer growth of $0.2&nbsp;million, partially
offset by lower revenue of $0.8&nbsp;million to account for the reduction in rates due to the lower corporate income tax rate of 21% under the TCJA. The reduction in revenues also reflects a lower provision for income taxes. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total electric kWh sales increased 5.8% compared to the first quarter of 2017. As of March&nbsp;31, 2018, the number of total electric customers served
has increased by 516 in the last twelve months. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Operation&nbsp;and Maintenance (O&amp;M) expenses increased $1.3&nbsp;million in the three
months ended March&nbsp;31, 2018 compared to the same period in 2017. The change in O&amp;M expenses reflects an increase in compensation and benefit costs of $0.7&nbsp;million, bad debt expenses of $0.2&nbsp;million and utility operating costs of
$0.4&nbsp;million. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Depreciation and Amortization expense decreased $0.2&nbsp;million in the three months ended March&nbsp;31, 2018 compared
to the same period in 2017, reflecting lower amortization of deferred major storm costs, partially offset by higher utility plant in service and amortization of information system and software costs. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Taxes Other Than Income Taxes increased $0.3&nbsp;million in the three months ended March&nbsp;31, 2018 compared to the same period in 2017, primarily
reflecting higher local property taxes on higher levels of utility plant assets in service. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">10 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest Expense, net was essentially unchanged in the three months ended March&nbsp;31, 2018 compared to
the same period in 2017, reflecting higher interest on long-term debt offset by lower net interest expense on net regulatory assets/liabilities and lower levels of short-term debt. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Federal and State Income Taxes decreased by $2.9&nbsp;million for the three months ended March&nbsp;31, 2018 compared to the same period in 2017, reflecting $2.3&nbsp;million from a lower tax rate on
higher <FONT STYLE="white-space:nowrap">pre-tax</FONT> earnings in Q1 2018 (see revenue discussion above) and the current tax benefit of $0.6&nbsp;million on book/tax items not previously included in customers&#146; utility rates. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">At its January 2018 and April 2018 meetings, the Unitil Corporation Board of Directors declared quarterly dividends on the Company&#146;s common stock of
$0.365 per share. These quarterly dividends result in a current effective annualized dividend rate of $1.46 per share, representing an unbroken record of quarterly dividend payments since trading began in Unitil&#146;s common stock. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">A more detailed discussion of the Company&#146;s results of operations for the three months ended March&nbsp;31, 2018 is presented below. </FONT></P>
<P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Gas Sales, Revenues and Margin </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Therm Sales &#150; </I></B>Unitil&#146;s total therm sales of natural gas increased 9.5% in the three months ended March&nbsp;31, 2018 compared to
the same period in 2017, reflecting increases of 13.3% and 8.3% in sales to Residential and Commercial and Industrial (C&amp;I) customers, respectively. The increase in gas therm sales in the Company&#146;s service areas was driven by customer
growth and colder winter weather in the first quarter of 2018 compared to 2017. Based on weather data collected in the Company&#146;s natural gas service areas, there were 10% more HDD in the first quarter of 2018 compared to the same period in
2017. The Company estimates that weather-normalized gas therm sales, excluding decoupled sales, were up 3.6% in the first quarter of 2018 compared to the same period in 2017. As of March&nbsp;31, 2018, the number of total natural gas customers
served has increased by 1,478 in the last twelve months. As previously discussed, sales margin derived from decoupled unit sales (representing approximately 11% of total annual therm sales volume) is not sensitive to changes in gas therm sales.
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The following table details total firm therm sales for the three months ended March&nbsp;31, 2018 and 2017, by major customer class:
</FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="78%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" COLSPAN="16" NOWRAP STYLE="border-bottom:1px solid #000000"> <P STYLE="margin-top:0px;margin-bottom:1px"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Therm Sales (millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom">&nbsp;<FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="14" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months Ended March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>%&nbsp;Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Residential</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>23.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B></B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">21.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">13.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Commercial / Industrial</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>70.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B></B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">64.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>94.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B></B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">85.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">11 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Gas Operating Revenues and Sales Margin</I></B> &#150; The following table details total Gas Operating
Revenues and Sales Margin for the three months ended March&nbsp;31, 2018 and 2017: </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="77%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" COLSPAN="16" NOWRAP STYLE="border-bottom:1px solid #000000"> <P STYLE="margin-top:0px;margin-bottom:1px"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Gas Operating Revenues and Sales Margin (millions)</B></FONT></P></TD>

<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom">&nbsp;<FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="14" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months Ended March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>$&nbsp;Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>%&nbsp;Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Gas Operating Revenues:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Residential</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>35.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">31.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Commercial / Industrial</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>51.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">43.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">17.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Gas Operating Revenues</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>87.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">74.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">16.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cost of Gas Sales</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>47.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">36.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">28.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Gas Sales Margin</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>39.9</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">38.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company analyzes operating results using Gas Sales Margin, a <FONT STYLE="white-space:nowrap">non-GAAP</FONT>
measure. Gas Sales Margin is calculated as Total Gas Operating Revenues (See &#147;Utility Revenue Recognition&#148; in Note 1 to the accompanying Consolidated Financial Statements) less Cost of Gas Sales. The Company believes Gas Sales Margin is an
important measure to analyze profitability because the approved cost of sales are tracked and reconciled costs that are passed through directly to the customer, resulting in an equal and offsetting amount reflected in Total Gas Operating Revenue.
Sales margin can be reconciled to Operating Income, a GAAP measure, by including Operation and Maintenance, Depreciation and Amortization and Taxes Other Than Income Taxes for each segment in the analysis. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Natural gas sales margin was $39.9&nbsp;million in the three months ended March&nbsp;31, 2018, an increase of $1.9&nbsp;million compared to the same
period in 2017. Gas sales margin in the first quarter of 2018 was positively affected by colder weather and customer growth of $1.8&nbsp;million and higher natural gas distribution rates of $1.6&nbsp;million, partially offset by lower revenue of
$1.5&nbsp;million to account for the reduction in rates due to the lower corporate income tax rate of 21% under the TCJA. The reduction in revenues also reflects a lower provision for income taxes. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The increase in Total Gas Operating Revenues of $12.2&nbsp;million in the first quarter of 2018 reflects higher natural gas sales volumes and higher cost
of gas sales, which are tracked and reconciled costs that are passed through directly to customers, partially offset by lower revenue related to the TCJA, discussed above. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>Electric Sales, Revenues and Margin </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Kilowatt-hour Sales</I></B> &#150; In the first
quarter of 2018, Unitil&#146;s total electric kWh sales increased 5.8% compared to the first quarter of 2017. Sales to Residential and C&amp;I customers increased 7.0% and 4.9%, respectively, in the first quarter of 2018 compared to the same period
in 2017, reflecting the positive impact of colder weather, customer growth and higher usage by industrial customers for production purposes. As of March&nbsp;31, 2018, the number of total electric customers served has increased by 516 in the last
twelve months. As previously discussed, sales margins derived from decoupled unit sales (representing approximately 27% of total annual kWh sales volume) are not sensitive to changes in electric kWh sales. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">12 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The following table details total kWh sales for the three months ended March&nbsp;31, 2018 and 2017 by major
customer class: </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="76%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" COLSPAN="16" NOWRAP STYLE="border-bottom:1px solid #000000"> <P STYLE="margin-top:0px;margin-bottom:1px"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>kWh Sales (millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="14" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months Ended March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>%&nbsp;Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Residential</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>188.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B></B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">176.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Commercial / Industrial</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>247.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B></B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">236.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">11.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>436.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B></B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">412.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">23.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Electric Operating Revenues and Sales Margin</I></B> &#150; The following table details total Electric Operating
Revenues and Sales Margin for the three months ended March&nbsp;31, 2018 and 2017: </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="78%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" COLSPAN="16" NOWRAP STYLE="border-bottom:1px solid #000000"> <P STYLE="margin-top:0px;margin-bottom:1px"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Electric Operating Revenues and Sales Margin
(millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom">&nbsp;<FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="14" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months Ended March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>$&nbsp;Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>%&nbsp;Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Electric Operating Revenues:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Residential</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>33.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">28.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">17.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Commercial / Industrial</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>23.7</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Electric Operating Revenues</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>57.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">49.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">16.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Cost of Electric Sales</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>35.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">27.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">28.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Electric Sales Margin</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>22.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">22.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company analyzes operating results using Electric Sales Margin, a <FONT STYLE="white-space:nowrap">non-GAAP</FONT>
measure. Electric Sales Margin is calculated as Total Electric Operating Revenues (See &#147;Utility Revenue Recognition&#148; in Note 1 to the accompanying Consolidated Financial Statements) less Cost of Electric Sales. The Company believes
Electric Sales Margin is an important measure to analyze profitability because the approved cost of sales are tracked and reconciled costs that are passed through directly to the customer resulting in an equal and offsetting amount reflected in
Total Electric Operating Revenues. Sales margin can be reconciled to Operating Income, a GAAP measure, by including Operation and Maintenance, Depreciation and Amortization and Taxes Other Than Income Taxes for each segment in the analysis.
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Electric sales margin was $22.3&nbsp;million in the three months ended March&nbsp;31, 2018, an increase of $0.3&nbsp;million compared to the
same period in 2017. Electric sales margin in the first quarter of 2018 was positively affected by higher electric distribution rates of $0.9&nbsp;million as well as colder weather and customer growth of $0.2&nbsp;million, partially offset by lower
revenue of $0.8&nbsp;million to account for the reduction in rates due to the lower corporate income tax rate of 21% under the TCJA. The reduction in revenues also reflects a lower provision for income taxes. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The increase in Total Electric Operating Revenues of $8.0&nbsp;million in the first quarter of 2018 reflects higher electric sales volumes and higher
cost of electric sales, which are tracked and reconciled costs that are passed through directly to customers, partially offset by lower revenues related to the TCJA, discussed above. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">13 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Operating Revenue &#150; Other </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The following table details total Other Operating Revenue for the three months ended March&nbsp;31, 2018 and 2017: </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="79%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" COLSPAN="16" NOWRAP STYLE="border-bottom:1px solid #000000"> <P STYLE="margin-top:0px;margin-bottom:1px"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Other Operating Revenue (Millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom">&nbsp;<FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="14" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months Ended March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>$&nbsp;Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>%&nbsp;Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(0.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(23.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Other Operating Revenue</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(0.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(23.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Other Operating Revenue (See &#147;Other Operating Revenue &#150;
<FONT STYLE="white-space:nowrap">Non-regulated&#148;</FONT> in Note 1 to the accompanying Consolidated Financial Statements), which is comprised of revenues from the Company&#146;s <FONT STYLE="white-space:nowrap">non-regulated</FONT> energy
brokering business, Usource, decreased $0.4&nbsp;million, or 23.5% in the first quarter of 2018, compared to the first quarter of 2017, primarily as a result of the adoption of a new accounting standard. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In the first quarter of 2018, the Company adopted Accounting Standards Update (ASU) <FONT STYLE="white-space:nowrap">2014-09,</FONT> and its subsequent
clarifications and amendments outlined in ASU <FONT STYLE="white-space:nowrap">2015-14,</FONT> ASU <FONT STYLE="white-space:nowrap">2016-08,</FONT> ASU <FONT STYLE="white-space:nowrap">2016-10</FONT> and ASU
<FONT STYLE="white-space:nowrap">2017-13,</FONT> on a modified retrospective basis, which requires application to contracts with customers effective January&nbsp;1, 2018. ASU <FONT STYLE="white-space:nowrap">2014-09</FONT> requires that payments
made by Usource to third parties (&#147;Channel Partners&#148;) for revenue sharing agreements are recognized as a reduction from revenue, where those payments were previously recognized as an operating expense. Therefore, beginning with the three
months ended March&nbsp;31, 2018 and going forward, payments made by Usource to third parties for revenue sharing agreements are reported as &#147;Other&#148; in the &#147;Operating Revenues&#148; section of the Consolidated Statements of Earnings,
along with Usource&#146;s revenues. Prior to the adoption of ASU <FONT STYLE="white-space:nowrap">2014-09,</FONT> payments by Usource to Channel Partners for revenue sharing agreements are included as &#147;Operation and Maintenance&#148; in the
&#147;Operating Expenses&#148; section of the Consolidated Statements of Earnings. Those Channel Partner payments were $0.3&nbsp;million each of the first quarters of 2018 and 2017. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">If ASU <FONT STYLE="white-space:nowrap">2014-09</FONT> had been in effect for the three months ended March&nbsp;31, 2017, the result would have been corresponding reductions of $0.3&nbsp;million in both
&#147;Other&#148; in in the &#147;Operating Revenues&#148; section of the Consolidated Statements of Earnings and &#147;Operation and Maintenance&#148; in the &#147;Operating Expenses&#148; section of the Company&#146;s Consolidated Statements of
Earnings. Usource&#146;s revenues are primarily derived from fees and charges billed to suppliers as customers take delivery of energy from those suppliers under term contracts brokered by Usource. </FONT></P>
<P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Operating Expenses </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Cost of Gas
Sales</I></B> &#150; Cost of Gas Sales includes the cost of natural gas purchased and manufactured to supply the Company&#146;s total gas supply requirements and spending on energy efficiency programs. Cost of Gas Sales increased $10.3&nbsp;million,
or 28.0%, in the three months ended March&nbsp;31, 2018 compared to the same period in 2017. This increase reflects higher wholesale natural gas prices and higher sales of natural gas. The Company reconciles and recovers the approved Cost of Gas
Sales in its rates at cost on a pass-through basis and therefore changes in approved expenses do not affect earnings. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">14 </FONT></P>



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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Cost of Electric Sales</I></B> &#150; Cost of Electric Sales includes the cost of electric supply as
well as other energy supply related restructuring costs, including power supply buyout costs, and spending on energy efficiency programs. Cost of Electric Sales increased $7.7&nbsp;million, or 28.0%, in the three months ended March&nbsp;31, 2018
compared to the same period in 2017. This increase reflects higher wholesale electricity prices and higher sales of electricity. The Company reconciles and recovers the approved Cost of Electric Sales in its rates at cost on a pass-through basis and
therefore changes in approved expenses do not affect earnings. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Operation and Maintenance </I></B>&#150; O&amp;M expense includes
electric and gas utility operating costs, and the operating costs of the Company&#146;s other business activities. O&amp;M expenses increased $1.3&nbsp;million, or 8.1%, in the three months ended March&nbsp;31, 2018 compared to the same period in
2017. The change in O&amp;M expenses reflects an increase in compensation and benefit costs of $0.7&nbsp;million, bad debt expenses of $0.2&nbsp;million and utility operating costs of $0.4&nbsp;million.The higher utility operating costs reflect
increased system maintenance costs related to a higher level of storms and colder weather in the first quarter of 2018 compared to the prior year period, as well as higher bad debt expense related to increased sales. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Depreciation and Amortization &#150;</I></B> Depreciation and Amortization expense decreased $0.2&nbsp;million, or 1.6%, in the three months ended
March&nbsp;31, 2018 compared to the same period in 2017, reflecting lower amortization of deferred major storm costs, partially offset by higher utility plant in service and amortization of information system and software costs. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Taxes Other Than Income Taxes &#150;</I></B> Taxes Other Than Income Taxes increased $0.3&nbsp;million, or 5.5%, in the three months ended
March&nbsp;31, 2018 compared to the same period in 2017, primarily reflecting higher local property taxes on higher levels of utility plant assets in service. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B><I>Other Expense, net &#150; </I></B>Other Expense, net in the three month period ended March&nbsp;31, 2018 increased $0.1&nbsp;million compared with the same period in 2017. In the first quarter of
2018, the Company adopted ASU <FONT STYLE="white-space:nowrap">No.&nbsp;2017-07,</FONT> &#147;Compensation &#150; Retirement Benefits (Topic 715)&#148; which amends the existing guidance relating to the presentation of net periodic pension cost and
net periodic other post-retirement benefit costs. On a retrospective basis, the amendment requires an employer to separate the service cost component from the other components of net benefit cost and provides explicit guidance on how to present the
service cost component and other components in the income statement. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accordingly, for all periods presented in the Consolidated Financial
Statements in this Form <FONT STYLE="white-space:nowrap">10-Q</FONT> for the quarter ended March&nbsp;31, 2018, the service cost component of the Company&#146;s net periodic benefit costs is reported in &#147;Operations and Maintenance&#148; in the
&#147;Operating Expenses&#148; section of the Consolidated Statements of Earnings while the other components of net periodic benefit costs are reported in the &#147;Other Expense (Income), net&#148; section of the Consolidated Statements of
Earnings. Prior to adoption, the Company reported all components of its net periodic benefit costs in &#147;Operations and Maintenance&#148; in the &#147;Operating Expenses&#148; section of the Consolidated Statements of Earnings. There are
$1.5&nbsp;million and $1.6&nbsp;million of <FONT STYLE="white-space:nowrap">non-service</FONT> cost net periodic benefit costs reported in &#147;Other Expense (Income), net&#148; for the three months ended March&nbsp;31, 2018 and March&nbsp;31,
2017, respectively. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Income Taxes</I></B> &#150; Federal and State Income Taxes decreased by $2.9&nbsp;million for the three months
ended March&nbsp;31, 2018 compared to the same period in 2017, reflecting $2.3&nbsp;million from a lower tax rate on higher <FONT STYLE="white-space:nowrap">pre-tax</FONT> earnings in Q1 2018 and the current tax benefit of $0.6&nbsp;million on
book/tax items not previously included in customers&#146; utility rates. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Interest Expense, net </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest expense is presented in the financial statements net of interest income. Interest expense is mainly comprised of interest on long-term debt and
short-term borrowings. In addition, certain reconciling rate mechanisms used by the Company&#146;s distribution operating utilities give rise to regulatory assets and regulatory liabilities on which interest is accrued. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">15 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil&#146;s utility subsidiaries operate a number of reconciling rate mechanisms to recover specifically
identified costs on a pass-through basis. These reconciling rate mechanisms track costs and revenue on a monthly basis. In any given month, this monthly tracking and reconciling process will produce either an under-collected or an over-collected
balance of costs. In accordance with the distribution utilities&#146; rate tariffs, interest is accrued on these balances and will produce either interest income or interest expense. Consistent with regulatory precedent, interest income is recorded
on an under-collection of costs which creates a regulatory asset to be recovered in future periods when rates are reset. Interest expense is recorded on an over-collection of costs, which creates a regulatory liability to be refunded in future
periods when rates are reset. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="84%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:106pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Interest Expense, net (millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="10" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three&nbsp;Months&nbsp;Ended</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;
31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Interest Expense</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Long-term Debt</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>5.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Short-term Debt</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(0.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Regulatory Liabilities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(0.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Subtotal Interest Expense</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>6.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Interest (Income)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Regulatory Assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(0.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(0.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">AFUDC and Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(0.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(0.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Subtotal Interest (Income)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(0.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(0.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Interest Expense, net</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>6.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest Expense, net was essentially unchanged in the three months ended March&nbsp;31, 2018 compared to the same period
in 2017, reflecting higher interest on long-term debt offset by lower net interest expense on net regulatory assets/liabilities and lower levels of short-term debt. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>CAPITAL REQUIREMENTS </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Sources of Capital </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil requires capital to fund utility plant additions, working capital and other utility expenditures recovered in subsequent periods through regulated
rates. The capital necessary to meet these requirements is derived primarily from internally-generated funds, which consist of cash flows from operating activities. The Company initially supplements internally-generated funds through short-term bank
borrowings, as needed, under its unsecured revolving Credit Facility. Periodically, the Company replaces portions of its short-term debt with long-term financings more closely matched to the long-term nature of its utility assets. Additionally, from
time to time, the Company has accessed the public capital markets through public offerings of equity securities. The Company&#146;s utility operations are seasonal in nature and are therefore subject to seasonal fluctuations in cash flows. The
amount, type and timing of any future financing will vary from year to year based on capital needs and maturity or redemptions of securities. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company and its subsidiaries are individually and collectively members of the Unitil Cash Pool (the &#147;Cash Pool&#148;). The Cash Pool is the
financing vehicle for <FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap">day-to-day</FONT></FONT> cash borrowing and investing. The Cash Pool allows for an efficient exchange of cash among the Company and its
</FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">16 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">
subsidiaries. The interest rates charged to the subsidiaries for borrowing from the Cash Pool are based on actual interest costs from lenders under the Company&#146;s revolving Credit Facility.
At March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017, the Company and all of its subsidiaries were in compliance with the regulatory requirements to participate in the Cash Pool. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">On October&nbsp;4, 2013, the Company entered into an Amended and Restated Credit Agreement (as further amended, restated, amended and restated, modified
or supplemented from time to time, the &#147;Credit Facility&#148;). The Credit Facility terminates October&nbsp;4, 2020 and provides for a borrowing limit of $120&nbsp;million which includes a $25&nbsp;million sublimit for the issuance of standby
letters of credit. The Credit Facility provides Unitil with the ability to elect that borrowings under the Credit Facility bear interest under several options, including at a daily fluctuating rate of interest per annum equal to <FONT
STYLE="white-space:nowrap">one-month</FONT> London Interbank Offered Rate (LIBOR) plus 1.25%. Provided there is no event of default under the Credit Facility, the Company may on a <FONT STYLE="white-space:nowrap">one-time</FONT> basis request an
increase in the aggregate commitments under the Credit Facility by an aggregate additional amount of up to $30&nbsp;million. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company
utilizes the Credit Facility for cash management purposes related to its short-term operating activities. Total gross borrowings were $88.9&nbsp;million for the three months ended March&nbsp;31, 2018. Total gross repayments were $81.9&nbsp;million
for the three months ended March&nbsp;31, 2017. The following table details the borrowing limits, amounts outstanding and amounts available under the revolving Credit Facility as of March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31,
2017: </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="84%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="73%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="10" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Revolving Credit Facility ($ millions)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Limit</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>120.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">120.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">120.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Short-Term Borrowings Outstanding</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>45.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">76.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">38.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Letters of Credit Outstanding</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Available</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>74.7</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">42.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">81.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Credit Facility contains customary terms and conditions for credit facilities of this type, including affirmative and
negative covenants. There are restrictions on, among other things, Unitil Corporation&#146;s and its subsidiaries&#146; ability to permit liens or incur indebtedness, and restrictions on Unitil&#146;s ability to merge or consolidate with another
entity or change its line of business. The affirmative and negative covenants under the Credit Facility shall apply until the Credit Facility terminates and all amounts borrowed under the Credit Facility are paid in full (or with respect to letters
of credit, they are cash collateralized). The only financial covenant in the Credit Facility provides that Funded Debt to Capitalization (as each term is defined in the Credit Facility) cannot exceed 65%, tested on a quarterly basis. At
March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017, the Company was in compliance with the covenants contained in the Credit Facility in effect on that date. (See also &#147;Credit Arrangements&#148; in Note 4.) </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">On November&nbsp;1, 2017, Northern Utilities issued $20&nbsp;million of Notes due 2027 at 3.52% and $30&nbsp;million of Notes due 2047 at 4.32%.
Fitchburg issued $10&nbsp;million of Notes due 2027 at 3.52% and $15&nbsp;million of Notes due 2047 at 4.32%. Granite State issued $15&nbsp;million of Notes due 2027 at 3.72%. Northern Utilities, Fitchburg and Granite State used the net proceeds
from these offerings to refinance higher cost long-term debt that matured in 2017, to repay short-term debt and for general corporate purposes. Approximately $0.7&nbsp;million of costs associated with these issuances have been netted against
Long-Term Debt for presentation purposes on the Consolidated Balance Sheets. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">17 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In April 2014, Unitil Service Corp. entered into a financing arrangement, structured as a capital lease
obligation, for various information systems and technology equipment. Final funding under this capital lease occurred on October&nbsp;30, 2015, resulting in total funding of $13.4&nbsp;million. The capital lease matures on September&nbsp;30, 2020.
As of March&nbsp;31, 2018, there are $2.7&nbsp;million of current and $4.4&nbsp;million of noncurrent obligations under this capital lease on the Company&#146;s Consolidated Balance Sheets. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Unitil Corporation and its utility subsidiaries, Fitchburg, Unitil Energy, Northern Utilities, and Granite State are currently rated &#147;BBB+&#148; by Standard&nbsp;&amp; Poor&#146;s Ratings Services.
Unitil Corporation and Granite State are currently rated &#147;Baa2&#148;, and Fitchburg, Unitil Energy and Northern Utilities are currently rated &#147;Baa1&#148; by Moody&#146;s Investors Services. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The continued availability of various methods of financing, as well as the choice of a specific form of security for such financing, will depend on many
factors, including, but not limited to: security market conditions; general economic climate; regulatory approvals; the ability to meet covenant issuance restrictions; the level of earnings, cash flows and financial position; and the competitive
pricing offered by financing sources. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company provides limited guarantees on certain energy and natural gas storage management contracts
entered into by the distribution utilities. The Company&#146;s policy is to limit the duration of these guarantees. As of March&nbsp;31, 2018, there were approximately $17.9&nbsp;million of guarantees outstanding and the longest term guarantee
extends through August 2018. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Northern Utilities enters into asset management agreements under which Northern Utilities releases certain
natural gas pipeline and storage assets, resells the natural gas storage inventory to an asset manager and subsequently repurchases the inventory over the course of the natural gas heating season at the same price at which it sold the natural gas
inventory to the asset manager. There was $1.0&nbsp;million, $3.8&nbsp;million and $8.5&nbsp;million of natural gas storage inventory at March&nbsp;31, 2018,&nbsp;March 31, 2017 and December&nbsp;31, 2017, respectively, related to these asset
management agreements. The amount of natural gas inventory released in March 2018 and payable in April 2018 is $1.0&nbsp;million and is recorded in Accounts Payable at March&nbsp;31, 2018. The amount of natural gas inventory released in March 2017
and payable in April 2017 was $2.0&nbsp;million and was recorded in Accounts Payable at March&nbsp;31, 2017. The amount of natural gas inventory released in December 2017 and payable in January 2018 was $3.1&nbsp;million and was recorded in Accounts
Payable at December&nbsp;31, 2017. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company also guarantees the payment of principal, interest and other amounts payable on the notes
issued by Granite State. As of March&nbsp;31, 2018, the principal amount outstanding for the 7.15% Granite State notes was $3.3&nbsp;million. </FONT></P>
<P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><FONT STYLE="white-space:nowrap">Off-Balance</FONT> Sheet Arrangements </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The Company and its subsidiaries do not currently use, and are not dependent on the use of, <FONT STYLE="white-space:nowrap">off-balance</FONT> sheet financing arrangements such as securitization of
receivables or obtaining access to assets or cash through special purpose entities or variable interest entities. Unitil Corporation&#146;s subsidiaries conduct a portion of their operations in leased facilities and also lease some of their
vehicles, machinery and office equipment under both capital and operating lease arrangements. Additionally, as of March&nbsp;31, 2018, there were approximately $17.9&nbsp;million of guarantees on certain energy and natural gas storage management
contracts entered into by the distribution utilities outstanding and the longest term guarantee extends through August 2018. See Note 4 (Debt and Financing Arrangements) to the accompanying Consolidated Financial Statements. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">18 </FONT></P>



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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CRITICAL ACCOUNTING POLICIES </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The preparation of the Company&#146;s financial statements in conformity with generally accepted accounting principles in the United States of America requires the Company to make estimates and
assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. In
making those estimates and assumptions, the Company is sometimes required to make difficult, subjective and/or complex judgments about the impact of matters that are inherently uncertain and for which different estimates that could reasonably have
been used could have resulted in material differences in its financial statements. If actual results were to differ significantly from those estimates, assumptions and judgment, the financial position of the Company could be materially affected and
the results of operations of the Company could be materially different than reported. For a complete discussion of the Company&#146;s significant accounting policies, refer to Note 1 to the Consolidated Financial Statements in this quarterly report
on Form <FONT STYLE="white-space:nowrap">10-Q</FONT> and Note 1 to the Consolidated Financial Statements in the Company&#146;s Annual Report on Form <FONT STYLE="white-space:nowrap">10-K,</FONT> as filed with the Securities and Exchange Commission
on February&nbsp;1, 2018. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>LABOR RELATIONS </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">As of March&nbsp;31, 2018, the Company and its subsidiaries had 514 employees. The Company considers its relationship with employees to be good and has not experienced any major labor disruptions.
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">As of March&nbsp;31, 2018, a total of 167 employees of certain of the Company&#146;s subsidiaries were represented by labor unions. The
following table details by subsidiary the employees covered by a collective bargaining agreement (CBA) as of March&nbsp;31, 2018: </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="75%"></TD>
<TD VALIGN="bottom" WIDTH="8%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="8%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Employees&nbsp;Covered</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>CBA&nbsp;Expiration</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Fitchburg</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">48</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">05/31/2019</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Northern Utilities NH Division</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">36</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">06/05/2020</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Northern Utilities ME Division</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">36</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">03/31/2021</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Granite State</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">03/31/2021</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil Energy</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">38</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">05/31/2018</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil Service</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">05/31/2018</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The CBAs provide discrete salary adjustments, established work practices and uniform benefit packages. The Company
expects to negotiate new agreements prior to their expiration dates. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>INTEREST RATE RISK </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">As discussed above, Unitil meets its external financing needs by issuing short-term and long-term debt. The majority of debt outstanding represents
long-term notes bearing fixed rates of interest. Changes in market interest rates do not affect interest expense resulting from these outstanding long-term debt securities. However, the Company periodically repays its short-term debt borrowings
through the issuance of new long-term debt securities. Changes in market interest </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">19 </FONT></P>



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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">
rates may affect the interest rate and corresponding interest expense on any new issuances of long-term debt securities. In addition, short-term debt borrowings bear a variable rate of interest.
As a result, changes in short-term interest rates will increase or decrease interest expense in future periods. For example, if the average amount of short-term debt outstanding was $25&nbsp;million for the period of one year, a change in interest
rates of 1% would result in a change in annual interest expense of approximately $250,000. The average interest rates on the Company&#146;s short-term borrowings and intercompany money pool transactions for the three months ended March&nbsp;31, 2018
and March&nbsp;31, 2017 were 2.9% and 2.1%, respectively. The average interest rate on the Company&#146;s short-term borrowings for the twelve months ended December&nbsp;31, 2017 was 2.4%. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>COMMODITY PRICE RISK </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Although Unitil&#146;s three distribution utilities are subject to
commodity price risk as part of their traditional operations, the current regulatory framework within which these companies operate allows for full collection of electric power and natural gas supply costs in rates on a pass-through basis.
Consequently, there is limited commodity price risk after consideration of the related rate-making. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>REGULATORY MATTERS </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Please refer to Note 6 to the unaudited Consolidated Financial Statements in Part I, Item 1 of this report for a discussion of Regulatory Matters.
</B></FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>ENVIRONMENTAL MATTERS </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Please refer to Note 7 to the unaudited Consolidated Financial Statements in Part I, Item 1 of this report for a discussion of Environmental Matters.
</B></FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">20 </FONT></P>



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<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="9%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Item&nbsp;1.</I></B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Financial Statements </I></B></FONT></TD></TR></TABLE> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx544531_1"></A>UNITIL CORPORATION AND SUBSIDIARY COMPANIES </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CONSOLIDATED STATEMENTS OF EARNINGS </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><I>(Millions, except per share data) </I></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">(UNAUDITED) </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="88%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three&nbsp;Months&nbsp;Ended</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;
31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Operating Revenues</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Gas</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>87.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">74.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Electric</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>57.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">49.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Operating Revenues</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>145.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">126.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Operating Expenses</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cost of Gas Sales</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>47.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">36.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cost of Electric Sales</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>35.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">27.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Operation and Maintenance</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>17.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">16.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Depreciation and Amortization</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>12.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Taxes Other than Income Taxes</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>5.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Operating Expenses</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>117.7</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">98.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Operating Income</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>28.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">27.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest Expense, net</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>6.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other Expense (Income), net</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.7</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Income Before Income Taxes</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>20.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income Taxes</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>4.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Net Income</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>15.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net Income Per Common Share (Basic and Diluted)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.06</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.88</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Weighted Average Common Shares Outstanding &#150; (Basic and Diluted)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>14.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Dividends Declared Per Share of Common Stock</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.365</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.360</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:24px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>(The accompanying notes are an integral part of these consolidated unaudited financial statements.)
</I></FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">21 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx544531_2"></A>UNITIL CORPORATION AND SUBSIDIARY COMPANIES</B><B><I> </I></B><B>
</B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CONSOLIDATED BALANCE SHEETS </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><I>(Millions) </I></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">(UNAUDITED) </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="76%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>ASSETS:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Current Assets:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash and Cash Equivalents</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>9.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accounts Receivable, net</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>74.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">57.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">67.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accrued Revenue</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>45.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">41.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">53.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Exchange Gas Receivable</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Gas Inventory</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Materials and Supplies</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>7.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Prepayments and Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>7.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Current Assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>144.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">126.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">151.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Utility Plant:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Gas</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>706.7</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">642.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">699.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Electric</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>478.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">440.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">476.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Common</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>69.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">35.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">67.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Construction Work in Progress</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>32.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">68.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">35.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Utility Plant</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1,286.7</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,187.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,279.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Less: Accumulated Depreciation</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>314.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">296.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">307.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net Utility Plant</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>972.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">890.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">971.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Other Noncurrent Assets:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Regulatory Assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>111.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">103.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">109.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other Assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>16.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">13.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Other Noncurrent Assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>127.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">117.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">119.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>TOTAL ASSETS</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1,244.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,134.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,241.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>(The
accompanying notes are an integral part of these consolidated unaudited financial statements.) </I></FONT></P>

 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">22 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>


 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>UNITIL CORPORATION AND SUBSIDIARY COMPANIES </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CONSOLIDATED BALANCE SHEETS (Cont.) </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><I>(Millions, except number of shares) </I></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">(UNAUDITED) </FONT></P>
<p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="76%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>



<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>LIABILITIES AND CAPITALIZATION:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Current Liabilities:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accounts Payable</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>30.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">28.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">41.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Short-Term Debt</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>45.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">76.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">38.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Long-Term Debt, Current Portion</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>29.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">30.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">29.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Regulatory Liabilities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>10.9</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Energy Supply Obligations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>7.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Environmental Obligations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Capital Lease Obligations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>3.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest Payable</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>6.9</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other Current Liabilities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>11.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">11.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Current Liabilities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>146.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">177.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">151.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Noncurrent Liabilities:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Retirement Benefit Obligations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>151.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">151.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">150.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Deferred Income Taxes, net</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>87.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">106.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">82.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cost of Removal Obligations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>86.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">79.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">84.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Regulatory Liabilities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>49.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">48.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Capital Lease Obligations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>4.9</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Environmental Obligations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other Noncurrent Liabilities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>5.7</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Noncurrent Liabilities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>386.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">352.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">377.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Capitalization:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Long-Term Debt, Less Current Portion</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>363.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">303.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">376.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Stockholders&#146; Equity:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Common Equity (Authorized: 25,000,000 and Outstanding:14,860,123, 14,107,741 and 14,815,585 Shares)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>277.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">242.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">275.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Retained Earnings</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>71.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">59.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">60.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Common Stock Equity</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>348.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">301.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">336.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Preferred Stock</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Stockholders&#146; Equity</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>348.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">301.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">336.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Capitalization</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>711.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">605.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">713.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Commitments and Contingencies (Notes 6 &amp; 7)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>TOTAL LIABILITIES AND CAPITALIZATION</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1,244.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,134.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,241.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:24px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>(The accompanying notes are an integral part of these consolidated unaudited financial statements.)
</I></FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">23 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx544531_3"></A>UNITIL CORPORATION AND SUBSIDIARY COMPANIES </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CONSOLIDATED STATEMENTS OF CASH FLOWS </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><I>(Millions) </I></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">(UNAUDITED) </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="88%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three&nbsp;Months&nbsp;Ended</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;
31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Operating Activities:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net Income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>15.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Adjustments to Reconcile Net Income to Cash</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Provided by Operating Activities:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Depreciation and Amortization</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>12.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Deferred Tax Provision</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>4.7</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Changes in Working Capital Items:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accounts Receivable</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(7.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(4.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accrued Revenue</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>8.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Exchange Gas Receivable</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>5.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Regulatory Liabilities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.7</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accounts Payable</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(11.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(4.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other Changes in Working Capital Items</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>3.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Deferred Regulatory and Other Charges</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(7.9</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(7.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other, net</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>3.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:7.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash Provided by Operating Activities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>28.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">37.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Investing Activities:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Property, Plant and Equipment Additions</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(10.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(17.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:7.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash (Used in) Investing Activities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(10.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(17.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Financing Activities:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Proceeds from (Repayment of) Short-Term Debt, net</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>7.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(5.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Repayment of Long-Term Debt</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(13.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(0.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Decrease in Capital Lease Obligations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(0.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(0.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net Decrease in Exchange Gas Financing</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(5.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(5.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Dividends Paid</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(5.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(5.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Proceeds from Issuance of Common Stock</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:7.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash (Used in) Financing Activities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(17.7</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(17.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net Increase in Cash and Cash Equivalents</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash and Cash Equivalents at Beginning of Period</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>8.9</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash and Cash Equivalents at End of Period</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>9.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Supplemental Cash Flow Information:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest Paid</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>3.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income Taxes Paid</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Payments on Capital Leases</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="white-space:nowrap">Non-cash</FONT> Investing Activity:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:9.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Capital Expenditures Included in Accounts Payable</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>(The accompanying notes are an integral part of these consolidated unaudited financial statements.)
</I></FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">24 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx544531_4"></A>UNITIL CORPORATION AND SUBSIDIARY COMPANIES </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CONSOLIDATED STATEMENTS OF CHANGES IN COMMON STOCK EQUITY </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><I>(Millions, except number of shares) </I></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">(UNAUDITED) </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="80%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Common</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Equity</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Retained<BR>Earnings</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Balance at January&nbsp;1, 2018</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">275.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">60.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>336.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net Income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>15.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Dividends on Common Shares</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(5.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(5.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Stock Compensation Plans</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Issuance of 7,812 Common Shares</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Balance at March&nbsp;31, 2018</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>277.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>71.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>348.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Balance at January&nbsp;1, 2017</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">240.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">52.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>292.9</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net Income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>12.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Dividends on Common Shares</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(5.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(5.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Stock Compensation Plans</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Issuance of 7,581 Common Shares</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Balance at March&nbsp;31, 2017</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>242.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>59.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>301.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>(The accompanying notes are an integral part of these consolidated unaudited financial statements.)
</I></FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">25 </FONT></P>



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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx544531_5"></A>UNITIL CORPORATION AND SUBSIDIARY COMPANIES </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NOTES TO CONSOLIDATED FINANCIAL STATEMENTS </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2">(UNAUDITED) </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NOTE 1 &#150; SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Nature of Operations</B> &#150; Unitil Corporation (Unitil or the Company) is a public utility holding company. Unitil and its subsidiaries are subject
to regulation as a holding company system by the Federal Energy Regulatory Commission (FERC) under the Energy Policy Act of 2005. The following companies are wholly-owned subsidiaries of Unitil: Unitil Energy Systems, Inc. (Unitil Energy), Fitchburg
Gas and Electric Light Company (Fitchburg), Northern Utilities, Inc. (Northern Utilities), Granite State Gas Transmission, Inc. (Granite State), Unitil Power Corp. (Unitil Power), Unitil Realty Corp. (Unitil Realty), Unitil Service Corp. (Unitil
Service) and its <FONT STYLE="white-space:nowrap">non-regulated</FONT> business unit Unitil Resources, Inc. (Unitil Resources). Usource Inc. and Usource L.L.C. are subsidiaries of Unitil Resources. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company&#146;s earnings are seasonal and are typically higher in the first and fourth quarters when customers use natural gas for heating purposes.
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil&#146;s principal business is the local distribution of electricity in the southeastern seacoast and state capital regions of New
Hampshire and the greater Fitchburg area of north central Massachusetts, and the local distribution of natural gas in southeastern New Hampshire, portions of southern and central Maine and in the greater Fitchburg area of north central
Massachusetts. Unitil has three distribution utility subsidiaries, Unitil Energy, which operates in New Hampshire, Fitchburg, which operates in Massachusetts and Northern Utilities, which operates in New Hampshire and Maine (collectively referred to
as the distribution utilities). </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Granite State is a natural gas transportation pipeline, operating 86 miles of underground gas transmission
pipeline primarily located in Maine and New Hampshire. Granite State provides Northern Utilities with interconnection to three major natural gas pipelines and access to domestic natural gas supplies in the south and Canadian natural gas supplies in
the north. Granite State derives its revenues principally from the transportation services provided to Northern Utilities and, to a lesser extent, third-party marketers. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">A fifth utility subsidiary, Unitil Power, formerly functioned as the full requirements wholesale power supply provider for Unitil Energy. In connection with the implementation of electric industry
restructuring in New Hampshire, Unitil Power ceased being the wholesale supplier of Unitil Energy on May&nbsp;1, 2003 and divested of its long-term power supply contracts through the sale of the entitlements to the electricity associated with
various electric power supply contracts it had acquired to serve Unitil Energy&#146;s customers. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil also has three other wholly-owned
subsidiaries: Unitil Service; Unitil Realty; and Unitil Resources. Unitil Service provides, at cost, a variety of administrative and professional services, including regulatory, financial, accounting, human resources, engineering, operations,
technology, energy management and management services on a centralized basis to its affiliated Unitil companies. Unitil Realty owns and manages the Company&#146;s corporate office in Hampton, New Hampshire and leases this facility to Unitil Service
under a long-term lease arrangement. Unitil Resources is the Company&#146;s wholly-owned <FONT STYLE="white-space:nowrap">non-regulated</FONT> subsidiary. Usource, Inc. and Usource L.L.C. (collectively, Usource) are wholly-owned subsidiaries of
Unitil Resources. Usource provides brokering and advisory services to large commercial and industrial customers in the northeastern United States. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">26 </FONT></P>



<p Style='page-break-before:always'>
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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Basis of Presentation &#150;</B> The accompanying unaudited consolidated financial statements of Unitil
have been prepared in accordance with the instructions to Form <FONT STYLE="white-space:nowrap">10-Q</FONT> and include all of the information and footnotes required by generally accepted accounting principles. In the opinion of management, all
adjustments considered necessary for a fair presentation have been included. The results of operations for the three months ended March&nbsp;31, 2018 are not necessarily indicative of results to be expected for the year ending December&nbsp;31,
2018. For further information, please refer to Note 1 of Part II to the Consolidated Financial Statements &#150; &#147;Summary of Significant Accounting Policies&#148; of the Company&#146;s Form <FONT STYLE="white-space:nowrap">10-K</FONT> for the
year ended December&nbsp;31, 2017, as filed with the Securities and Exchange Commission (SEC) on February&nbsp;1, 2018, for a description of the Company&#146;s Basis of Presentation. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>Utility Revenue Recognition &#150;</B> Gas Operating Revenues and Electric Operating Revenues consist of billed and unbilled revenue and revenue from rate adjustment mechanisms. Billed and unbilled
revenue includes delivery revenue and pass-through revenue, recognized according to tariffs approved by federal and state regulatory commissions which determine the amount of revenue the Company will record for these items. Revenue from rate
adjustment mechanisms is accrued revenue, recognized in connection with rate adjustment mechanisms, and authorized by regulators for recognition in the current period for future cash recoveries from, or credits to, customers. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Billed and unbilled revenue is recorded when service is rendered or energy is delivered to customers. However, the determination of energy sales to
individual customers is based on the reading of their meters, which occurs on a systematic basis throughout the month. At the end of each calendar month, amounts of energy delivered to customers since the date of the last meter reading are estimated
and the corresponding unbilled revenues are calculated. These unbilled revenues are calculated each month based on estimated customer usage by class and applicable customer rates and are then reversed in the following month when billed to customers.
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In the first quarter of 2018, the Company adopted Accounting Standards Update (ASU) <FONT STYLE="white-space:nowrap">2014-09,</FONT> and its
subsequent clarifications and amendments outlined in ASU <FONT STYLE="white-space:nowrap">2015-14,</FONT> ASU <FONT STYLE="white-space:nowrap">2016-08,</FONT> ASU <FONT STYLE="white-space:nowrap">2016-10</FONT> and ASU
<FONT STYLE="white-space:nowrap">2017-13,</FONT> on a modified retrospective basis, which requires application to contracts with customers effective January&nbsp;1, 2018, with the cumulative impact on contracts not yet completed as of
December&nbsp;31, 2017 recognized as an adjustment to the opening balance of Retained Earnings on the Company&#146;s Consolidated Balance Sheets. There was no cumulative effect of adoption to be recognized as an adjustment to the opening balance of
Retained Earnings on the Company&#146;s Consolidated Balance Sheets. The adoption of this guidance did not have a material impact on the Consolidated Financial Statements as of the adoption date or for the three months ended March&nbsp;31, 2018. A
majority of the Company&#146;s revenue from contracts with customers continues to be recognized on a monthly basis based on applicable tariffs and customer monthly consumption. Such revenue is recognized using the invoice practical expedient which
allows an entity to recognize revenue in the amount that directly corresponds to the value transferred to the customer. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">As discussed below,
the Company plans to disclose billed and unbilled revenue separately from rate adjustment mechanism revenue in the Notes to the Consolidated Financial Statements for periods in 2018 going forward, and will also provide this disclosure for prior
periods for informational purposes. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company&#146;s billed and unbilled revenue meets the definition of &#147;revenues from contracts with
customers&#148; as defined in ASU <FONT STYLE="white-space:nowrap">2014-09.</FONT> Revenue recognized in connection with rate adjustment mechanisms is consistent with the definition of alternative revenue programs in Accounting Standards
Codification (ASC) <FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap">980-605-25-3,</FONT></FONT></FONT> as the Company has the ability to adjust rates in the future as a result of past activities or
completed events. ASU <FONT STYLE="white-space:nowrap">2014-09</FONT> requires the Company to disclose separately the amount of revenues from contracts with customers and alternative revenue program revenues. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">27 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In the following tables, revenue is classified by the types of goods/services rendered and market/customer
type. The lower revenues reported in the first quarter of 2018 to account for the reduction in the corporate income tax rate under the Tax Cuts and Jobs Act of 2017 (TCJA) are shown separately in the table below for informational purposes.
</FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="78%"></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="10" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three&nbsp;Months&nbsp;Ended&nbsp;March&nbsp;31,&nbsp;2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:171pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Gas and Electric Operating Revenues ($ millions):</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Gas</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Electric</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Billed and Unbilled Revenue:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Residential</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">35.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">34.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">70.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">C&amp;I</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">50.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">24.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">74.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Revenue Reductions &#150; TCJA</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(0.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(2.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:7.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Billed and Unbilled Revenue</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">91.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">61.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">153.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Rate Adjustment Mechanism Revenue</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(4.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(4.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(8.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Gas and Electric Operating Revenues</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>87.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>57.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>144.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="12"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="10" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three&nbsp;Months&nbsp;Ended&nbsp;March&nbsp;31,&nbsp;2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:171pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Gas and Electric Operating Revenues ($ millions):</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Gas</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Electric</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Billed and Unbilled Revenue:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Residential</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">30.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">27.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">58.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">C&amp;I</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">42.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">19.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">61.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:7.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Billed and Unbilled Revenue</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">78.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">49.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">127.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Rate Adjustment Mechanism Revenue</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(4.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(3.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Gas and Electric Operating Revenues</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>74.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>49.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>124.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Fitchburg is subject to revenue decoupling. Revenue decoupling is the term given to the elimination of the dependency of
a utility&#146;s distribution revenue on the volume of electricity or natural gas sales. The difference between distribution revenue amounts billed to customers and the targeted revenue decoupling amounts is recorded as an increase or a decrease in
Accrued Revenue, which forms the basis for resetting rates for future cash recoveries from, or credits to, customers. These revenue decoupling targets may be adjusted as a result of rate cases that the Company files with the MDPU. The Company
estimates that revenue decoupling applies to approximately 27% and 11% of Unitil&#146;s total annual electric and natural gas sales volumes, respectively. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>Other Operating Revenue &#150; <FONT STYLE="white-space:nowrap">Non-regulated</FONT> &#150; </B>Usource, Unitil&#146;s <FONT STYLE="white-space:nowrap">non-regulated</FONT> subsidiary, conducts its
business activities as a broker of competitive energy services. Usource does not take title to the electric and gas commodities which are the subject of the brokerage contracts. The Company records energy brokering revenues based upon the amount of
electricity and gas delivered to customers through the end of the accounting period. Usource partners with certain entities to facilitate these brokerage services and pays these entities a fee under revenue sharing agreements. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">28 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">As discussed above, the Company adopted ASU <FONT STYLE="white-space:nowrap">2014-09</FONT> in the first
quarter of 2018. There was no cumulative effect of adoption to be recognized as an adjustment to the opening balance of Retained Earnings on the Company&#146;s Consolidated Balance Sheets. ASU <FONT STYLE="white-space:nowrap">2014-09</FONT> requires
that payments made by Usource to third parties (&#147;Channel Partners&#148;) for revenue sharing agreements are recognized net, as a reduction from revenue, where those payments were previously recognized gross as an operating expense. Therefore,
beginning with the three months ended March&nbsp;31, 2018 and going forward, payments made by Usource to Channel Partners for revenue sharing agreements are reported as &#147;Other&#148; in the &#147;Operating Revenues&#148; section of the
Consolidated Statements of Earnings, along with Usource&#146;s revenues. Prior to the adoption of ASU <FONT STYLE="white-space:nowrap">2014-09,</FONT> payments by Usource to third parties for revenue sharing agreements are included as
&#147;Operation and Maintenance&#148; in the &#147;Operating Expenses&#148; section of the Consolidated Statements of Earnings. Those Channel Partner payments were $0.3&nbsp;million each of the first quarters of 2018 and 2017. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">If ASU <FONT STYLE="white-space:nowrap">2014-09</FONT> had been adopted retroactively for the three months ended March&nbsp;31, 2017, the result would
have been corresponding reductions of $0.3&nbsp;million in both &#147;Other&#148; in in the &#147;Operating Revenues&#148; section of the Consolidated Statements of Earnings and &#147;Operation and Maintenance&#148; in the &#147;Operating
Expenses&#148; section of the Company&#146;s Consolidated Statements of Earnings as shown in the tables below. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="72%"></TD>
<TD VALIGN="bottom" WIDTH="11%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="11%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three&nbsp;Months&nbsp;Ended&nbsp;March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>As Reported</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" NOWRAP ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>If ASU <FONT STYLE="white-space:nowrap">2014-09</FONT><BR>Had Been in</B></FONT><br><FONT
STYLE="font-family:Times New Roman" SIZE="1"><B>Effect</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:134pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Other Operating Revenues ($ millions):</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Usource Contract Revenue</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Less: Revenue Sharing Payments</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Other Operating Revenues</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="8"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three&nbsp;Months&nbsp;Ended&nbsp;March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>As Reported</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>If ASU <FONT STYLE="white-space:nowrap">2014-09</FONT><BR>Had Been in</B></FONT><br><FONT
STYLE="font-family:Times New Roman" SIZE="1"><B>Effect</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:169pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Operation and Maintenance Expense ($ millions):</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Operation and Maintenance Expense</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>17.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Retirement Benefit Costs &#150; </B>The Company sponsors the Unitil Corporation Retirement Plan (Pension Plan), the
Unitil Employee Health and Welfare Benefits Plan (PBOP Plan) and the Unitil Corporation Supplemental Executive Retirement Plan (SERP).The net periodic benefit costs associated with these benefit plans consist of service cost and other components
(See Note 9 to the Consolidated Financial Statements). In the first quarter of 2018, the Company adopted ASU <FONT STYLE="white-space:nowrap">No.&nbsp;2017-07,</FONT> &#147;Compensation &#150; Retirement Benefits (Topic 715) which amends the
existing guidance relating to the presentation of net periodic pension cost and net periodic other post-retirement benefit costs. On a retrospective basis, the amendment requires an employer to separate the service cost component from the other
components of net benefit cost and provides explicit guidance on how to present the service cost component and other components in the income statement. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">29 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accordingly, for all periods presented in the Consolidated Financial Statements in this Form <FONT
STYLE="white-space:nowrap">10-Q</FONT> for the quarter ended March&nbsp;31, 2018, the service cost component of the Company&#146;s net periodic benefit costs is reported in &#147;Operations and Maintenance&#148; in the &#147;Operating Expenses&#148;
section of the Consolidated Statements of Earnings while the other components of net periodic benefit costs are reported in the &#147;Other Expense (Income), net&#148; section of the Consolidated Statements of Earnings. Prior to adoption, the
Company reported all components of its net periodic benefit costs in &#147;Operations and Maintenance&#148; in the &#147;Operating Expenses&#148; section of the Consolidated Statements of Earnings. The change in presentation for the quarter ended
March&nbsp;31, 2018 resulted in a reduction of &#147;Operations and Maintenance&#148; and an increase in &#147;Other Expense (Income), net&#148; on the Consolidated Statements of Earnings for the prior period. There are $1.5&nbsp;million and
$1.6&nbsp;million of <FONT STYLE="white-space:nowrap">non-service</FONT> cost net periodic benefit costs reported in &#147;Other Expense (Income), net for the three months ended March&nbsp;31, 2018 and March&nbsp;31, 2017, respectively, net of
amounts deferred as regulatory assets for future recovery. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Income Taxes &#150;</B> The Company is subject to Federal and State income
taxes as well as various other business taxes. This process involves estimating the Company&#146;s current tax liabilities as well as assessing temporary and permanent differences resulting from the timing of the deductions of expenses and
recognition of taxable income for tax and book accounting purposes. These temporary differences result in deferred tax assets and liabilities, which are included in the Company&#146;s Consolidated Balance Sheets. The Company accounts for income tax
assets, liabilities and expenses in accordance with the FASB Codification guidance on Income Taxes. The Company classifies penalty and interest expense related to income tax liabilities as income tax expense and interest expense, respectively, in
the Consolidated Statements of Earnings. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Provisions for income taxes are calculated in each of the jurisdictions in which the Company
operates for each period for which a statement of earnings is presented. The Company accounts for income taxes in accordance with the FASB Codification guidance on Income Taxes, which requires an asset and liability approach for the financial
accounting and reporting of income taxes. Significant judgments and estimates are required in determining the current and deferred tax assets and liabilities. The Company&#146;s current and deferred tax assets and liabilities reflect its best
assessment of estimated future taxes to be paid. In accordance with the FASB Codification, the Company periodically assesses the realization of its deferred tax assets and liabilities and adjusts the income tax provision, the current tax liability
and deferred taxes in the period in which the facts and circumstances which gave rise to the revision become known. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Cash and Cash
Equivalents &#150; </B>Cash and Cash Equivalents includes all cash and cash equivalents to which the Company has legal title. Cash equivalents include short-term investments with original maturities of three months or less and interest bearing
deposits. The Company&#146;s cash and cash equivalents are held at financial institutions and at times may exceed federally insured limits. The Company has not experienced any losses in such accounts. Under the Independent System Operator&#151;New
England <FONT STYLE="white-space:nowrap">(ISO-NE)</FONT> Financial Assurance Policy (Policy), Unitil&#146;s subsidiaries Unitil Energy, Fitchburg and Unitil Power are required to provide assurance of their ability to satisfy their obligations to <FONT
STYLE="white-space:nowrap">ISO-NE.</FONT> Under this Policy, Unitil&#146;s subsidiaries provide cash deposits covering approximately <FONT STYLE="white-space:nowrap">2-1/2</FONT> months of outstanding obligations, less credit amounts that are based
on the Company&#146;s credit rating. As of March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017, the Unitil subsidiaries had deposited $3.3&nbsp;million, $2.6&nbsp;million and $2.9&nbsp;million, respectively to satisfy their <FONT
STYLE="white-space:nowrap">ISO-NE</FONT> obligations. In addition, Northern Utilities has cash margin deposits to satisfy requirements for its natural gas hedging program. There were no cash margin deposits at Northern Utilities as of March&nbsp;31,
2018, March&nbsp;31, 2017 and December&nbsp;31, 2017. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">30 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Allowance for Doubtful Accounts &#150;</B> The Company recognizes a provision for doubtful accounts each
month based upon the Company&#146;s experience in collecting electric and gas utility service accounts receivable in prior years. At the end of each month, an analysis of the delinquent receivables is performed which takes into account an assumption
about the cash recovery of delinquent receivables. The analysis also calculates the amount of <FONT STYLE="white-space:nowrap">written-off</FONT> receivables that are recoverable through regulatory rate reconciling mechanisms. The Company&#146;s
distribution utilities are authorized by regulators to recover the costs of their energy commodity portion of bad debts through rate mechanisms. Also, the electric and gas divisions of Fitchburg are authorized to recover through rates past due
amounts associated with hardship accounts that are protected from <FONT STYLE="white-space:nowrap">shut-off.</FONT> Evaluating the adequacy of the Allowance for Doubtful Accounts requires judgment about the assumptions used in the analysis. It has
been the Company&#146;s experience that the assumptions it has used in evaluating the adequacy of the Allowance for Doubtful Accounts have proven to be reasonably accurate. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The Allowance for Doubtful Accounts as of March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017, which are included in Accounts Receivable, net on the accompanying unaudited consolidated
balance sheets, was as follows: </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="82%"></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:38pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>($ millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="10" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Allowance for Doubtful Accounts</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B></B>&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Accrued Revenue</B> &#150; Accrued Revenue includes the current portion of Regulatory Assets and unbilled revenues.
The following table shows the components of Accrued Revenue as of March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="82%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:100pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Accrued Revenue ($ millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Regulatory Assets &#150; Current</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>34.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">32.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">39.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unbilled Revenues</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>10.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">13.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Accrued Revenue</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>45.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">41.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">53.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Exchange Gas Receivable</B><I> </I>&#150; Northern Utilities and Fitchburg have gas exchange and storage agreements
whereby natural gas purchases during the months of April through October are delivered to a third party. The third party delivers natural gas back to the Company during the months of November through March. The exchange and storage gas volumes are
recorded at weighted average cost. The following table shows the components of Exchange Gas Receivable as of March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017. </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TR>
<TD WIDTH="81%"></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:127pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Exchange Gas Receivable ($ millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Northern Utilities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Fitchburg</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Exchange Gas Receivable</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">31 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Gas Inventory</B> &#150; The Company uses the weighted average cost methodology to value natural gas
inventory. The following table shows the components of Gas Inventory as of March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="80%"></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:89pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Gas Inventory ($ millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Natural Gas</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Propane</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Liquefied Natural Gas&nbsp;&amp; Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Gas Inventory</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Utility Plant &#150; </B>The cost of additions to Utility Plant and the cost of renewals and betterments are
capitalized. Cost consists of labor, materials, services and certain indirect construction costs, including an allowance for funds used during construction (AFUDC). The costs of current repairs and minor replacements are charged to appropriate
operating expense accounts. The original cost of utility plant retired or otherwise disposed of is charged to the accumulated provision for depreciation. The Company includes in its mass asset depreciation rates, which are periodically reviewed as
part of its ratemaking proceedings, cost of removal amounts to provide for future negative salvage value. At March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017, the Company estimates that the cost of removal amounts, which are
recorded on the Consolidated Balance Sheets in Cost of Removal Obligations are $86.6&nbsp;million, $79.7&nbsp;million, and $84.3&nbsp;million, respectively. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>Regulatory Accounting &#150;</B> The Company&#146;s principal business is the distribution of electricity and natural gas by the three distribution utilities: Unitil Energy, Fitchburg and Northern
Utilities. Unitil Energy and Fitchburg are subject to regulation by the FERC. Fitchburg is also regulated by the Massachusetts Department of Public Utilities (MDPU), Unitil Energy is regulated by the New Hampshire Public Utilities Commission (NHPUC)
and Northern Utilities is regulated by the Maine Public Utilities Commission (MPUC) and NHPUC. Granite State, the Company&#146;s natural gas transmission pipeline, is regulated by the FERC. Accordingly, the Company uses the Regulated Operations
guidance as set forth in the FASB Codification. The Company has recorded Regulatory Assets and Regulatory Liabilities which will be recovered from customers, or applied for customer benefit, in accordance with rate provisions approved by the
applicable public utility regulatory commission. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:181pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Regulatory Assets consist of the following ($ millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Retirement Benefits</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>85.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">75.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">84.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Energy Supply&nbsp;&amp; Other Rate Adjustment Mechanisms</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>31.9</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">27.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">36.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Deferred Storm Charges</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>8.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Environmental</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>9.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income Taxes</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>6.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>5.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Regulatory Assets</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>145.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">135.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">149.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Less: Current Portion of Regulatory Assets</FONT><FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP
STYLE="vertical-align:baseline; position:relative; bottom:.8ex">(1)</SUP></FONT><FONT STYLE="font-family:Times New Roman" SIZE="2"></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>34.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">32.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">39.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Regulatory Assets &#150; noncurrent</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>111.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">103.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">109.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP STYLE="vertical-align:baseline; position:relative; bottom:.8ex">(1)</SUP></FONT></B></FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP STYLE="vertical-align:baseline; position:relative; bottom:.8ex"></SUP></FONT></B>Reflects
amounts included in Accrued Revenue, discussed above, on the Company&#146;s Consolidated Balance Sheets. </FONT></P></TD></TR></TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">32 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>


<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="80%"></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:194pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Regulatory Liabilities consist of the following ($ millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Rate Adjustment Mechanisms</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>10.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Gas Pipeline Refund (Note 6)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income Taxes (Note 8)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>49.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">48.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Regulatory Liabilities</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>60.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">13.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">58.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Less: Current Portion of Regulatory Liabilities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>10.9</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Regulatory Liabilities &#150; noncurrent</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>49.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">48.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Generally, the Company receives a return on investment on its regulated assets for which a cash outflow has been made.
Included in Regulatory Assets as of March&nbsp;31, 2018 are $0.5&nbsp;million of deferred storm charges to be recovered over the year and $6.5&nbsp;million of environmental costs, rate case costs and other expenditures to be recovered over varying
periods in the next seven years. Regulators have authorized recovery of these expenditures, but without a return. Regulatory commissions can reach different conclusions about the recovery of costs, which can have a material impact on the
Company&#146;s Consolidated Financial Statements. The Company believes it is probable that its regulated distribution and transmission utilities will recover their investments in long-lived assets, including regulatory assets. If the Company, or a
portion of its assets or operations, were to cease meeting the criteria for application of these accounting rules, accounting standards for businesses in general would become applicable and immediate recognition of any previously deferred costs, or
a portion of deferred costs, would be required in the year in which the criteria are no longer met, if such deferred costs were not recoverable in the portion of the business that continues to meet the criteria for application of the FASB
Codification topic on Regulated Operations. If unable to continue to apply the FASB Codification provisions for Regulated Operations, the Company would be required to apply the provisions for the Discontinuation of Rate-Regulated Accounting included
in the FASB Codification. In the Company&#146;s opinion, its regulated operations will be subject to the FASB Codification provisions for Regulated Operations for the foreseeable future. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>Derivatives &#150;</B> The Company&#146;s regulated energy subsidiaries enter into energy supply contracts to serve their electric and gas customers. The Company follows a procedure for determining
whether each contract qualifies as a derivative instrument under the guidance provided by the FASB Codification on Derivatives and Hedging. For each contract, the Company reviews and documents the key terms of the contract. Based on those terms and
any additional relevant components of the contract, the Company determines and documents whether the contract qualifies as a derivative instrument as defined in the FASB Codification. The Company has determined that none of its energy supply
contracts, other than the regulatory approved hedging program, described below, qualifies as a derivative instrument under the guidance set forth in the FASB Codification. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The Company has managed a regulatory approved hedging program for Northern Utilities, which is designed to fix or cap a portion of its gas supply costs for the coming years of service through the purchase
of European call option contracts. Any gains or losses resulting from these option contracts are passed through to customers directly through Northern Utilities&#146; Cost of Gas Adjustment Clause. The fair value of these derivatives is determined
using Level&nbsp;2 inputs (valuations based on quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly), specifically based on the NYMEX closing prices for outstanding contracts
as of the balance sheet date. As a result of the ratemaking process, the Company records gains and losses resulting from the change in fair value of the derivatives as regulatory liabilities or assets, then reclassifies these gains or losses into
Cost of Gas Sales when the gains and losses are passed through to customers through the Cost of Gas Adjustment Clause. Currently, there are no active transactions and the Company has proposed to regulators to discontinue the program. This matter
remains pending. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">33 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">As of March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017 the Company had zero,
1.2&nbsp;billion and 0.6&nbsp;billion cubic feet (BCF), respectively, outstanding in natural gas futures and options contracts under its hedging program. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">As of March&nbsp;31, 2018 and March&nbsp;31, 2017 and December&nbsp;31, 2017, the Company&#146;s derivatives that are not designated as hedging instruments under FASB ASC
<FONT STYLE="white-space:nowrap">815-20</FONT> have a fair value of $0, $0.3&nbsp;million and less than $0.1&nbsp;million, respectively. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Investments in Marketable Securities</B> &#150; The Company has a trust through which it invests in a variety of equity and fixed income mutual funds.
These funds are intended to satisfy obligations under the Company&#146;s Supplemental Executive Retirement Plan (&#147;SERP&#148;) (See further discussion of the SERP in Note 9. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">At March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017, the fair value of the Company&#146;s investments in these trading securities, which are recorded on the Consolidated Balance Sheets
in Other Assets, were $5.1&nbsp;million, $3.3 and $3.6&nbsp;million, respectively, as shown in the table below. These investments are valued based on quoted prices from active markets and are categorized in Level&nbsp;1 as they are actively traded
and no valuation adjustments have been applied. Changes in the fair value of these investments are recorded in Other Expense, net. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="82%"></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:162pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Fair Value of Marketable Securities ($ millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Equity Funds</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.9</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Fixed Income Funds</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash and Equivalents</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Marketable Securities</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>5.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Energy Supply Obligations &#150; </B>The following discussion and table summarize the nature and amounts of the items
recorded as Energy Supply Obligations (current portion) and Other Noncurrent Liabilities (noncurrent portion) on the Company&#146;s Consolidated Balance Sheets. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="80%"></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:132pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Energy Supply Obligations ($ millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Current:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Exchange Gas Obligation</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Renewable Energy Portfolio Standards</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>7.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Power Supply Contract Divestitures</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Energy Supply Obligations &#150; Current</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>7.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Long-Term:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Power Supply Contract Divestitures</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Energy Supply Obligations</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>8.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">34 </FONT></P>



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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Exchange Gas Obligation &#150; As discussed above, Northern Utilities enters into gas exchange agreements
under which Northern Utilities releases certain natural gas pipeline and storage assets, resells the natural gas storage inventory to an asset manager and subsequently repurchases the inventory over the course of the natural gas heating season at
the same price at which it sold the natural gas inventory to the asset manager. The gas inventory related to these agreements is recorded in Exchange Gas Receivable on the Company&#146;s Consolidated Balance Sheets while the corresponding
obligations are recorded in Energy Supply Obligations. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Renewable Energy Portfolio Standards &#150; Renewable Energy Portfolio Standards (RPS)
require retail electricity suppliers, including public utilities, to demonstrate that required percentages of their sales are met with power generated from certain types of resources or technologies. Compliance is demonstrated by purchasing and
retiring Renewable Energy Certificates (REC) generated by facilities approved by the state as qualifying for REC treatment. Unitil Energy and Fitchburg purchase RECs in compliance with RPS legislation in New Hampshire and Massachusetts for supply
provided to default service customers. RPS compliance costs are a supply cost that is recovered in customer default service rates. Unitil Energy and Fitchburg collect RPS compliance costs from customers throughout the year and demonstrate compliance
for each calendar year on the following July 1. Due to timing differences between collection of revenue from customers and payment of REC costs to suppliers, Unitil Energy and Fitchburg typically maintain accrued revenue for RPS compliance which is
recorded in Accrued Revenue with a corresponding liability in Energy Supply Obligations on the Company&#146;s Consolidated Balance Sheets. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Fitchburg has entered into long-term renewable contracts for electric energy and/or renewable energy credits pursuant to Massachusetts legislation,
specifically, the Act Relative to Green Communities of 2008 and the Act Relative to Competitively Priced Electricity (2012)&nbsp;in the Commonwealth, and the MDPU&#146;s regulations implementing the legislation. The generating facilities associated
with three of these contracts have been constructed and are operating. A recent round of long-term renewable energy procurements was conducted during 2016 and several contracts were finalized and submitted to MDPU for approval in 2017. These
approvals remain pending. Additional procurements are expected in compliance with the Act to Promote Energy Diversity (2016). Fitchburg recovers the costs associated with long-term renewable contracts on a fully reconciling basis through a
MDPU-approved cost recovery mechanism. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Power Supply Contract Divestitures &#150; Unitil Energy&#146;s and Fitchburg&#146;s customers are
entitled to purchase their electric or natural gas supplies from third-party suppliers. In connection with the implementation of retail choice, Unitil Power, which formerly functioned as the wholesale power supply provider for Unitil Energy, and
Fitchburg divested their long-term power supply contracts through the sale of the entitlements to the electricity sold under those contracts. Unitil Energy and Fitchburg recover in their rates all the costs associated with the divestiture of their
power supply portfolios and have secured regulatory approval from the NHPUC and MDPU, respectively, for the recovery of power supply-related stranded costs. The obligations related to these divestitures are recorded in Energy Supply Obligations
(current portion) and Other Noncurrent Liabilities (noncurrent portion) on the Company&#146;s Consolidated Balance Sheets with corresponding regulatory assets recorded in Accrued Revenue (current portion) and Regulatory Assets (noncurrent portion).
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Recently Issued Pronouncements </B>&#150;<B> </B>In March 2017, the FASB issued ASU
<FONT STYLE="white-space:nowrap">No.&nbsp;2017-07,</FONT> &#147;Compensation &#150; Retirement Benefits (Topic 715) which amends the existing guidance relating to the presentation of net periodic pension cost and net periodic other post-retirement
benefit costs. On a retrospective basis, the amendment requires an employer to separate the service cost component from the other components of net benefit cost and provides explicit guidance on how to present the service cost component and other
components in the income statement. In addition, on a prospective basis, the ASU limits the component of net benefit cost eligible to be capitalized to service costs. The ASU became effective for the Company on January&nbsp;1, 2018. The change in
capitalization of retirement benefits did not have a material impact on the Company&#146;s Consolidated Financial Statements. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">35 </FONT></P>



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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In May 2014, the FASB issued ASU <FONT STYLE="white-space:nowrap">No.&nbsp;2014-09,</FONT> &#147;Revenue
from Contracts with Customers (Topic 606)&#148;, which amends existing revenue recognition guidance, effective January&nbsp;1, 2018. The objective of the new standard is to provide a single, comprehensive revenue recognition model for all contracts
with customers to improve comparability across entities, industries, jurisdictions, and capital markets and to provide more useful information to users of financial statements through improved and expanded disclosure requirements. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The majority of the Company&#146;s revenue, including energy provided to customers, is from tariff offerings that provide natural gas or electricity
without a defined contractual term. For such arrangements, the Company generally expects that the revenue from contracts with these customers will continue to be equivalent to the electricity or natural gas supplied and billed in that period
(including unbilled revenues) and the adoption of the new guidance will not result in a significant shift in the timing of revenue recognition for such sales. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The Company used the modified retrospective method when adopting the new standard on January&nbsp;1, 2018. The new guidance did not have a material impact to the Consolidated Financial Statements. (See
&#147;Utility Revenue Recognition&#148; and &#147;Other Operating Revenue &#150; <FONT STYLE="white-space:nowrap">Non-regulated&#148;</FONT> above.) </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">In February 2016, the FASB issued ASU <FONT STYLE="white-space:nowrap">2016-02,</FONT> Leases, Topic 842, which amends the existing guidance relating to the definition of a lease, recognition of lease
assets and lease liabilities on the balance sheet, and the disclosure of key information about leasing arrangements.&nbsp;In November 2017, the FASB tentatively decided to amend the new leasing guidance such that entities may elect not to restate
their comparative periods in the period of adoption. Under the new standard, all lessees must recognize an asset and liability on the balance sheet. Operating leases were previously not recognized on the balance sheet.&nbsp;The ASU will be effective
for the Company on January&nbsp;1, 2019, with early adoption permitted. The Company plans to adopt this guidance in the first quarter of 2019.&nbsp;The Company expects this ASU to increase lease assets and lease liabilities on the Consolidated
Balance Sheets and does not expect the guidance will have a material impact on the Consolidated Statements of Income, Statements of Cash Flows and lease disclosures. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">In January 2016, the FASB issued Accounting Standards Update (ASU) <FONT STYLE="white-space:nowrap">2016-01</FONT> which addresses certain aspects of recognition, measurement, presentation and disclosure
of financial instruments. A financial instrument is defined as cash, evidence of ownership interest in a company or other entity, or a contract that both: (i)&nbsp;imposes on one entity a contractual obligation either to deliver cash or another
financial instrument to a second entity or to exchange other financial instruments on potentially unfavorable terms with the second entity and (ii)&nbsp;conveys to that second entity a contractual right either to receive cash or another financial
instruments from the first entity or to exchange other financial instruments on potentially favorable terms with the first entity. The ASU became effective for the Company on January&nbsp;1, 2018 and it did not have a material impact on the
Company&#146;s Consolidated Financial Statements. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other than the pronouncements discussed above, there are no recently issued pronouncements
that the Company has not already adopted or that have a material impact on the Company. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Subsequent Events </B>&#150;<B></B> The Company
evaluates all events or transactions through the date of the related filing. During the period through the date of this filing, the Company did not have any material subsequent events that would result in adjustment to or disclosure in its
Consolidated Financial Statements. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">36 </FONT></P>



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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NOTE 2 &#150; DIVIDENDS DECLARED PER SHARE </B></FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="92%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="28%"></TD>
<TD VALIGN="bottom" WIDTH="18%"></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="18%"></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="18%"></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Declaration</B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000;width:39pt ; display:inline;" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Date</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Date</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Paid (Payable)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Shareholder&nbsp;of</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Record&nbsp;Date</B></FONT></TD>

<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Dividend</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Amount</B></FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-left:1.00em; text-indent:-1.00em" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">04/25/18</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">05/29/18</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">05/15/18</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">$0.365</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-left:1.00em; text-indent:-1.00em" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">01/30/18</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">02/28/18</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">02/14/18</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">$0.365</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-left:1.00em; text-indent:-1.00em" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">10/25/17</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">11/29/17</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">11/15/17</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">$0.360</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-left:1.00em; text-indent:-1.00em" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">07/26/17</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">08/29/17</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">08/15/17</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">$0.360</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-left:1.00em; text-indent:-1.00em" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">04/26/17</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">05/30/17</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">05/16/17</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">$0.360</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-left:1.00em; text-indent:-1.00em" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">01/25/17</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">02/28/17</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">02/14/17</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">$0.360</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NOTE 3 &#150; SEGMENT INFORMATION </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The following table provides significant segment financial data for the three months ended March&nbsp;31, 2018 and March&nbsp;31, 2017: </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="71%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom">&nbsp;<FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Gas</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Electric</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Non-</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Regulated</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Other</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:168pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months Ended March&nbsp;31, 2018 ($ millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Revenues:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Billed and Unbilled Revenue</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>91.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>61.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>153.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Rate Adjustment Mechanism Revenue</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(4.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(4.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(8.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other Operating Revenue &#150; <FONT STYLE="white-space:nowrap">Non-Regulated</FONT></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:2.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Operating Revenues</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>87.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>57.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>145.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Segment Profit (Loss)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>12.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>3.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(0.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>15.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Identifiable Segment Assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>712.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>481.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>7.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>42.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1,244.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Capital Expenditures</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>3.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>6.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>10.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:168pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months Ended March&nbsp;31, 2017 ($ millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Revenues</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">74.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">49.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">126.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Segment Profit</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Identifiable Segment Assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">641.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">442.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">42.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,134.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Capital Expenditures</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">17.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:124pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>As of December&nbsp;31, 2017 ($ millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Identifiable Segment Assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">714.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">476.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">44.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,241.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">37 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NOTE 4 &#150; DEBT AND FINANCING ARRANGEMENTS </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Details on long-term debt at March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017 are shown below: </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="79%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:38pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>($ millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Unitil Corporation:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.33% Senior Notes, Due May&nbsp;1, 2022</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>20.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.70% Senior Notes, Due August&nbsp;1, 2026</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>30.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">30.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">30.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Unitil Energy First Mortgage Bonds:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.24% Senior Secured Notes, Due March&nbsp;2, 2020</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>10.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.49% Senior Secured Notes, Due October&nbsp;14, 2024</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>7.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.96% Senior Secured Notes, Due September&nbsp;1, 2028</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>20.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.00% Senior Secured Notes, Due May&nbsp;1, 2031</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>15.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.32% Senior Secured Notes, Due September&nbsp;15, 2036</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>15.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.75% Senior Notes, Due November&nbsp;30, 2023</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>7.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.79% Senior Notes, Due October&nbsp;15, 2025</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>10.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.52% Senior Notes, Due November&nbsp;1, 2027</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>10.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.37% Senior Notes, Due January&nbsp;15, 2029</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>12.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.90% Senior Notes, Due December&nbsp;15, 2030</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>15.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.98% Senior Notes, Due June&nbsp;1, 2031</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>14.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.32% Senior Notes, Due November&nbsp;1, 2047</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>15.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northern Utilities:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.95% Senior Notes, Due December&nbsp;3, 2018</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>10.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.29% Senior Notes, Due March&nbsp;2, 2020</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>16.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">25.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">25.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.52% Senior Notes, Due November&nbsp;1, 2027</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>20.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.72% Senior Notes, Due December&nbsp;3, 2038</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>50.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">50.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">50.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.42% Senior Notes, Due October&nbsp;15, 2044</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>50.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">50.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">50.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.32% Senior Notes, Due November&nbsp;1, 2047</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>30.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">30.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Granite State:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.15% Senior Notes, Due December&nbsp;15, 2018</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>3.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.72% Senior Notes, Due November&nbsp;1, 2027</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>15.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Unitil Realty Corp.:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.00% Senior Secured Notes, Due Through August&nbsp;1, 2017</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Long-Term Debt</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>396.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">336.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">409.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Less: Unamortized Debt Issuance Costs</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>3.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Long-Term Debt, net of Unamortized Debt Issuance Costs</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>392.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">333.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">406.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Less: Current Portion</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>29.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">30.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">29.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total Long-term Debt, Less Current Portion</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>363.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">303.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">376.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">38 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fair Value of Long-Term Debt</B> &#150; Currently, the Company believes that there is no active market in
the Company&#146;s debt securities, which have all been sold through private placements. If there were an active market for the Company&#146;s debt securities, the fair value of the Company&#146;s long-term debt would be estimated based on the
quoted market prices for the same or similar issues, or on the current rates offered to the Company for debt of the same remaining maturities. The fair value of the Company&#146;s long-term debt is estimated using Level&nbsp;2 inputs (valuations
based on quoted prices available in active markets for similar assets or liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, inputs other than quoted prices that are directly observable, and inputs derived
principally from market data.) In estimating the fair value of the Company&#146;s long-term debt, the assumed market yield reflects the Moody&#146;s Baa Utility Bond Average Yield. Costs, including prepayment costs, associated with the early
settlement of long-term debt are not taken into consideration in determining fair value. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="79%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:38pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>($ millions)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Estimated Fair Value of Long-Term Debt</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>428.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">374.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">457.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Credit Arrangements </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">On October&nbsp;4, 2013, the Company entered into an Amended and Restated Credit Agreement (as further amended, restated, amended and restated, modified or supplemented from time to time, the &#147;Credit
Facility&#148;). The Credit Facility terminates October&nbsp;4, 2020 and provides for a borrowing limit of $120&nbsp;million which includes a $25&nbsp;million sublimit for the issuance of standby letters of credit. The Credit Facility provides
Unitil with the ability to elect that borrowings under the Credit Facility bear interest under several options, including at a daily fluctuating rate of interest per annum equal to <FONT STYLE="white-space:nowrap">one-month</FONT> London Interbank
Offered Rate (LIBOR) plus 1.25%. Provided there is no event of default under the Credit Facility, the Company may on a <FONT STYLE="white-space:nowrap">one-time</FONT> basis request an increase in the aggregate commitments under the Credit Facility
by an aggregate additional amount of up to $30&nbsp;million. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company utilizes the Credit Facility for cash management purposes related to
its short-term operating activities. Total gross borrowings were $88.9&nbsp;million for the three months ended March&nbsp;31, 2018. Total gross repayments were $81.9&nbsp;million for the three months ended March&nbsp;31, 2017. The following table
details the borrowing limits, amounts outstanding and amounts available under the revolving Credit Facility as of March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017: </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="79%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="10" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Revolving&nbsp;Credit&nbsp;Facility&nbsp;($&nbsp;millions)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Limit</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>120.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">120.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">120.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Short-Term Borrowings Outstanding</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>45.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">76.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">38.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Letters of Credit Outstanding</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Available</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>74.7</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">42.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">81.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">39 </FONT></P>



<p Style='page-break-before:always'>
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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Credit Facility contains customary terms and conditions for credit facilities of this type, including
affirmative and negative covenants. There are restrictions on, among other things, Unitil Corporation&#146;s and its subsidiaries&#146; ability to permit liens or incur indebtedness, and restrictions on Unitil&#146;s ability to merge or consolidate
with another entity or change its line of business. The affirmative and negative covenants under the Credit Facility shall apply until the Credit Facility terminates and all amounts borrowed under the Credit Facility are paid in full (or with
respect to letters of credit, they are cash collateralized). The only financial covenant in the Credit Facility provides that Funded Debt to Capitalization (as each term is defined in the Credit Facility) cannot exceed 65%, tested on a quarterly
basis. At March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017, the Company was in compliance with the covenants contained in the Credit Facility in effect on that date. (See also &#147;Credit Arrangements&#148; in Note 4.)
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The weighted average interest rates on all short-term borrowings and intercompany money pool transactions were 2.9% and 2.1% for the three
months ended March&nbsp;31, 2018 and March&nbsp;31, 2017, respectively. The weighted average interest rate on all short-term borrowings for the twelve months ended December&nbsp;31, 2017 was 2.4%. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">On November&nbsp;1, 2017, Northern Utilities issued $20&nbsp;million of Notes due 2027 at 3.52% and $30&nbsp;million of Notes due 2047 at 4.32%.
Fitchburg issued $10&nbsp;million of Notes due 2027 at 3.52% and $15&nbsp;million of Notes due 2047 at 4.32%. Granite State issued $15&nbsp;million of Notes due 2027 at 3.72%. Northern Utilities, Fitchburg and Granite State used the net proceeds
from these offerings to refinance higher cost long-term debt that matured in 2017, to repay short-term debt and for general corporate purposes. Approximately $0.7&nbsp;million of costs associated with these issuances have been netted against
Long-Term Debt for presentation purposes on the Consolidated Balance Sheets. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In April 2014, Unitil Service Corp. entered into a financing
arrangement, structured as a capital lease obligation, for various information systems and technology equipment. Final funding under this capital lease occurred on October&nbsp;30, 2015, resulting in total funding of $13.4&nbsp;million. The capital
lease matures on September&nbsp;30, 2020. As of March&nbsp;31, 2018, there are $2.7&nbsp;million of current and $4.4&nbsp;million of noncurrent obligations under this capital lease on the Company&#146;s Consolidated Balance Sheets. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil Corporation and its utility subsidiaries, Fitchburg, Unitil Energy, Northern Utilities, and Granite State are currently rated &#147;BBB+&#148; by
Standard&nbsp;&amp; Poor&#146;s Ratings Services. Unitil Corporation and Granite State are currently rated &#147;Baa2&#148;, and Fitchburg, Unitil Energy and Northern Utilities are currently rated &#147;Baa1&#148; by Moody&#146;s Investors Services.
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Northern Utilities enters into asset management agreements under which Northern Utilities releases certain natural gas pipeline and storage
assets, resells the natural gas storage inventory to an asset manager and subsequently repurchases the inventory over the course of the natural gas heating season at the same price at which it sold the natural gas inventory to the asset manager.
There was $1.0&nbsp;million, $3.8&nbsp;million and $8.5&nbsp;million of natural gas storage inventory at March&nbsp;31, 2018,&nbsp;March 31, 2017 and December&nbsp;31, 2017, respectively, related to these asset management agreements. The amount of
natural gas inventory released in March 2018 and payable in April 2018 is $1.0&nbsp;million and is recorded in Accounts Payable at March&nbsp;31, 2018. The amount of natural gas inventory released in March 2017 and payable in April 2017 was
$2.0&nbsp;million and was recorded in Accounts Payable at March&nbsp;31, 2017. The amount of natural gas inventory released in December 2017 and payable in January 2018 was $3.1&nbsp;million and was recorded in Accounts Payable at December&nbsp;31,
2017. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">40 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Guarantees </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The Company provides limited guarantees on certain energy and natural gas storage management contracts entered into by the distribution utilities. The Company&#146;s policy is to limit the duration of
these guarantees. As of March&nbsp;31, 2018, there were approximately $17.9&nbsp;million of guarantees outstanding and the longest term guarantee extends through August 2018. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The Company also guarantees the payment of principal, interest and other amounts payable on the notes issued by Granite State. As of March&nbsp;31, 2018, the principal amount outstanding for the 7.15%
Granite State notes was $3.3&nbsp;million. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NOTE 5 &#150; COMMON STOCK AND PREFERRED STOCK </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Common Stock </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company&#146;s common
stock trades on the New York Stock Exchange under the symbol, &#147;UTL.&#148; </FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company had 14,107,741, 14,815,585 and 14,860,123 shares of
common stock outstanding at March&nbsp;31, 2017, December&nbsp;31, 2017 and March&nbsp;31, 2018, respectively. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Unitil Corporation Common
Stock Offering</B> - On December&nbsp;14, 2017, the Company issued and sold 690,000 shares of its common stock at a price of $48.30 per share in a registered public offering (Offering). The Company&#146;s net increase to Common Equity and Cash
proceeds from the Offering was approximately $31.7&nbsp;million and was used to make equity capital contributions to the Company&#146;s regulated utility subsidiaries, repay short-term debt and for general corporate purposes. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Dividend Reinvestment and Stock Purchase Plan -</B> During the first quarter of 2018, the Company sold 7,812 shares of its common stock, at an average
price of $43.71 per share, in connection with its Dividend Reinvestment and Stock Purchase Plan (DRP) and its 401(k) plans resulting in net proceeds of approximately $341,500. The DRP provides participants in the plan a method for investing cash
dividends on the Company&#146;s common stock and cash payments in additional shares of the Company&#146;s common stock. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Stock Plan -</B>
The Company maintains the Unitil Corporation Second Amended and Restated 2003 Stock Plan (the Stock Plan). Participants in the Stock Plan are selected by the Compensation Committee of the Board of Directors to receive awards under the Stock Plan,
including awards of restricted shares (Restricted Shares), or of restricted stock units (Restricted Stock Units). The Compensation Committee has the authority to determine the sizes of awards; determine the terms and conditions of awards in a manner
consistent with the Stock Plan; construe and interpret the Stock Plan and any agreement or instrument entered into under the Stock Plan as they apply to participants; establish, amend, or waive rules and regulations for the Stock Plan&#146;s
administration as they apply to participants; and, subject to the provisions of the Stock Plan, amend the terms and conditions of any outstanding award to the extent such terms and conditions are within the discretion of the Compensation Committee
as provided for in the Stock Plan. On April&nbsp;19, 2012, the Company&#146;s shareholders approved an amendment to the Stock Plan to, among other things, increase the maximum number of shares of common stock available for awards to plan
participants. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The maximum number of shares available for awards to participants under the Stock Plan is 677,500. The maximum number of shares
that may be awarded in any one calendar year to any one participant is 20,000. In the event of any change in capitalization of the Company, the Compensation Committee is authorized to make an equitable adjustment to the number and kind </FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">of shares of common stock that may be delivered under the Stock Plan and, in addition, may authorize and make an equitable adjustment to the Stock
Plan&#146;s annual individual award limit. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">41 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><U>Restricted Shares </U></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Outstanding awards of Restricted Shares fully vest over a period of four years at a rate of 25% each year. During the vesting period, dividends on Restricted Shares underlying the award may be credited to
a participant&#146;s account. The Company may deduct or withhold, or require a participant to remit to the Company, an amount sufficient to satisfy any taxes required by federal, state, or local law or regulation to be withheld with respect to any
taxable event arising in connection with an Award. For purposes of compensation expense, Restricted Shares vest immediately upon a participant becoming eligible for retirement, as defined in the Stock Plan. Prior to the end of the vesting period,
the restricted shares are subject to forfeiture if the participant ceases to be employed by the Company other than due to the participant&#146;s death. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">On January&nbsp;29, 2018, 37,510 Restricted Shares were issued in conjunction with the Stock Plan with an aggregate market value at the date of issuance of approximately $1.6&nbsp;million. There were
90,882 and 94,880 <FONT STYLE="white-space:nowrap">non-vested</FONT> shares under the Stock Plan as of March&nbsp;31, 2018 and 2017, respectively. The weighted average grant date fair value of these shares was $41.93 and $39.55, respectively. The
compensation expense associated with the issuance of shares under the Stock Plan is being recognized over the vesting period and was $1.8&nbsp;million and $1.7&nbsp;million for the three months ended March&nbsp;31, 2018 and 2017, respectively. At
March&nbsp;31, 2018, there was approximately $1.3&nbsp;million of total unrecognized compensation cost under the Stock Plan which is expected to be recognized over approximately 2.8 years. During the three months ended March&nbsp;31, 2018 there were
784 shares of Restricted Shares forfeited. There were no cancellations under the Stock Plan during the three months ended March&nbsp;31, 2018. </FONT></P>
<P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><U>Restricted Stock Units </U></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Restricted Stock
Units earn dividend equivalents and will generally be settled by payment to each Director as soon as practicable following the Director&#146;s separation from service to the Company. The Restricted Stock Units will be paid such that the Director
will receive (i)&nbsp;70% of the shares of the Company&#146;s common stock underlying the restricted stock units and (ii)&nbsp;cash in an amount equal to the fair market value of 30% of the shares of the Company&#146;s common stock underlying the
Restricted Stock Units. The equity portion of Restricted Stock Units activity during the three months ended March&nbsp;31, 2018 in conjunction with the Stock Plan are presented in the following table: </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="81%"></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" COLSPAN="8" NOWRAP ALIGN="center" STYLE="border-bottom:1px solid #000000"> <P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Restricted Stock Units (Equity
Portion)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Units</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Weighted</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Average</B></FONT><br><FONT
STYLE="font-family:Times New Roman" SIZE="1"><B>Stock</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Price</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Restricted Stock Units as of December&nbsp;31, 2017</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">52,224</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">36.22</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Restricted Stock Units Granted</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Dividend Equivalents Earned</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">453</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">42.04</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Restricted Stock Units Settled</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Restricted Stock Units as of March&nbsp;31, 2018</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>52,677</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>36.27</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">There were 43,696 Restricted Stock Units outstanding as of March&nbsp;31, 2017 with a weighted average stock price of
$33.49. Included in Other Noncurrent Liabilities on the Company&#146;s Consolidated Balance Sheets as of March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017 is $1.0&nbsp;million, $0.8&nbsp;million and $1.0&nbsp;million, respectively,
representing the fair value of liabilities associated with the portion of fully vested RSUs that will be settled in cash. <B></B> </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">42 </FONT></P>



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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Preferred Stock </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">There was $0.2&nbsp;million, or 1,893 shares, of Unitil Energy&#146;s 6.00% Series Preferred Stock outstanding as of March&nbsp;31, 2018, March&nbsp;31, 2017 and December&nbsp;31, 2017. There were less
than $0.1&nbsp;million of total dividends declared on Preferred Stock in each of the three month periods ended March&nbsp;31, 2018 and March&nbsp;31, 2017, respectively. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>NOTE 6 &#150; REGULATORY MATTERS </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>UNITIL&#146;S REGULATORY MATTERS ARE DESCRIBED IN NOTE
8 TO THE FINANCIAL STATEMENTS IN ITEM 8 OF PART II OF UNITIL CORPORATION&#146;S FORM <FONT STYLE="white-space:nowrap">10-K</FONT> FOR DECEMBER&nbsp;31, 2017 AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY&nbsp;1, 2018.
</B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Tax Cuts and Jobs Act of 2017 </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">At the end of December 2017, the United States Congress voted and the President signed into law major federal tax law changes Tax Cuts and Jobs Act of 2017 (TCJA) effective for tax year 2018. Among other
things, the TCJA substantially reduces the corporate income tax rate to 21&nbsp;percent, effective January&nbsp;1, 2018. Each state public utility commission, with jurisdiction over the areas that are served by Unitil&#146;s electric and gas
subsidiary companies, has or is in the process of issuing procedural orders directing how the tax law changes are to be reflected in rates, including requiring that the companies provide certain filings and calculations. Unitil is fully complying
with these orders and will make any necessary changes to its rates as directed by the commissions. The FERC has opened a rulemaking proceeding on this matter (described below). The Company believes that the ultimate resolution of these matters will
not have a material impact on its financial position, operating results or cash flows. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In Maine, Northern Utilities&#146; Maine division has
recently completed a base rate case (described more fully below). The MPUC had issued a procedural order indicating that the tax law changes were to be reflected in its calculation of final rates for the Company, and the final order in that docket
incorporated the lower tax rates. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In New Hampshire, Northern Utilities&#146; New Hampshire division has a base rate case proceeding pending
(described below), and the NHPUC issued an order directing the Company to show how the tax changes can be effected within the schedule for the rate case. On April&nbsp;6, 2018, Northern Utilities filed a proposed comprehensive settlement agreement
among the Company, the Staff of the Public Utilities Commission and the Office of Consumer Advocate which includes the effect of the tax changes in the calculation of the agreed upon revenue requirement. With respect to Unitil Energy, the NHPUC
directed the Company to make a filing by April&nbsp;1, 2018, showing the effect of the tax law changes on rates. On March&nbsp;16, 2018, the Company filed for its annual step increase pursuant to the provisions of its last base rate case, and
included in that filing proposed adjustments to account for the tax changes. This proposal remains pending. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In Massachusetts, the Attorney
General filed a petition with the MDPU requesting that it open an investigation to require the flow-through of the tax law changes in rates for all utilities subject to the MDPU&#146;s jurisdiction. On February&nbsp;2, 2018 the MDPU issued an order
opening an investigation into the effect on rates of the decrease in the federal corporate income tax rate on the MDPU&#146;s regulated utilities. The MDPU consolidated the Attorney General&#146;s petition into its investigation. In its order, the
MDPU required each utility company subject to its jurisdiction to file, by May&nbsp;1, 2018, a proposal to address the effects of the TCJA and to reduce its rates through the establishment of a revised cost of service incorporating the lower federal
corporate income tax rate as of January&nbsp;1, 2018. Such proposals must address the adjustment of rates going forward </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">43 </FONT></P>



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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">
and also incorporate the timely refund of revenues associated with the lower tax expense on current income and excess accumulated deferred income taxes (ADIT). Fitchburg plans to submit filings
for both its gas and electric divisions with estimated revenue reductions of $0.8 million at each respective division. This matter remains pending. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">On March&nbsp;15, 2018, the FERC issued a Notice of Proposed Rulemaking (NOPR) that would allow it to determine which pipelines under the Natural Gas Act may be collecting unjust and unreasonable rates in
light of the corporate tax rate reduction and changes to the FERC&#146;s income tax allowance policies. The proposed rule, if adopted, would require an interstate pipeline to file a <FONT STYLE="white-space:nowrap">one-time</FONT> report on the
regulated rate effect of the new tax law and changes to the FERC&#146;s income tax allowance policies. In addition to filing the <FONT STYLE="white-space:nowrap">one-time</FONT> report, each pipeline would have four options: 1) make a limited rate
filing to reduce its rates by the percentage reduction in its cost of service shown in its report; 2) commit to file either a prepackaged uncontested rate settlement or a general rate case by December&nbsp;31, 2018; 3) file a statement explaining
why it believes its current rates are reasonable and no reduction is necessary; or 4) file the required report without taking any other action, at which point FERC would consider whether to initiate an investigation. Granite State is reviewing the
NOPR and will comply with all FERC requirements. Granite State believes that the ultimate resolution of these matters will not have a material impact on its financial position, operating results or cash flows. </FONT></P>
<P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Rate Case Activity </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Unitil Energy
&#150; Base Rates &#150;</B> On April&nbsp;20, 2017 the NHPUC issued its final order approving a settlement between Unitil Energy, NHPUC Staff and the Office of Consumer Advocate providing for a permanent increase of $4.1&nbsp;million in electric
base rates, and a three year rate plan with an additional rate step adjustment, effective May&nbsp;1, 2017, of $0.9&nbsp;million, followed by two rate step adjustments in May of 2018 and 2019 to recover the revenue requirements associated with
annual capital expenditures as defined under the rate plan. On March&nbsp;16, 2018, Unitil Energy filed its second step adjustment. The filing also incorporated the revenue requirement effect of the federal tax decrease pursuant to the TCJA, along
with the termination of the <FONT STYLE="white-space:nowrap">one-year</FONT> reconciliation adjustment which had recouped the difference between temporary rates and final rates. The net effect of the three adjustments results in a proposed revenue
decrease of $0.4&nbsp;million. The proposal remains pending. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg &#150; Base Rates &#150; Electric &#150;</B> On April&nbsp;29, 2016
the MDPU issued an order approving a $2.1&nbsp;million increase in Fitchburg&#146;s electric base revenue decoupling target, effective May&nbsp;1, 2016. As part of its order, the MDPU approved, with modifications, Fitchburg&#146;s request for an
annual capital cost recovery mechanism, which allows for increases to target revenues to recover the revenue requirement associated with capital additions as defined under the mechanism. In 2016, Fitchburg filed its first compliance report on
capital investments for calendar year 2015. The MDPU approved the recovery of approximately $0.5&nbsp;million, effective January&nbsp;1, 2017, subject to further investigation and reconciliation. On December&nbsp;18, 2017, the MDPU approved
Fitchburg&#146;s calendar year 2015 capital investments and associated revenue requirements for recovery. On June&nbsp;29, 2017, Fitchburg filed its compliance report on capital investments for calendar year 2016. On December&nbsp;20, 2017, the MDPU
approved the recovery of approximately $0.4&nbsp;million, effective January&nbsp;1, 2018, subject to further investigation and reconciliation. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg &#150; Base Rates &#150; Gas &#150;</B> On April&nbsp;29, 2016, the MDPU issued an order approving a $1.6&nbsp;million increase in
Fitchburg&#146;s gas base revenue decoupling target, effective May&nbsp;1, 2016. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg &#150; Gas Operations &#150;</B> On
October&nbsp;31, 2016, Fitchburg submitted its annual filing under its gas system enhancement program to recover the revenue requirements associated with its projected capital additions in 2017 as defined under the program. The filing sought
approval to collect an additional $0.9&nbsp;million of annual revenue requirements. On April&nbsp;28, 2017, the MDPU </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">44 </FONT></P>



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approved recovery of the projected 2017 revenue requirements, subject to reconciliation and a cap of 1.5% on the change in revenue requirement to be billed in any given year. The cap resulted in
approval of an additional $0.5&nbsp;million of annual revenue requirements to be billed effective May&nbsp;1, 2017 with the remaining $0.4&nbsp;million of annual revenue requirements deferred for billing in future periods. In its April&nbsp;28, 2017
annual reconciliation filing for 2016 revenue requirements, the Company requested that the MDPU waive the 1.5% revenue requirement cap. On October&nbsp;31, 2017, the MDPU approved a <FONT STYLE="white-space:nowrap">one-year</FONT> waiver of the cap
and allowed the Company to bill the total 2016 actual reconciliation balance. On October&nbsp;31, 2017, Fitchburg submitted its annual filing under the program to recover the revenue requirements associated with its projected capital additions in
2018. In this filing, the Company has requested to change the revenue requirements cap to 3%. This matter remains pending. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northern
Utilities &#150; Base Rates &#150; Maine &#150;</B> In May 2017, Northern Utilities filed a base rate case with the MPUC seeking to increase annual revenues by $6.0&nbsp;million. The requested increase was subsequently supplemented by an additional
$0.7&nbsp;million associated with the Company&#146;s Targeted Area <FONT STYLE="white-space:nowrap">Build-out</FONT> (TAB) Program (see below). In addition to the distribution base rate increase, Northern Utilities requested to extend its Targeted
Infrastructure Replacement Adjustment mechanism (TIRA) (see below). </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">On February&nbsp;28, 2018 the MPUC issued its Final Order (Order) in the
base rate case. The Order provides for a revenue increase of $2.1&nbsp;million offset by a revenue decrease of $2.2&nbsp;million to incorporate the effect of the lower federal income tax rate under the TCJA, resulting in an overall annual revenue
decrease of $0.1&nbsp;million. The MPUC approved a return on equity of 9.5&nbsp;percent and a capital structure reflecting 50&nbsp;percent equity and 50&nbsp;percent long-term debt. The Order also provides for a reduction in annual depreciation
expense reducing the Company&#146;s annual operating costs by approximately $0.5&nbsp;million. The Order addresses a number of other issues including a change to therm billing, increases in other delivery charges, and cost recovery under the
Company&#146;s TAB Program and TIRA mechanism. The new rates and other changes became effective as of March&nbsp;1, 2018. On March&nbsp;16, 2018, the Company filed a Motion for Clarification requesting the MPUC clarify its Order in light of what the
Company believes to be an inadvertent inconsistency with the Order regarding 2016 TIRA Eligible Facilities, rate base and related annual revenue adjustments. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>Northern Utilities &#150; Targeted Infrastructure Replacement Adjustment &#150; Maine &#150;</B> The settlement in Northern Utilities&#146; Maine division&#146;s 2013 rate case allowed the Company to
implement a TIRA rate mechanism to adjust base distribution rates annually to recover the revenue requirements associated with targeted investments in gas distribution system infrastructure replacement and upgrade projects, including the
Company&#146;s Cast Iron Replacement Program (CIRP). The TIRA had an initial term of four years and covered targeted capital expenditures in 2013 through 2016. In its Order in the current base rate case (see above), the MPUC approved an extension of
the Company&#146;s TIRA mechanism, with revision, for an additional eight-year period, which will allow for annual rate adjustments through the end of the CIRP program. On March&nbsp;30, 2018, the Company filed its request to increase its annual
base rates to recover the revenue requirements for 2017 Eligible Facilities. This matter remains pending. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northern Utilities &#150;
Targeted Area <FONT STYLE="white-space:nowrap">Build-out</FONT> Program &#150; Maine &#150;</B> In December 2015, the MPUC approved a TAB program and associated rate surcharge mechanism. This program is designed to allow the economic extension of
natural gas mains to new, targeted service areas in Maine. It allows customers in the targeted area the ability to pay a rate surcharge, instead of a large upfront payment or capital contribution to connect to the natural gas delivery system. The
initial pilot of the TAB program was approved for the City of Saco, and is being built out over a period of three years, with the potential to add 1,000 new customers and approximately $1&nbsp;million in annual distribution revenue in the Saco area.
A second TAB program was approved for the Town of </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">45 </FONT></P>



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Sanford, and has the potential to add 2,000 new customers and approximately $2&nbsp;million in annual distribution revenue in the Sanford area. In its base rate case Order (above), the MPUC
approved the inclusion of Saco TAB investments in rate base along with a cost recovery incentive mechanism for future TAB investments. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northern Utilities &#150; Base Rates &#150; New Hampshire &#150; </B>On June&nbsp;5, 2017, Northern Utilities filed for a base rate increase with the
NHPUC seeking to increase annual revenues by $4.7&nbsp;million. On June&nbsp;15, 2017, the NHPUC suspended the Company&#146;s proposed permanent rates tariffs while the filing is under regulatory review </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Northern Utilities reached a settlement agreement on temporary rates to produce an increase in annual revenues of approximately $1.6&nbsp;million,
effective with service rendered on and after August&nbsp;1, 2017, and until a final, <FONT STYLE="white-space:nowrap">non-appealable</FONT> order on permanent rates is issued. The settlement agreement was approved by the NHPUC on July&nbsp;31, 2017.
As of March&nbsp;31, 2018, Northern Utilities has deferred approximately $1.1&nbsp;million of costs associated with this base rate case. Once a final decision on permanent rates is issued, it will be reconciled back to the date that temporary rates
were implemented. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">On April&nbsp;6, 2018, Northern Utilities filed a proposed comprehensive settlement agreement among the Company, the NHPUC
Staff and the Office of the Consumer Advocate. The settling parties agreed to an annual revenue increase of $2.6&nbsp;million and an offsetting decrease of $1.7&nbsp;million to reflect the effect of the TCJA, for a net annual revenue increase of
$0.9&nbsp;million, effective May&nbsp;1, 2018. The parties also agreed to a step increase of $2.3&nbsp;million to recover post-test year capital investments, also effective May&nbsp;1, 2018. Under the agreement, the company may file for a second
step increase for effect May&nbsp;1, 2019 to recover eligible capital investments in 2018, up to a revenue requirement cap of $2.2&nbsp;million. If the company chooses the option to implement the second step increase, the next distribution base rate
case shall be based on an historic test year of no earlier than twelve months ending December&nbsp;31, 2020. A hearing before the NHPUC to consider the settlement agreement was held on April&nbsp;12, 2018. This matter remains pending. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northern Utilities &#150; Pipeline Refund &#150; </B>On February&nbsp;19, 2015, the FERC issued Opinion
<FONT STYLE="white-space:nowrap">No.&nbsp;524-A,</FONT> the final order in Portland Natural Gas Transmission&#146;s (PNGTS) Section&nbsp;4 rate case, requiring PNGTS to issue refunds to shippers. Northern Utilities received a pipeline refund of
$22.0&nbsp;million on April&nbsp;15, 2015. As a gas supply-related refund, the entire amount refunded will be credited to Northern Utilities&#146; customers and marketers over three years as directed by the NHPUC and MPUC. As of March&nbsp;31, 2018,
$21.4&nbsp;million has been refunded to Northern Utilities&#146; customers and marketers. The Company has recorded current Regulatory Liabilities related to these refunds of $0.6&nbsp;million on its Consolidated Balance Sheets as of March&nbsp;31,
2018. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Granite State &#150; Base Rates &#150; </B>Granite State has in place a FERC-approved second amended settlement agreement under
which it is permitted to file annually, each June, for a rate adjustment to recover the revenue requirements associated with specified capital investments in gas transmission projects up to a specific cap on expenditures. On June&nbsp;21, 2017
Granite State filed for an annual revenue increase under this provision of $0.2&nbsp;million, effective August&nbsp;1, 2017. The FERC issued an order approving the filing on July&nbsp;28, 2017. This is the last annual rate adjustment allowed under
the second amended settlement because Granite must file a general rate case pursuant to Section&nbsp;4 of the Natural Gas Act by April&nbsp;30, 2018 with rates effective no later than November&nbsp;1, 2018. </FONT></P>
<P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Other Matters </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NHPUC Energy
Efficiency Resource Standard Proceeding &#150; </B>In May 2015, the NHPUC opened a proceeding to establish an Energy Efficiency Resource Standard (&#147;EERS&#148;), an energy efficiency policy with specific targets or goals for energy savings that
New Hampshire electric and </FONT></P>
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gas utilities must meet. On April&nbsp;27, 2016, a comprehensive settlement agreement was filed by the parties, including Unitil Energy and Northern Utilities, which was approved by the NHPUC on
August&nbsp;2, 2016. The settlement provides for: extending the 2014-2016 Core program an additional year (through 2017); establishing an EERS; establishing a recovery mechanism to compensate the utilities for lost-revenue related to the EERS
programs; and approving the performance incentives and processes for stakeholder involvement, evaluation, measurement and verification, and oversight of the EERS programs. In accordance with the Settlement, on September&nbsp;1, 2017, the New
Hampshire electric and gas utilities jointly filed a Statewide Energy Efficiency Plan for the period 2018-2020. The Settlement and the Statewide Energy Efficiency Plan for the period 2018-2020 were approved on January&nbsp;2, 2018. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Unitil Energy &#150; Electric Grid Modernization &#150; </B>In July 2015, the NHPUC opened an investigation into Grid Modernization to address a
variety of issues related to Distribution System Planning, Customer Engagement with Distributed Energy Resources, and Utility Cost Recovery and Financial Incentives. The NHPUC engaged a consultant to direct a Working Group to investigate these
issues and to prepare a final report with recommendations for the Commission. The final report was filed on March&nbsp;20, 2017. This matter remains pending. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>Unitil Energy &#150; Net Metering &#150; </B>Pursuant to legislation that became effective in May 2016, the NHPUC opened a proceeding to consider alternatives to the net metering tariffs currently in
place. The NHPUC issued an Order on June&nbsp;23, 2017. The Order removes the cap on the total amount of generation capacity which may be owned or operated by customer-generators eligible for net metering. The order also adopts an alternative net
metering tariff for small customer-generators (those with renewable energy systems of 100 kW or less) which will remain in effect for a period of years while further data is collected and analyzed, <FONT STYLE="white-space:nowrap"><FONT
STYLE="white-space:nowrap">time-of-use</FONT></FONT> and other pilot programs are implemented, and a distributed energy resource valuation study is conducted. Systems that are installed or queued during this period will have their net metering rate
structure &#147;grandfathered&#148; until December&nbsp;31, 2040. The Company does not believe that this proceeding will have a material adverse impact on the Company&#146;s financial position, operating results or cash flows. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg &#150; Electric Operations &#150; </B>On November&nbsp;1, 2017, Fitchburg submitted its 2017 annual reconciliation of costs and revenues for
transition and transmission under its restructuring plan, including the reconciliation of costs and revenues for a number of other surcharges and cost factors, for review and approval by the MDPU. All of the rates were given final approval by the
MDPU on December&nbsp;28, 2017, effective January&nbsp;1, 2018. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg &#150; Service Quality &#150; </B>On March&nbsp;1, 2018,
Fitchburg submitted its 2017 Service Quality Reports for both its gas and electric divisions in accordance with new Service Quality Guidelines issued by the MDPU in December 2015. Fitchburg reported that it met or exceeded its benchmarks for service
quality performance in all metrics for both its gas and electric divisions. These filings are pending approval. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg &#150; Solar
Generation &#150; </B>On August&nbsp;19, 2016, Fitchburg filed a petition with the MDPU seeking approval to develop a 1.3 MW solar generation facility located on Company property in Fitchburg, Massachusetts, including a cost recovery mechanism to
share the costs and benefits of the project among all Fitchburg customers. On November&nbsp;9, 2016, the MDPU approved a Settlement Agreement supporting the proposal, which was reached among the Company, the Attorney General of Massachusetts, and
the <FONT STYLE="white-space:nowrap">Low-Income</FONT> Weatherization and Fuel Assistance Program Network. Construction of the solar generating facility was completed and the facility began generating power on November&nbsp;22, 2017. On
April&nbsp;2, 2018, Fitchburg submitted its first filing pursuant to its Solar Cost Adjustment tariff, by which the company recovers its annual revenue requirement related to its investment in the solar generation facility. The filing seeks a net
amount of approximately $300,000 for recovery effective June&nbsp;1, 2018. </FONT></P>
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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg &#150; Energy Diversity &#150; </B>Governor Baker signed into law H4568 &#147;An Act to Promote
Energy Diversity&#148; on August&nbsp;8, 2016. Among many sections in the bill, the primary provision adds new sections 83c and 83d to the 2008 Green Communities Act. Section&nbsp;83c requires every electric distribution company (EDC), including
Fitchburg, to jointly and competitively solicit proposals for at least 400 MW&#146;s of offshore wind energy generation by June&nbsp;30, 2017, as part of a total of 1,600 MW of offshore wind the EDCs are directed to procure by June&nbsp;30, 2027.
The procurement requirement is subject to a determination by the MDPU that the proposed long-term contracts are cost-effective. Section&nbsp;83d further requires the EDCs to jointly seek proposals for cost effective clean energy (hydro and other)
long-term contracts via one or more staggered solicitations, the first of which shall be issued not later than April&nbsp;1, 2017, for a total of 9,450,000 megawatt-hours by December&nbsp;31, 2022. Emergency regulations implementing these new
provisions, 220 C.M.R. &#167;&nbsp;23.00 et seq. and 220 C.M.R. &#167; 24.00 et seq. were adopted by the MDPU on December&nbsp;29, 2016, and adopted as final regulations on March&nbsp;8, 2017. The EDCs issued the RFP for Long-Term Contracts for
Clean Energy Projects, pursuant to Section&nbsp;83d on March&nbsp;31, 2017 and project proposals were received on July&nbsp;27, 2017. Final selection of projects concluded in the first quarter of 2018 and contract negotiation is underway. The EDCs
issued the RFP for Long-Term Contracts for Offshore Wind Energy Projects pursuant to Section&nbsp;83c on June&nbsp;29, 2017 and project proposals were received on December&nbsp;20, 2017. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg &#150; Clean Energy RFP &#150; </B>Pursuant to Section&nbsp;83a of the Green Communities Act in Massachusetts and similar clean energy directives established in Connecticut and Rhode Island,
state agencies and the electric distribution companies in the three states, including Fitchburg, issued an RFP for clean energy resources (including Class&nbsp;I renewable generation and large hydroelectric generation) in November 2015. The RFP
sought proposals for clean energy and transmission projects that can deliver new renewable energy to the three states. Project proposals were received in January 2016. Selection of contracts concluded during the fourth quarter of 2016 and contract
negotiations concluded during the second quarter of 2017. On September&nbsp;20, 2017, Fitchburg, along with the other three EDCs, filed for approval of the purchase power agreements which were negotiated as a result of the joint solicitation. A
hearing on the merits was held in February 2018. This matter remains pending. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg &#150; Other &#150; </B>On August&nbsp;25, 2017,
the Massachusetts Department of Energy Resources (&#147;DOER&#148;) issued its final Solar Massachusetts Renewable Target (SMART) Program regulations. These regulations were promulgated pursuant to Chapter 75 of the Acts of 2016, which required the
DOER to establish a new solar incentive program. The regulation is designed to support the continued development of an additional 1,600 MW of solar renewable energy generating sources via a declining block compensation mechanism. On
September&nbsp;12, 2017, the Massachusetts electric utilities jointly filed a model SMART tariff with the MDPU to implement the program and propose a cost recovery mechanism. Hearings on the merits were held in late March and early April 2018. This
filing remains pending. In the interim, the current program for solar renewable energy credits, known as <FONT STYLE="white-space:nowrap">SREC-II,</FONT> remains in effect for all eligible solar facilities. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">On May&nbsp;11, 2016, the MDPU issued an Order commencing a rulemaking proceeding to adopt emergency regulations amending 220 C.M.R. &#167; 18.00 et seq.
(&#147;Net Metering Regulations&#148;). Specifically, the MDPU amended its Net Metering Regulations to implement the net metering provisions of An Act Relative to Solar Energy, St. 2016, c. 75, &#167;&#167;
<FONT STYLE="white-space:nowrap">3-9,</FONT> and to make additional clerical changes to the Net Metering Regulations. On July&nbsp;15, 2016, the MDPU issued an order approving Final Net Metering Regulations. Fitchburg&#146;s tariff, filed in
compliance with the new regulations, was approved on February&nbsp;7, 2017. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In December&nbsp;2013, the MDPU opened an investigation into
Modernization of the Electric Grid. The stated objective of the Grid Modernization proceeding is to ensure that the electric distribution companies &#147;adopt grid modernization policies and practices.&#148; In June&nbsp;2014, the
</FONT></P>
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MDPU issued its first Grid Modernization order, setting forth a requirement that each electric distribution company submit a <FONT STYLE="white-space:nowrap">ten-year</FONT> strategic Grid
Modernization Plan (GMP). As part of the GMP, each company must include a five-year Short-Term Investment Plan (STIP), which must include an approach to achieving advanced metering functionality within five years of the Department&#146;s approval of
the GMP. The filing of a GMP is a recurring obligation and must be updated as part of subsequent base distribution rate cases, which by statute must occur no less often than every five years. Capital investments contained in the STIP are eligible
for <FONT STYLE="white-space:nowrap">pre-authorization,</FONT> meaning that the MDPU will not revisit in later filings whether the Company should have proceeded with these investments. Fitchburg and the Commonwealth&#146;s three other electric
distribution companies filed their initial GMPs on August&nbsp;19, 2015. These filings are currently under MDPU review and remain pending. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">On
January&nbsp;28, 2016 the MDPU approved Fitchburg&#146;s Three-Year Energy Efficiency Plan for 2016-2018, subject to limited modifications and directives in the Order. The Department found that the savings goals included in each Three-Year Plan are
reasonable and are consistent with the achievement of all available cost-effective energy efficiency; approved each Program Administrator&#146;s program implementation cost budget for the Three-Year Plans; approved the performance incentive pool,
mechanism, and payout rates; found that all proposed energy efficiency programs are cost-effective; found that funding sources are reasonable and that each Program Administrator may recover the funds to implement its energy efficiency plan through
its Energy Efficiency Surcharge; and found that each Program Administrator&#146;s Three-Year Plan is consistent with the Green Communities Act, the Guidelines, and Department precedent. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>FERC Transmission Formula Rate Proceedings &#150; </B>Pursuant to Section&nbsp;206 of the Federal Power Act, there are several pending proceedings before the FERC concerning the justness and
reasonableness of the Return on Equity (&#147;ROE&#148;) component of the <FONT STYLE="white-space:nowrap">ISO-New</FONT> England, Inc. Participating Transmission Owners&#146; Regional Network Service and Local Network Service formula rates. On
April&nbsp;14, 2017, the U.S. Court of Appeals for the D.C. Circuit issued an opinion vacating a decision of the FERC with respect to these formula rates, and remanded it for further proceedings. The FERC had found that the Transmission Owners
existing ROE was unlawful, and had set a new ROE. The Court found that the FERC had failed to articulate a satisfactory explanation for its orders. At this time, the ROE set in the vacated order will remain in place until further FERC action is
taken. Separately, on March&nbsp;15, 2018, the Transmission Owners filed a petition for review with the Court of certain orders of the FERC setting for hearing other complaints challenging the allowed return on equity component of the formula rates.
Fitchburg and Unitil Energy are Participating Transmission Owners, although Unitil Energy does not own transmission plant. To the extent that these proceedings result in any changes to the rates being charged, a retroactive reconciliation may be
required. The Company does not believe that these proceedings will have a material adverse impact on the Company&#146;s financial condition or results of operations. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>Legal Proceedings </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company is involved in legal and administrative proceedings and
claims of various types, which arise in the ordinary course of business. The Company believes, based upon information furnished by counsel and others, that the ultimate resolution of these claims will not have a material impact on its financial
position, operating results or cash flows. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In early 2009, a putative class action complaint was filed against Unitil&#146;s Massachusetts
based utility, Fitchburg, in Massachusetts&#146; Worcester Superior Court (the &#147;Court&#148;), (captioned Bellermann et al v. Fitchburg Gas and Electric Light Company). The Complaint seeks an unspecified amount of damages, including the cost of
temporary housing and alternative fuel sources, emotional and physical pain and suffering and property damages allegedly incurred by customers in connection with the loss of electric service during the ice storm in Fitchburg&#146;s
</FONT></P>
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service territory in December 2008. The Massachusetts Supreme Judicial Court issued an order denying class certification status in July&nbsp;2016, though the plaintiffs&#146; individual claims
remain pending. The Company continues to believe these claims are without merit and will continue to defend itself vigorously. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NOTE 7
&#150; ENVIRONMENTAL MATTERS </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>UNITIL&#146;S ENVIRONMENTAL MATTERS ARE DESCRIBED IN NOTE 8 TO THE FINANCIAL STATEMENTS IN ITEM&nbsp;8 OF
PART II OF UNITIL CORPORATION&#146;S FORM <FONT STYLE="white-space:nowrap">10-K</FONT> FOR DECEMBER&nbsp;31, 2017 AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY&nbsp;1, 2018. </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company&#146;s past and present operations include activities that are generally subject to extensive and complex federal and state environmental
laws and regulations. The Company is in material compliance with applicable environmental and safety laws and regulations and, as of March&nbsp;31, 2018, has not identified any material losses reasonably likely to be incurred in excess of recorded
amounts. However, we cannot assure that significant costs and liabilities will not be incurred in the future. It is possible that other developments, such as increasingly stringent federal, state or local environmental laws and regulations could
result in increased environmental compliance costs. Based on the Company&#146;s current assessment of its environmental responsibilities, existing legal requirements and regulatory policies, the Company does not believe that these environmental
costs will have a material adverse effect on the Company&#146;s consolidated financial position or results of operations. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northern
Utilities Manufactured Gas Plant Sites &#150; </B>Northern Utilities has an extensive program to identify, investigate and remediate former manufactured gas plant (MGP) sites, which were operated from the
<FONT STYLE="white-space:nowrap">mid-1800s</FONT> through the <FONT STYLE="white-space:nowrap">mid-1900s.</FONT> In New Hampshire, MGP sites were identified in Dover, Exeter, Portsmouth, Rochester and Somersworth. In Maine, Northern Utilities has
documented the presence of MGP sites in Lewiston and Portland, and a former MGP disposal site in Scarborough. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Northern Utilities has worked
with the Maine Department of Environmental Protection (ME DEP) and New Hampshire Department of Environmental Services (NH DES) to address environmental concerns with these sites. Northern Utilities or others have substantially completed remediation
of all sites, though on site monitoring continues and it is possible that future activities may be required. Supplemental remediation at the Exeter and Somersworth MGP sites commenced in the second quarter of 2018 with anticipated completions by the
third quarter of 2018. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The NHPUC and MPUC have approved regulatory mechanisms for the recovery of MGP environmental costs. For Northern
Utilities&#146; New Hampshire division, the NHPUC has approved the recovery of MGP environmental costs over succeeding seven-year periods. For Northern Utilities&#146; Maine division, the MPUC has authorized the recovery of environmental remediation
costs over succeeding five-&nbsp;year periods. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Environmental Obligations table below shows the amounts accrued for Northern Utilities
related to estimated future cleanup costs associated with Northern Utilities&#146; environmental remediation obligations for former MGP sites. Corresponding Regulatory Assets were recorded to reflect that the future recovery of these environmental
remediation costs is expected based on regulatory precedent and established practices. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fitchburg&#146;s Manufactured Gas Plant Site &#150;
</B>Fitchburg has worked with the Massachusetts Department of Environmental Protection to address environmental concerns with the former MGP site at Sawyer Passway, and has substantially completed remediation activities, though on site monitoring
will continue and it is possible that future activities may be required. </FONT></P>
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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Environmental Obligations table below shows the amounts accrued for Fitchburg related to estimated
future cleanup costs for permanent remediation of the Sawyer Passway site with a corresponding Regulatory Asset recorded to reflect that the recovery of these environmental remediation costs are probable through the regulatory process. The amounts
recorded do not assume any amounts are recoverable from insurance companies or other third parties. Fitchburg recovers the environmental response costs incurred at this former MGP site in gas rates pursuant to the terms of a cost recovery agreement
approved by the MDPU. Pursuant to this agreement, Fitchburg is authorized to amortize and recover environmental response costs from gas customers over succeeding seven-year periods. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The following table sets forth a summary of changes in the Company&#146;s liability for Environmental Obligations for the three months ended March&nbsp;31, 2018 and 2017. </FONT></P>
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<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Fitchburg</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Northern<BR>Utilities</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="22" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three months ended March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Balance at Beginning of Period</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>2.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>2.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Additions</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Less: Payments / Reductions</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Balance at End of Period</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>2.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>2.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.3 </FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Less: Current Portion</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Noncurrent Balance at End of Period</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NOTE 8: INCOME TAXES </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">In December 2017, the Tax Cuts and Jobs Act (TCJA), which included a reduction to the corporate federal income tax rate to 21% effective January 1, 2018, was signed into law. In accordance with GAAP
Accounting Standard 740, the Company revalued its Accumulated Deferred Income Taxes (ADIT) at the new 21% tax rate at which the ADIT will be reversed in future periods. The Company recorded reasonable estimates to reflect the impacts of the Tax Act
and recorded a net Regulatory Liability in the amount of $48.9 million at December 31, 2017 as a result of the ADIT revaluation. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">On
March&nbsp;15, 2018; FERC issued its Notice of Proposed Rulemaking in Docket No.&nbsp;RM18-11-000 in which FERC provided specific guidance on the flow back of excess ADIT: <I>The amount of the reduction to ADIT that was collected from customers but
is no longer payable to the IRS is excess ADIT and should be flowed back to ratepayers under general ratemaking principles. </I>Subject to regulatory approval, the Company expects to flow back to customers a net $47.1&nbsp;million of the excess ADIT
created as a result of the lowering of the statutory tax rate by the TCJA. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Based on communications received by the Company from its state
regulators in rate cases and other regulatory proceedings in the first quarter of 2018 and as prescribed in the TCJA, the recent FERC guidance noted above and IRS normalization rules; the benefit of these excess ADIT amounts will be subject to flow
back to customers in future utility rates according to the Average Rate Assumption Method (ARAM). ARAM reconciles excess ADIT at the reversal rate of the underlying book/tax temporary timing differences. The Company estimates the ARAM flow back
period to be between fifteen and twenty years. The Company&#146;s regulators and the IRS are each expected to issue guidance in future periods that will determine the final disposition of the re-measurement of regulatory deferred tax balances. At
this time, the Company has applied a reasonable interpretation of the TCJA and a reasonable estimate of the regulatory resolution. Future clarification of the TCJA and regulatory decisions may change the amounts estimated. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In addition to the excess $47.1 million ADIT amounts the Company expects to flow back to customers in future utility rates, as noted above, there was
$1.8 million of excess ADIT at December 31, 2017, which had not been previously included in customers&#146; utility rates. During 2018, the Company determined that since this excess ADIT had not been previously collected from utility customers; it
would, therefore, not be subject to flow back to customers in future rates. The Company will recognize a nonrecurring benefit in its tax provision as the underlying book/tax temporary differences reverse in the current and future periods.
</FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">51 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company filed its tax returns for the year ended December&nbsp;31, 2016 with the Internal Revenue
Service in September 2017 and generated additional federal net operating loss carryforward (NOLC) assets principally due to current tax repair deductions, tax depreciation and research and development deductions. In 2016, the Company recorded a
benefit of approximately $0.7&nbsp;million for New Hampshire business enterprise tax credits utilized in filing the Company&#146;s 2015 tax returns. For the year ended December&nbsp;31, 2017, the Company decreased its federal NOLC $1.1&nbsp;million
in the calculation of its provisions for income taxes for the period and revalued the NOLC by $10.1&nbsp;million for federal rate of 21% enacted in the TCJA. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">As of December&nbsp;31, 2017, the Company had recorded cumulative federal and state NOLC assets of $12.7&nbsp;million to offset against taxes payable in future periods. If unused, the Company&#146;s NOLC
carryforward assets will begin to expire in 2029. In addition, at December&nbsp;31, 2017, the Company had $3.5&nbsp;million of cumulative alternative minimum tax credits, general business tax credit and other state tax credit carryforwards to offset
future income taxes payable. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">In March 2018, Unitil Corporation received notice that its Federal Income Tax return filings for the years ended
December&nbsp;31, 2015 and&nbsp;December&nbsp;31, 2016 are under examination by the IRS. Currently, the Company believes that the ultimate resolution of this examination will not have a material impact on the Company&#146;s financial statements. The
Company remains subject to examination by New Hampshire tax authorities for the tax periods ended December&nbsp;31, 2014; December&nbsp;31, 2015; and December&nbsp;31, 2016. Income tax filings for the year ended December&nbsp;31, 2016 have been
filed with the New Hampshire Department of Revenue Administration. The State of Maine has concluded its review of the Company&#146;s tax returns for December&nbsp;31, 2014, December&nbsp;31, 2015, and December&nbsp;31, 2016 which resulted in a small
additional refund to the Company. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company evaluated its tax positions at March&nbsp;31, 2018 in accordance with the FASB Codification,
and has concluded that no adjustment for recognition, <FONT STYLE="white-space:nowrap">de-recognition,</FONT> settlement and foreseeable future events to any tax liabilities or assets as defined by the FASB Codification is required. The Company
remains subject to examination by Federal, Maine, Massachusetts, and New Hampshire tax authorities for the tax periods ended December&nbsp;31, 2014;&nbsp;December&nbsp;31, 2015; and December&nbsp;31, 2016. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company bills its customers for sales tax in Massachusetts and Maine and consumption tax in New Hampshire. These taxes are remitted to the
appropriate departments of revenue in each state and are excluded from revenues on the Company&#146;s unaudited Consolidated Statements of Earnings. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>NOTE 9: RETIREMENT BENEFIT OBLIGATIONS </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company
<FONT STYLE="white-space:nowrap">co-sponsors</FONT> the Unitil Corporation Retirement Plan (Pension Plan), the Unitil Retiree Health and Welfare Benefits Plan (PBOP Plan), and the Unitil Corporation Supplemental Executive Retirement Plan (SERP) to
provide certain pension and postretirement benefits for its retirees and current employees. Please see Note 10 to the Consolidated Financial Statements in the Company&#146;s Form <FONT STYLE="white-space:nowrap">10-K</FONT> for the year ended
December&nbsp;31, 2017 as filed with the SEC on February&nbsp;1, 2018 for additional information regarding these plans. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">52 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The following table includes the key weighted average assumptions used in determining the Company&#146;s
benefit plan costs and obligations: </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="91%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Used to Determine Plan Costs</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Discount Rate</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>3.60</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>%&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.10</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Rate of Compensation Increase</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>3.00</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>%&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Expected Long-term rate of return on plan assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>7.75</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>%&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.75</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Health Care Cost Trend Rate Assumed for Next Year</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>7.50</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>%&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Ultimate Health Care Cost Trend Rate</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>4.50</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>%&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Year that Ultimate Health Care Cost Trend Rate is reached</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>2024</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2025</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The following table provides the components of the Company&#146;s Retirement plan costs ($000&#146;s): </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="66%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Pension Plan</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>PBOP Plan</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>SERP</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:110pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months Ended March&nbsp;31,</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Service Cost</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>848</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">824</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>733</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">744</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>122</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">115</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest Cost</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1,469</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,514</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>851</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">978</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>101</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">98</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Expected Return on Plan Assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(1,946</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1,819</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(409</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(337</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&#151;&nbsp;&nbsp;</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Prior Service Cost Amortization</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>81</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">66</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>327</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">350</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>47</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">47</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Actuarial Loss Amortization</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1,447</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,176</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>346</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">524</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>122</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">74</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="white-space:nowrap">Sub-total</FONT></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1,899</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B></B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,761</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1,848</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,259</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>392</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">334</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Amounts Capitalized and Deferred</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(720</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(662</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(742</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1,037</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(113</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(99</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net Periodic Benefit Cost Recognized</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1,179</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,099</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1,106</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,222</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>279</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">235</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><U>Employer Contributions </U></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">As of March&nbsp;31, 2018, the Company had made $1.2&nbsp;million and $1.0&nbsp;million of contributions to its Pension Plan and PBOP Plan, respectively, in 2018. The Company, along with its subsidiaries,
expects to continue to make contributions to its Pension and PBOP Plans in 2018 and future years at minimum required and discretionary funding levels consistent with the amounts recovered in the distribution utilities&#146; rates for these Pension
and PBOP Plan costs. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">As of March&nbsp;31, 2018, the Company had made $43,900 of benefit payments under the SERP Plan in 2018. The Company
presently anticipates making an additional $356,300 of benefit payments under the SERP Plan in 2018. </FONT></P> <P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="8%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B></B><B><I><A NAME="tx544531_7"></A>Item&nbsp;3.</I></B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Quantitative and Qualitative Disclosures About Market Risk</I></B><B> </B></FONT></TD></TR></TABLE> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Reference is made to the &#147;Interest Rate Risk&#148; and &#147;Commodity Price Risk&#148; sections of Item 2. &#147;Management&#146;s Discussion and Analysis of Financial Condition and Results of
Operations&#148; (above). </FONT></P> <P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="8%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B></B><B><I><A NAME="tx544531_8"></A>Item&nbsp;4</I></B><B>.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B></B><B><I>Controls and Procedures </I></B><B> </B></FONT></TD></TR></TABLE> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Management of the Company, under the supervision and with the participation of the Company&#146;s Chief Executive Officer, Chief Financial Officer and Chief Accounting Officer, carried out an evaluation
of the effectiveness of the design and operation of the Company&#146;s disclosure controls and procedures as of March&nbsp;31, 2018. Based upon this evaluation, the Company&#146;s Chief Executive Officer, Chief Financial Officer and Chief Accounting
Officer concluded as of March&nbsp;31, 2018 that the Company&#146;s disclosure controls and procedures (as defined in Exchange Act Rules <FONT STYLE="white-space:nowrap">13a-15(e)</FONT> and <FONT STYLE="white-space:nowrap">15(d)-15(e))</FONT> are
effective. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">53 </FONT></P>



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<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">There have been no changes in the Company&#146;s internal control over financial reporting (as defined in
Exchange Act <FONT STYLE="white-space:nowrap">Rules&nbsp;13a-15(f)</FONT> and <FONT STYLE="white-space:nowrap">15(d)-15(f))</FONT> during the fiscal quarter covered by this Form <FONT STYLE="white-space:nowrap">10-Q</FONT> that have materially
affected, or are reasonably likely to materially affect, the Company&#146;s internal control over financial reporting. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>PART II. OTHER
INFORMATION </B></FONT></P> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="8%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I><A NAME="tx544531_9"></A>Item&nbsp;1.</I></B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Legal Proceedings </I></B></FONT></TD></TR></TABLE> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company is
involved in legal and administrative proceedings and claims of various types, which arise in the ordinary course of business. Certain specific matters are discussed in Notes 6 and 7 to the unaudited Consolidated Financial Statements. In the opinion
of Management, based upon information furnished by counsel and others, the ultimate resolution of these claims will not have a material impact on the Company&#146;s financial position. </FONT></P>
<P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="8%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I><A NAME="tx544531_10"></A>Item&nbsp;1A.</I></B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Risk Factors </I></B></FONT></TD></TR></TABLE> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">There have been no
material changes to the risk factors disclosed in the Company&#146;s Form <FONT STYLE="white-space:nowrap">10-K</FONT> for the year-ended December&nbsp;31, 2017 as filed with the SEC on February&nbsp;1, 2018. </FONT></P>
<P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="8%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I><A NAME="tx544531_11"></A>Item&nbsp;2.</I></B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Unregistered Sales of Equity Securities and Use of Proceeds </I></B></FONT></TD></TR></TABLE> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>Recent Sales of Unregistered Securities </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">There were no sales of unregistered equity
securities by the Company during the fiscal quarter ended March&nbsp;31, 2018. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Issuer Purchases of Equity Securities </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pursuant to the written trading plan under Rule <FONT STYLE="white-space:nowrap">10b5-1</FONT> under the Securities Exchange Act of 1934, as amended (the
Exchange Act), adopted by the Company on May&nbsp;1, 2017, the Company will periodically repurchase shares of its Common Stock on the open market related to Employee Length of Service Awards and the stock portion of the Directors&#146; annual
retainer for those Directors who elected to receive common stock. There is no pool or maximum number of shares related to these purchases; however, the trading plan will terminate when $85,000 in value of shares have been purchased or, if sooner, on
May&nbsp;1, 2018. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company may suspend or terminate this trading plan at any time, so long as the suspension or termination is made in
good faith and not as part of a plan or scheme to evade the prohibitions of Rule <FONT STYLE="white-space:nowrap">10b-5</FONT> under the Exchange Act, or other applicable securities laws. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">54 </FONT></P>



<p Style='page-break-before:always'>
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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The following table shows information regarding repurchases by the Company of shares of its common stock
pursuant to the trading plan for each month in the quarter ended March&nbsp;31, 2018. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="56%"></TD>
<TD VALIGN="bottom" WIDTH="8%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="8%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="8%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="8%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total<BR>Number<BR>of Shares<BR>Purchased</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Average<BR>Price&nbsp;Paid<BR>per Share</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total&nbsp;Number&nbsp;of<BR>Shares&nbsp;Purchased&nbsp;as<BR>Part of Publicly<BR>Announced Plans
or<BR>Programs</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Approximate&nbsp;Dollar<BR>Value&nbsp;of&nbsp;Shares&nbsp;that<BR>May Yet
Be<BR>Purchased&nbsp;Under&nbsp;the<BR>Plans or Programs</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">1/1/18 &#150; 1/31/18</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,039</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">2/1/18 &#150; 2/28/18</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,039</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">3/1/18 &#150; 3/31/18</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">122</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">42.48</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">122</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,856</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">122</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">42.48</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">122</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
</TABLE> <P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="8%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I><A NAME="tx544531_14"></A>Item&nbsp;5.</I></B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Other Information </I></B></FONT></TD></TR></TABLE> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">On
April&nbsp;26, 2018, the Company issued a press release announcing its results of operations for the three-month period ended March&nbsp;31, 2018. The press release is furnished with this Quarterly Report on Form
<FONT STYLE="white-space:nowrap">10-Q</FONT> as Exhibit 99.1. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">55 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>


<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="8%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I><A NAME="tx544531_15"></A>Item&nbsp;6.</I></B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><I>Exhibits </I></B></FONT></TD></TR></TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">(a)</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Exhibits </FONT></TD></TR></TABLE> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="7%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="80%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:39pt ; display:inline;"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Exhibit No.</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" STYLE="border-bottom:1px solid #000000"> <P STYLE="margin-top:0px;margin-bottom:1px"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Description of Exhibit</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Reference</B></FONT></TD></TR>


<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;10.1</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="http://www.sec.gov/Archives/edgar/data/755001/000119312518068935/d505401dex101.htm">Employment Agreement effective April&nbsp;
25, 2018 between Unitil Corporation and Thomas P. Meissner, Jr.</A></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Exhibit&nbsp;10.1&nbsp;to</FONT><BR>
<P STYLE="margin-bottom:0px; margin-top:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="white-space:nowrap">Form&nbsp;8-K&nbsp;dated</FONT><BR>March&nbsp;1,&nbsp;2018<BR>(SEC&nbsp;File&nbsp;No.</FONT></P>
<P STYLE="margin-bottom:1px; margin-top:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="white-space:nowrap">1-8858)</FONT></FONT></P></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;11</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="d544531dex11.htm">Computation in Support of Earnings Per Average Common Share </A></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Filed herewith</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;31.1</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="d544531dex311.htm">Certification of Chief Executive Officer Pursuant to Rule <FONT STYLE="white-space:nowrap">13a-14</FONT> of the Exchange Act, as Adopted Pursuant to Section&nbsp;302
 of the Sarbanes-Oxley Act of 2002</A></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Filed herewith</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;31.2</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="d544531dex312.htm">Certification of Chief Financial Officer Pursuant to Rule <FONT STYLE="white-space:nowrap">13a-14</FONT> of the Exchange Act, as Adopted Pursuant to Section&nbsp;302
 of the Sarbanes-Oxley Act of 2002</A></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Filed herewith</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;31.3</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="d544531dex313.htm">Certification of Chief Accounting Officer Pursuant to Rule <FONT STYLE="white-space:nowrap">13a-14</FONT> of the Exchange Act, as Adopted Pursuant to Section&nbsp;302
 of the Sarbanes-Oxley Act of 2002</A></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Filed herewith</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;32.1</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="d544531dex321.htm">Certifications of Chief Executive Officer, Chief Financial Officer and Chief Accounting Officer Pursuant to 18 U.S.C. Section&nbsp;
1350, as Adopted Pursuant to Section&nbsp;906 of the Sarbanes-Oxley Act of 2002</A></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Filed herewith</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;99.1</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="d544531dex991.htm">Unitil Corporation Press Release Dated April&nbsp;26, 2018 Announcing Earnings For the Quarter Ended March&nbsp;31, 2018.</A></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Filed herewith</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">101.INS</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">XBRL Instance Document.</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Filed herewith</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">101.SCH</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">XBRL Taxonomy Extension Schema Document.</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Filed herewith</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">101.CAL</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">XBRL Taxonomy Extension Calculation Linkbase Document.</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Filed herewith</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">101.DEF</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">XBRL Taxonomy Extension Definition Linkbase Document</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Filed herewith</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">101.LAB</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">XBRL Taxonomy Extension Label Linkbase Document.</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Filed herewith</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">101.PRE</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">XBRL Taxonomy Extension Presentation Linkbase Document.</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Filed herewith</FONT></TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">56 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx544531_16"></A>SIGNATURES </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="51%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="48%"></TD></TR>


<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="2">UNITIL CORPORATION</FONT></P></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">(Registrant)</FONT></P></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="2">Date:&nbsp;April&nbsp;26, 2018</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="2">/s/ Mark H. Collin</FONT></P></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Mark H. Collin</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Chief Financial Officer</FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="2">Date:&nbsp;April&nbsp;26, 2018</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="2">/s/ Laurence M. Brock</FONT></P></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Laurence M. Brock</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Chief Accounting Officer</FONT></TD></TR>
</TABLE> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">57 </FONT></P>


</BODY></HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-11
<SEQUENCE>2
<FILENAME>d544531dex11.htm
<DESCRIPTION>EX-11
<TEXT>
<HTML><HEAD>
<TITLE>EX-11</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE">

 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right"><B>EXHIBIT 11 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>UNITIL CORPORATION AND SUBSIDIARY COMPANIES </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>COMPUTATION OF EARNINGS PER AVERAGE COMMON SHARE OUTSTANDING </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><I>($ Millions, except for per share data) </I></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">(UNAUDITED) </P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" ALIGN="center">


<TR>
<TD WIDTH="86%"></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1.00pt solid #000000"><B>Three Months Ended</B><br><B>March&nbsp;31,</B></TD>
<TD VALIGN="bottom">&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1.00pt solid #000000"><B>2018</B></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1.00pt solid #000000"><B>2017</B></TD>
<TD VALIGN="bottom">&nbsp;</TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Net Income</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"><B>$</B></TD>
<TD VALIGN="bottom" ALIGN="right"><B>15.6</B></TD>
<TD NOWRAP VALIGN="bottom"><B>&nbsp;</B></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom">$</TD>
<TD VALIGN="bottom" ALIGN="right">12.4</TD>
<TD NOWRAP VALIGN="bottom">&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:3.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Less: Dividend Requirements on Preferred Stock</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD NOWRAP VALIGN="bottom"><B>&nbsp;</B></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><B>&#151;&nbsp;&nbsp;</B></TD>
<TD NOWRAP VALIGN="bottom"><B>&nbsp;</B></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD NOWRAP VALIGN="bottom">&nbsp;</TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right">&#151;&nbsp;&nbsp;</TD>
<TD NOWRAP VALIGN="bottom">&nbsp;</TD></TR>
<TR STYLE="font-size:1px; ">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; border-top:1.00px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; border-top:1.00px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; border-top:1.00px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; border-top:1.00px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Net Income Applicable to Common Stock</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"><B>$</B></TD>
<TD VALIGN="bottom" ALIGN="right"><B>15.6</B></TD>
<TD NOWRAP VALIGN="bottom"><B>&nbsp;</B></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom">$</TD>
<TD VALIGN="bottom" ALIGN="right">12.4</TD>
<TD NOWRAP VALIGN="bottom">&nbsp;</TD></TR>
<TR STYLE="font-size:1px; ">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; border-top:3.00px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; border-top:3.00px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; border-top:3.00px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; border-top:3.00px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Weighted Average Number of Common Shares Outstanding &#150; Basic (000&#146;s)</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"><B>&nbsp;</B></TD>
<TD VALIGN="bottom" ALIGN="right"><B>14,803</B></TD>
<TD NOWRAP VALIGN="bottom"><B>&nbsp;</B></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom" ALIGN="right">14,042</TD>
<TD NOWRAP VALIGN="bottom">&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Dilutive Effect of Stock Options and Restricted Stock (000&#146;s)</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"><B>&nbsp;</B></TD>
<TD VALIGN="bottom" ALIGN="right"><B>3</B></TD>
<TD NOWRAP VALIGN="bottom"><B>&nbsp;</B></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom" ALIGN="right">6</TD>
<TD NOWRAP VALIGN="bottom">&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Weighted Average Number of Common Shares Outstanding &#150; Diluted (000&#146;s)</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"><B>&nbsp;</B></TD>
<TD VALIGN="bottom" ALIGN="right"><B>14,806</B></TD>
<TD NOWRAP VALIGN="bottom"><B>&nbsp;</B></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom" ALIGN="right">14,048</TD>
<TD NOWRAP VALIGN="bottom">&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Earnings Per Share &#150; Basic</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"><B>$</B></TD>
<TD VALIGN="bottom" ALIGN="right"><B>1.06</B></TD>
<TD NOWRAP VALIGN="bottom"><B>&nbsp;</B></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom">$</TD>
<TD VALIGN="bottom" ALIGN="right">0.88</TD>
<TD NOWRAP VALIGN="bottom">&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Earnings Per Share &#150; Diluted</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"><B>$</B></TD>
<TD VALIGN="bottom" ALIGN="right"><B>1.06</B></TD>
<TD NOWRAP VALIGN="bottom"><B>&nbsp;</B></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom">$</TD>
<TD VALIGN="bottom" ALIGN="right">0.88</TD>
<TD NOWRAP VALIGN="bottom">&nbsp;</TD></TR>
</TABLE>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>3
<FILENAME>d544531dex311.htm
<DESCRIPTION>EX-31.1
<TEXT>
<HTML><HEAD>
<TITLE>EX-31.1</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE">

 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right"><B>Exhibit 31.1 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>CERTIFICATION UNDER SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">I, Thomas P. Meissner, Jr., certify that: </P> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">1)</TD>
<TD ALIGN="left" VALIGN="top">I have reviewed this quarterly report on Form <FONT STYLE="white-space:nowrap">10-Q</FONT> of Unitil Corporation; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">2)</TD>
<TD ALIGN="left" VALIGN="top">Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by this report; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">3)</TD>
<TD ALIGN="left" VALIGN="top">Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this report; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">4)</TD>
<TD ALIGN="left" VALIGN="top">The registrant&#146;s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules
<FONT STYLE="white-space:nowrap">13a-15(e)</FONT> and <FONT STYLE="white-space:nowrap">15d-15(e))</FONT> and internal control over financial reporting (as defined in Exchange Act Rules <FONT STYLE="white-space:nowrap">13a-15(f)</FONT> and <FONT
STYLE="white-space:nowrap">15d-15(f))</FONT> for the registrant and have: </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">a)</TD>
<TD ALIGN="left" VALIGN="top">Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its
consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">b)</TD>
<TD ALIGN="left" VALIGN="top">Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of
financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">c)</TD>
<TD ALIGN="left" VALIGN="top">Evaluated the effectiveness of the registrant&#146;s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of
the period covered by this report based on such evaluation; and </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">d)</TD>
<TD ALIGN="left" VALIGN="top">Disclosed in this report any changes in the registrant&#146;s internal control over financial reporting that occurred during the registrant&#146;s most recent fiscal quarter (the registrant&#146;s fourth fiscal quarter
in the case of an annual report) that has materially affected, or is reasonable likely to materially affect, the registrant&#146;s internal controls over financial reporting; and </TD></TR></TABLE>
<P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">5)</TD>
<TD ALIGN="left" VALIGN="top">The registrant&#146;s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant&#146;s auditors and the audit committee of the
registrant&#146;s board of directors (or persons performing the equivalent functions): </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">a)</TD>
<TD ALIGN="left" VALIGN="top">All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant&#146;s ability to record,
process, summarize and report financial information; and </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">b)</TD>
<TD ALIGN="left" VALIGN="top">Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant&#146;s internal control over financial reporting. </TD></TR></TABLE>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><DIV ALIGN="right">
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="40%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt">


<TR>
<TD WIDTH="100%"></TD></TR>


<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">Date: April&nbsp;26, 2018</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="16"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE="margin-top:0pt; margin-bottom:1pt; border-bottom:1px solid #000000; font-size:10pt; font-family:Times New Roman">/s/ Thomas P. Meissner, Jr</P></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">Thomas P. Meissner, Jr.</TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Chief Executive Officer and President</P></TD></TR>
</TABLE></DIV>
</BODY></HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>4
<FILENAME>d544531dex312.htm
<DESCRIPTION>EX-31.2
<TEXT>
<HTML><HEAD>
<TITLE>EX-31.2</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE">

 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right"><B>Exhibit 31.2 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>CERTIFICATION UNDER SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">I, Mark H. Collin, certify that: </P> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">1)</TD>
<TD ALIGN="left" VALIGN="top">I have reviewed this quarterly report on Form <FONT STYLE="white-space:nowrap">10-Q</FONT> of Unitil Corporation; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">2)</TD>
<TD ALIGN="left" VALIGN="top">Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by this report; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">3)</TD>
<TD ALIGN="left" VALIGN="top">Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this report; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">4)</TD>
<TD ALIGN="left" VALIGN="top">The registrant&#146;s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules
<FONT STYLE="white-space:nowrap">13a-15(e)</FONT> and <FONT STYLE="white-space:nowrap">15d-15(e))</FONT> and internal control over financial reporting (as defined in Exchange Act Rules <FONT STYLE="white-space:nowrap">13a-15(f)</FONT> and <FONT
STYLE="white-space:nowrap">15d-15(f))</FONT> for the registrant and have: </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">a)</TD>
<TD ALIGN="left" VALIGN="top">Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its
consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">b)</TD>
<TD ALIGN="left" VALIGN="top">Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of
financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">c)</TD>
<TD ALIGN="left" VALIGN="top">Evaluated the effectiveness of the registrant&#146;s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of
the period covered by this report based on such evaluation; and </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">d)</TD>
<TD ALIGN="left" VALIGN="top">Disclosed in this report any changes in the registrant&#146;s internal control over financial reporting that occurred during the registrant&#146;s most recent fiscal quarter (the registrant&#146;s fourth fiscal quarter
in the case of an annual report) that has materially affected, or is reasonable likely to materially affect, the registrant&#146;s internal controls over financial reporting; and </TD></TR></TABLE>
<P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">5)</TD>
<TD ALIGN="left" VALIGN="top">The registrant&#146;s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant&#146;s auditors and the audit committee of the
registrant&#146;s board of directors (or persons performing the equivalent functions): </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">a)</TD>
<TD ALIGN="left" VALIGN="top">All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant&#146;s ability to record,
process, summarize and report financial information; and </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">b)</TD>
<TD ALIGN="left" VALIGN="top">Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant&#146;s internal control over financial reporting. </TD></TR></TABLE>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><DIV ALIGN="right">
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="40%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt">


<TR>
<TD WIDTH="100%"></TD></TR>


<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">Date: April&nbsp;26, 2018</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="16"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE="margin-top:0pt; margin-bottom:1pt; border-bottom:1px solid #000000; font-size:10pt; font-family:Times New Roman">/s/ Mark H. Collin</P></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Mark H. Collin</P></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">Chief Financial Officer</TD></TR>
</TABLE></DIV> <P STYLE="font-size:12pt; margin-top:0pt; margin-bottom:0pt">&nbsp;</P>
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</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.3
<SEQUENCE>5
<FILENAME>d544531dex313.htm
<DESCRIPTION>EX-31.3
<TEXT>
<HTML><HEAD>
<TITLE>EX-31.3</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE">

 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right"><B>Exhibit 31.3 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>CERTIFICATION UNDER SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">I, Laurence M. Brock, certify that: </P> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">1)</TD>
<TD ALIGN="left" VALIGN="top">I have reviewed this quarterly report on Form <FONT STYLE="white-space:nowrap">10-Q</FONT> of Unitil Corporation; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">2)</TD>
<TD ALIGN="left" VALIGN="top">Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by this report; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">3)</TD>
<TD ALIGN="left" VALIGN="top">Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this report; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">4)</TD>
<TD ALIGN="left" VALIGN="top">The registrant&#146;s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules
<FONT STYLE="white-space:nowrap">13a-15(e)</FONT> and <FONT STYLE="white-space:nowrap">15d-15(e))</FONT> and internal control over financial reporting (as defined in Exchange Act Rules <FONT STYLE="white-space:nowrap">13a-15(f)</FONT> and <FONT
STYLE="white-space:nowrap">15d-15(f))</FONT> for the registrant and have: </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">a)</TD>
<TD ALIGN="left" VALIGN="top">Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its
consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">b)</TD>
<TD ALIGN="left" VALIGN="top">Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of
financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">c)</TD>
<TD ALIGN="left" VALIGN="top">Evaluated the effectiveness of the registrant&#146;s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of
the period covered by this report based on such evaluation; and </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">d)</TD>
<TD ALIGN="left" VALIGN="top">Disclosed in this report any changes in the registrant&#146;s internal control over financial reporting that occurred during the registrant&#146;s most recent fiscal quarter (the registrant&#146;s fourth fiscal quarter
in the case of an annual report) that has materially affected, or is reasonable likely to materially affect, the registrant&#146;s internal controls over financial reporting; and </TD></TR></TABLE>
<P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left">5)</TD>
<TD ALIGN="left" VALIGN="top">The registrant&#146;s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant&#146;s auditors and the audit committee of the
registrant&#146;s board of directors (or persons performing the equivalent functions): </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">a)</TD>
<TD ALIGN="left" VALIGN="top">All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant&#146;s ability to record,
process, summarize and report financial information; and </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">b)</TD>
<TD ALIGN="left" VALIGN="top">Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant&#146;s internal control over financial reporting. </TD></TR></TABLE>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><DIV ALIGN="right">
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<TD VALIGN="top">Date: April&nbsp;26, 2018</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="16"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">/s/ Laurence M. Brock</TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="bottom">Laurence M. Brock</TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="bottom">Chief Accounting Officer</TD></TR>
</TABLE></DIV>
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<DOCUMENT>
<TYPE>EX-32.1
<SEQUENCE>6
<FILENAME>d544531dex321.htm
<DESCRIPTION>EX-32.1
<TEXT>
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<TITLE>EX-32.1</TITLE>
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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right"><B>Exhibit 32.1 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>CERTIFICATION PURSUANT TO </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>18 U.S.C. SECTION 1350, </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>AS ADOPTED PURSUANT TO </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">In connection with the Quarterly Report of Unitil Corporation (the &#147;Company&#148;) on Form <FONT STYLE="white-space:nowrap">10-Q</FONT> for the period
ending March&nbsp;31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the &#147;Report&#148;), each of the undersigned Thomas P. Meissner, Jr., Chief Executive Officer and President, Mark H. Collin, Chief Financial
Officer and Laurence M. Brock, Chief Accounting Officer, certifies, to the best knowledge and belief of the signatory, pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that: </P>
<P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">(1)</TD>
<TD ALIGN="left" VALIGN="top">The Report fully complies with the requirements of Section&nbsp;13(a) or 15(d) of the Securities Exchange Act of 1934; and </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">(2)</TD>
<TD ALIGN="left" VALIGN="top">The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. </TD></TR></TABLE>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="44%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD WIDTH="15%"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<TD VALIGN="bottom" NOWRAP ALIGN="center"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; border-bottom:1.00pt solid #000000; width:30.60pt; display:inline; font-size:8pt; font-family:Times New Roman; " ALIGN="center">Signature</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; border-bottom:1.00pt solid #000000; width:28.40pt; display:inline; font-size:8pt; font-family:Times New Roman; " ALIGN="center">Capacity</P></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom" NOWRAP ALIGN="center"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; border-bottom:1.00pt solid #000000; width:15.10pt; display:inline; font-size:8pt; font-family:Times New Roman; " ALIGN="center">Date</P></TD></TR>


<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">/s/ Thomas P. Meissner, Jr</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">Thomas P. Meissner, Jr.</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Chief Executive Officer and President</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top">April&nbsp;26, 2018</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">/s/ Mark H. Collin</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">Mark H. Collin</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Chief Financial Officer</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top">April&nbsp;26, 2018</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">/s/ Laurence M. Brock</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">Laurence M. Brock</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Chief Accounting Officer</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top">April&nbsp;26, 2018</TD></TR>
</TABLE>
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<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>7
<FILENAME>d544531dex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
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<TITLE>EX-99.1</TITLE>
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 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Exhibit 99.1 </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>Page 1 of 4 </B></FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="margin-top:0px;margin-bottom:0px">


<IMG SRC="g54453163.jpg" ALT="LOGO">
 </P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><U>FOR RELEASE </U></B></FONT></P> <P STYLE="margin-top:24px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>UNITIL REPORTS FIRST QUARTER EARNINGS </B></FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>HAMPTON, N.H., APRIL</B><B></B><B>&nbsp;26, 2018
&#151;</B> Unitil Corporation (NYSE: UTL) (<U>www.unitil.com</U>) today announced Net Income of $15.6&nbsp;million, or $1.06 per share, for the first quarter of 2018, an increase of $3.2&nbsp;million in Net Income, and $0.18 in Earnings Per Share,
compared to the first quarter of 2017. The Company&#146;s earnings in the first quarter of 2018 were driven by higher natural gas and electric sales and margins, reflecting: customer growth, colder winter weather and new distribution rates compared
to the first quarter of 2017. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#147;We are pleased with our first quarter results, which benefited from continued growth in our customer
base, cold winter weather and our regulatory agenda,&#148; said Thomas P. Meissner, Jr., Unitil&#146;s Chairman and Chief Executive Officer. &#147;We will continue to focus on expanding and upgrading our distribution system to support future growth
while delivering safe and reliable service to customers.&#148; </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Natural gas sales margin was $39.9&nbsp;million in the three months ended
March&nbsp;31, 2018, an increase of $1.9&nbsp;million compared to the same period in 2017. Gas sales margin in the first quarter of 2018 was positively affected by colder weather and customer growth of $1.8&nbsp;million and higher natural gas
distribution rates of $1.6&nbsp;million, partially offset by lower revenue of $1.5&nbsp;million to account for the reduction in rates due to the lower corporate income tax rate of 21% under the Tax Cuts and Jobs Act of 2017 (TCJA). </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Natural gas therm sales increased 9.5% in the three months ended March&nbsp;31, 2018 compared to the same period in 2017. Based on weather data collected
in the Company&#146;s natural gas service areas, there were 10% more Heating Degree Days in the first quarter of 2018 compared to the same period in 2017. As of March&nbsp;31, 2018, the number of total natural gas customers served has increased by
1,478 in the last twelve months. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Electric sales margin was $22.3&nbsp;million in the three months ended March&nbsp;31, 2018, an increase of
$0.3&nbsp;million compared to the same period in 2017. Electric sales margin in the first quarter of 2018 was positively affected by higher electric distribution rates of $0.9&nbsp;million as well as colder weather and customer growth of
$0.2&nbsp;million, partially offset by lower revenue of $0.8&nbsp;million to account for the reduction in rates due to the lower corporate income tax rate of 21% under the TCJA. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">6 Liberty
Lane West </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Hampton, NH 03842 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2">T 603.772.0775 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">www.unitil.com </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B> Page
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 of 4 </B></FONT></P> <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total
electric kWh sales increased 5.8% compared to the first quarter of 2017. As of March&nbsp;31, 2018, the number of total electric customers served has increased by 516 in the last twelve months. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Operation and Maintenance (O&amp;M) expenses increased $1.3&nbsp;million in the three months ended March&nbsp;31, 2018 compared to the same period in
2017. The change in O&amp;M expenses reflects an increase in compensation and benefit costs of $0.7&nbsp;million, bad debt expenses of $0.2&nbsp;million and utility operating costs of $0.4&nbsp;million. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Depreciation and Amortization expense decreased $0.2&nbsp;million in the three months ended March&nbsp;31, 2018 compared to the same period in 2017,
reflecting lower amortization of deferred major storm costs, partially offset by higher utility plant in service and amortization of information system and software costs. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Taxes Other Than Income Taxes increased $0.3&nbsp;million in the three months ended March&nbsp;31, 2018 compared to the same period in 2017, primarily reflecting higher local property taxes on higher
levels of utility plant assets in service. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest Expense, net was essentially unchanged in the three months ended March&nbsp;31, 2018
compared to the same period in 2017, reflecting higher interest on long-term debt offset by lower net interest expense on net regulatory assets/liabilities and lower levels of short-term debt. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income Taxes decreased by $2.9&nbsp;million for the three months ended March&nbsp;31, 2018 compared to the same period in 2017, reflecting
$2.3&nbsp;million from a lower tax rate on higher <FONT STYLE="white-space:nowrap">pre-tax</FONT> earnings in Q1 2018 (see revenue discussion above) and the current tax benefit of $0.6&nbsp;million on book/tax items not previously included in
customers&#146; utility rates. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">At its January 2018 and April 2018 meetings, the Unitil Corporation Board of Directors declared quarterly
dividends on the Company&#146;s common stock of $0.365 per share. These quarterly dividends result in a current effective annualized dividend rate to $1.46 per share, representing an unbroken record of quarterly dividend payments since trading began
in Unitil&#146;s common stock. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">6 Liberty
Lane West </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Hampton, NH 03842 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2">T 603.772.0775 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">www.unitil.com </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B> Page
 3
 of 4 </B></FONT></P> <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The
Company&#146;s earnings are seasonal and are typically higher in the first and fourth quarters when customers use natural gas for heating purposes. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The Company will hold a quarterly conference call to discuss first quarter 2018 results on Thursday, April&nbsp;26, 2018, at 2:00 p.m. Eastern Time. This call is being webcast and can be accessed in the
Investor Relations section of Unitil&#146;s website, <U>www.unitil.com</U>. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><U>About Unitil Corporation </U></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Unitil Corporation provides energy for life by safely and reliably delivering natural gas and electricity in New England. We are committed to the
communities we serve and to developing people, business practices, and technologies that lead to the delivery of dependable, more efficient energy.<I> </I>Unitil Corporation is a public utility holding company with operations in Maine, New Hampshire
and Massachusetts. Together, Unitil&#146;s operating utilities serve approximately 105,000 electric customers and 81,300 natural gas customers. Other subsidiaries include Usource, Unitil&#146;s <FONT STYLE="white-space:nowrap">non-regulated</FONT>
business segment. For more information about our people, technologies, and community involvement please visit <U>www.unitil.com</U>. </FONT></P>
<P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><U>Forward-Looking Statements </U></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">This press
release may contain forward-looking statements. All statements, other than statements of historical fact, included in this press release are forward-looking statements. Forward-looking statements include declarations regarding Unitil&#146;s beliefs
and current expectations. These forward-looking statements are subject to the inherent risks and uncertainties in predicting future results and conditions that could cause the actual results to differ materially from those projected in these
forward-looking statements. Some, but not all, of the risks and uncertainties include the following: Unitil&#146;s regulatory environment (including regulations relating to climate change, greenhouse gas emissions and other environmental matters);
fluctuations in the supply of, the demand for, and the prices of, gas and electric energy commodities and transmission and transportation capacity and Unitil&#146;s ability to recover energy supply costs in its rates; customers&#146; preferred
energy sources; severe storms and Unitil&#146;s ability to recover storm costs in its rates; general economic conditions; variations in weather; long-term global climate change; Unitil&#146;s ability to retain its existing customers and attract new
customers; increased competition; and other risks detailed in Unitil&#146;s filings with the Securities and Exchange Commission. These forward looking statements speak only as of the date they are made. Unitil undertakes no obligation, and does not
intend, to update these forward-looking statements. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>For more information please contact: </B></FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">David Chong &#150; Investor Relations</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Alec O&#146;Meara &#150; Media Relations</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Phone: <FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap">603-773-6499</FONT></FONT></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Phone: <FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap">603-773-6404</FONT></FONT></FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Email: chong@unitil.com</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Email: omeara@unitil.com</FONT></TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">6 Liberty
Lane West </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Hampton, NH 03842 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2">T 603.772.0775 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">www.unitil.com </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B> Page
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 of 4 </B></FONT></P> <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Selected
financial data for 2018 and 2017 is presented in the following table: </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Unitil Corporation &#150; Condensed Financial Data
</B></FONT></P> <P STYLE="line-height:3px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000">&nbsp;</P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>(Millions,
except Per Share and Shares Data) (Unaudited) </I></FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="83%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="10" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three&nbsp;Months&nbsp;Ended&nbsp;March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2018</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2017</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><U>Gas Therm Sales:</U></B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Residential</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">23.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">21.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">13.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Commercial/Industrial</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">70.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">64.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:7.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Gas Therm Sales</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>94.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>85.9</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>9.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>%&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><U>Electric kWh Sales:</U></B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Residential</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">188.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">176.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:2.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Commercial/Industrial</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">247.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">236.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:7.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Electric kWh Sales</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>436.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>412.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>5.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>%&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Gas Revenues</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>87.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>74.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>12.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cost of Gas Sales</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">47.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">36.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Gas Sales Margin</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>39.9</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>38.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.9</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Electric Revenues</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>57.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>49.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>8.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cost of Electric Sales</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">35.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">27.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Electric Sales Margin</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>22.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>22.0</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD>
<TD HEIGHT="8" COLSPAN="4"></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Usource Revenues</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.7</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(0.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>)&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:9.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Total Sales Margin</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>63.5</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>61.7</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.8</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Operation&nbsp;&amp; Maintenance Expenses</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">17.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">16.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Depreciation&nbsp;&amp; Amortization</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(0.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Property&nbsp;&amp; Other Taxes</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other Expense (Income), net</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest Expense, Net</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Income Before Income Taxes</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>20.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>20.1</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.3</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income Tax Expense</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(2.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Net Income</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>15.6</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>12.4</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>3.2</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff" STYLE="page-break-inside:avoid">
<TD VALIGN="top"> <P STYLE="margin-left:6.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Earnings Per Share</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.06</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.88</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>$</B></FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0.18</B></FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;</B></FONT></TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">6 Liberty
Lane West </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Hampton, NH 03842 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2">T 603.772.0775 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">www.unitil.com </FONT></P>

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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.INS
<SEQUENCE>8
<FILENAME>utl-20180331.xml
<DESCRIPTION>XBRL INSTANCE DOCUMENT
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!-- DFS Xcelerate Instance Document - http://www.dfsco.com/financial-services/ -->
<!-- Version:  6.23.6 -->
<!-- Round: 3 -->
<!-- Creation date: 2018-04-25T19:22:44Z -->
<!-- Copyright (c) 2017 Donnelley Financial, LLC. All Rights Reserved. -->
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 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Cash and Cash
 Equivalents &amp;#x2013;&lt;/b&gt; Cash and Cash Equivalents includes all cash
 and cash equivalents to which the Company has legal title. Cash
 equivalents include short-term investments with original maturities
 of three months or less and interest bearing deposits. The
 Company&amp;#x2019;s cash and cash equivalents are held at financial
 institutions and at times may exceed federally insured limits. The
 Company has not experienced any losses in such accounts. Under the
 Independent System Operator&amp;#x2014;New England &lt;font style="WHITE-SPACE: nowrap"&gt;(ISO-NE)&lt;/font&gt; Financial Assurance Policy
 (Policy), Unitil&amp;#x2019;s subsidiaries Unitil Energy, Fitchburg and
 Unitil Power are required to provide assurance of their ability to
 satisfy their obligations to &lt;font style="WHITE-SPACE: nowrap"&gt;ISO-NE.&lt;/font&gt; Under this Policy,
 Unitil&amp;#x2019;s subsidiaries provide cash deposits covering
 approximately &lt;font style="WHITE-SPACE: nowrap"&gt;2-1/2&lt;/font&gt; months
 of outstanding obligations, less credit amounts that are based on
 the Company&amp;#x2019;s credit rating. As of March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017, the Unitil
 subsidiaries had deposited $3.3&amp;#xA0;million, $2.6&amp;#xA0;million and
 $2.9&amp;#xA0;million, respectively to satisfy their &lt;font style="WHITE-SPACE: nowrap"&gt;ISO-NE&lt;/font&gt; obligations. In addition,
 Northern Utilities has cash margin deposits to satisfy requirements
 for its natural gas hedging program. There were no cash margin
 deposits at Northern Utilities as of March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:CashAndCashEquivalentsPolicyTextBlock>
  <dei:DocumentFiscalPeriodFocus contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_C4347E44-A62B-4126-B792-B871B6581011_1_4">Q1</dei:DocumentFiscalPeriodFocus>
  <dei:DocumentFiscalYearFocus contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_C4347E44-A62B-4126-B792-B871B6581011_1_3">2018</dei:DocumentFiscalYearFocus>
  <dei:DocumentType contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_C4347E44-A62B-4126-B792-B871B6581011_1_0">10-Q</dei:DocumentType>
  <us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" unitRef="pure" decimals="2" id="id_10140147_4579F044-7FC8-4AE8-892B-D9B21885A372_1_0">0.21</us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate>
  <dei:EntityCentralIndexKey contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_4FAD3C12-924D-4AD8-800D-62B375A3D9E0_1_2">0000755001</dei:EntityCentralIndexKey>
  <us-gaap:InventoryPolicyTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_9F527D2E-3BF9-41FA-B338-7E8CD23A7E14_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Gas Inventory&lt;/b&gt;
 &amp;#x2013; The Company uses the weighted average cost methodology to
 value natural gas inventory. The following table shows the
 components of Gas Inventory as of March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="80%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 89pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas
 Inventory ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Natural Gas&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Propane&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Liquefied Natural
 Gas&amp;#xA0;&amp;amp; Other&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Gas
 Inventory&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:InventoryPolicyTextBlock>
  <us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" unitRef="iso4217_USD" decimals="-5" id="id_10140147_E0F51C80-E4AF-456B-9C47-E92CF99F90FB_1_14">28400000</us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations>
  <us-gaap:ScheduleOfDebtInstrumentsTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_B400EDA4-367C-4D26-8AB1-BC70D82EF7CA_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Details on long-term debt
 at March&amp;#xA0;31, 2018, March&amp;#xA0;31, 2017 and December&amp;#xA0;31,
 2017 are shown below:&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="79%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;($
 millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Unitil
 Corporation:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.33% Senior Notes, Due
 May&amp;#xA0;1, 2022&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;20.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.70% Senior Notes, Due
 August&amp;#xA0;1, 2026&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;30.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;30.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;30.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Unitil Energy First
 Mortgage Bonds:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.24% Senior Secured Notes,
 Due March&amp;#xA0;2, 2020&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8.49% Senior Secured Notes,
 Due October&amp;#xA0;14, 2024&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.96% Senior Secured Notes,
 Due September&amp;#xA0;1, 2028&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;20.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8.00% Senior Secured Notes,
 Due May&amp;#xA0;1, 2031&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;15.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.32% Senior Secured Notes,
 Due September&amp;#xA0;15, 2036&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;15.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Fitchburg:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.75% Senior Notes, Due
 November&amp;#xA0;30, 2023&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.79% Senior Notes, Due
 October&amp;#xA0;15, 2025&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.52% Senior Notes, Due
 November&amp;#xA0;1, 2027&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.37% Senior Notes, Due
 January&amp;#xA0;15, 2029&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;12.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;12.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;12.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.90% Senior Notes, Due
 December&amp;#xA0;15, 2030&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;15.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.98% Senior Notes, Due
 June&amp;#xA0;1, 2031&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;14.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;14.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;14.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.32% Senior Notes, Due
 November&amp;#xA0;1, 2047&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;15.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Northern
 Utilities:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.95% Senior Notes, Due
 December&amp;#xA0;3, 2018&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.29% Senior Notes, Due
 March&amp;#xA0;2, 2020&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;16.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;25.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;25.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.52% Senior Notes, Due
 November&amp;#xA0;1, 2027&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;20.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.72% Senior Notes, Due
 December&amp;#xA0;3, 2038&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;50.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;50.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;50.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.42% Senior Notes, Due
 October&amp;#xA0;15, 2044&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;50.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;50.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;50.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.32% Senior Notes, Due
 November&amp;#xA0;1, 2047&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;30.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;30.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Granite
 State:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.15% Senior Notes, Due
 December&amp;#xA0;15, 2018&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.72% Senior Notes, Due
 November&amp;#xA0;1, 2027&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;15.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Unitil Realty
 Corp.:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8.00% Senior Secured Notes,
 Due Through August&amp;#xA0;1, 2017&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Long-Term
 Debt&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;396.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;336.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;409.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Unamortized Debt
 Issuance Costs&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Long-Term Debt, net
 of Unamortized Debt Issuance Costs&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;392.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;333.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;406.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Current
 Portion&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;29.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;30.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;29.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Long-term Debt, Less
 Current Portion&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;363.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;303.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;376.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:ScheduleOfDebtInstrumentsTextBlock>
  <us-gaap:ScheduleOfUtilityInventoryTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_BF5FABE9-2C1A-4435-9F4B-B6A660838F37_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company uses the
 weighted average cost methodology to value natural gas inventory.
 The following table shows the components of Gas Inventory as of
 March&amp;#xA0;31, 2018, March&amp;#xA0;31, 2017 and December&amp;#xA0;31,
 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="80%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 89pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas
 Inventory ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Natural Gas&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Propane&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Liquefied Natural
 Gas&amp;#xA0;&amp;amp; Other&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Gas
 Inventory&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:ScheduleOfUtilityInventoryTextBlock>
  <us-gaap:SignificantAccountingPoliciesTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_9D984E01-815B-49A7-AE64-65C227339603_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;NOTE 1 &amp;#x2013; SUMMARY
 OF SIGNIFICANT ACCOUNTING POLICIES&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Nature of Operations&lt;/b&gt;
 &amp;#x2013; Unitil Corporation (Unitil or the Company) is a public
 utility holding company. Unitil and its subsidiaries are subject to
 regulation as a holding company system by the Federal Energy
 Regulatory Commission (FERC) under the Energy Policy Act of 2005.
 The following companies are wholly-owned subsidiaries of Unitil:
 Unitil Energy Systems, Inc. (Unitil Energy), Fitchburg Gas and
 Electric Light Company (Fitchburg), Northern Utilities, Inc.
 (Northern Utilities), Granite State Gas Transmission, Inc. (Granite
 State), Unitil Power Corp. (Unitil Power), Unitil Realty Corp.
 (Unitil Realty), Unitil Service Corp. (Unitil Service) and its
 &lt;font style="WHITE-SPACE: nowrap"&gt;non-regulated&lt;/font&gt; business
 unit Unitil Resources, Inc. (Unitil Resources). Usource Inc. and
 Usource L.L.C. are subsidiaries of Unitil Resources.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company&amp;#x2019;s
 earnings are seasonal and are typically higher in the first and
 fourth quarters when customers use natural gas for heating
 purposes.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Unitil&amp;#x2019;s principal
 business is the local distribution of electricity in the
 southeastern seacoast and state capital regions of New Hampshire
 and the greater Fitchburg area of north central Massachusetts, and
 the local distribution of natural gas in southeastern New
 Hampshire, portions of southern and central Maine and in the
 greater Fitchburg area of north central Massachusetts. Unitil has
 three distribution utility subsidiaries, Unitil Energy, which
 operates in New Hampshire, Fitchburg, which operates in
 Massachusetts and Northern Utilities, which operates in New
 Hampshire and Maine (collectively referred to as the distribution
 utilities).&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Granite State is a natural
 gas transportation pipeline, operating 86 miles of underground gas
 transmission pipeline primarily located in Maine and New Hampshire.
 Granite State provides Northern Utilities with interconnection to
 three major natural gas pipelines and access to domestic natural
 gas supplies in the south and Canadian natural gas supplies in the
 north. Granite State derives its revenues principally from the
 transportation services provided to Northern Utilities and, to a
 lesser extent, third-party marketers.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;A fifth utility subsidiary,
 Unitil Power, formerly functioned as the full requirements
 wholesale power supply provider for Unitil Energy. In connection
 with the implementation of electric industry restructuring in New
 Hampshire, Unitil Power ceased being the wholesale supplier of
 Unitil Energy on May&amp;#xA0;1, 2003 and divested of its long-term
 power supply contracts through the sale of the entitlements to the
 electricity associated with various electric power supply contracts
 it had acquired to serve Unitil Energy&amp;#x2019;s
 customers.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Unitil also has three other
 wholly-owned subsidiaries: Unitil Service; Unitil Realty; and
 Unitil Resources. Unitil Service provides, at cost, a variety of
 administrative and professional services, including regulatory,
 financial, accounting, human resources, engineering, operations,
 technology, energy management and management services on a
 centralized basis to its affiliated Unitil companies. Unitil Realty
 owns and manages the Company&amp;#x2019;s corporate office in Hampton,
 New Hampshire and leases this facility to Unitil Service under a
 long-term lease arrangement. Unitil Resources is the
 Company&amp;#x2019;s wholly-owned &lt;font style="WHITE-SPACE: nowrap"&gt;non-regulated&lt;/font&gt; subsidiary. Usource,
 Inc. and Usource L.L.C. (collectively, Usource) are wholly-owned
 subsidiaries of Unitil Resources. Usource provides brokering and
 advisory services to large commercial and industrial customers in
 the northeastern United States.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Basis of Presentation
 &amp;#x2013;&lt;/b&gt; The accompanying unaudited consolidated financial
 statements of Unitil have been prepared in accordance with the
 instructions to Form &lt;font style="WHITE-SPACE: nowrap"&gt;10-Q&lt;/font&gt;
 and include all of the information and footnotes required by
 generally accepted accounting principles. In the opinion of
 management, all adjustments considered necessary for a fair
 presentation have been included. The results of operations for the
 three months ended March&amp;#xA0;31, 2018 are not necessarily
 indicative of results to be expected for the year ending
 December&amp;#xA0;31, 2018. For further information, please refer to
 Note 1 of Part II to the Consolidated Financial Statements &amp;#x2013;
 &amp;#x201C;Summary of Significant Accounting Policies&amp;#x201D; of the
 Company&amp;#x2019;s Form &lt;font style="WHITE-SPACE: nowrap"&gt;10-K&lt;/font&gt;
 for the year ended December&amp;#xA0;31, 2017, as filed with the
 Securities and Exchange Commission (SEC) on February&amp;#xA0;1, 2018,
 for a description of the Company&amp;#x2019;s Basis of
 Presentation.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Utility Revenue
 Recognition &amp;#x2013;&lt;/b&gt; Gas Operating Revenues and Electric
 Operating Revenues consist of billed and unbilled revenue and
 revenue from rate adjustment mechanisms. Billed and unbilled
 revenue includes delivery revenue and pass-through revenue,
 recognized according to tariffs approved by federal and state
 regulatory commissions which determine the amount of revenue the
 Company will record for these items. Revenue from rate adjustment
 mechanisms is accrued revenue, recognized in connection with rate
 adjustment mechanisms, and authorized by regulators for recognition
 in the current period for future cash recoveries from, or credits
 to, customers.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Billed and unbilled revenue
 is recorded when service is rendered or energy is delivered to
 customers. However, the determination of energy sales to individual
 customers is based on the reading of their meters, which occurs on
 a systematic basis throughout the month. At the end of each
 calendar month, amounts of energy delivered to customers since the
 date of the last meter reading are estimated and the corresponding
 unbilled revenues are calculated. These unbilled revenues are
 calculated each month based on estimated customer usage by class
 and applicable customer rates and are then reversed in the
 following month when billed to customers.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In the first quarter of
 2018, the Company adopted Accounting Standards Update (ASU)
 &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09,&lt;/font&gt; and its
 subsequent clarifications and amendments outlined in ASU
 &lt;font style="WHITE-SPACE: nowrap"&gt;2015-14,&lt;/font&gt; ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2016-08,&lt;/font&gt; ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2016-10&lt;/font&gt; and ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2017-13,&lt;/font&gt; on a modified retrospective
 basis, which requires application to contracts with customers
 effective January&amp;#xA0;1, 2018, with the cumulative impact on
 contracts not yet completed as of December&amp;#xA0;31, 2017 recognized
 as an adjustment to the opening balance of Retained Earnings on the
 Company&amp;#x2019;s Consolidated Balance Sheets. There was no
 cumulative effect of adoption to be recognized as an adjustment to
 the opening balance of Retained Earnings on the Company&amp;#x2019;s
 Consolidated Balance Sheets. The adoption of this guidance did not
 have a material impact on the Consolidated Financial Statements as
 of the adoption date or for the three months ended March&amp;#xA0;31,
 2018. A majority of the Company&amp;#x2019;s revenue from contracts with
 customers continues to be recognized on a monthly basis based on
 applicable tariffs and customer monthly consumption. Such revenue
 is recognized using the invoice practical expedient which allows an
 entity to recognize revenue in the amount that directly corresponds
 to the value transferred to the customer.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As discussed below, the
 Company plans to disclose billed and unbilled revenue separately
 from rate adjustment mechanism revenue in the Notes to the
 Consolidated Financial Statements for periods in 2018 going
 forward, and will also provide this disclosure for prior periods
 for informational purposes.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company&amp;#x2019;s billed
 and unbilled revenue meets the definition of &amp;#x201C;revenues from
 contracts with customers&amp;#x201D; as defined in ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09.&lt;/font&gt; Revenue recognized in
 connection with rate adjustment mechanisms is consistent with the
 definition of alternative revenue programs in Accounting Standards
 Codification (ASC) &lt;font style="WHITE-SPACE: nowrap"&gt;&lt;font style="WHITE-SPACE: nowrap"&gt;&lt;font style="WHITE-SPACE: nowrap"&gt;980-605-25-3,&lt;/font&gt;&lt;/font&gt;&lt;/font&gt; as the
 Company has the ability to adjust rates in the future as a result
 of past activities or completed events. ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt; requires the Company to
 disclose separately the amount of revenues from contracts with
 customers and alternative revenue program revenues.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In the following tables,
 revenue is classified by the types of goods/services rendered and
 market/customer type. The lower revenues reported in the first
 quarter of 2018 to account for the reduction in the corporate
 income tax rate under the Tax Cuts and Jobs Act of 2017 (TCJA) are
 shown separately in the table below for informational
 purposes.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="78%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&amp;#xA0;March&amp;#xA0;31,&amp;#xA0;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 171pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas and
 Electric Operating Revenues ($ millions):&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Electric&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Billed and Unbilled
 Revenue:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Residential&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;35.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;34.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;70.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;C&amp;amp;I&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;50.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;24.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;74.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Revenue Reductions &amp;#x2013;
 TCJA&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(1.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(0.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(2.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 7em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Billed and Unbilled
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;91.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;61.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;153.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Rate Adjustment Mechanism
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(4.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(4.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(8.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Gas and Electric
 Operating Revenues&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;87.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;57.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;144.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1pt"&gt;
 &lt;td height="16"&gt;&lt;/td&gt;
 &lt;td height="16" colspan="12"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&amp;#xA0;March&amp;#xA0;31,&amp;#xA0;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 171pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas and
 Electric Operating Revenues ($ millions):&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Electric&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Billed and Unbilled
 Revenue:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Residential&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;30.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;27.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;58.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;C&amp;amp;I&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;42.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;19.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;61.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 7em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Billed and Unbilled
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;78.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;49.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;127.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Rate Adjustment Mechanism
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(4.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(3.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Gas and Electric
 Operating Revenues&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;74.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;49.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;124.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Fitchburg is subject to
 revenue decoupling. Revenue decoupling is the term given to the
 elimination of the dependency of a utility&amp;#x2019;s distribution
 revenue on the volume of electricity or natural gas sales. The
 difference between distribution revenue amounts billed to customers
 and the targeted revenue decoupling amounts is recorded as an
 increase or a decrease in Accrued Revenue, which forms the basis
 for resetting rates for future cash recoveries from, or credits to,
 customers. These revenue decoupling targets may be adjusted as a
 result of rate cases that the Company files with the MDPU. The
 Company estimates that revenue decoupling applies to approximately
 27% and 11% of Unitil&amp;#x2019;s total annual electric and natural gas
 sales volumes, respectively.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Other Operating Revenue
 &amp;#x2013; &lt;font style="WHITE-SPACE: nowrap"&gt;Non-regulated&lt;/font&gt;
 &amp;#x2013;&lt;/b&gt; Usource, Unitil&amp;#x2019;s &lt;font style="WHITE-SPACE: nowrap"&gt;non-regulated&lt;/font&gt; subsidiary, conducts its
 business activities as a broker of competitive energy services.
 Usource does not take title to the electric and gas commodities
 which are the subject of the brokerage contracts. The Company
 records energy brokering revenues based upon the amount of
 electricity and gas delivered to customers through the end of the
 accounting period. Usource partners with certain entities to
 facilitate these brokerage services and pays these entities a fee
 under revenue sharing agreements.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As discussed above, the
 Company adopted ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt; in the first quarter of 2018.
 There was no cumulative effect of adoption to be recognized as an
 adjustment to the opening balance of Retained Earnings on the
 Company&amp;#x2019;s Consolidated Balance Sheets. ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt; requires that payments made by
 Usource to third parties (&amp;#x201C;Channel Partners&amp;#x201D;) for
 revenue sharing agreements are recognized net, as a reduction from
 revenue, where those payments were previously recognized gross as
 an operating expense. Therefore, beginning with the three months
 ended March&amp;#xA0;31, 2018 and going forward, payments made by
 Usource to Channel Partners for revenue sharing agreements are
 reported as &amp;#x201C;Other&amp;#x201D; in the &amp;#x201C;Operating
 Revenues&amp;#x201D; section of the Consolidated Statements of Earnings,
 along with Usource&amp;#x2019;s revenues. Prior to the adoption of ASU
 &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09,&lt;/font&gt; payments by
 Usource to third parties for revenue sharing agreements are
 included as &amp;#x201C;Operation and Maintenance&amp;#x201D; in the
 &amp;#x201C;Operating Expenses&amp;#x201D; section of the Consolidated
 Statements of Earnings. Those Channel Partner payments were
 $0.3&amp;#xA0;million each of the first quarters of 2018 and
 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;If ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt; had been adopted retroactively
 for the three months ended March&amp;#xA0;31, 2017, the result would
 have been corresponding reductions of $0.3&amp;#xA0;million in both
 &amp;#x201C;Other&amp;#x201D; in in the &amp;#x201C;Operating Revenues&amp;#x201D;
 section of the Consolidated Statements of Earnings and
 &amp;#x201C;Operation and Maintenance&amp;#x201D; in the &amp;#x201C;Operating
 Expenses&amp;#x201D; section of the Company&amp;#x2019;s Consolidated
 Statements of Earnings as shown in the tables below.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="72%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="11%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="11%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&amp;#xA0;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;As
 Reported&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" nowrap="nowrap" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;If ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt;&lt;br /&gt;
 Had Been in&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Effect&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 134pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Other
 Operating Revenues ($ millions):&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Usource Contract
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Revenue Sharing
 Payments&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Other Operating
 Revenues&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1pt"&gt;
 &lt;td height="16"&gt;&lt;/td&gt;
 &lt;td height="16" colspan="8"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&amp;#xA0;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;As
 Reported&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;If ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt;&lt;br /&gt;
 Had Been in&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Effect&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 169pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Operation
 and Maintenance Expense ($ millions):&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Operation and Maintenance
 Expense&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;17.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Retirement Benefit Costs
 &amp;#x2013;&lt;/b&gt; The Company sponsors the Unitil Corporation Retirement
 Plan (Pension Plan), the Unitil Employee Health and Welfare
 Benefits Plan (PBOP Plan) and the Unitil Corporation Supplemental
 Executive Retirement Plan (SERP).The net periodic benefit costs
 associated with these benefit plans consist of service cost and
 other components (See Note 9 to the Consolidated Financial
 Statements). In the first quarter of 2018, the Company adopted ASU
 &lt;font style="WHITE-SPACE: nowrap"&gt;No.&amp;#xA0;2017-07,&lt;/font&gt;
 &amp;#x201C;Compensation &amp;#x2013; Retirement Benefits (Topic 715) which
 amends the existing guidance relating to the presentation of net
 periodic pension cost and net periodic other post-retirement
 benefit costs. On a retrospective basis, the amendment requires an
 employer to separate the service cost component from the other
 components of net benefit cost and provides explicit guidance on
 how to present the service cost component and other components in
 the income statement.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Accordingly, for all
 periods presented in the Consolidated Financial Statements in this
 Form &lt;font style="WHITE-SPACE: nowrap"&gt;10-Q&lt;/font&gt; for the quarter
 ended March&amp;#xA0;31, 2018, the service cost component of the
 Company&amp;#x2019;s net periodic benefit costs is reported in
 &amp;#x201C;Operations and Maintenance&amp;#x201D; in the &amp;#x201C;Operating
 Expenses&amp;#x201D; section of the Consolidated Statements of Earnings
 while the other components of net periodic benefit costs are
 reported in the &amp;#x201C;Other Expense (Income), net&amp;#x201D; section
 of the Consolidated Statements of Earnings. Prior to adoption, the
 Company reported all components of its net periodic benefit costs
 in &amp;#x201C;Operations and Maintenance&amp;#x201D; in the &amp;#x201C;Operating
 Expenses&amp;#x201D; section of the Consolidated Statements of Earnings.
 The change in presentation for the quarter ended March&amp;#xA0;31,
 2018 resulted in a reduction of &amp;#x201C;Operations and
 Maintenance&amp;#x201D; and an increase in &amp;#x201C;Other Expense
 (Income), net&amp;#x201D; on the Consolidated Statements of Earnings for
 the prior period. There are $1.5&amp;#xA0;million and $1.6&amp;#xA0;million
 of &lt;font style="WHITE-SPACE: nowrap"&gt;non-service&lt;/font&gt; cost net
 periodic benefit costs reported in &amp;#x201C;Other Expense (Income),
 net for the three months ended March&amp;#xA0;31, 2018 and
 March&amp;#xA0;31, 2017, respectively, net of amounts deferred as
 regulatory assets for future recovery.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Income Taxes &amp;#x2013;&lt;/b&gt;
 The Company is subject to Federal and State income taxes as well as
 various other business taxes. This process involves estimating the
 Company&amp;#x2019;s current tax liabilities as well as assessing
 temporary and permanent differences resulting from the timing of
 the deductions of expenses and recognition of taxable income for
 tax and book accounting purposes. These temporary differences
 result in deferred tax assets and liabilities, which are included
 in the Company&amp;#x2019;s Consolidated Balance Sheets. The Company
 accounts for income tax assets, liabilities and expenses in
 accordance with the FASB Codification guidance on Income Taxes. The
 Company classifies penalty and interest expense related to income
 tax liabilities as income tax expense and interest expense,
 respectively, in the Consolidated Statements of
 Earnings.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Provisions for income taxes
 are calculated in each of the jurisdictions in which the Company
 operates for each period for which a statement of earnings is
 presented. The Company accounts for income taxes in accordance with
 the FASB Codification guidance on Income Taxes, which requires an
 asset and liability approach for the financial accounting and
 reporting of income taxes. Significant judgments and estimates are
 required in determining the current and deferred tax assets and
 liabilities. The Company&amp;#x2019;s current and deferred tax assets
 and liabilities reflect its best assessment of estimated future
 taxes to be paid. In accordance with the FASB Codification, the
 Company periodically assesses the realization of its deferred tax
 assets and liabilities and adjusts the income tax provision, the
 current tax liability and deferred taxes in the period in which the
 facts and circumstances which gave rise to the revision become
 known.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Cash and Cash
 Equivalents &amp;#x2013;&lt;/b&gt; Cash and Cash Equivalents includes all cash
 and cash equivalents to which the Company has legal title. Cash
 equivalents include short-term investments with original maturities
 of three months or less and interest bearing deposits. The
 Company&amp;#x2019;s cash and cash equivalents are held at financial
 institutions and at times may exceed federally insured limits. The
 Company has not experienced any losses in such accounts. Under the
 Independent System Operator&amp;#x2014;New England &lt;font style="WHITE-SPACE: nowrap"&gt;(ISO-NE)&lt;/font&gt; Financial Assurance Policy
 (Policy), Unitil&amp;#x2019;s subsidiaries Unitil Energy, Fitchburg and
 Unitil Power are required to provide assurance of their ability to
 satisfy their obligations to &lt;font style="WHITE-SPACE: nowrap"&gt;ISO-NE.&lt;/font&gt; Under this Policy,
 Unitil&amp;#x2019;s subsidiaries provide cash deposits covering
 approximately &lt;font style="WHITE-SPACE: nowrap"&gt;2-1/2&lt;/font&gt; months
 of outstanding obligations, less credit amounts that are based on
 the Company&amp;#x2019;s credit rating. As of March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017, the Unitil
 subsidiaries had deposited $3.3&amp;#xA0;million, $2.6&amp;#xA0;million and
 $2.9&amp;#xA0;million, respectively to satisfy their &lt;font style="WHITE-SPACE: nowrap"&gt;ISO-NE&lt;/font&gt; obligations. In addition,
 Northern Utilities has cash margin deposits to satisfy requirements
 for its natural gas hedging program. There were no cash margin
 deposits at Northern Utilities as of March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Allowance for Doubtful
 Accounts &amp;#x2013;&lt;/b&gt; The Company recognizes a provision for
 doubtful accounts each month based upon the Company&amp;#x2019;s
 experience in collecting electric and gas utility service accounts
 receivable in prior years. At the end of each month, an analysis of
 the delinquent receivables is performed which takes into account an
 assumption about the cash recovery of delinquent receivables. The
 analysis also calculates the amount of &lt;font style="WHITE-SPACE: nowrap"&gt;written-off&lt;/font&gt; receivables that are
 recoverable through regulatory rate reconciling mechanisms. The
 Company&amp;#x2019;s distribution utilities are authorized by regulators
 to recover the costs of their energy commodity portion of bad debts
 through rate mechanisms. Also, the electric and gas divisions of
 Fitchburg are authorized to recover through rates past due amounts
 associated with hardship accounts that are protected from
 &lt;font style="WHITE-SPACE: nowrap"&gt;shut-off.&lt;/font&gt; Evaluating the
 adequacy of the Allowance for Doubtful Accounts requires judgment
 about the assumptions used in the analysis. It has been the
 Company&amp;#x2019;s experience that the assumptions it has used in
 evaluating the adequacy of the Allowance for Doubtful Accounts have
 proven to be reasonably accurate.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Allowance for Doubtful
 Accounts as of March&amp;#xA0;31, 2018, March&amp;#xA0;31, 2017 and
 December&amp;#xA0;31, 2017, which are included in Accounts Receivable,
 net on the accompanying unaudited consolidated balance sheets, was
 as follows:&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="82%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;($
 millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="10"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Allowance for Doubtful
 Accounts&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Accrued Revenue&lt;/b&gt;
 &amp;#x2013; Accrued Revenue includes the current portion of Regulatory
 Assets and unbilled revenues. The following table shows the
 components of Accrued Revenue as of March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="82%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 100pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Accrued
 Revenue ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Regulatory Assets &amp;#x2013;
 Current&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;34.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;32.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;39.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Unbilled
 Revenues&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;13.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Accrued
 Revenue&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;45.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;41.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;53.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Exchange Gas
 Receivable&lt;/b&gt; &amp;#x2013; Northern Utilities and Fitchburg have gas
 exchange and storage agreements whereby natural gas purchases
 during the months of April through October are delivered to a third
 party. The third party delivers natural gas back to the Company
 during the months of November through March. The exchange and
 storage gas volumes are recorded at weighted average cost. The
 following table shows the components of Exchange Gas Receivable as
 of March&amp;#xA0;31, 2018, March&amp;#xA0;31, 2017 and December&amp;#xA0;31,
 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="81%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 127pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Exchange Gas
 Receivable ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Northern
 Utilities&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Fitchburg&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Exchange Gas
 Receivable&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Gas Inventory&lt;/b&gt;
 &amp;#x2013; The Company uses the weighted average cost methodology to
 value natural gas inventory. The following table shows the
 components of Gas Inventory as of March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="80%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 89pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas
 Inventory ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Natural Gas&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Propane&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Liquefied Natural
 Gas&amp;#xA0;&amp;amp; Other&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Gas
 Inventory&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Utility Plant
 &amp;#x2013;&lt;/b&gt; The cost of additions to Utility Plant and the cost of
 renewals and betterments are capitalized. Cost consists of labor,
 materials, services and certain indirect construction costs,
 including an allowance for funds used during construction (AFUDC).
 The costs of current repairs and minor replacements are charged to
 appropriate operating expense accounts. The original cost of
 utility plant retired or otherwise disposed of is charged to the
 accumulated provision for depreciation. The Company includes in its
 mass asset depreciation rates, which are periodically reviewed as
 part of its ratemaking proceedings, cost of removal amounts to
 provide for future negative salvage value. At March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017, the Company
 estimates that the cost of removal amounts, which are recorded on
 the Consolidated Balance Sheets in Cost of Removal Obligations are
 $86.6&amp;#xA0;million, $79.7&amp;#xA0;million, and $84.3&amp;#xA0;million,
 respectively.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Regulatory Accounting
 &amp;#x2013;&lt;/b&gt; The Company&amp;#x2019;s principal business is the
 distribution of electricity and natural gas by the three
 distribution utilities: Unitil Energy, Fitchburg and Northern
 Utilities. Unitil Energy and Fitchburg are subject to regulation by
 the FERC. Fitchburg is also regulated by the Massachusetts
 Department of Public Utilities (MDPU), Unitil Energy is regulated
 by the New Hampshire Public Utilities Commission (NHPUC) and
 Northern Utilities is regulated by the Maine Public Utilities
 Commission (MPUC) and NHPUC. Granite State, the Company&amp;#x2019;s
 natural gas transmission pipeline, is regulated by the FERC.
 Accordingly, the Company uses the Regulated Operations guidance as
 set forth in the FASB Codification. The Company has recorded
 Regulatory Assets and Regulatory Liabilities which will be
 recovered from customers, or applied for customer benefit, in
 accordance with rate provisions approved by the applicable public
 utility regulatory commission.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="79%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 181pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Regulatory
 Assets consist of the following ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Retirement
 Benefits&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;85.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;75.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;84.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Energy Supply&amp;#xA0;&amp;amp;
 Other Rate Adjustment Mechanisms&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;31.9&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;27.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;36.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Deferred Storm
 Charges&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;8.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Environmental&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;9.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income Taxes&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;6.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;5.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Regulatory
 Assets&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;145.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;135.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;149.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Current Portion of
 Regulatory Assets&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="VERTICAL-ALIGN: baseline; POSITION: relative; BOTTOM: 0.8ex"&gt;(1)&lt;/sup&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;34.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;32.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;39.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Regulatory Assets
 &amp;#x2013; noncurrent&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;111.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;103.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;109.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 6px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" border="0"&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="VERTICAL-ALIGN: baseline; POSITION: relative; BOTTOM: 0.8ex"&gt;(1)&lt;/sup&gt;&lt;/font&gt;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="top" align="left"&gt;
 &lt;p align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Reflects amounts included in Accrued Revenue, discussed above,
 on the Company&amp;#x2019;s Consolidated Balance Sheets.&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="80%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 194pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Regulatory
 Liabilities consist of the following ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Rate Adjustment
 Mechanisms&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Gas Pipeline Refund (Note
 6)&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income Taxes (Note
 8)&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;49.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;48.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Regulatory
 Liabilities&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;60.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;13.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;58.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Current Portion of
 Regulatory Liabilities&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.9&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;12.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Regulatory Liabilities
 &amp;#x2013; noncurrent&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;49.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;48.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Generally, the Company
 receives a return on investment on its regulated assets for which a
 cash outflow has been made. Included in Regulatory Assets as of
 March&amp;#xA0;31, 2018 are $0.5&amp;#xA0;million of deferred storm charges
 to be recovered over the year and $6.5&amp;#xA0;million of
 environmental costs, rate case costs and other expenditures to be
 recovered over varying periods in the next seven years. Regulators
 have authorized recovery of these expenditures, but without a
 return. Regulatory commissions can reach different conclusions
 about the recovery of costs, which can have a material impact on
 the Company&amp;#x2019;s Consolidated Financial Statements. The Company
 believes it is probable that its regulated distribution and
 transmission utilities will recover their investments in long-lived
 assets, including regulatory assets. If the Company, or a portion
 of its assets or operations, were to cease meeting the criteria for
 application of these accounting rules, accounting standards for
 businesses in general would become applicable and immediate
 recognition of any previously deferred costs, or a portion of
 deferred costs, would be required in the year in which the criteria
 are no longer met, if such deferred costs were not recoverable in
 the portion of the business that continues to meet the criteria for
 application of the FASB Codification topic on Regulated Operations.
 If unable to continue to apply the FASB Codification provisions for
 Regulated Operations, the Company would be required to apply the
 provisions for the Discontinuation of Rate-Regulated Accounting
 included in the FASB Codification. In the Company&amp;#x2019;s opinion,
 its regulated operations will be subject to the FASB Codification
 provisions for Regulated Operations for the foreseeable
 future.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Derivatives &amp;#x2013;&lt;/b&gt;
 The Company&amp;#x2019;s regulated energy subsidiaries enter into energy
 supply contracts to serve their electric and gas customers. The
 Company follows a procedure for determining whether each contract
 qualifies as a derivative instrument under the guidance provided by
 the FASB Codification on Derivatives and Hedging. For each
 contract, the Company reviews and documents the key terms of the
 contract. Based on those terms and any additional relevant
 components of the contract, the Company determines and documents
 whether the contract qualifies as a derivative instrument as
 defined in the FASB Codification. The Company has determined that
 none of its energy supply contracts, other than the regulatory
 approved hedging program, described below, qualifies as a
 derivative instrument under the guidance set forth in the FASB
 Codification.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company has managed a
 regulatory approved hedging program for Northern Utilities, which
 is designed to fix or cap a portion of its gas supply costs for the
 coming years of service through the purchase of European call
 option contracts. Any gains or losses resulting from these option
 contracts are passed through to customers directly through Northern
 Utilities&amp;#x2019; Cost of Gas Adjustment Clause. The fair value of
 these derivatives is determined using Level&amp;#xA0;2 inputs
 (valuations based on quoted prices in markets that are not active
 or for which all significant inputs are observable, either directly
 or indirectly), specifically based on the NYMEX closing prices for
 outstanding contracts as of the balance sheet date. As a result of
 the ratemaking process, the Company records gains and losses
 resulting from the change in fair value of the derivatives as
 regulatory liabilities or assets, then reclassifies these gains or
 losses into Cost of Gas Sales when the gains and losses are passed
 through to customers through the Cost of Gas Adjustment Clause.
 Currently, there are no active transactions and the Company has
 proposed to regulators to discontinue the program. This matter
 remains pending.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As of March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017 the Company had
 zero, 1.2&amp;#xA0;billion and 0.6&amp;#xA0;billion cubic feet (BCF),
 respectively, outstanding in natural gas futures and options
 contracts under its hedging program.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As of March&amp;#xA0;31, 2018
 and March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017, the
 Company&amp;#x2019;s derivatives that are not designated as hedging
 instruments under FASB ASC &lt;font style="WHITE-SPACE: nowrap"&gt;815-20&lt;/font&gt; have a fair value of $0,
 $0.3&amp;#xA0;million and less than $0.1&amp;#xA0;million,
 respectively.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Investments in
 Marketable Securities&lt;/b&gt; &amp;#x2013; The Company has a trust through
 which it invests in a variety of equity and fixed income mutual
 funds. These funds are intended to satisfy obligations under the
 Company&amp;#x2019;s Supplemental Executive Retirement Plan
 (&amp;#x201C;SERP&amp;#x201D;) (See further discussion of the SERP in Note
 9.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;At March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017, the fair value of
 the Company&amp;#x2019;s investments in these trading securities, which
 are recorded on the Consolidated Balance Sheets in Other Assets,
 were $5.1&amp;#xA0;million, $3.3 and $3.6&amp;#xA0;million, respectively,
 as shown in the table below. These investments are valued based on
 quoted prices from active markets and are categorized in
 Level&amp;#xA0;1 as they are actively traded and no valuation
 adjustments have been applied. Changes in the fair value of these
 investments are recorded in Other Expense, net.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="82%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 162pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Fair Value
 of Marketable Securities ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Equity Funds&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.9&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Fixed Income
 Funds&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Cash and
 Equivalents&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Marketable
 Securities&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;5.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Energy Supply
 Obligations &amp;#x2013;&lt;/b&gt; The following discussion and table
 summarize the nature and amounts of the items recorded as Energy
 Supply Obligations (current portion) and Other Noncurrent
 Liabilities (noncurrent portion) on the Company&amp;#x2019;s
 Consolidated Balance Sheets.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="80%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 132pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Energy
 Supply Obligations ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Current:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Exchange Gas
 Obligation&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Renewable Energy Portfolio
 Standards&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Power Supply Contract
 Divestitures&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Energy Supply
 Obligations &amp;#x2013; Current&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Long-Term:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Power Supply Contract
 Divestitures&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Energy Supply
 Obligations&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;8.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Exchange Gas Obligation
 &amp;#x2013; As discussed above, Northern Utilities enters into gas
 exchange agreements under which Northern Utilities releases certain
 natural gas pipeline and storage assets, resells the natural gas
 storage inventory to an asset manager and subsequently repurchases
 the inventory over the course of the natural gas heating season at
 the same price at which it sold the natural gas inventory to the
 asset manager. The gas inventory related to these agreements is
 recorded in Exchange Gas Receivable on the Company&amp;#x2019;s
 Consolidated Balance Sheets while the corresponding obligations are
 recorded in Energy Supply Obligations.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Renewable Energy Portfolio
 Standards &amp;#x2013; Renewable Energy Portfolio Standards (RPS)
 require retail electricity suppliers, including public utilities,
 to demonstrate that required percentages of their sales are met
 with power generated from certain types of resources or
 technologies. Compliance is demonstrated by purchasing and retiring
 Renewable Energy Certificates (REC) generated by facilities
 approved by the state as qualifying for REC treatment. Unitil
 Energy and Fitchburg purchase RECs in compliance with RPS
 legislation in New Hampshire and Massachusetts for supply provided
 to default service customers. RPS compliance costs are a supply
 cost that is recovered in customer default service rates. Unitil
 Energy and Fitchburg collect RPS compliance costs from customers
 throughout the year and demonstrate compliance for each calendar
 year on the following July 1. Due to timing differences between
 collection of revenue from customers and payment of REC costs to
 suppliers, Unitil Energy and Fitchburg typically maintain accrued
 revenue for RPS compliance which is recorded in Accrued Revenue
 with a corresponding liability in Energy Supply Obligations on the
 Company&amp;#x2019;s Consolidated Balance Sheets.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Fitchburg has entered into
 long-term renewable contracts for electric energy and/or renewable
 energy credits pursuant to Massachusetts legislation, specifically,
 the Act Relative to Green Communities of 2008 and the Act Relative
 to Competitively Priced Electricity (2012)&amp;#xA0;in the
 Commonwealth, and the MDPU&amp;#x2019;s regulations implementing the
 legislation. The generating facilities associated with three of
 these contracts have been constructed and are operating. A recent
 round of long-term renewable energy procurements was conducted
 during 2016 and several contracts were finalized and submitted to
 MDPU for approval in 2017. These approvals remain pending.
 Additional procurements are expected in compliance with the Act to
 Promote Energy Diversity (2016). Fitchburg recovers the costs
 associated with long-term renewable contracts on a fully
 reconciling basis through a MDPU-approved cost recovery
 mechanism.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Power Supply Contract
 Divestitures &amp;#x2013; Unitil Energy&amp;#x2019;s and Fitchburg&amp;#x2019;s
 customers are entitled to purchase their electric or natural gas
 supplies from third-party suppliers. In connection with the
 implementation of retail choice, Unitil Power, which formerly
 functioned as the wholesale power supply provider for Unitil
 Energy, and Fitchburg divested their long-term power supply
 contracts through the sale of the entitlements to the electricity
 sold under those contracts. Unitil Energy and Fitchburg recover in
 their rates all the costs associated with the divestiture of their
 power supply portfolios and have secured regulatory approval from
 the NHPUC and MDPU, respectively, for the recovery of power
 supply-related stranded costs. The obligations related to these
 divestitures are recorded in Energy Supply Obligations (current
 portion) and Other Noncurrent Liabilities (noncurrent portion) on
 the Company&amp;#x2019;s Consolidated Balance Sheets with corresponding
 regulatory assets recorded in Accrued Revenue (current portion) and
 Regulatory Assets (noncurrent portion).&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Recently Issued
 Pronouncements&lt;/b&gt; &amp;#x2013; In March 2017, the FASB issued ASU
 &lt;font style="WHITE-SPACE: nowrap"&gt;No.&amp;#xA0;2017-07,&lt;/font&gt;
 &amp;#x201C;Compensation &amp;#x2013; Retirement Benefits (Topic 715) which
 amends the existing guidance relating to the presentation of net
 periodic pension cost and net periodic other post-retirement
 benefit costs. On a retrospective basis, the amendment requires an
 employer to separate the service cost component from the other
 components of net benefit cost and provides explicit guidance on
 how to present the service cost component and other components in
 the income statement. In addition, on a prospective basis, the ASU
 limits the component of net benefit cost eligible to be capitalized
 to service costs. The ASU became effective for the Company on
 January&amp;#xA0;1, 2018. The change in capitalization of retirement
 benefits did not have a material impact on the Company&amp;#x2019;s
 Consolidated Financial Statements.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 6px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In May 2014, the FASB
 issued ASU &lt;font style="WHITE-SPACE: nowrap"&gt;No.&amp;#xA0;2014-09,&lt;/font&gt; &amp;#x201C;Revenue from
 Contracts with Customers (Topic 606)&amp;#x201D;, which amends existing
 revenue recognition guidance, effective January&amp;#xA0;1, 2018. The
 objective of the new standard is to provide a single, comprehensive
 revenue recognition model for all contracts with customers to
 improve comparability across entities, industries, jurisdictions,
 and capital markets and to provide more useful information to users
 of financial statements through improved and expanded disclosure
 requirements.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The majority of the
 Company&amp;#x2019;s revenue, including energy provided to customers, is
 from tariff offerings that provide natural gas or electricity
 without a defined contractual term. For such arrangements, the
 Company generally expects that the revenue from contracts with
 these customers will continue to be equivalent to the electricity
 or natural gas supplied and billed in that period (including
 unbilled revenues) and the adoption of the new guidance will not
 result in a significant shift in the timing of revenue recognition
 for such sales.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company used the
 modified retrospective method when adopting the new standard on
 January&amp;#xA0;1, 2018. The new guidance did not have a material
 impact to the Consolidated Financial Statements. (See
 &amp;#x201C;Utility Revenue Recognition&amp;#x201D; and &amp;#x201C;Other
 Operating Revenue &amp;#x2013; &lt;font style="WHITE-SPACE: nowrap"&gt;Non-regulated&amp;#x201D;&lt;/font&gt;
 above.)&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In February 2016, the FASB
 issued ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2016-02,&lt;/font&gt;
 Leases, Topic 842, which amends the existing guidance relating to
 the definition of a lease, recognition of lease assets and lease
 liabilities on the balance sheet, and the disclosure of key
 information about leasing arrangements.&amp;#xA0;In November 2017, the
 FASB tentatively decided to amend the new leasing guidance such
 that entities may elect not to restate their comparative periods in
 the period of adoption. Under the new standard, all lessees must
 recognize an asset and liability on the balance sheet. Operating
 leases were previously not recognized on the balance
 sheet.&amp;#xA0;The ASU will be effective for the Company on
 January&amp;#xA0;1, 2019, with early adoption permitted. The Company
 plans to adopt this guidance in the first quarter of 2019.&amp;#xA0;The
 Company expects this ASU to increase lease assets and lease
 liabilities on the Consolidated Balance Sheets and does not expect
 the guidance will have a material impact on the Consolidated
 Statements of Income, Statements of Cash Flows and lease
 disclosures.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In January 2016, the FASB
 issued Accounting Standards Update (ASU) &lt;font style="WHITE-SPACE: nowrap"&gt;2016-01&lt;/font&gt; which addresses certain
 aspects of recognition, measurement, presentation and disclosure of
 financial instruments. A financial instrument is defined as cash,
 evidence of ownership interest in a company or other entity, or a
 contract that both: (i)&amp;#xA0;imposes on one entity a contractual
 obligation either to deliver cash or another financial instrument
 to a second entity or to exchange other financial instruments on
 potentially unfavorable terms with the second entity and
 (ii)&amp;#xA0;conveys to that second entity a contractual right either
 to receive cash or another financial instruments from the first
 entity or to exchange other financial instruments on potentially
 favorable terms with the first entity. The ASU became effective for
 the Company on January&amp;#xA0;1, 2018 and it did not have a material
 impact on the Company&amp;#x2019;s Consolidated Financial
 Statements.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other than the
 pronouncements discussed above, there are no recently issued
 pronouncements that the Company has not already adopted or that
 have a material impact on the Company.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Subsequent Events&lt;/b&gt;
 &amp;#x2013; The Company evaluates all events or transactions through
 the date of the related filing. During the period through the date
 of this filing, the Company did not have any material subsequent
 events that would result in adjustment to or disclosure in its
 Consolidated Financial Statements.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:SignificantAccountingPoliciesTextBlock>
  <us-gaap:SupplyCommitmentTableTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_93D2AB0C-C656-4D14-A79C-29B84CE59C9A_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following discussion
 and table summarize the nature and amounts of the items recorded as
 Energy Supply Obligations (current portion) and Other Noncurrent
 Liabilities (noncurrent portion) on the Company&amp;#x2019;s
 Consolidated Balance Sheets.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="80%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 132pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Energy
 Supply Obligations ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Current:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Exchange Gas
 Obligation&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Renewable Energy Portfolio
 Standards&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Power Supply Contract
 Divestitures&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Energy Supply
 Obligations &amp;#x2013; Current&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Long-Term:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Power Supply Contract
 Divestitures&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Energy Supply
 Obligations&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;8.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
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 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="92%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="28%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="18%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="18%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="18%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="center"&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Declaration&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 1px; WIDTH: 39pt; BORDER-BOTTOM: #000000 1px solid; MARGIN-TOP: 0px; DISPLAY: inline" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Date&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
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 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
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 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top" align="center"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;04/25/18&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;05/29/18&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;05/15/18&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$0.365&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top" align="center"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;01/30/18&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;02/28/18&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;02/14/18&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$0.365&lt;/font&gt;&lt;/td&gt;
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 &lt;td height="8"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="2"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="2"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="2"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top" align="center"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10/25/17&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;11/29/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;11/15/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
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 &lt;td valign="top" align="center"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;07/26/17&lt;/font&gt;&lt;/p&gt;
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 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
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 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;08/15/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
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 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top" align="center"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;04/26/17&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;05/30/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;05/16/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$0.360&lt;/font&gt;&lt;/td&gt;
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 &lt;td valign="top" align="center"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;01/25/17&lt;/font&gt;&lt;/p&gt;
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 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;02/28/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;02/14/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$0.360&lt;/font&gt;&lt;/td&gt;
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  <us-gaap:IncomeTaxDisclosureTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_4574EFA3-2615-496A-ABBC-A807962B2F4B_1_0">&lt;div&gt;
 &lt;p style="margin-top:18px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;NOTE 8: INCOME
 TAXES&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:6px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;In December 2017, the Tax
 Cuts and Jobs Act (TCJA), which included a reduction to the
 corporate federal income tax rate to 21% effective January 1, 2018,
 was signed into law. In accordance with GAAP Accounting Standard
 740, the Company revalued its Accumulated Deferred Income Taxes
 (ADIT) at the new 21% tax rate at which the ADIT will be reversed
 in future periods. The Company recorded reasonable estimates to
 reflect the impacts of the Tax Act and recorded a net Regulatory
 Liability in the amount of $48.9 million at December 31, 2017 as a
 result of the ADIT revaluation.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;On March&amp;#xA0;15, 2018; FERC
 issued its Notice of Proposed Rulemaking in Docket
 No.&amp;#xA0;RM18-11-000 in which FERC provided specific guidance on
 the flow back of excess ADIT: &lt;i&gt;The amount of the reduction to
 ADIT that was collected from customers but is no longer payable to
 the IRS is excess ADIT and should be flowed back to ratepayers
 under general ratemaking principles.&lt;/i&gt; Subject to regulatory
 approval, the Company expects to flow back to customers a net
 $47.1&amp;#xA0;million of the excess ADIT created as a result of the
 lowering of the statutory tax rate by the TCJA.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;Based on communications
 received by the Company from its state regulators in rate cases and
 other regulatory proceedings in the first quarter of 2018 and as
 prescribed in the TCJA, the recent FERC guidance noted above and
 IRS normalization rules; the benefit of these excess ADIT amounts
 will be subject to flow back to customers in future utility rates
 according to the Average Rate Assumption Method (ARAM). ARAM
 reconciles excess ADIT at the reversal rate of the underlying
 book/tax temporary timing differences. The Company estimates the
 ARAM flow back period to be between fifteen and twenty years. The
 Company&amp;#x2019;s regulators and the IRS are each expected to issue
 guidance in future periods that will determine the final
 disposition of the re-measurement of regulatory deferred tax
 balances. At this time, the Company has applied a reasonable
 interpretation of the TCJA and a reasonable estimate of the
 regulatory resolution. Future clarification of the TCJA and
 regulatory decisions may change the amounts estimated.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;In addition to the excess
 $47.1 million ADIT amounts the Company expects to flow back to
 customers in future utility rates, as noted above, there was $1.8
 million of excess ADIT at December 31, 2017, which had not been
 previously included in customers&amp;#x2019; utility rates. During 2018,
 the Company determined that since this excess ADIT had not been
 previously collected from utility customers; it would, therefore,
 not be subject to flow back to customers in future rates. The
 Company will recognize a nonrecurring benefit in its tax provision
 as the underlying book/tax temporary differences reverse in the
 current and future periods.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="font-size:1px;margin-top:12px;margin-bottom:0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="margin-top:0px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;The Company filed its tax
 returns for the year ended December&amp;#xA0;31, 2016 with the Internal
 Revenue Service in September 2017 and generated additional federal
 net operating loss carryforward (NOLC) assets principally due to
 current tax repair deductions, tax depreciation and research and
 development deductions. In 2016, the Company recorded a benefit of
 approximately $0.7&amp;#xA0;million for New Hampshire business
 enterprise tax credits utilized in filing the Company&amp;#x2019;s 2015
 tax returns. For the year ended December&amp;#xA0;31, 2017, the Company
 decreased its federal NOLC $1.1&amp;#xA0;million in the calculation of
 its provisions for income taxes for the period and revalued the
 NOLC by $10.1&amp;#xA0;million for federal rate of 21% enacted in the
 TCJA.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;As of December&amp;#xA0;31,
 2017, the Company had recorded cumulative federal and state NOLC
 assets of $12.7&amp;#xA0;million to offset against taxes payable in
 future periods. If unused, the Company&amp;#x2019;s NOLC carryforward
 assets will begin to expire in 2029. In addition, at
 December&amp;#xA0;31, 2017, the Company had $3.5&amp;#xA0;million of
 cumulative alternative minimum tax credits, general business tax
 credit and other state tax credit carryforwards to offset future
 income taxes payable.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;In March 2018, Unitil
 Corporation received notice that its Federal Income Tax return
 filings for the years ended December&amp;#xA0;31, 2015
 and&amp;#xA0;December&amp;#xA0;31, 2016 are under examination by the IRS.
 Currently, the Company believes that the ultimate resolution of
 this examination will not have a material impact on the
 Company&amp;#x2019;s financial statements. The Company remains subject
 to examination by New Hampshire tax authorities for the tax periods
 ended December&amp;#xA0;31, 2014; December&amp;#xA0;31, 2015; and
 December&amp;#xA0;31, 2016. Income tax filings for the year ended
 December&amp;#xA0;31, 2016 have been filed with the New Hampshire
 Department of Revenue Administration. The State of Maine has
 concluded its review of the Company&amp;#x2019;s tax returns for
 December&amp;#xA0;31, 2014, December&amp;#xA0;31, 2015, and
 December&amp;#xA0;31, 2016 which resulted in a small additional refund
 to the Company.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;The Company evaluated its
 tax positions at March&amp;#xA0;31, 2018 in accordance with the FASB
 Codification, and has concluded that no adjustment for recognition,
 &lt;font style="white-space:nowrap"&gt;de-recognition,&lt;/font&gt; settlement
 and foreseeable future events to any tax liabilities or assets as
 defined by the FASB Codification is required. The Company remains
 subject to examination by Federal, Maine, Massachusetts, and New
 Hampshire tax authorities for the tax periods ended
 December&amp;#xA0;31, 2014;&amp;#xA0;December&amp;#xA0;31, 2015; and
 December&amp;#xA0;31, 2016.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;The Company bills its
 customers for sales tax in Massachusetts and Maine and consumption
 tax in New Hampshire. These taxes are remitted to the appropriate
 departments of revenue in each state and are excluded from revenues
 on the Company&amp;#x2019;s unaudited Consolidated Statements of
 Earnings.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:IncomeTaxDisclosureTextBlock>
  <us-gaap:PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_0C8CC73C-0DF1-450B-8092-3F45D98FD606_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Retirement Benefit Costs
 &amp;#x2013;&lt;/b&gt; The Company sponsors the Unitil Corporation Retirement
 Plan (Pension Plan), the Unitil Employee Health and Welfare
 Benefits Plan (PBOP Plan) and the Unitil Corporation Supplemental
 Executive Retirement Plan (SERP).The net periodic benefit costs
 associated with these benefit plans consist of service cost and
 other components (See Note 9 to the Consolidated Financial
 Statements). In the first quarter of 2018, the Company adopted ASU
 &lt;font style="WHITE-SPACE: nowrap"&gt;No.&amp;#xA0;2017-07,&lt;/font&gt;
 &amp;#x201C;Compensation &amp;#x2013; Retirement Benefits (Topic 715) which
 amends the existing guidance relating to the presentation of net
 periodic pension cost and net periodic other post-retirement
 benefit costs. On a retrospective basis, the amendment requires an
 employer to separate the service cost component from the other
 components of net benefit cost and provides explicit guidance on
 how to present the service cost component and other components in
 the income statement.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Accordingly, for all
 periods presented in the Consolidated Financial Statements in this
 Form &lt;font style="WHITE-SPACE: nowrap"&gt;10-Q&lt;/font&gt; for the quarter
 ended March&amp;#xA0;31, 2018, the service cost component of the
 Company&amp;#x2019;s net periodic benefit costs is reported in
 &amp;#x201C;Operations and Maintenance&amp;#x201D; in the &amp;#x201C;Operating
 Expenses&amp;#x201D; section of the Consolidated Statements of Earnings
 while the other components of net periodic benefit costs are
 reported in the &amp;#x201C;Other Expense (Income), net&amp;#x201D; section
 of the Consolidated Statements of Earnings. Prior to adoption, the
 Company reported all components of its net periodic benefit costs
 in &amp;#x201C;Operations and Maintenance&amp;#x201D; in the &amp;#x201C;Operating
 Expenses&amp;#x201D; section of the Consolidated Statements of Earnings.
 The change in presentation for the quarter ended March&amp;#xA0;31,
 2018 resulted in a reduction of &amp;#x201C;Operations and
 Maintenance&amp;#x201D; and an increase in &amp;#x201C;Other Expense
 (Income), net&amp;#x201D; on the Consolidated Statements of Earnings for
 the prior period. There are $1.5&amp;#xA0;million and $1.6&amp;#xA0;million
 of &lt;font style="WHITE-SPACE: nowrap"&gt;non-service&lt;/font&gt; cost net
 periodic benefit costs reported in &amp;#x201C;Other Expense (Income),
 net for the three months ended March&amp;#xA0;31, 2018 and
 March&amp;#xA0;31, 2017, respectively, net of amounts deferred as
 regulatory assets for future recovery.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy>
  <us-gaap:PublicUtilitiesPolicyTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_C7E44613-0023-4E6B-BBE9-ADEA364EEE21_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Regulatory Accounting
 &amp;#x2013;&lt;/b&gt; The Company&amp;#x2019;s principal business is the
 distribution of electricity and natural gas by the three
 distribution utilities: Unitil Energy, Fitchburg and Northern
 Utilities. Unitil Energy and Fitchburg are subject to regulation by
 the FERC. Fitchburg is also regulated by the Massachusetts
 Department of Public Utilities (MDPU), Unitil Energy is regulated
 by the New Hampshire Public Utilities Commission (NHPUC) and
 Northern Utilities is regulated by the Maine Public Utilities
 Commission (MPUC) and NHPUC. Granite State, the Company&amp;#x2019;s
 natural gas transmission pipeline, is regulated by the FERC.
 Accordingly, the Company uses the Regulated Operations guidance as
 set forth in the FASB Codification. The Company has recorded
 Regulatory Assets and Regulatory Liabilities which will be
 recovered from customers, or applied for customer benefit, in
 accordance with rate provisions approved by the applicable public
 utility regulatory commission.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="79%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 181pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Regulatory
 Assets consist of the following ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Retirement
 Benefits&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;85.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;75.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;84.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Energy Supply&amp;#xA0;&amp;amp;
 Other Rate Adjustment Mechanisms&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;31.9&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;27.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;36.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Deferred Storm
 Charges&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;8.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Environmental&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;9.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income Taxes&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;6.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;5.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Regulatory
 Assets&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;145.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;135.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;149.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Current Portion of
 Regulatory Assets&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="VERTICAL-ALIGN: baseline; POSITION: relative; BOTTOM: 0.8ex"&gt;(1)&lt;/sup&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;34.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;32.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;39.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Regulatory Assets
 &amp;#x2013; noncurrent&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;111.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;103.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;109.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 6px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" border="0"&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="VERTICAL-ALIGN: baseline; POSITION: relative; BOTTOM: 0.8ex"&gt;(1)&lt;/sup&gt;&lt;/font&gt;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="top" align="left"&gt;
 &lt;p align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Reflects amounts included in Accrued Revenue, discussed above,
 on the Company&amp;#x2019;s Consolidated Balance Sheets.&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="80%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 194pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Regulatory
 Liabilities consist of the following ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Rate Adjustment
 Mechanisms&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Gas Pipeline Refund (Note
 6)&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income Taxes (Note
 8)&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;49.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;48.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Regulatory
 Liabilities&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;60.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;13.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;58.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Current Portion of
 Regulatory Liabilities&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.9&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;12.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Regulatory Liabilities
 &amp;#x2013; noncurrent&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;49.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;48.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Generally, the Company
 receives a return on investment on its regulated assets for which a
 cash outflow has been made. Included in Regulatory Assets as of
 March&amp;#xA0;31, 2018 are $0.5&amp;#xA0;million of deferred storm charges
 to be recovered over the year and $6.5&amp;#xA0;million of
 environmental costs, rate case costs and other expenditures to be
 recovered over varying periods in the next seven years. Regulators
 have authorized recovery of these expenditures, but without a
 return. Regulatory commissions can reach different conclusions
 about the recovery of costs, which can have a material impact on
 the Company&amp;#x2019;s Consolidated Financial Statements. The Company
 believes it is probable that its regulated distribution and
 transmission utilities will recover their investments in long-lived
 assets, including regulatory assets. If the Company, or a portion
 of its assets or operations, were to cease meeting the criteria for
 application of these accounting rules, accounting standards for
 businesses in general would become applicable and immediate
 recognition of any previously deferred costs, or a portion of
 deferred costs, would be required in the year in which the criteria
 are no longer met, if such deferred costs were not recoverable in
 the portion of the business that continues to meet the criteria for
 application of the FASB Codification topic on Regulated Operations.
 If unable to continue to apply the FASB Codification provisions for
 Regulated Operations, the Company would be required to apply the
 provisions for the Discontinuation of Rate-Regulated Accounting
 included in the FASB Codification. In the Company&amp;#x2019;s opinion,
 its regulated operations will be subject to the FASB Codification
 provisions for Regulated Operations for the foreseeable
 future.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:PublicUtilitiesPolicyTextBlock>
  <us-gaap:RevenueRecognitionPolicyTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_CC6381A1-0452-45D3-9C38-0170E15A6401_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Other Operating Revenue
 &amp;#x2013; &lt;font style="WHITE-SPACE: nowrap"&gt;Non-regulated&lt;/font&gt;
 &amp;#x2013;&lt;/b&gt; Usource, Unitil&amp;#x2019;s &lt;font style="WHITE-SPACE: nowrap"&gt;non-regulated&lt;/font&gt; subsidiary, conducts its
 business activities as a broker of competitive energy services.
 Usource does not take title to the electric and gas commodities
 which are the subject of the brokerage contracts. The Company
 records energy brokering revenues based upon the amount of
 electricity and gas delivered to customers through the end of the
 accounting period. Usource partners with certain entities to
 facilitate these brokerage services and pays these entities a fee
 under revenue sharing agreements.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As discussed above, the
 Company adopted ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt; in the first quarter of 2018.
 There was no cumulative effect of adoption to be recognized as an
 adjustment to the opening balance of Retained Earnings on the
 Company&amp;#x2019;s Consolidated Balance Sheets. ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt; requires that payments made by
 Usource to third parties (&amp;#x201C;Channel Partners&amp;#x201D;) for
 revenue sharing agreements are recognized net, as a reduction from
 revenue, where those payments were previously recognized gross as
 an operating expense. Therefore, beginning with the three months
 ended March&amp;#xA0;31, 2018 and going forward, payments made by
 Usource to Channel Partners for revenue sharing agreements are
 reported as &amp;#x201C;Other&amp;#x201D; in the &amp;#x201C;Operating
 Revenues&amp;#x201D; section of the Consolidated Statements of Earnings,
 along with Usource&amp;#x2019;s revenues. Prior to the adoption of ASU
 &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09,&lt;/font&gt; payments by
 Usource to third parties for revenue sharing agreements are
 included as &amp;#x201C;Operation and Maintenance&amp;#x201D; in the
 &amp;#x201C;Operating Expenses&amp;#x201D; section of the Consolidated
 Statements of Earnings. Those Channel Partner payments were
 $0.3&amp;#xA0;million each of the first quarters of 2018 and
 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;If ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt; had been adopted retroactively
 for the three months ended March&amp;#xA0;31, 2017, the result would
 have been corresponding reductions of $0.3&amp;#xA0;million in both
 &amp;#x201C;Other&amp;#x201D; in in the &amp;#x201C;Operating Revenues&amp;#x201D;
 section of the Consolidated Statements of Earnings and
 &amp;#x201C;Operation and Maintenance&amp;#x201D; in the &amp;#x201C;Operating
 Expenses&amp;#x201D; section of the Company&amp;#x2019;s Consolidated
 Statements of Earnings as shown in the tables below.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="72%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="11%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="11%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&amp;#xA0;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;As
 Reported&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" nowrap="nowrap" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;If ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt;&lt;br /&gt;
 Had Been in&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Effect&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 134pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Other
 Operating Revenues ($ millions):&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Usource Contract
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Revenue Sharing
 Payments&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Other Operating
 Revenues&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1pt"&gt;
 &lt;td height="16"&gt;&lt;/td&gt;
 &lt;td height="16" colspan="8"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&amp;#xA0;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;As
 Reported&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;If ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt;&lt;br /&gt;
 Had Been in&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Effect&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 169pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Operation
 and Maintenance Expense ($ millions):&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Operation and Maintenance
 Expense&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;17.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:RevenueRecognitionPolicyTextBlock>
  <us-gaap:ScheduleOfAssumptionsUsedTableTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_D5F9B794-B624-4F8A-9A25-2452AAEB9068_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following table
 includes the key weighted average assumptions used in determining
 the Company&amp;#x2019;s benefit plan costs and obligations:&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="91%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Used to Determine Plan
 Costs&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Discount Rate&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.60&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;%&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.10&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Rate of Compensation
 Increase&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.00&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;%&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.00&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Expected Long-term rate of
 return on plan assets&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.75&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;%&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.75&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Health Care Cost Trend Rate
 Assumed for Next Year&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.50&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;%&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8.00&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Ultimate Health Care Cost
 Trend Rate&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;4.50&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;%&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.00&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Year that Ultimate Health
 Care Cost Trend Rate is reached&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2024&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2025&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:ScheduleOfAssumptionsUsedTableTextBlock>
  <us-gaap:ScheduleOfCostsOfRetirementPlansTableTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_60F30A3A-DF82-4675-9B38-E2F9D24E807D_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following table
 provides the components of the Company&amp;#x2019;s Retirement plan
 costs ($000&amp;#x2019;s):&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="66%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Pension
 Plan&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;PBOP
 Plan&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;SERP&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 110pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three Months
 Ended March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Service Cost&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;848&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;824&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;733&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;744&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;122&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;115&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Interest Cost&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,469&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,514&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;851&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;978&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;101&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;98&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Expected Return on Plan
 Assets&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(1,946&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(1,819&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(409&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(337&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Prior Service Cost
 Amortization&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;81&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;66&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;327&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;350&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;47&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;47&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Actuarial Loss
 Amortization&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,447&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,176&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;346&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;524&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;122&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;74&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="WHITE-SPACE: nowrap"&gt;Sub-total&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,899&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,761&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,848&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2,259&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;392&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;334&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Amounts Capitalized and
 Deferred&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(720&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(662&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(742&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(1,037&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(113&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(99&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Net Periodic Benefit Cost
 Recognized&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,179&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,099&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,106&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,222&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;279&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;235&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:ScheduleOfCostsOfRetirementPlansTableTextBlock>
  <us-gaap:ScheduleOfDebtTableTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_2D81CCE1-C599-4E82-AB1E-E9973469D057_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;The following table
 details the borrowing limits, amounts outstanding and amounts
 available under the revolving Credit Facility as of March&amp;#xA0;31,
 2018, March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017:&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="79%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Revolving&amp;#xA0;Credit&amp;#xA0;Facility&amp;#xA0;($&amp;#xA0;millions)&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Limit&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;120.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;120.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;120.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Short-Term Borrowings
 Outstanding&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;45.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;76.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;38.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Letters of Credit
 Outstanding&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Available&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;74.7&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;42.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;81.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:ScheduleOfDebtTableTextBlock>
  <us-gaap:ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_229ECD7D-688A-4CA9-8284-97DAFE9F0B25_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;If ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt; had been adopted retroactively
 for the three months ended March&amp;#xA0;31, 2017, the result would
 have been corresponding reductions of $0.3&amp;#xA0;million in both
 &amp;#x201C;Other&amp;#x201D; in in the &amp;#x201C;Operating Revenues&amp;#x201D;
 section of the Consolidated Statements of Earnings and
 &amp;#x201C;Operation and Maintenance&amp;#x201D; in the &amp;#x201C;Operating
 Expenses&amp;#x201D; section of the Company&amp;#x2019;s Consolidated
 Statements of Earnings as shown in the tables below.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="72%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="11%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="11%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&amp;#xA0;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;As
 Reported&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" nowrap="nowrap" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;If ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt;&lt;br /&gt;
 Had Been in&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Effect&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 134pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Other
 Operating Revenues ($ millions):&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Usource Contract
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Revenue Sharing
 Payments&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Other Operating
 Revenues&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1pt"&gt;
 &lt;td height="16"&gt;&lt;/td&gt;
 &lt;td height="16" colspan="8"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&amp;#xA0;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;As
 Reported&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;If ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt;&lt;br /&gt;
 Had Been in&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Effect&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 169pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Operation
 and Maintenance Expense ($ millions):&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Operation and Maintenance
 Expense&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;17.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock>
  <us-gaap:ScheduleOfRegulatoryAssetsTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_E8CF40A8-B259-44BB-9B5E-D3A0F81C0921_1_0">&lt;div&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="79%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 181pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Regulatory
 Assets consist of the following ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Retirement
 Benefits&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;85.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;75.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;84.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Energy Supply&amp;#xA0;&amp;amp;
 Other Rate Adjustment Mechanisms&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;31.9&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;27.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;36.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Deferred Storm
 Charges&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;8.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Environmental&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;9.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income Taxes&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;6.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;5.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Regulatory
 Assets&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;145.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;135.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;149.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Current Portion of
 Regulatory Assets&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="VERTICAL-ALIGN: baseline; POSITION: relative; BOTTOM: 0.8ex"&gt;(1)&lt;/sup&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;34.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;32.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;39.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Regulatory Assets
 &amp;#x2013; noncurrent&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;111.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;103.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;109.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 6px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" border="0"&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="VERTICAL-ALIGN: baseline; POSITION: relative; BOTTOM: 0.8ex"&gt;(1)&lt;/sup&gt;&lt;/font&gt;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="top" align="left"&gt;
 &lt;p align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Reflects amounts included in Accrued Revenue, discussed above,
 on the Company&amp;#x2019;s Consolidated Balance Sheets.&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:ScheduleOfRegulatoryAssetsTextBlock>
  <us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" unitRef="shares" decimals="-5" id="id_10140147_15E7A094-8A80-4A49-A299-9D1E242F61B0_1_19">14800000</us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted>
  <us-gaap:CommonStockDividendsPerShareDeclared contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" unitRef="iso4217_USD_per_shares" decimals="INF" id="id_10140147_15E7A094-8A80-4A49-A299-9D1E242F61B0_1_20">0.365</us-gaap:CommonStockDividendsPerShareDeclared>
  <dei:CurrentFiscalYearEndDate contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_4FAD3C12-924D-4AD8-800D-62B375A3D9E0_1_3">--12-31</dei:CurrentFiscalYearEndDate>
  <us-gaap:DebtDisclosureTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_9D16745D-4D63-4B72-A85B-5CCB47F2A573_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;NOTE 4 &amp;#x2013; DEBT AND
 FINANCING ARRANGEMENTS&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Details on long-term debt
 at March&amp;#xA0;31, 2018, March&amp;#xA0;31, 2017 and December&amp;#xA0;31,
 2017 are shown below:&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="79%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;($
 millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Unitil
 Corporation:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.33% Senior Notes, Due
 May&amp;#xA0;1, 2022&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;20.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.70% Senior Notes, Due
 August&amp;#xA0;1, 2026&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;30.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;30.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;30.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Unitil Energy First
 Mortgage Bonds:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.24% Senior Secured Notes,
 Due March&amp;#xA0;2, 2020&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8.49% Senior Secured Notes,
 Due October&amp;#xA0;14, 2024&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.96% Senior Secured Notes,
 Due September&amp;#xA0;1, 2028&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;20.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8.00% Senior Secured Notes,
 Due May&amp;#xA0;1, 2031&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;15.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.32% Senior Secured Notes,
 Due September&amp;#xA0;15, 2036&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;15.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Fitchburg:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.75% Senior Notes, Due
 November&amp;#xA0;30, 2023&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.79% Senior Notes, Due
 October&amp;#xA0;15, 2025&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.52% Senior Notes, Due
 November&amp;#xA0;1, 2027&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.37% Senior Notes, Due
 January&amp;#xA0;15, 2029&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;12.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;12.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;12.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.90% Senior Notes, Due
 December&amp;#xA0;15, 2030&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;15.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.98% Senior Notes, Due
 June&amp;#xA0;1, 2031&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;14.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;14.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;14.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.32% Senior Notes, Due
 November&amp;#xA0;1, 2047&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;15.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Northern
 Utilities:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.95% Senior Notes, Due
 December&amp;#xA0;3, 2018&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.29% Senior Notes, Due
 March&amp;#xA0;2, 2020&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;16.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;25.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;25.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.52% Senior Notes, Due
 November&amp;#xA0;1, 2027&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;20.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.72% Senior Notes, Due
 December&amp;#xA0;3, 2038&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;50.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;50.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;50.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.42% Senior Notes, Due
 October&amp;#xA0;15, 2044&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;50.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;50.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;50.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.32% Senior Notes, Due
 November&amp;#xA0;1, 2047&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;30.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;30.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Granite
 State:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.15% Senior Notes, Due
 December&amp;#xA0;15, 2018&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.72% Senior Notes, Due
 November&amp;#xA0;1, 2027&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;15.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Unitil Realty
 Corp.:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8.00% Senior Secured Notes,
 Due Through August&amp;#xA0;1, 2017&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Long-Term
 Debt&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;396.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;336.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;409.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Unamortized Debt
 Issuance Costs&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Long-Term Debt, net
 of Unamortized Debt Issuance Costs&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;392.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;333.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;406.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Current
 Portion&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;29.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;30.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;29.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Long-term Debt, Less
 Current Portion&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;363.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;303.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;376.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Fair Value of Long-Term
 Debt&lt;/b&gt; &amp;#x2013; Currently, the Company believes that there is no
 active market in the Company&amp;#x2019;s debt securities, which have
 all been sold through private placements. If there were an active
 market for the Company&amp;#x2019;s debt securities, the fair value of
 the Company&amp;#x2019;s long-term debt would be estimated based on the
 quoted market prices for the same or similar issues, or on the
 current rates offered to the Company for debt of the same remaining
 maturities. The fair value of the Company&amp;#x2019;s long-term debt is
 estimated using Level&amp;#xA0;2 inputs (valuations based on quoted
 prices available in active markets for similar assets or
 liabilities, quoted prices for identical or similar assets or
 liabilities in inactive markets, inputs other than quoted prices
 that are directly observable, and inputs derived principally from
 market data.) In estimating the fair value of the Company&amp;#x2019;s
 long-term debt, the assumed market yield reflects the Moody&amp;#x2019;s
 Baa Utility Bond Average Yield. Costs, including prepayment costs,
 associated with the early settlement of long-term debt are not
 taken into consideration in determining fair value.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="79%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;($
 millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Estimated Fair Value of
 Long-Term Debt&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;428.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;374.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;457.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Credit
 Arrangements&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;On October&amp;#xA0;4, 2013,
 the Company entered into an Amended and Restated Credit Agreement
 (as further amended, restated, amended and restated, modified or
 supplemented from time to time, the &amp;#x201C;Credit Facility&amp;#x201D;).
 The Credit Facility terminates October&amp;#xA0;4, 2020 and provides
 for a borrowing limit of $120&amp;#xA0;million which includes a
 $25&amp;#xA0;million sublimit for the issuance of standby letters of
 credit. The Credit Facility provides Unitil with the ability to
 elect that borrowings under the Credit Facility bear interest under
 several options, including at a daily fluctuating rate of interest
 per annum equal to &lt;font style="WHITE-SPACE: nowrap"&gt;one-month&lt;/font&gt; London Interbank Offered
 Rate (LIBOR) plus 1.25%. Provided there is no event of default
 under the Credit Facility, the Company may on a &lt;font style="WHITE-SPACE: nowrap"&gt;one-time&lt;/font&gt; basis request an increase in
 the aggregate commitments under the Credit Facility by an aggregate
 additional amount of up to $30&amp;#xA0;million.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company utilizes the
 Credit Facility for cash management purposes related to its
 short-term operating activities. Total gross borrowings were
 $88.9&amp;#xA0;million for the three months ended March&amp;#xA0;31, 2018.
 Total gross repayments were $81.9&amp;#xA0;million for the three months
 ended March&amp;#xA0;31, 2017. The following table details the
 borrowing limits, amounts outstanding and amounts available under
 the revolving Credit Facility as of March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017:&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="79%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Revolving&amp;#xA0;Credit&amp;#xA0;Facility&amp;#xA0;($&amp;#xA0;millions)&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Limit&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;120.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;120.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;120.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Short-Term Borrowings
 Outstanding&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;45.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;76.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;38.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Letters of Credit
 Outstanding&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Available&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;74.7&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;42.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;81.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Credit Facility
 contains customary terms and conditions for credit facilities of
 this type, including affirmative and negative covenants. There are
 restrictions on, among other things, Unitil Corporation&amp;#x2019;s and
 its subsidiaries&amp;#x2019; ability to permit liens or incur
 indebtedness, and restrictions on Unitil&amp;#x2019;s ability to merge
 or consolidate with another entity or change its line of business.
 The affirmative and negative covenants under the Credit Facility
 shall apply until the Credit Facility terminates and all amounts
 borrowed under the Credit Facility are paid in full (or with
 respect to letters of credit, they are cash collateralized). The
 only financial covenant in the Credit Facility provides that Funded
 Debt to Capitalization (as each term is defined in the Credit
 Facility) cannot exceed 65%, tested on a quarterly basis. At
 March&amp;#xA0;31, 2018, March&amp;#xA0;31, 2017 and December&amp;#xA0;31,
 2017, the Company was in compliance with the covenants contained in
 the Credit Facility in effect on that date. (See also &amp;#x201C;Credit
 Arrangements&amp;#x201D; in Note 4.)&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The weighted average
 interest rates on all short-term borrowings and intercompany money
 pool transactions were 2.9% and 2.1% for the three months ended
 March&amp;#xA0;31, 2018 and March&amp;#xA0;31, 2017, respectively. The
 weighted average interest rate on all short-term borrowings for the
 twelve months ended December&amp;#xA0;31, 2017 was 2.4%.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;On November&amp;#xA0;1, 2017,
 Northern Utilities issued $20&amp;#xA0;million of Notes due 2027 at
 3.52% and $30&amp;#xA0;million of Notes due 2047 at 4.32%. Fitchburg
 issued $10&amp;#xA0;million of Notes due 2027 at 3.52% and
 $15&amp;#xA0;million of Notes due 2047 at 4.32%. Granite State issued
 $15&amp;#xA0;million of Notes due 2027 at 3.72%. Northern Utilities,
 Fitchburg and Granite State used the net proceeds from these
 offerings to refinance higher cost long-term debt that matured in
 2017, to repay short-term debt and for general corporate purposes.
 Approximately $0.7&amp;#xA0;million of costs associated with these
 issuances have been netted against Long-Term Debt for presentation
 purposes on the Consolidated Balance Sheets.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In April 2014, Unitil
 Service Corp. entered into a financing arrangement, structured as a
 capital lease obligation, for various information systems and
 technology equipment. Final funding under this capital lease
 occurred on October&amp;#xA0;30, 2015, resulting in total funding of
 $13.4&amp;#xA0;million. The capital lease matures on September&amp;#xA0;30,
 2020. As of March&amp;#xA0;31, 2018, there are $2.7&amp;#xA0;million of
 current and $4.4&amp;#xA0;million of noncurrent obligations under this
 capital lease on the Company&amp;#x2019;s Consolidated Balance
 Sheets.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Unitil Corporation and its
 utility subsidiaries, Fitchburg, Unitil Energy, Northern Utilities,
 and Granite State are currently rated &amp;#x201C;BBB+&amp;#x201D; by
 Standard&amp;#xA0;&amp;amp; Poor&amp;#x2019;s Ratings Services. Unitil
 Corporation and Granite State are currently rated
 &amp;#x201C;Baa2&amp;#x201D;, and Fitchburg, Unitil Energy and Northern
 Utilities are currently rated &amp;#x201C;Baa1&amp;#x201D; by Moody&amp;#x2019;s
 Investors Services.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Northern Utilities enters
 into asset management agreements under which Northern Utilities
 releases certain natural gas pipeline and storage assets, resells
 the natural gas storage inventory to an asset manager and
 subsequently repurchases the inventory over the course of the
 natural gas heating season at the same price at which it sold the
 natural gas inventory to the asset manager. There was
 $1.0&amp;#xA0;million, $3.8&amp;#xA0;million and $8.5&amp;#xA0;million of
 natural gas storage inventory at March&amp;#xA0;31, 2018,&amp;#xA0;March
 31, 2017 and December&amp;#xA0;31, 2017, respectively, related to these
 asset management agreements. The amount of natural gas inventory
 released in March 2018 and payable in April 2018 is
 $1.0&amp;#xA0;million and is recorded in Accounts Payable at
 March&amp;#xA0;31, 2018. The amount of natural gas inventory released
 in March 2017 and payable in April 2017 was $2.0&amp;#xA0;million and
 was recorded in Accounts Payable at March&amp;#xA0;31, 2017. The amount
 of natural gas inventory released in December 2017 and payable in
 January 2018 was $3.1&amp;#xA0;million and was recorded in Accounts
 Payable at December&amp;#xA0;31, 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 18px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Guarantees&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company provides
 limited guarantees on certain energy and natural gas storage
 management contracts entered into by the distribution utilities.
 The Company&amp;#x2019;s policy is to limit the duration of these
 guarantees. As of March&amp;#xA0;31, 2018, there were approximately
 $17.9&amp;#xA0;million of guarantees outstanding and the longest term
 guarantee extends through August 2018.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company also guarantees
 the payment of principal, interest and other amounts payable on the
 notes issued by Granite State. As of March&amp;#xA0;31, 2018, the
 principal amount outstanding for the 7.15% Granite State notes was
 $3.3&amp;#xA0;million.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:DebtDisclosureTextBlock>
  <dei:DocumentPeriodEndDate contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_C4347E44-A62B-4126-B792-B871B6581011_1_2">2018-03-31</dei:DocumentPeriodEndDate>
  <dei:EntityFilerCategory contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_4FAD3C12-924D-4AD8-800D-62B375A3D9E0_1_4">Accelerated Filer</dei:EntityFilerCategory>
  <us-gaap:EnvironmentalLossContingencyDisclosureTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_55BCE678-C298-47A2-A89C-F5B764FBE9BA_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;NOTE 7 &amp;#x2013;
 ENVIRONMENTAL MATTERS&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;UNITIL&amp;#x2019;S
 ENVIRONMENTAL MATTERS ARE DESCRIBED IN NOTE 8 TO THE FINANCIAL
 STATEMENTS IN ITEM&amp;#xA0;8 OF PART II OF UNITIL CORPORATION&amp;#x2019;S
 FORM &lt;font style="WHITE-SPACE: nowrap"&gt;10-K&lt;/font&gt; FOR
 DECEMBER&amp;#xA0;31, 2017 AS FILED WITH THE SECURITIES AND EXCHANGE
 COMMISSION ON FEBRUARY&amp;#xA0;1, 2018.&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company&amp;#x2019;s past
 and present operations include activities that are generally
 subject to extensive and complex federal and state environmental
 laws and regulations. The Company is in material compliance with
 applicable environmental and safety laws and regulations and, as of
 March&amp;#xA0;31, 2018, has not identified any material losses
 reasonably likely to be incurred in excess of recorded amounts.
 However, we cannot assure that significant costs and liabilities
 will not be incurred in the future. It is possible that other
 developments, such as increasingly stringent federal, state or
 local environmental laws and regulations could result in increased
 environmental compliance costs. Based on the Company&amp;#x2019;s
 current assessment of its environmental responsibilities, existing
 legal requirements and regulatory policies, the Company does not
 believe that these environmental costs will have a material adverse
 effect on the Company&amp;#x2019;s consolidated financial position or
 results of operations.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Northern Utilities
 Manufactured Gas Plant Sites &amp;#x2013;&lt;/b&gt; Northern Utilities has an
 extensive program to identify, investigate and remediate former
 manufactured gas plant (MGP) sites, which were operated from the
 &lt;font style="WHITE-SPACE: nowrap"&gt;mid-1800s&lt;/font&gt; through the
 &lt;font style="WHITE-SPACE: nowrap"&gt;mid-1900s.&lt;/font&gt; In New
 Hampshire, MGP sites were identified in Dover, Exeter, Portsmouth,
 Rochester and Somersworth. In Maine, Northern Utilities has
 documented the presence of MGP sites in Lewiston and Portland, and
 a former MGP disposal site in Scarborough.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Northern Utilities has
 worked with the Maine Department of Environmental Protection (ME
 DEP) and New Hampshire Department of Environmental Services (NH
 DES) to address environmental concerns with these sites. Northern
 Utilities or others have substantially completed remediation of all
 sites, though on site monitoring continues and it is possible that
 future activities may be required. Supplemental remediation at the
 Exeter and Somersworth MGP sites commenced in the second quarter of
 2018 with anticipated completions by the third quarter of
 2018.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The NHPUC and MPUC have
 approved regulatory mechanisms for the recovery of MGP
 environmental costs. For Northern Utilities&amp;#x2019; New Hampshire
 division, the NHPUC has approved the recovery of MGP environmental
 costs over succeeding seven-year periods. For Northern
 Utilities&amp;#x2019; Maine division, the MPUC has authorized the
 recovery of environmental remediation costs over succeeding
 five-&amp;#xA0;year periods.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Environmental
 Obligations table below shows the amounts accrued for Northern
 Utilities related to estimated future cleanup costs associated with
 Northern Utilities&amp;#x2019; environmental remediation obligations for
 former MGP sites. Corresponding Regulatory Assets were recorded to
 reflect that the future recovery of these environmental remediation
 costs is expected based on regulatory precedent and established
 practices.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Fitchburg&amp;#x2019;s
 Manufactured Gas Plant Site &amp;#x2013;&lt;/b&gt; Fitchburg has worked with
 the Massachusetts Department of Environmental Protection to address
 environmental concerns with the former MGP site at Sawyer Passway,
 and has substantially completed remediation activities, though on
 site monitoring will continue and it is possible that future
 activities may be required.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Environmental
 Obligations table below shows the amounts accrued for Fitchburg
 related to estimated future cleanup costs for permanent remediation
 of the Sawyer Passway site with a corresponding Regulatory Asset
 recorded to reflect that the recovery of these environmental
 remediation costs are probable through the regulatory process. The
 amounts recorded do not assume any amounts are recoverable from
 insurance companies or other third parties. Fitchburg recovers the
 environmental response costs incurred at this former MGP site in
 gas rates pursuant to the terms of a cost recovery agreement
 approved by the MDPU. Pursuant to this agreement, Fitchburg is
 authorized to amortize and recover environmental response costs
 from gas customers over succeeding seven-year periods.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following table sets
 forth a summary of changes in the Company&amp;#x2019;s liability for
 Environmental Obligations for the three months ended March&amp;#xA0;31,
 2018 and 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="76%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Environmental
 Obligations&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="5"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="5"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="5"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="22" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;($
 millions)&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Fitchburg&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Northern&lt;br /&gt;
 Utilities&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="22" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three months ended
 March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Balance at
 Beginning of Period&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Additions&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Payments /
 Reductions&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Balance at End of
 Period&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Current
 Portion&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Noncurrent Balance at
 End of Period&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:EnvironmentalLossContingencyDisclosureTextBlock>
  <us-gaap:MarketableSecuritiesTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_CEAF690D-AC59-4D6F-B6B5-673D0D0AC390_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Changes in the fair value
 of these investments are recorded in Other Expense, net.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="82%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 162pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Fair Value
 of Marketable Securities ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Equity Funds&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.9&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Fixed Income
 Funds&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Cash and
 Equivalents&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Marketable
 Securities&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;5.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:MarketableSecuritiesTextBlock>
  <us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_D399067A-2F6E-4BD6-8718-5B0BB17AAB65_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;NOTE 9: RETIREMENT
 BENEFIT OBLIGATIONS&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company &lt;font style="WHITE-SPACE: nowrap"&gt;co-sponsors&lt;/font&gt; the Unitil Corporation
 Retirement Plan (Pension Plan), the Unitil Retiree Health and
 Welfare Benefits Plan (PBOP Plan), and the Unitil Corporation
 Supplemental Executive Retirement Plan (SERP) to provide certain
 pension and postretirement benefits for its retirees and current
 employees. Please see Note 10 to the Consolidated Financial
 Statements in the Company&amp;#x2019;s Form &lt;font style="WHITE-SPACE: nowrap"&gt;10-K&lt;/font&gt; for the year ended
 December&amp;#xA0;31, 2017 as filed with the SEC on February&amp;#xA0;1,
 2018 for additional information regarding these plans.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following table
 includes the key weighted average assumptions used in determining
 the Company&amp;#x2019;s benefit plan costs and obligations:&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="91%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Used to Determine Plan
 Costs&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Discount Rate&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.60&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;%&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.10&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Rate of Compensation
 Increase&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.00&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;%&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.00&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Expected Long-term rate of
 return on plan assets&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.75&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;%&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.75&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Health Care Cost Trend Rate
 Assumed for Next Year&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.50&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;%&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8.00&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Ultimate Health Care Cost
 Trend Rate&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;4.50&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;%&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.00&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Year that Ultimate Health
 Care Cost Trend Rate is reached&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2024&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2025&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following table
 provides the components of the Company&amp;#x2019;s Retirement plan
 costs ($000&amp;#x2019;s):&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="66%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Pension
 Plan&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;PBOP
 Plan&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;SERP&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 110pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three Months
 Ended March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Service Cost&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;848&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;824&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;733&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;744&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;122&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;115&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Interest Cost&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,469&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,514&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;851&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;978&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;101&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;98&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Expected Return on Plan
 Assets&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(1,946&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(1,819&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(409&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(337&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Prior Service Cost
 Amortization&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;81&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;66&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;327&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;350&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;47&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;47&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Actuarial Loss
 Amortization&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,447&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,176&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;346&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;524&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;122&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;74&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="WHITE-SPACE: nowrap"&gt;Sub-total&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,899&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,761&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,848&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2,259&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;392&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;334&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Amounts Capitalized and
 Deferred&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(720&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(662&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(742&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(1,037&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(113&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(99&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Net Periodic Benefit Cost
 Recognized&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,179&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,099&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,106&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
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 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,222&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
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 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;279&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
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 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;235&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
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 &lt;/td&gt;
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 &lt;/td&gt;
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 &lt;td valign="bottom"&gt;
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 &lt;/td&gt;
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 &lt;/td&gt;
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 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;u&gt;Employer
 Contributions&lt;/u&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As of March&amp;#xA0;31, 2018,
 the Company had made $1.2&amp;#xA0;million and $1.0&amp;#xA0;million of
 contributions to its Pension Plan and PBOP Plan, respectively, in
 2018. The Company, along with its subsidiaries, expects to continue
 to make contributions to its Pension and PBOP Plans in 2018 and
 future years at minimum required and discretionary funding levels
 consistent with the amounts recovered in the distribution
 utilities&amp;#x2019; rates for these Pension and PBOP Plan
 costs.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As of March&amp;#xA0;31, 2018,
 the Company had made $43,900 of benefit payments under the SERP
 Plan in 2018. The Company presently anticipates making an
 additional $356,300 of benefit payments under the SERP Plan in
 2018.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock>
  <us-gaap:PublicUtilitiesDisclosureTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_CF852BA1-7843-40E6-8602-7931F07F1C63_1_0">&lt;div&gt;
 &lt;p style="margin-top:18px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;NOTE 6 &amp;#x2013; REGULATORY
 MATTERS&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:6px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;UNITIL&amp;#x2019;S REGULATORY
 MATTERS ARE DESCRIBED IN NOTE 8 TO THE FINANCIAL STATEMENTS IN ITEM
 8 OF PART II OF UNITIL CORPORATION&amp;#x2019;S FORM &lt;font style="white-space:nowrap"&gt;10-K&lt;/font&gt; FOR DECEMBER&amp;#xA0;31, 2017 AS
 FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON
 FEBRUARY&amp;#xA0;1, 2018.&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:6px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Tax Cuts and Jobs Act of
 2017&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:6px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;At the end of December 2017,
 the United States Congress voted and the President signed into law
 major federal tax law changes Tax Cuts and Jobs Act of 2017 (TCJA)
 effective for tax year 2018. Among other things, the TCJA
 substantially reduces the corporate income tax rate to
 21&amp;#xA0;percent, effective January&amp;#xA0;1, 2018. Each state public
 utility commission, with jurisdiction over the areas that are
 served by Unitil&amp;#x2019;s electric and gas subsidiary companies, has
 or is in the process of issuing procedural orders directing how the
 tax law changes are to be reflected in rates, including requiring
 that the companies provide certain filings and calculations. Unitil
 is fully complying with these orders and will make any necessary
 changes to its rates as directed by the commissions. The FERC has
 opened a rulemaking proceeding on this matter (described below).
 The Company believes that the ultimate resolution of these matters
 will not have a material impact on its financial position,
 operating results or cash flows.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;In Maine, Northern
 Utilities&amp;#x2019; Maine division has recently completed a base rate
 case (described more fully below). The MPUC had issued a procedural
 order indicating that the tax law changes were to be reflected in
 its calculation of final rates for the Company, and the final order
 in that docket incorporated the lower tax rates.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;In New Hampshire, Northern
 Utilities&amp;#x2019; New Hampshire division has a base rate case
 proceeding pending (described below), and the NHPUC issued an order
 directing the Company to show how the tax changes can be effected
 within the schedule for the rate case. On April&amp;#xA0;6, 2018,
 Northern Utilities filed a proposed comprehensive settlement
 agreement among the Company, the Staff of the Public Utilities
 Commission and the Office of Consumer Advocate which includes the
 effect of the tax changes in the calculation of the agreed upon
 revenue requirement. With respect to Unitil Energy, the NHPUC
 directed the Company to make a filing by April&amp;#xA0;1, 2018,
 showing the effect of the tax law changes on rates. On
 March&amp;#xA0;16, 2018, the Company filed for its annual step increase
 pursuant to the provisions of its last base rate case, and included
 in that filing proposed adjustments to account for the tax changes.
 This proposal remains pending.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;In Massachusetts, the
 Attorney General filed a petition with the MDPU requesting that it
 open an investigation to require the flow-through of the tax law
 changes in rates for all utilities subject to the MDPU&amp;#x2019;s
 jurisdiction. On February&amp;#xA0;2, 2018 the MDPU issued an order
 opening an investigation into the effect on rates of the decrease
 in the federal corporate income tax rate on the MDPU&amp;#x2019;s
 regulated utilities. The MDPU consolidated the Attorney
 General&amp;#x2019;s petition into its investigation. In its order, the
 MDPU required each utility company subject to its jurisdiction to
 file, by May&amp;#xA0;1, 2018, a proposal to address the effects of the
 TCJA and to reduce its rates through the establishment of a revised
 cost of service incorporating the lower federal corporate income
 tax rate as of January&amp;#xA0;1, 2018. Such proposals must address
 the adjustment of rates going forward and also incorporate the
 timely refund of revenues associated with the lower tax expense on
 current income and excess accumulated deferred income taxes (ADIT).
 Fitchburg plans to submit filings for both its gas and electric
 divisions with estimated revenue reductions of $0.8 million at each
 respective division. This matter remains pending.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;On March&amp;#xA0;15, 2018, the
 FERC issued a Notice of Proposed Rulemaking (NOPR) that would allow
 it to determine which pipelines under the Natural Gas Act may be
 collecting unjust and unreasonable rates in light of the corporate
 tax rate reduction and changes to the FERC&amp;#x2019;s income tax
 allowance policies. The proposed rule, if adopted, would require an
 interstate pipeline to file a &lt;font style="white-space:nowrap"&gt;one-time&lt;/font&gt; report on the regulated rate
 effect of the new tax law and changes to the FERC&amp;#x2019;s income
 tax allowance policies. In addition to filing the &lt;font style="white-space:nowrap"&gt;one-time&lt;/font&gt; report, each pipeline would
 have four options: 1) make a limited rate filing to reduce its
 rates by the percentage reduction in its cost of service shown in
 its report; 2) commit to file either a prepackaged uncontested rate
 settlement or a general rate case by December&amp;#xA0;31, 2018; 3)
 file a statement explaining why it believes its current rates are
 reasonable and no reduction is necessary; or 4) file the required
 report without taking any other action, at which point FERC would
 consider whether to initiate an investigation. Granite State is
 reviewing the NOPR and will comply with all FERC requirements.
 Granite State believes that the ultimate resolution of these
 matters will not have a material impact on its financial position,
 operating results or cash flows.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:18px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Rate Case
 Activity&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:6px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Unitil Energy &amp;#x2013;
 Base Rates &amp;#x2013;&lt;/b&gt; On April&amp;#xA0;20, 2017 the NHPUC issued its
 final order approving a settlement between Unitil Energy, NHPUC
 Staff and the Office of Consumer Advocate providing for a permanent
 increase of $4.1&amp;#xA0;million in electric base rates, and a three
 year rate plan with an additional rate step adjustment, effective
 May&amp;#xA0;1, 2017, of $0.9&amp;#xA0;million, followed by two rate step
 adjustments in May of 2018 and 2019 to recover the revenue
 requirements associated with annual capital expenditures as defined
 under the rate plan. On March&amp;#xA0;16, 2018, Unitil Energy filed
 its second step adjustment. The filing also incorporated the
 revenue requirement effect of the federal tax decrease pursuant to
 the TCJA, along with the termination of the &lt;font style="white-space:nowrap"&gt;one-year&lt;/font&gt; reconciliation adjustment
 which had recouped the difference between temporary rates and final
 rates. The net effect of the three adjustments results in a
 proposed revenue decrease of $0.4&amp;#xA0;million. The proposal
 remains pending.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Fitchburg &amp;#x2013; Base
 Rates &amp;#x2013; Electric &amp;#x2013;&lt;/b&gt; On April&amp;#xA0;29, 2016 the MDPU
 issued an order approving a $2.1&amp;#xA0;million increase in
 Fitchburg&amp;#x2019;s electric base revenue decoupling target,
 effective May&amp;#xA0;1, 2016. As part of its order, the MDPU
 approved, with modifications, Fitchburg&amp;#x2019;s request for an
 annual capital cost recovery mechanism, which allows for increases
 to target revenues to recover the revenue requirement associated
 with capital additions as defined under the mechanism. In 2016,
 Fitchburg filed its first compliance report on capital investments
 for calendar year 2015. The MDPU approved the recovery of
 approximately $0.5&amp;#xA0;million, effective January&amp;#xA0;1, 2017,
 subject to further investigation and reconciliation. On
 December&amp;#xA0;18, 2017, the MDPU approved Fitchburg&amp;#x2019;s
 calendar year 2015 capital investments and associated revenue
 requirements for recovery. On June&amp;#xA0;29, 2017, Fitchburg filed
 its compliance report on capital investments for calendar year
 2016. On December&amp;#xA0;20, 2017, the MDPU approved the recovery of
 approximately $0.4&amp;#xA0;million, effective January&amp;#xA0;1, 2018,
 subject to further investigation and reconciliation.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Fitchburg &amp;#x2013; Base
 Rates &amp;#x2013; Gas &amp;#x2013;&lt;/b&gt; On April&amp;#xA0;29, 2016, the MDPU
 issued an order approving a $1.6&amp;#xA0;million increase in
 Fitchburg&amp;#x2019;s gas base revenue decoupling target, effective
 May&amp;#xA0;1, 2016.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Fitchburg &amp;#x2013; Gas
 Operations &amp;#x2013;&lt;/b&gt; On October&amp;#xA0;31, 2016, Fitchburg
 submitted its annual filing under its gas system enhancement
 program to recover the revenue requirements associated with its
 projected capital additions in 2017 as defined under the program.
 The filing sought approval to collect an additional
 $0.9&amp;#xA0;million of annual revenue requirements. On April&amp;#xA0;28,
 2017, the MDPU approved recovery of the projected 2017 revenue
 requirements, subject to reconciliation and a cap of 1.5% on the
 change in revenue requirement to be billed in any given year. The
 cap resulted in approval of an additional $0.5&amp;#xA0;million of
 annual revenue requirements to be billed effective May&amp;#xA0;1, 2017
 with the remaining $0.4&amp;#xA0;million of annual revenue requirements
 deferred for billing in future periods. In its April&amp;#xA0;28, 2017
 annual reconciliation filing for 2016 revenue requirements, the
 Company requested that the MDPU waive the 1.5% revenue requirement
 cap. On October&amp;#xA0;31, 2017, the MDPU approved a &lt;font style="white-space:nowrap"&gt;one-year&lt;/font&gt; waiver of the cap and allowed
 the Company to bill the total 2016 actual reconciliation balance.
 On October&amp;#xA0;31, 2017, Fitchburg submitted its annual filing
 under the program to recover the revenue requirements associated
 with its projected capital additions in 2018. In this filing, the
 Company has requested to change the revenue requirements cap to 3%.
 This matter remains pending.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Northern Utilities
 &amp;#x2013; Base Rates &amp;#x2013; Maine &amp;#x2013;&lt;/b&gt; In May 2017, Northern
 Utilities filed a base rate case with the MPUC seeking to increase
 annual revenues by $6.0&amp;#xA0;million. The requested increase was
 subsequently supplemented by an additional $0.7&amp;#xA0;million
 associated with the Company&amp;#x2019;s Targeted Area &lt;font style="white-space:nowrap"&gt;Build-out&lt;/font&gt; (TAB) Program (see below). In
 addition to the distribution base rate increase, Northern Utilities
 requested to extend its Targeted Infrastructure Replacement
 Adjustment mechanism (TIRA) (see below).&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;On February&amp;#xA0;28, 2018
 the MPUC issued its Final Order (Order) in the base rate case. The
 Order provides for a revenue increase of $2.1&amp;#xA0;million offset
 by a revenue decrease of $2.2&amp;#xA0;million to incorporate the
 effect of the lower federal income tax rate under the TCJA,
 resulting in an overall annual revenue decrease of
 $0.1&amp;#xA0;million. The MPUC approved a return on equity of
 9.5&amp;#xA0;percent and a capital structure reflecting 50&amp;#xA0;percent
 equity and 50&amp;#xA0;percent long-term debt. The Order also provides
 for a reduction in annual depreciation expense reducing the
 Company&amp;#x2019;s annual operating costs by approximately
 $0.5&amp;#xA0;million. The Order addresses a number of other issues
 including a change to therm billing, increases in other delivery
 charges, and cost recovery under the Company&amp;#x2019;s TAB Program
 and TIRA mechanism. The new rates and other changes became
 effective as of March&amp;#xA0;1, 2018. On March&amp;#xA0;16, 2018, the
 Company filed a Motion for Clarification requesting the MPUC
 clarify its Order in light of what the Company believes to be an
 inadvertent inconsistency with the Order regarding 2016 TIRA
 Eligible Facilities, rate base and related annual revenue
 adjustments.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Northern Utilities
 &amp;#x2013; Targeted Infrastructure Replacement Adjustment &amp;#x2013;
 Maine &amp;#x2013;&lt;/b&gt; The settlement in Northern Utilities&amp;#x2019; Maine
 division&amp;#x2019;s 2013 rate case allowed the Company to implement a
 TIRA rate mechanism to adjust base distribution rates annually to
 recover the revenue requirements associated with targeted
 investments in gas distribution system infrastructure replacement
 and upgrade projects, including the Company&amp;#x2019;s Cast Iron
 Replacement Program (CIRP). The TIRA had an initial term of four
 years and covered targeted capital expenditures in 2013 through
 2016. In its Order in the current base rate case (see above), the
 MPUC approved an extension of the Company&amp;#x2019;s TIRA mechanism,
 with revision, for an additional eight-year period, which will
 allow for annual rate adjustments through the end of the CIRP
 program. On March&amp;#xA0;30, 2018, the Company filed its request to
 increase its annual base rates to recover the revenue requirements
 for 2017 Eligible Facilities. This matter remains
 pending.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Northern Utilities
 &amp;#x2013; Targeted Area &lt;font style="white-space:nowrap"&gt;Build-out&lt;/font&gt; Program &amp;#x2013; Maine
 &amp;#x2013;&lt;/b&gt; In December 2015, the MPUC approved a TAB program and
 associated rate surcharge mechanism. This program is designed to
 allow the economic extension of natural gas mains to new, targeted
 service areas in Maine. It allows customers in the targeted area
 the ability to pay a rate surcharge, instead of a large upfront
 payment or capital contribution to connect to the natural gas
 delivery system. The initial pilot of the TAB program was approved
 for the City of Saco, and is being built out over a period of three
 years, with the potential to add 1,000 new customers and
 approximately $1&amp;#xA0;million in annual distribution revenue in the
 Saco area. A second TAB program was approved for the Town of
 Sanford, and has the potential to add 2,000 new customers and
 approximately $2&amp;#xA0;million in annual distribution revenue in the
 Sanford area. In its base rate case Order (above), the MPUC
 approved the inclusion of Saco TAB investments in rate base along
 with a cost recovery incentive mechanism for future TAB
 investments.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Northern Utilities
 &amp;#x2013; Base Rates &amp;#x2013; New Hampshire &amp;#x2013;&lt;/b&gt; On
 June&amp;#xA0;5, 2017, Northern Utilities filed for a base rate
 increase with the NHPUC seeking to increase annual revenues by
 $4.7&amp;#xA0;million. On June&amp;#xA0;15, 2017, the NHPUC suspended the
 Company&amp;#x2019;s proposed permanent rates tariffs while the filing
 is under regulatory review&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;Northern Utilities reached a
 settlement agreement on temporary rates to produce an increase in
 annual revenues of approximately $1.6&amp;#xA0;million, effective with
 service rendered on and after August&amp;#xA0;1, 2017, and until a
 final, &lt;font style="white-space:nowrap"&gt;non-appealable&lt;/font&gt; order
 on permanent rates is issued. The settlement agreement was approved
 by the NHPUC on July&amp;#xA0;31, 2017. As of March&amp;#xA0;31, 2018,
 Northern Utilities has deferred approximately $1.1&amp;#xA0;million of
 costs associated with this base rate case. Once a final decision on
 permanent rates is issued, it will be reconciled back to the date
 that temporary rates were implemented.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;On April&amp;#xA0;6, 2018,
 Northern Utilities filed a proposed comprehensive settlement
 agreement among the Company, the NHPUC Staff and the Office of the
 Consumer Advocate. The settling parties agreed to an annual revenue
 increase of $2.6&amp;#xA0;million and an offsetting decrease of
 $1.7&amp;#xA0;million to reflect the effect of the TCJA, for a net
 annual revenue increase of $0.9&amp;#xA0;million, effective May&amp;#xA0;1,
 2018. The parties also agreed to a step increase of
 $2.3&amp;#xA0;million to recover post-test year capital investments,
 also effective May&amp;#xA0;1, 2018. Under the agreement, the company
 may file for a second step increase for effect May&amp;#xA0;1, 2019 to
 recover eligible capital investments in 2018, up to a revenue
 requirement cap of $2.2&amp;#xA0;million. If the company chooses the
 option to implement the second step increase, the next distribution
 base rate case shall be based on an historic test year of no
 earlier than twelve months ending December&amp;#xA0;31, 2020. A hearing
 before the NHPUC to consider the settlement agreement was held on
 April&amp;#xA0;12, 2018. This matter remains pending.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Northern Utilities
 &amp;#x2013; Pipeline Refund &amp;#x2013;&lt;/b&gt; On February&amp;#xA0;19, 2015, the
 FERC issued Opinion &lt;font style="white-space:nowrap"&gt;No.&amp;#xA0;524-A,&lt;/font&gt; the final order in
 Portland Natural Gas Transmission&amp;#x2019;s (PNGTS) Section&amp;#xA0;4
 rate case, requiring PNGTS to issue refunds to shippers. Northern
 Utilities received a pipeline refund of $22.0&amp;#xA0;million on
 April&amp;#xA0;15, 2015. As a gas supply-related refund, the entire
 amount refunded will be credited to Northern Utilities&amp;#x2019;
 customers and marketers over three years as directed by the NHPUC
 and MPUC. As of March&amp;#xA0;31, 2018, $21.4&amp;#xA0;million has been
 refunded to Northern Utilities&amp;#x2019; customers and marketers. The
 Company has recorded current Regulatory Liabilities related to
 these refunds of $0.6&amp;#xA0;million on its Consolidated Balance
 Sheets as of March&amp;#xA0;31, 2018.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Granite State &amp;#x2013;
 Base Rates &amp;#x2013;&lt;/b&gt; Granite State has in place a FERC-approved
 second amended settlement agreement under which it is permitted to
 file annually, each June, for a rate adjustment to recover the
 revenue requirements associated with specified capital investments
 in gas transmission projects up to a specific cap on expenditures.
 On June&amp;#xA0;21, 2017 Granite State filed for an annual revenue
 increase under this provision of $0.2&amp;#xA0;million, effective
 August&amp;#xA0;1, 2017. The FERC issued an order approving the filing
 on July&amp;#xA0;28, 2017. This is the last annual rate adjustment
 allowed under the second amended settlement because Granite must
 file a general rate case pursuant to Section&amp;#xA0;4 of the Natural
 Gas Act by April&amp;#xA0;30, 2018 with rates effective no later than
 November&amp;#xA0;1, 2018.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:18px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Other
 Matters&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:6px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;NHPUC Energy Efficiency
 Resource Standard Proceeding &amp;#x2013;&lt;/b&gt; In May 2015, the NHPUC
 opened a proceeding to establish an Energy Efficiency Resource
 Standard (&amp;#x201C;EERS&amp;#x201D;), an energy efficiency policy with
 specific targets or goals for energy savings that New Hampshire
 electric and gas utilities must meet. On April&amp;#xA0;27, 2016, a
 comprehensive settlement agreement was filed by the parties,
 including Unitil Energy and Northern Utilities, which was approved
 by the NHPUC on August&amp;#xA0;2, 2016. The settlement provides for:
 extending the 2014-2016 Core program an additional year (through
 2017); establishing an EERS; establishing a recovery mechanism to
 compensate the utilities for lost-revenue related to the EERS
 programs; and approving the performance incentives and processes
 for stakeholder involvement, evaluation, measurement and
 verification, and oversight of the EERS programs. In accordance
 with the Settlement, on September&amp;#xA0;1, 2017, the New Hampshire
 electric and gas utilities jointly filed a Statewide Energy
 Efficiency Plan for the period 2018-2020. The Settlement and the
 Statewide Energy Efficiency Plan for the period 2018-2020 were
 approved on January&amp;#xA0;2, 2018.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Unitil Energy &amp;#x2013;
 Electric Grid Modernization &amp;#x2013;&lt;/b&gt; In July 2015, the NHPUC
 opened an investigation into Grid Modernization to address a
 variety of issues related to Distribution System Planning, Customer
 Engagement with Distributed Energy Resources, and Utility Cost
 Recovery and Financial Incentives. The NHPUC engaged a consultant
 to direct a Working Group to investigate these issues and to
 prepare a final report with recommendations for the Commission. The
 final report was filed on March&amp;#xA0;20, 2017. This matter remains
 pending.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Unitil Energy &amp;#x2013; Net
 Metering &amp;#x2013;&lt;/b&gt; Pursuant to legislation that became effective
 in May 2016, the NHPUC opened a proceeding to consider alternatives
 to the net metering tariffs currently in place. The NHPUC issued an
 Order on June&amp;#xA0;23, 2017. The Order removes the cap on the total
 amount of generation capacity which may be owned or operated by
 customer-generators eligible for net metering. The order also
 adopts an alternative net metering tariff for small
 customer-generators (those with renewable energy systems of 100 kW
 or less) which will remain in effect for a period of years while
 further data is collected and analyzed, &lt;font style="white-space:nowrap"&gt;&lt;font style="white-space:nowrap"&gt;time-of-use&lt;/font&gt;&lt;/font&gt; and other pilot
 programs are implemented, and a distributed energy resource
 valuation study is conducted. Systems that are installed or queued
 during this period will have their net metering rate structure
 &amp;#x201C;grandfathered&amp;#x201D; until December&amp;#xA0;31, 2040. The
 Company does not believe that this proceeding will have a material
 adverse impact on the Company&amp;#x2019;s financial position, operating
 results or cash flows.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Fitchburg &amp;#x2013;
 Electric Operations &amp;#x2013;&lt;/b&gt; On November&amp;#xA0;1, 2017, Fitchburg
 submitted its 2017 annual reconciliation of costs and revenues for
 transition and transmission under its restructuring plan, including
 the reconciliation of costs and revenues for a number of other
 surcharges and cost factors, for review and approval by the MDPU.
 All of the rates were given final approval by the MDPU on
 December&amp;#xA0;28, 2017, effective January&amp;#xA0;1, 2018.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Fitchburg &amp;#x2013; Service
 Quality &amp;#x2013;&lt;/b&gt; On March&amp;#xA0;1, 2018, Fitchburg submitted its
 2017 Service Quality Reports for both its gas and electric
 divisions in accordance with new Service Quality Guidelines issued
 by the MDPU in December 2015. Fitchburg reported that it met or
 exceeded its benchmarks for service quality performance in all
 metrics for both its gas and electric divisions. These filings are
 pending approval.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Fitchburg &amp;#x2013; Solar
 Generation &amp;#x2013;&lt;/b&gt; On August&amp;#xA0;19, 2016, Fitchburg filed a
 petition with the MDPU seeking approval to develop a 1.3 MW solar
 generation facility located on Company property in Fitchburg,
 Massachusetts, including a cost recovery mechanism to share the
 costs and benefits of the project among all Fitchburg customers. On
 November&amp;#xA0;9, 2016, the MDPU approved a Settlement Agreement
 supporting the proposal, which was reached among the Company, the
 Attorney General of Massachusetts, and the &lt;font style="white-space:nowrap"&gt;Low-Income&lt;/font&gt; Weatherization and Fuel
 Assistance Program Network. Construction of the solar generating
 facility was completed and the facility began generating power on
 November&amp;#xA0;22, 2017. On April&amp;#xA0;2, 2018, Fitchburg submitted
 its first filing pursuant to its Solar Cost Adjustment tariff, by
 which the company recovers its annual revenue requirement related
 to its investment in the solar generation facility. The filing
 seeks a net amount of approximately $300,000 for recovery effective
 June&amp;#xA0;1, 2018.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="font-size:1px;margin-top:12px;margin-bottom:0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="margin-top:0px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Fitchburg &amp;#x2013; Energy
 Diversity &amp;#x2013;&lt;/b&gt; Governor Baker signed into law H4568
 &amp;#x201C;An Act to Promote Energy Diversity&amp;#x201D; on August&amp;#xA0;8,
 2016. Among many sections in the bill, the primary provision adds
 new sections 83c and 83d to the 2008 Green Communities Act.
 Section&amp;#xA0;83c requires every electric distribution company
 (EDC), including Fitchburg, to jointly and competitively solicit
 proposals for at least 400 MW&amp;#x2019;s of offshore wind energy
 generation by June&amp;#xA0;30, 2017, as part of a total of 1,600 MW of
 offshore wind the EDCs are directed to procure by June&amp;#xA0;30,
 2027. The procurement requirement is subject to a determination by
 the MDPU that the proposed long-term contracts are cost-effective.
 Section&amp;#xA0;83d further requires the EDCs to jointly seek
 proposals for cost effective clean energy (hydro and other)
 long-term contracts via one or more staggered solicitations, the
 first of which shall be issued not later than April&amp;#xA0;1, 2017,
 for a total of 9,450,000 megawatt-hours by December&amp;#xA0;31, 2022.
 Emergency regulations implementing these new provisions, 220 C.M.R.
 &amp;#xA7;&amp;#xA0;23.00 et seq. and 220 C.M.R. &amp;#xA7; 24.00 et seq. were
 adopted by the MDPU on December&amp;#xA0;29, 2016, and adopted as final
 regulations on March&amp;#xA0;8, 2017. The EDCs issued the RFP for
 Long-Term Contracts for Clean Energy Projects, pursuant to
 Section&amp;#xA0;83d on March&amp;#xA0;31, 2017 and project proposals were
 received on July&amp;#xA0;27, 2017. Final selection of projects
 concluded in the first quarter of 2018 and contract negotiation is
 underway. The EDCs issued the RFP for Long-Term Contracts for
 Offshore Wind Energy Projects pursuant to Section&amp;#xA0;83c on
 June&amp;#xA0;29, 2017 and project proposals were received on
 December&amp;#xA0;20, 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Fitchburg &amp;#x2013; Clean
 Energy RFP &amp;#x2013;&lt;/b&gt; Pursuant to Section&amp;#xA0;83a of the Green
 Communities Act in Massachusetts and similar clean energy
 directives established in Connecticut and Rhode Island, state
 agencies and the electric distribution companies in the three
 states, including Fitchburg, issued an RFP for clean energy
 resources (including Class&amp;#xA0;I renewable generation and large
 hydroelectric generation) in November 2015. The RFP sought
 proposals for clean energy and transmission projects that can
 deliver new renewable energy to the three states. Project proposals
 were received in January 2016. Selection of contracts concluded
 during the fourth quarter of 2016 and contract negotiations
 concluded during the second quarter of 2017. On September&amp;#xA0;20,
 2017, Fitchburg, along with the other three EDCs, filed for
 approval of the purchase power agreements which were negotiated as
 a result of the joint solicitation. A hearing on the merits was
 held in February 2018. This matter remains pending.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Fitchburg &amp;#x2013; Other
 &amp;#x2013;&lt;/b&gt; On August&amp;#xA0;25, 2017, the Massachusetts Department
 of Energy Resources (&amp;#x201C;DOER&amp;#x201D;) issued its final Solar
 Massachusetts Renewable Target (SMART) Program regulations. These
 regulations were promulgated pursuant to Chapter 75 of the Acts of
 2016, which required the DOER to establish a new solar incentive
 program. The regulation is designed to support the continued
 development of an additional 1,600 MW of solar renewable energy
 generating sources via a declining block compensation mechanism. On
 September&amp;#xA0;12, 2017, the Massachusetts electric utilities
 jointly filed a model SMART tariff with the MDPU to implement the
 program and propose a cost recovery mechanism. Hearings on the
 merits were held in late March and early April 2018. This filing
 remains pending. In the interim, the current program for solar
 renewable energy credits, known as &lt;font style="white-space:nowrap"&gt;SREC-II,&lt;/font&gt; remains in effect for all
 eligible solar facilities.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;On May&amp;#xA0;11, 2016, the
 MDPU issued an Order commencing a rulemaking proceeding to adopt
 emergency regulations amending 220 C.M.R. &amp;#xA7; 18.00 et seq.
 (&amp;#x201C;Net Metering Regulations&amp;#x201D;). Specifically, the MDPU
 amended its Net Metering Regulations to implement the net metering
 provisions of An Act Relative to Solar Energy, St. 2016, c. 75,
 &amp;#xA7;&amp;#xA7; &lt;font style="white-space:nowrap"&gt;3-9,&lt;/font&gt; and to
 make additional clerical changes to the Net Metering Regulations.
 On July&amp;#xA0;15, 2016, the MDPU issued an order approving Final Net
 Metering Regulations. Fitchburg&amp;#x2019;s tariff, filed in compliance
 with the new regulations, was approved on February&amp;#xA0;7,
 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;In December&amp;#xA0;2013, the
 MDPU opened an investigation into Modernization of the Electric
 Grid. The stated objective of the Grid Modernization proceeding is
 to ensure that the electric distribution companies &amp;#x201C;adopt
 grid modernization policies and practices.&amp;#x201D; In
 June&amp;#xA0;2014, the MDPU issued its first Grid Modernization order,
 setting forth a requirement that each electric distribution company
 submit a &lt;font style="white-space:nowrap"&gt;ten-year&lt;/font&gt; strategic
 Grid Modernization Plan (GMP). As part of the GMP, each company
 must include a five-year Short-Term Investment Plan (STIP), which
 must include an approach to achieving advanced metering
 functionality within five years of the Department&amp;#x2019;s approval
 of the GMP. The filing of a GMP is a recurring obligation and must
 be updated as part of subsequent base distribution rate cases,
 which by statute must occur no less often than every five years.
 Capital investments contained in the STIP are eligible for
 &lt;font style="white-space:nowrap"&gt;pre-authorization,&lt;/font&gt; meaning
 that the MDPU will not revisit in later filings whether the Company
 should have proceeded with these investments. Fitchburg and the
 Commonwealth&amp;#x2019;s three other electric distribution companies
 filed their initial GMPs on August&amp;#xA0;19, 2015. These filings are
 currently under MDPU review and remain pending.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;On January&amp;#xA0;28, 2016 the
 MDPU approved Fitchburg&amp;#x2019;s Three-Year Energy Efficiency Plan
 for 2016-2018, subject to limited modifications and directives in
 the Order. The Department found that the savings goals included in
 each Three-Year Plan are reasonable and are consistent with the
 achievement of all available cost-effective energy efficiency;
 approved each Program Administrator&amp;#x2019;s program implementation
 cost budget for the Three-Year Plans; approved the performance
 incentive pool, mechanism, and payout rates; found that all
 proposed energy efficiency programs are cost-effective; found that
 funding sources are reasonable and that each Program Administrator
 may recover the funds to implement its energy efficiency plan
 through its Energy Efficiency Surcharge; and found that each
 Program Administrator&amp;#x2019;s Three-Year Plan is consistent with
 the Green Communities Act, the Guidelines, and Department
 precedent.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;FERC Transmission Formula
 Rate Proceedings &amp;#x2013;&lt;/b&gt; Pursuant to Section&amp;#xA0;206 of the
 Federal Power Act, there are several pending proceedings before the
 FERC concerning the justness and reasonableness of the Return on
 Equity (&amp;#x201C;ROE&amp;#x201D;) component of the &lt;font style="white-space:nowrap"&gt;ISO-New&lt;/font&gt; England, Inc. Participating
 Transmission Owners&amp;#x2019; Regional Network Service and Local
 Network Service formula rates. On April&amp;#xA0;14, 2017, the U.S.
 Court of Appeals for the D.C. Circuit issued an opinion vacating a
 decision of the FERC with respect to these formula rates, and
 remanded it for further proceedings. The FERC had found that the
 Transmission Owners existing ROE was unlawful, and had set a new
 ROE. The Court found that the FERC had failed to articulate a
 satisfactory explanation for its orders. At this time, the ROE set
 in the vacated order will remain in place until further FERC action
 is taken. Separately, on March&amp;#xA0;15, 2018, the Transmission
 Owners filed a petition for review with the Court of certain orders
 of the FERC setting for hearing other complaints challenging the
 allowed return on equity component of the formula rates. Fitchburg
 and Unitil Energy are Participating Transmission Owners, although
 Unitil Energy does not own transmission plant. To the extent that
 these proceedings result in any changes to the rates being charged,
 a retroactive reconciliation may be required. The Company does not
 believe that these proceedings will have a material adverse impact
 on the Company&amp;#x2019;s financial condition or results of
 operations.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:18px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;&lt;b&gt;Legal
 Proceedings&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:6px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;The Company is involved in
 legal and administrative proceedings and claims of various types,
 which arise in the ordinary course of business. The Company
 believes, based upon information furnished by counsel and others,
 that the ultimate resolution of these claims will not have a
 material impact on its financial position, operating results or
 cash flows.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="margin-top:12px;margin-bottom:0px"&gt;&lt;font style="font-family:Times New Roman" size="2"&gt;In early 2009, a putative
 class action complaint was filed against Unitil&amp;#x2019;s
 Massachusetts based utility, Fitchburg, in Massachusetts&amp;#x2019;
 Worcester Superior Court (the &amp;#x201C;Court&amp;#x201D;), (captioned
 Bellermann et al v. Fitchburg Gas and Electric Light Company). The
 Complaint seeks an unspecified amount of damages, including the
 cost of temporary housing and alternative fuel sources, emotional
 and physical pain and suffering and property damages allegedly
 incurred by customers in connection with the loss of electric
 service during the ice storm in Fitchburg&amp;#x2019;s service territory
 in December 2008. The Massachusetts Supreme Judicial Court issued
 an order denying class certification status in July&amp;#xA0;2016,
 though the plaintiffs&amp;#x2019; individual claims remain pending. The
 Company continues to believe these claims are without merit and
 will continue to defend itself vigorously.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:PublicUtilitiesDisclosureTextBlock>
  <us-gaap:ReceivablesPolicyTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_B176B5BD-C3C6-4DAC-B5B9-59C747DB0BC1_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Exchange Gas
 Receivable&lt;/b&gt; &amp;#x2013; Northern Utilities and Fitchburg have gas
 exchange and storage agreements whereby natural gas purchases
 during the months of April through October are delivered to a third
 party. The third party delivers natural gas back to the Company
 during the months of November through March. The exchange and
 storage gas volumes are recorded at weighted average cost. The
 following table shows the components of Exchange Gas Receivable as
 of March&amp;#xA0;31, 2018, March&amp;#xA0;31, 2017 and December&amp;#xA0;31,
 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="81%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 127pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Exchange Gas
 Receivable ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Northern
 Utilities&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Fitchburg&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Exchange Gas
 Receivable&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:ReceivablesPolicyTextBlock>
  <us-gaap:ScheduleOfRegulatoryLiabilitiesTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_886D8702-AE56-4A76-B38E-3484308041CC_1_0">&lt;div&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="80%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 194pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Regulatory
 Liabilities consist of the following ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Rate Adjustment
 Mechanisms&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Gas Pipeline Refund (Note
 6)&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income Taxes (Note
 8)&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;49.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;48.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Regulatory
 Liabilities&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;60.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;13.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;58.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Current Portion of
 Regulatory Liabilities&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.9&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;12.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Regulatory Liabilities
 &amp;#x2013; noncurrent&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;49.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;48.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:ScheduleOfRegulatoryLiabilitiesTextBlock>
  <us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_749676B2-6B25-453F-9FCD-839680EFCCA6_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following table
 provides significant segment financial data for the three months
 ended March&amp;#xA0;31, 2018 and March&amp;#xA0;31, 2017:&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="71%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Electric&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Non-&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Regulated&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Other&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1pt"&gt;
 &lt;td height="8"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 168pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three Months
 Ended March&amp;#xA0;31, 2018 ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Revenues:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Billed and Unbilled
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;91.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;61.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;153.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Rate Adjustment Mechanism
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(4.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(4.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(8.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other Operating Revenue
 &amp;#x2013; &lt;font style="WHITE-SPACE: nowrap"&gt;Non-Regulated&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 2em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Operating
 Revenues&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;87.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;57.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;145.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Segment Profit
 (Loss)&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;12.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(0.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;15.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Identifiable Segment
 Assets&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;712.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;481.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;42.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,244.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Capital
 Expenditures&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;6.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1pt"&gt;
 &lt;td height="8"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 168pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three Months
 Ended March&amp;#xA0;31, 2017 ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Revenues&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;74.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;49.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;126.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Segment Profit&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;12.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Identifiable Segment
 Assets&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;641.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;442.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;42.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,134.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Capital
 Expenditures&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;17.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1pt"&gt;
 &lt;td height="8"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 124pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;As of
 December&amp;#xA0;31, 2017 ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Identifiable Segment
 Assets&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;714.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;476.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;44.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,241.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock>
  <us-gaap:StockholdersEquityNoteDisclosureTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_C861D485-A1F6-4161-A449-A1AE018B8ADA_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;NOTE 5 &amp;#x2013; COMMON
 STOCK AND PREFERRED STOCK&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Common
 Stock&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company&amp;#x2019;s common
 stock trades on the New York Stock Exchange under the symbol,
 &amp;#x201C;UTL.&amp;#x201D;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company had 14,107,741,
 14,815,585 and 14,860,123 shares of common stock outstanding at
 March&amp;#xA0;31, 2017, December&amp;#xA0;31, 2017 and March&amp;#xA0;31,
 2018, respectively.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Unitil Corporation
 Common Stock Offering&lt;/b&gt; - On December&amp;#xA0;14, 2017, the Company
 issued and sold 690,000 shares of its common stock at a price of
 $48.30 per share in a registered public offering (Offering). The
 Company&amp;#x2019;s net increase to Common Equity and Cash proceeds
 from the Offering was approximately $31.7&amp;#xA0;million and was used
 to make equity capital contributions to the Company&amp;#x2019;s
 regulated utility subsidiaries, repay short-term debt and for
 general corporate purposes.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Dividend Reinvestment
 and Stock Purchase Plan -&lt;/b&gt; During the first quarter of 2018, the
 Company sold 7,812 shares of its common stock, at an average price
 of $43.71 per share, in connection with its Dividend Reinvestment
 and Stock Purchase Plan (DRP) and its 401(k) plans resulting in net
 proceeds of approximately $341,500. The DRP provides participants
 in the plan a method for investing cash dividends on the
 Company&amp;#x2019;s common stock and cash payments in additional shares
 of the Company&amp;#x2019;s common stock.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Stock Plan -&lt;/b&gt; The
 Company maintains the Unitil Corporation Second Amended and
 Restated 2003 Stock Plan (the Stock Plan). Participants in the
 Stock Plan are selected by the Compensation Committee of the Board
 of Directors to receive awards under the Stock Plan, including
 awards of restricted shares (Restricted Shares), or of restricted
 stock units (Restricted Stock Units). The Compensation Committee
 has the authority to determine the sizes of awards; determine the
 terms and conditions of awards in a manner consistent with the
 Stock Plan; construe and interpret the Stock Plan and any agreement
 or instrument entered into under the Stock Plan as they apply to
 participants; establish, amend, or waive rules and regulations for
 the Stock Plan&amp;#x2019;s administration as they apply to
 participants; and, subject to the provisions of the Stock Plan,
 amend the terms and conditions of any outstanding award to the
 extent such terms and conditions are within the discretion of the
 Compensation Committee as provided for in the Stock Plan. On
 April&amp;#xA0;19, 2012, the Company&amp;#x2019;s shareholders approved an
 amendment to the Stock Plan to, among other things, increase the
 maximum number of shares of common stock available for awards to
 plan participants.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The maximum number of
 shares available for awards to participants under the Stock Plan is
 677,500. The maximum number of shares that may be awarded in any
 one calendar year to any one participant is 20,000. In the event of
 any change in capitalization of the Company, the Compensation
 Committee is authorized to make an equitable adjustment to the
 number and kind&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;of shares of common stock
 that may be delivered under the Stock Plan and, in addition, may
 authorize and make an equitable adjustment to the Stock
 Plan&amp;#x2019;s annual individual award limit.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 18px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;u&gt;Restricted
 Shares&lt;/u&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Outstanding awards of
 Restricted Shares fully vest over a period of four years at a rate
 of 25% each year. During the vesting period, dividends on
 Restricted Shares underlying the award may be credited to a
 participant&amp;#x2019;s account. The Company may deduct or withhold, or
 require a participant to remit to the Company, an amount sufficient
 to satisfy any taxes required by federal, state, or local law or
 regulation to be withheld with respect to any taxable event arising
 in connection with an Award. For purposes of compensation expense,
 Restricted Shares vest immediately upon a participant becoming
 eligible for retirement, as defined in the Stock Plan. Prior to the
 end of the vesting period, the restricted shares are subject to
 forfeiture if the participant ceases to be employed by the Company
 other than due to the participant&amp;#x2019;s death.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;On January&amp;#xA0;29, 2018,
 37,510 Restricted Shares were issued in conjunction with the Stock
 Plan with an aggregate market value at the date of issuance of
 approximately $1.6&amp;#xA0;million. There were 90,882 and 94,880
 &lt;font style="WHITE-SPACE: nowrap"&gt;non-vested&lt;/font&gt; shares under
 the Stock Plan as of March&amp;#xA0;31, 2018 and 2017, respectively.
 The weighted average grant date fair value of these shares was
 $41.93 and $39.55, respectively. The compensation expense
 associated with the issuance of shares under the Stock Plan is
 being recognized over the vesting period and was $1.8&amp;#xA0;million
 and $1.7&amp;#xA0;million for the three months ended March&amp;#xA0;31,
 2018 and 2017, respectively. At March&amp;#xA0;31, 2018, there was
 approximately $1.3&amp;#xA0;million of total unrecognized compensation
 cost under the Stock Plan which is expected to be recognized over
 approximately 2.8 years. During the three months ended
 March&amp;#xA0;31, 2018 there were 784 shares of Restricted Shares
 forfeited. There were no cancellations under the Stock Plan during
 the three months ended March&amp;#xA0;31, 2018.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;u&gt;Restricted Stock
 Units&lt;/u&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Restricted Stock Units earn
 dividend equivalents and will generally be settled by payment to
 each Director as soon as practicable following the Director&amp;#x2019;s
 separation from service to the Company. The Restricted Stock Units
 will be paid such that the Director will receive (i)&amp;#xA0;70% of
 the shares of the Company&amp;#x2019;s common stock underlying the
 restricted stock units and (ii)&amp;#xA0;cash in an amount equal to the
 fair market value of 30% of the shares of the Company&amp;#x2019;s
 common stock underlying the Restricted Stock Units. The equity
 portion of Restricted Stock Units activity during the three months
 ended March&amp;#xA0;31, 2018 in conjunction with the Stock Plan are
 presented in the following table:&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="76%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="81%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="8" nowrap="nowrap" align="center"&gt;
 &lt;p style="MARGIN-BOTTOM: 1px; MARGIN-TOP: 0px" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Restricted
 Stock Units (Equity Portion)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Units&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Weighted&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Average&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Stock&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Price&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Restricted Stock Units as
 of December&amp;#xA0;31, 2017&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;52,224&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;36.22&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Restricted Stock Units
 Granted&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Dividend Equivalents
 Earned&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;453&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;42.04&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Restricted Stock Units
 Settled&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Restricted Stock Units as
 of March&amp;#xA0;31, 2018&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;52,677&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;36.27&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;There were 43,696
 Restricted Stock Units outstanding as of March&amp;#xA0;31, 2017 with a
 weighted average stock price of $33.49. Included in Other
 Noncurrent Liabilities on the Company&amp;#x2019;s Consolidated Balance
 Sheets as of March&amp;#xA0;31, 2018, March&amp;#xA0;31, 2017 and
 December&amp;#xA0;31, 2017 is $1.0&amp;#xA0;million, $0.8&amp;#xA0;million and
 $1.0&amp;#xA0;million, respectively, representing the fair value of
 liabilities associated with the portion of fully vested RSUs that
 will be settled in cash.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 18px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Preferred
 Stock&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;There was
 $0.2&amp;#xA0;million, or 1,893 shares, of Unitil Energy&amp;#x2019;s 6.00%
 Series Preferred Stock outstanding as of March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017. There were less
 than $0.1&amp;#xA0;million of total dividends declared on Preferred
 Stock in each of the three month periods ended March&amp;#xA0;31, 2018
 and March&amp;#xA0;31, 2017, respectively.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:StockholdersEquityNoteDisclosureTextBlock>
  <us-gaap:BasisOfAccountingPolicyPolicyTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_675F9F95-9FD8-4DBD-9668-F1FE89022B6C_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Basis of Presentation
 &amp;#x2013;&lt;/b&gt; The accompanying unaudited consolidated financial
 statements of Unitil have been prepared in accordance with the
 instructions to Form &lt;font style="WHITE-SPACE: nowrap"&gt;10-Q&lt;/font&gt;
 and include all of the information and footnotes required by
 generally accepted accounting principles. In the opinion of
 management, all adjustments considered necessary for a fair
 presentation have been included. The results of operations for the
 three months ended March&amp;#xA0;31, 2018 are not necessarily
 indicative of results to be expected for the year ending
 December&amp;#xA0;31, 2018. For further information, please refer to
 Note 1 of Part II to the Consolidated Financial Statements &amp;#x2013;
 &amp;#x201C;Summary of Significant Accounting Policies&amp;#x201D; of the
 Company&amp;#x2019;s Form &lt;font style="WHITE-SPACE: nowrap"&gt;10-K&lt;/font&gt;
 for the year ended December&amp;#xA0;31, 2017, as filed with the
 Securities and Exchange Commission (SEC) on February&amp;#xA0;1, 2018,
 for a description of the Company&amp;#x2019;s Basis of
 Presentation.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:BasisOfAccountingPolicyPolicyTextBlock>
  <us-gaap:DerivativesPolicyTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_6DA293F5-E79B-4990-BF5F-4203755E97A1_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Derivatives &amp;#x2013;&lt;/b&gt;
 The Company&amp;#x2019;s regulated energy subsidiaries enter into energy
 supply contracts to serve their electric and gas customers. The
 Company follows a procedure for determining whether each contract
 qualifies as a derivative instrument under the guidance provided by
 the FASB Codification on Derivatives and Hedging. For each
 contract, the Company reviews and documents the key terms of the
 contract. Based on those terms and any additional relevant
 components of the contract, the Company determines and documents
 whether the contract qualifies as a derivative instrument as
 defined in the FASB Codification. The Company has determined that
 none of its energy supply contracts, other than the regulatory
 approved hedging program, described below, qualifies as a
 derivative instrument under the guidance set forth in the FASB
 Codification.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company has managed a
 regulatory approved hedging program for Northern Utilities, which
 is designed to fix or cap a portion of its gas supply costs for the
 coming years of service through the purchase of European call
 option contracts. Any gains or losses resulting from these option
 contracts are passed through to customers directly through Northern
 Utilities&amp;#x2019; Cost of Gas Adjustment Clause. The fair value of
 these derivatives is determined using Level&amp;#xA0;2 inputs
 (valuations based on quoted prices in markets that are not active
 or for which all significant inputs are observable, either directly
 or indirectly), specifically based on the NYMEX closing prices for
 outstanding contracts as of the balance sheet date. As a result of
 the ratemaking process, the Company records gains and losses
 resulting from the change in fair value of the derivatives as
 regulatory liabilities or assets, then reclassifies these gains or
 losses into Cost of Gas Sales when the gains and losses are passed
 through to customers through the Cost of Gas Adjustment Clause.
 Currently, there are no active transactions and the Company has
 proposed to regulators to discontinue the program. This matter
 remains pending.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As of March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017 the Company had
 zero, 1.2&amp;#xA0;billion and 0.6&amp;#xA0;billion cubic feet (BCF),
 respectively, outstanding in natural gas futures and options
 contracts under its hedging program.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As of March&amp;#xA0;31, 2018
 and March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017, the
 Company&amp;#x2019;s derivatives that are not designated as hedging
 instruments under FASB ASC &lt;font style="WHITE-SPACE: nowrap"&gt;815-20&lt;/font&gt; have a fair value of $0,
 $0.3&amp;#xA0;million and less than $0.1&amp;#xA0;million,
 respectively.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:DerivativesPolicyTextBlock>
  <us-gaap:EarningsPerShareBasicAndDiluted contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" unitRef="iso4217_USD_per_shares" decimals="2" id="id_10140147_15E7A094-8A80-4A49-A299-9D1E242F61B0_1_18">1.06</us-gaap:EarningsPerShareBasicAndDiluted>
  <dei:EntityRegistrantName contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_4FAD3C12-924D-4AD8-800D-62B375A3D9E0_1_1">UNITIL CORP</dei:EntityRegistrantName>
  <us-gaap:IncomeTaxPolicyTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_2D1A1E6E-ACBC-495A-8A74-D9BD97269BAA_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Income Taxes &amp;#x2013;&lt;/b&gt;
 The Company is subject to Federal and State income taxes as well as
 various other business taxes. This process involves estimating the
 Company&amp;#x2019;s current tax liabilities as well as assessing
 temporary and permanent differences resulting from the timing of
 the deductions of expenses and recognition of taxable income for
 tax and book accounting purposes. These temporary differences
 result in deferred tax assets and liabilities, which are included
 in the Company&amp;#x2019;s Consolidated Balance Sheets. The Company
 accounts for income tax assets, liabilities and expenses in
 accordance with the FASB Codification guidance on Income Taxes. The
 Company classifies penalty and interest expense related to income
 tax liabilities as income tax expense and interest expense,
 respectively, in the Consolidated Statements of
 Earnings.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Provisions for income taxes
 are calculated in each of the jurisdictions in which the Company
 operates for each period for which a statement of earnings is
 presented. The Company accounts for income taxes in accordance with
 the FASB Codification guidance on Income Taxes, which requires an
 asset and liability approach for the financial accounting and
 reporting of income taxes. Significant judgments and estimates are
 required in determining the current and deferred tax assets and
 liabilities. The Company&amp;#x2019;s current and deferred tax assets
 and liabilities reflect its best assessment of estimated future
 taxes to be paid. In accordance with the FASB Codification, the
 Company periodically assesses the realization of its deferred tax
 assets and liabilities and adjusts the income tax provision, the
 current tax liability and deferred taxes in the period in which the
 facts and circumstances which gave rise to the revision become
 known.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:IncomeTaxPolicyTextBlock>
  <us-gaap:MarketableSecuritiesPolicy contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_1C69DE42-B00A-4D66-A362-7DDD81D09C22_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Investments in
 Marketable Securities&lt;/b&gt; &amp;#x2013; The Company has a trust through
 which it invests in a variety of equity and fixed income mutual
 funds. These funds are intended to satisfy obligations under the
 Company&amp;#x2019;s Supplemental Executive Retirement Plan
 (&amp;#x201C;SERP&amp;#x201D;) (See further discussion of the SERP in Note
 9.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;At March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017, the fair value of
 the Company&amp;#x2019;s investments in these trading securities, which
 are recorded on the Consolidated Balance Sheets in Other Assets,
 were $5.1&amp;#xA0;million, $3.3 and $3.6&amp;#xA0;million, respectively,
 as shown in the table below. These investments are valued based on
 quoted prices from active markets and are categorized in
 Level&amp;#xA0;1 as they are actively traded and no valuation
 adjustments have been applied. Changes in the fair value of these
 investments are recorded in Other Expense, net.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="82%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 162pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Fair Value
 of Marketable Securities ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Equity Funds&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.9&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Fixed Income
 Funds&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Cash and
 Equivalents&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Marketable
 Securities&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;5.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:MarketableSecuritiesPolicy>
  <us-gaap:PropertyPlantAndEquipmentPolicyTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_BDCDDD2F-F7DF-4C76-B286-124B9B2611F4_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Utility Plant
 &amp;#x2013;&lt;/b&gt; The cost of additions to Utility Plant and the cost of
 renewals and betterments are capitalized. Cost consists of labor,
 materials, services and certain indirect construction costs,
 including an allowance for funds used during construction (AFUDC).
 The costs of current repairs and minor replacements are charged to
 appropriate operating expense accounts. The original cost of
 utility plant retired or otherwise disposed of is charged to the
 accumulated provision for depreciation. The Company includes in its
 mass asset depreciation rates, which are periodically reviewed as
 part of its ratemaking proceedings, cost of removal amounts to
 provide for future negative salvage value. At March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017, the Company
 estimates that the cost of removal amounts, which are recorded on
 the Consolidated Balance Sheets in Cost of Removal Obligations are
 $86.6&amp;#xA0;million, $79.7&amp;#xA0;million, and $84.3&amp;#xA0;million,
 respectively.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:PropertyPlantAndEquipmentPolicyTextBlock>
  <us-gaap:ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_44AF0115-2041-44D7-BB4C-2F2F6AF102CD_1_0">&lt;div&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="79%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;($
 millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Estimated Fair Value of
 Long-Term Debt&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;428.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;374.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;457.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock>
  <us-gaap:ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_5CE1DA26-7A87-4A76-9B4F-E3E0BDDC7613_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following table sets
 forth a summary of changes in the Company&amp;#x2019;s liability for
 Environmental Obligations for the three months ended March&amp;#xA0;31,
 2018 and 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="76%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Environmental
 Obligations&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="5"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="5"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="5"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="22" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;($
 millions)&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Fitchburg&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Northern&lt;br /&gt;
 Utilities&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="22" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three months ended
 March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Balance at
 Beginning of Period&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Additions&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Payments /
 Reductions&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Balance at End of
 Period&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less: Current
 Portion&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Noncurrent Balance at
 End of Period&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock>
  <us-gaap:ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_E3373919-5C53-473D-996B-CE52E44FB1E6_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The equity portion of
 Restricted Stock Units activity during the three months ended
 March&amp;#xA0;31, 2018 in conjunction with the Stock Plan are
 presented in the following table:&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="76%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="81%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="8" nowrap="nowrap" align="center"&gt;
 &lt;p style="MARGIN-BOTTOM: 1px; MARGIN-TOP: 0px" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Restricted
 Stock Units (Equity Portion)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Units&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Weighted&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Average&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Stock&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Price&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Restricted Stock Units as
 of December&amp;#xA0;31, 2017&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;52,224&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;36.22&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Restricted Stock Units
 Granted&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Dividend Equivalents
 Earned&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;453&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;42.04&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Restricted Stock Units
 Settled&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Restricted Stock Units as
 of March&amp;#xA0;31, 2018&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;52,677&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;36.27&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock>
  <us-gaap:SegmentReportingDisclosureTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_1CAD1A7C-3803-4318-A7EB-8C9ADE506EDA_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;NOTE 3 &amp;#x2013; SEGMENT
 INFORMATION&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following table
 provides significant segment financial data for the three months
 ended March&amp;#xA0;31, 2018 and March&amp;#xA0;31, 2017:&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="71%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="2%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Electric&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Non-&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Regulated&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Other&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1pt"&gt;
 &lt;td height="8"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 168pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three Months
 Ended March&amp;#xA0;31, 2018 ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Revenues:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Billed and Unbilled
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;91.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;61.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;153.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Rate Adjustment Mechanism
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(4.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(4.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(8.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other Operating Revenue
 &amp;#x2013; &lt;font style="WHITE-SPACE: nowrap"&gt;Non-Regulated&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="MARGIN-LEFT: 2em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Operating
 Revenues&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;87.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;57.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;145.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Segment Profit
 (Loss)&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;12.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;(0.4&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;)&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;15.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Identifiable Segment
 Assets&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;712.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;481.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;42.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1,244.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Capital
 Expenditures&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;6.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1pt"&gt;
 &lt;td height="8"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 168pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three Months
 Ended March&amp;#xA0;31, 2017 ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Revenues&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;74.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;49.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;126.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Segment Profit&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;12.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Identifiable Segment
 Assets&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;641.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;442.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;42.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,134.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Capital
 Expenditures&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;17.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1pt"&gt;
 &lt;td height="8"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="4"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 124pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;As of
 December&amp;#xA0;31, 2017 ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Identifiable Segment
 Assets&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;714.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;476.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;44.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,241.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:SegmentReportingDisclosureTextBlock>
  <us-gaap:StockIssuedDuringPeriodSharesNewIssues contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" unitRef="shares" decimals="INF" id="id_10140147_077B3FA4-7201-4CC9-86D4-6E0C5ACCEFE1_9003_7">7812</us-gaap:StockIssuedDuringPeriodSharesNewIssues>
  <us-gaap:SubsequentEventsPolicyPolicyTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_54624B59-2E16-4B78-B46A-6BFDFB91E1EB_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Subsequent Events&lt;/b&gt;
 &amp;#x2013; The Company evaluates all events or transactions through
 the date of the related filing. During the period through the date
 of this filing, the Company did not have any material subsequent
 events that would result in adjustment to or disclosure in its
 Consolidated Financial Statements.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:SubsequentEventsPolicyPolicyTextBlock>
  <us-gaap:TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_EDA0F0F4-09C9-420D-AFCC-D78EE6A2FCB1_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Accrued Revenue&lt;/b&gt;
 &amp;#x2013; Accrued Revenue includes the current portion of Regulatory
 Assets and unbilled revenues. The following table shows the
 components of Accrued Revenue as of March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="82%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 100pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Accrued
 Revenue ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Regulatory Assets &amp;#x2013;
 Current&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;34.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;32.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;39.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Unbilled
 Revenues&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;13.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Accrued
 Revenue&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;45.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;41.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;53.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</us-gaap:TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy>
  <us-gaap:UtilityRevenueAndExpenseRecognitionPolicy contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_6E75A74E-34BC-480C-9530-22EFAC36A425_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Utility Revenue
 Recognition &amp;#x2013;&lt;/b&gt; Gas Operating Revenues and Electric
 Operating Revenues consist of billed and unbilled revenue and
 revenue from rate adjustment mechanisms. Billed and unbilled
 revenue includes delivery revenue and pass-through revenue,
 recognized according to tariffs approved by federal and state
 regulatory commissions which determine the amount of revenue the
 Company will record for these items. Revenue from rate adjustment
 mechanisms is accrued revenue, recognized in connection with rate
 adjustment mechanisms, and authorized by regulators for recognition
 in the current period for future cash recoveries from, or credits
 to, customers.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Billed and unbilled revenue
 is recorded when service is rendered or energy is delivered to
 customers. However, the determination of energy sales to individual
 customers is based on the reading of their meters, which occurs on
 a systematic basis throughout the month. At the end of each
 calendar month, amounts of energy delivered to customers since the
 date of the last meter reading are estimated and the corresponding
 unbilled revenues are calculated. These unbilled revenues are
 calculated each month based on estimated customer usage by class
 and applicable customer rates and are then reversed in the
 following month when billed to customers.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In the first quarter of
 2018, the Company adopted Accounting Standards Update (ASU)
 &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09,&lt;/font&gt; and its
 subsequent clarifications and amendments outlined in ASU
 &lt;font style="WHITE-SPACE: nowrap"&gt;2015-14,&lt;/font&gt; ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2016-08,&lt;/font&gt; ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2016-10&lt;/font&gt; and ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2017-13,&lt;/font&gt; on a modified retrospective
 basis, which requires application to contracts with customers
 effective January&amp;#xA0;1, 2018, with the cumulative impact on
 contracts not yet completed as of December&amp;#xA0;31, 2017 recognized
 as an adjustment to the opening balance of Retained Earnings on the
 Company&amp;#x2019;s Consolidated Balance Sheets. There was no
 cumulative effect of adoption to be recognized as an adjustment to
 the opening balance of Retained Earnings on the Company&amp;#x2019;s
 Consolidated Balance Sheets. The adoption of this guidance did not
 have a material impact on the Consolidated Financial Statements as
 of the adoption date or for the three months ended March&amp;#xA0;31,
 2018. A majority of the Company&amp;#x2019;s revenue from contracts with
 customers continues to be recognized on a monthly basis based on
 applicable tariffs and customer monthly consumption. Such revenue
 is recognized using the invoice practical expedient which allows an
 entity to recognize revenue in the amount that directly corresponds
 to the value transferred to the customer.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As discussed below, the
 Company plans to disclose billed and unbilled revenue separately
 from rate adjustment mechanism revenue in the Notes to the
 Consolidated Financial Statements for periods in 2018 going
 forward, and will also provide this disclosure for prior periods
 for informational purposes.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company&amp;#x2019;s billed
 and unbilled revenue meets the definition of &amp;#x201C;revenues from
 contracts with customers&amp;#x201D; as defined in ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09.&lt;/font&gt; Revenue recognized in
 connection with rate adjustment mechanisms is consistent with the
 definition of alternative revenue programs in Accounting Standards
 Codification (ASC) &lt;font style="WHITE-SPACE: nowrap"&gt;&lt;font style="WHITE-SPACE: nowrap"&gt;&lt;font style="WHITE-SPACE: nowrap"&gt;980-605-25-3,&lt;/font&gt;&lt;/font&gt;&lt;/font&gt; as the
 Company has the ability to adjust rates in the future as a result
 of past activities or completed events. ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2014-09&lt;/font&gt; requires the Company to
 disclose separately the amount of revenues from contracts with
 customers and alternative revenue program revenues.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In the following tables,
 revenue is classified by the types of goods/services rendered and
 market/customer type. The lower revenues reported in the first
 quarter of 2018 to account for the reduction in the corporate
 income tax rate under the Tax Cuts and Jobs Act of 2017 (TCJA) are
 shown separately in the table below for informational
 purposes.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="78%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&amp;#xA0;March&amp;#xA0;31,&amp;#xA0;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 171pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas and
 Electric Operating Revenues ($ millions):&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Electric&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Billed and Unbilled
 Revenue:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Residential&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;35.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;34.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;70.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;C&amp;amp;I&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;50.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;24.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;74.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Revenue Reductions &amp;#x2013;
 TCJA&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(1.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(0.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(2.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 7em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Billed and Unbilled
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;91.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;61.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;153.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Rate Adjustment Mechanism
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(4.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(4.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(8.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Gas and Electric
 Operating Revenues&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;87.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;57.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;144.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1pt"&gt;
 &lt;td height="16"&gt;&lt;/td&gt;
 &lt;td height="16" colspan="12"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&amp;#xA0;March&amp;#xA0;31,&amp;#xA0;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 171pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas and
 Electric Operating Revenues ($ millions):&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Electric&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Billed and Unbilled
 Revenue:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Residential&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;30.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;27.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;58.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;C&amp;amp;I&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;42.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;19.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;61.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 7em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Billed and Unbilled
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;78.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;49.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;127.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Rate Adjustment Mechanism
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(4.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(3.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Gas and Electric
 Operating Revenues&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;74.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;49.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;124.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Fitchburg is subject to
 revenue decoupling. Revenue decoupling is the term given to the
 elimination of the dependency of a utility&amp;#x2019;s distribution
 revenue on the volume of electricity or natural gas sales. The
 difference between distribution revenue amounts billed to customers
 and the targeted revenue decoupling amounts is recorded as an
 increase or a decrease in Accrued Revenue, which forms the basis
 for resetting rates for future cash recoveries from, or credits to,
 customers. These revenue decoupling targets may be adjusted as a
 result of rate cases that the Company files with the MDPU. The
 Company estimates that revenue decoupling applies to approximately
 27% and 11% of Unitil&amp;#x2019;s total annual electric and natural gas
 sales volumes, respectively.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</us-gaap:UtilityRevenueAndExpenseRecognitionPolicy>
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 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Allowance for Doubtful
 Accounts as of March&amp;#xA0;31, 2018, March&amp;#xA0;31, 2017 and
 December&amp;#xA0;31, 2017, which are included in Accounts Receivable,
 net on the accompanying unaudited consolidated balance sheets, was
 as follows:&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="82%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;($
 millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="10"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Allowance for Doubtful
 Accounts&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
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 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</utl:AllowanceForDoubtfulAccountsTableTextBlock>
  <utl:ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" unitRef="iso4217_USD" decimals="-5" id="id_10140147_E0F51C80-E4AF-456B-9C47-E92CF99F90FB_1_21">-800000</utl:ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations>
  <utl:ChangeInDeferredRegulatoryAndOtherCharges contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" unitRef="iso4217_USD" decimals="-5" id="id_10140147_E0F51C80-E4AF-456B-9C47-E92CF99F90FB_1_12">-7900000</utl:ChangeInDeferredRegulatoryAndOtherCharges>
  <utl:PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCashWhenSettled contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" unitRef="pure" decimals="2" id="id_10140147_E4CBCB96-718F-430B-B1A4-2ABD5FA6EDCD_1_1">0.30</utl:PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCashWhenSettled>
  <utl:NatureOfOperationsPolicyTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_11709EEE-5DEF-4F96-BD23-9424A94D5D5D_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Nature of Operations&lt;/b&gt;
 &amp;#x2013; Unitil Corporation (Unitil or the Company) is a public
 utility holding company. Unitil and its subsidiaries are subject to
 regulation as a holding company system by the Federal Energy
 Regulatory Commission (FERC) under the Energy Policy Act of 2005.
 The following companies are wholly-owned subsidiaries of Unitil:
 Unitil Energy Systems, Inc. (Unitil Energy), Fitchburg Gas and
 Electric Light Company (Fitchburg), Northern Utilities, Inc.
 (Northern Utilities), Granite State Gas Transmission, Inc. (Granite
 State), Unitil Power Corp. (Unitil Power), Unitil Realty Corp.
 (Unitil Realty), Unitil Service Corp. (Unitil Service) and its
 &lt;font style="WHITE-SPACE: nowrap"&gt;non-regulated&lt;/font&gt; business
 unit Unitil Resources, Inc. (Unitil Resources). Usource Inc. and
 Usource L.L.C. are subsidiaries of Unitil Resources.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company&amp;#x2019;s
 earnings are seasonal and are typically higher in the first and
 fourth quarters when customers use natural gas for heating
 purposes.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Unitil&amp;#x2019;s principal
 business is the local distribution of electricity in the
 southeastern seacoast and state capital regions of New Hampshire
 and the greater Fitchburg area of north central Massachusetts, and
 the local distribution of natural gas in southeastern New
 Hampshire, portions of southern and central Maine and in the
 greater Fitchburg area of north central Massachusetts. Unitil has
 three distribution utility subsidiaries, Unitil Energy, which
 operates in New Hampshire, Fitchburg, which operates in
 Massachusetts and Northern Utilities, which operates in New
 Hampshire and Maine (collectively referred to as the distribution
 utilities).&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Granite State is a natural
 gas transportation pipeline, operating 86 miles of underground gas
 transmission pipeline primarily located in Maine and New Hampshire.
 Granite State provides Northern Utilities with interconnection to
 three major natural gas pipelines and access to domestic natural
 gas supplies in the south and Canadian natural gas supplies in the
 north. Granite State derives its revenues principally from the
 transportation services provided to Northern Utilities and, to a
 lesser extent, third-party marketers.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;A fifth utility subsidiary,
 Unitil Power, formerly functioned as the full requirements
 wholesale power supply provider for Unitil Energy. In connection
 with the implementation of electric industry restructuring in New
 Hampshire, Unitil Power ceased being the wholesale supplier of
 Unitil Energy on May&amp;#xA0;1, 2003 and divested of its long-term
 power supply contracts through the sale of the entitlements to the
 electricity associated with various electric power supply contracts
 it had acquired to serve Unitil Energy&amp;#x2019;s
 customers.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Unitil also has three other
 wholly-owned subsidiaries: Unitil Service; Unitil Realty; and
 Unitil Resources. Unitil Service provides, at cost, a variety of
 administrative and professional services, including regulatory,
 financial, accounting, human resources, engineering, operations,
 technology, energy management and management services on a
 centralized basis to its affiliated Unitil companies. Unitil Realty
 owns and manages the Company&amp;#x2019;s corporate office in Hampton,
 New Hampshire and leases this facility to Unitil Service under a
 long-term lease arrangement. Unitil Resources is the
 Company&amp;#x2019;s wholly-owned &lt;font style="WHITE-SPACE: nowrap"&gt;non-regulated&lt;/font&gt; subsidiary. Usource,
 Inc. and Usource L.L.C. (collectively, Usource) are wholly-owned
 subsidiaries of Unitil Resources. Usource provides brokering and
 advisory services to large commercial and industrial customers in
 the northeastern United States.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</utl:NatureOfOperationsPolicyTextBlock>
  <utl:UnbilledAccountsReceivableTableTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_EC9B8532-4626-4779-BFAF-01F87C2E6F46_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following table shows
 the components of Accrued Revenue as of March&amp;#xA0;31, 2018,
 March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="82%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 100pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Accrued
 Revenue ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Regulatory Assets &amp;#x2013;
 Current&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;34.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;32.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;39.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Unbilled
 Revenues&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;13.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Accrued
 Revenue&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;45.1&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;41.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;53.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</utl:UnbilledAccountsReceivableTableTextBlock>
  <utl:AllowanceForDoubtfulAccountsPolicyTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_431FA7AF-E1AE-48A9-9207-E98F5758E67F_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Allowance for Doubtful
 Accounts &amp;#x2013;&lt;/b&gt; The Company recognizes a provision for
 doubtful accounts each month based upon the Company&amp;#x2019;s
 experience in collecting electric and gas utility service accounts
 receivable in prior years. At the end of each month, an analysis of
 the delinquent receivables is performed which takes into account an
 assumption about the cash recovery of delinquent receivables. The
 analysis also calculates the amount of &lt;font style="WHITE-SPACE: nowrap"&gt;written-off&lt;/font&gt; receivables that are
 recoverable through regulatory rate reconciling mechanisms. The
 Company&amp;#x2019;s distribution utilities are authorized by regulators
 to recover the costs of their energy commodity portion of bad debts
 through rate mechanisms. Also, the electric and gas divisions of
 Fitchburg are authorized to recover through rates past due amounts
 associated with hardship accounts that are protected from
 &lt;font style="WHITE-SPACE: nowrap"&gt;shut-off.&lt;/font&gt; Evaluating the
 adequacy of the Allowance for Doubtful Accounts requires judgment
 about the assumptions used in the analysis. It has been the
 Company&amp;#x2019;s experience that the assumptions it has used in
 evaluating the adequacy of the Allowance for Doubtful Accounts have
 proven to be reasonably accurate.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Allowance for Doubtful
 Accounts as of March&amp;#xA0;31, 2018, March&amp;#xA0;31, 2017 and
 December&amp;#xA0;31, 2017, which are included in Accounts Receivable,
 net on the accompanying unaudited consolidated balance sheets, was
 as follows:&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="82%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;($
 millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" colspan="10"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Allowance for Doubtful
 Accounts&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</utl:AllowanceForDoubtfulAccountsPolicyTextBlock>
  <utl:PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCommonSharesWhenSettled contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" unitRef="pure" decimals="2" id="id_10140147_E4CBCB96-718F-430B-B1A4-2ABD5FA6EDCD_1_0">0.70</utl:PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCommonSharesWhenSettled>
  <utl:DisclosureOfDividendsDeclaredAndPaidTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_7551FC38-5CFA-43A8-8F28-39C57073DC6B_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;NOTE 2 &amp;#x2013; DIVIDENDS
 DECLARED PER SHARE&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="92%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="28%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="18%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="18%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="18%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="center"&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Declaration&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 1px; WIDTH: 39pt; BORDER-BOTTOM: #000000 1px solid; MARGIN-TOP: 0px; DISPLAY: inline" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Date&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Date&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Paid
 (Payable)&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Shareholder&amp;#xA0;of&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Record&amp;#xA0;Date&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Dividend&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Amount&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top" align="center"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;04/25/18&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;05/29/18&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;05/15/18&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$0.365&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top" align="center"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;01/30/18&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;02/28/18&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;02/14/18&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$0.365&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1pt"&gt;
 &lt;td height="8"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="2"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="2"&gt;&lt;/td&gt;
 &lt;td height="8" colspan="2"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top" align="center"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10/25/17&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;11/29/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;11/15/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$0.360&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top" align="center"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;07/26/17&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;08/29/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;08/15/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$0.360&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top" align="center"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;04/26/17&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;05/30/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;05/16/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$0.360&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top" align="center"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;01/25/17&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;02/28/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;02/14/17&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$0.360&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</utl:DisclosureOfDividendsDeclaredAndPaidTextBlock>
  <utl:ScheduleOfOtherAccountsReceivableTableTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_C6A94745-15E7-486E-BC64-AB1E8ACF4B69_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following table shows
 the components of Exchange Gas Receivable as of March&amp;#xA0;31,
 2018, March&amp;#xA0;31, 2017 and December&amp;#xA0;31, 2017.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="81%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 127pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Exchange Gas
 Receivable ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Northern
 Utilities&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Fitchburg&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Exchange Gas
 Receivable&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.2&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/div&gt;</utl:ScheduleOfOtherAccountsReceivableTableTextBlock>
  <utl:RecentlyIssuedAccountingPronouncementsPolicyTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_82A68C1E-CDA1-4CFC-AAF0-73B3875A2015_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Recently Issued
 Pronouncements&lt;/b&gt; &amp;#x2013; In March 2017, the FASB issued ASU
 &lt;font style="WHITE-SPACE: nowrap"&gt;No.&amp;#xA0;2017-07,&lt;/font&gt;
 &amp;#x201C;Compensation &amp;#x2013; Retirement Benefits (Topic 715) which
 amends the existing guidance relating to the presentation of net
 periodic pension cost and net periodic other post-retirement
 benefit costs. On a retrospective basis, the amendment requires an
 employer to separate the service cost component from the other
 components of net benefit cost and provides explicit guidance on
 how to present the service cost component and other components in
 the income statement. In addition, on a prospective basis, the ASU
 limits the component of net benefit cost eligible to be capitalized
 to service costs. The ASU became effective for the Company on
 January&amp;#xA0;1, 2018. The change in capitalization of retirement
 benefits did not have a material impact on the Company&amp;#x2019;s
 Consolidated Financial Statements.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 6px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In May 2014, the FASB
 issued ASU &lt;font style="WHITE-SPACE: nowrap"&gt;No.&amp;#xA0;2014-09,&lt;/font&gt; &amp;#x201C;Revenue from
 Contracts with Customers (Topic 606)&amp;#x201D;, which amends existing
 revenue recognition guidance, effective January&amp;#xA0;1, 2018. The
 objective of the new standard is to provide a single, comprehensive
 revenue recognition model for all contracts with customers to
 improve comparability across entities, industries, jurisdictions,
 and capital markets and to provide more useful information to users
 of financial statements through improved and expanded disclosure
 requirements.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The majority of the
 Company&amp;#x2019;s revenue, including energy provided to customers, is
 from tariff offerings that provide natural gas or electricity
 without a defined contractual term. For such arrangements, the
 Company generally expects that the revenue from contracts with
 these customers will continue to be equivalent to the electricity
 or natural gas supplied and billed in that period (including
 unbilled revenues) and the adoption of the new guidance will not
 result in a significant shift in the timing of revenue recognition
 for such sales.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company used the
 modified retrospective method when adopting the new standard on
 January&amp;#xA0;1, 2018. The new guidance did not have a material
 impact to the Consolidated Financial Statements. (See
 &amp;#x201C;Utility Revenue Recognition&amp;#x201D; and &amp;#x201C;Other
 Operating Revenue &amp;#x2013; &lt;font style="WHITE-SPACE: nowrap"&gt;Non-regulated&amp;#x201D;&lt;/font&gt;
 above.)&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In February 2016, the FASB
 issued ASU &lt;font style="WHITE-SPACE: nowrap"&gt;2016-02,&lt;/font&gt;
 Leases, Topic 842, which amends the existing guidance relating to
 the definition of a lease, recognition of lease assets and lease
 liabilities on the balance sheet, and the disclosure of key
 information about leasing arrangements.&amp;#xA0;In November 2017, the
 FASB tentatively decided to amend the new leasing guidance such
 that entities may elect not to restate their comparative periods in
 the period of adoption. Under the new standard, all lessees must
 recognize an asset and liability on the balance sheet. Operating
 leases were previously not recognized on the balance
 sheet.&amp;#xA0;The ASU will be effective for the Company on
 January&amp;#xA0;1, 2019, with early adoption permitted. The Company
 plans to adopt this guidance in the first quarter of 2019.&amp;#xA0;The
 Company expects this ASU to increase lease assets and lease
 liabilities on the Consolidated Balance Sheets and does not expect
 the guidance will have a material impact on the Consolidated
 Statements of Income, Statements of Cash Flows and lease
 disclosures.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In January 2016, the FASB
 issued Accounting Standards Update (ASU) &lt;font style="WHITE-SPACE: nowrap"&gt;2016-01&lt;/font&gt; which addresses certain
 aspects of recognition, measurement, presentation and disclosure of
 financial instruments. A financial instrument is defined as cash,
 evidence of ownership interest in a company or other entity, or a
 contract that both: (i)&amp;#xA0;imposes on one entity a contractual
 obligation either to deliver cash or another financial instrument
 to a second entity or to exchange other financial instruments on
 potentially unfavorable terms with the second entity and
 (ii)&amp;#xA0;conveys to that second entity a contractual right either
 to receive cash or another financial instruments from the first
 entity or to exchange other financial instruments on potentially
 favorable terms with the first entity. The ASU became effective for
 the Company on January&amp;#xA0;1, 2018 and it did not have a material
 impact on the Company&amp;#x2019;s Consolidated Financial
 Statements.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other than the
 pronouncements discussed above, there are no recently issued
 pronouncements that the Company has not already adopted or that
 have a material impact on the Company.&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</utl:RecentlyIssuedAccountingPronouncementsPolicyTextBlock>
  <utl:IncreaseDecreaseInGasInventoryFinancing contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" unitRef="iso4217_USD" decimals="-5" id="id_10140147_E0F51C80-E4AF-456B-9C47-E92CF99F90FB_1_22">-5400000</utl:IncreaseDecreaseInGasInventoryFinancing>
  <utl:SupplyCommitmentPolicyTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_667DF812-97B0-4170-B61D-1AEBA05A548F_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Energy Supply
 Obligations &amp;#x2013;&lt;/b&gt; The following discussion and table
 summarize the nature and amounts of the items recorded as Energy
 Supply Obligations (current portion) and Other Noncurrent
 Liabilities (noncurrent portion) on the Company&amp;#x2019;s
 Consolidated Balance Sheets.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="80%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 132pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Energy
 Supply Obligations ($ millions)&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Current:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Exchange Gas
 Obligation&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Renewable Energy Portfolio
 Standards&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Power Supply Contract
 Divestitures&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.3&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Energy Supply
 Obligations &amp;#x2013; Current&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;9.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Long-Term:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Power Supply Contract
 Divestitures&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;0.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Energy Supply
 Obligations&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;8.6&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;/table&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Exchange Gas Obligation
 &amp;#x2013; As discussed above, Northern Utilities enters into gas
 exchange agreements under which Northern Utilities releases certain
 natural gas pipeline and storage assets, resells the natural gas
 storage inventory to an asset manager and subsequently repurchases
 the inventory over the course of the natural gas heating season at
 the same price at which it sold the natural gas inventory to the
 asset manager. The gas inventory related to these agreements is
 recorded in Exchange Gas Receivable on the Company&amp;#x2019;s
 Consolidated Balance Sheets while the corresponding obligations are
 recorded in Energy Supply Obligations.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Renewable Energy Portfolio
 Standards &amp;#x2013; Renewable Energy Portfolio Standards (RPS)
 require retail electricity suppliers, including public utilities,
 to demonstrate that required percentages of their sales are met
 with power generated from certain types of resources or
 technologies. Compliance is demonstrated by purchasing and retiring
 Renewable Energy Certificates (REC) generated by facilities
 approved by the state as qualifying for REC treatment. Unitil
 Energy and Fitchburg purchase RECs in compliance with RPS
 legislation in New Hampshire and Massachusetts for supply provided
 to default service customers. RPS compliance costs are a supply
 cost that is recovered in customer default service rates. Unitil
 Energy and Fitchburg collect RPS compliance costs from customers
 throughout the year and demonstrate compliance for each calendar
 year on the following July 1. Due to timing differences between
 collection of revenue from customers and payment of REC costs to
 suppliers, Unitil Energy and Fitchburg typically maintain accrued
 revenue for RPS compliance which is recorded in Accrued Revenue
 with a corresponding liability in Energy Supply Obligations on the
 Company&amp;#x2019;s Consolidated Balance Sheets.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Fitchburg has entered into
 long-term renewable contracts for electric energy and/or renewable
 energy credits pursuant to Massachusetts legislation, specifically,
 the Act Relative to Green Communities of 2008 and the Act Relative
 to Competitively Priced Electricity (2012)&amp;#xA0;in the
 Commonwealth, and the MDPU&amp;#x2019;s regulations implementing the
 legislation. The generating facilities associated with three of
 these contracts have been constructed and are operating. A recent
 round of long-term renewable energy procurements was conducted
 during 2016 and several contracts were finalized and submitted to
 MDPU for approval in 2017. These approvals remain pending.
 Additional procurements are expected in compliance with the Act to
 Promote Energy Diversity (2016). Fitchburg recovers the costs
 associated with long-term renewable contracts on a fully
 reconciling basis through a MDPU-approved cost recovery
 mechanism.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Power Supply Contract
 Divestitures &amp;#x2013; Unitil Energy&amp;#x2019;s and Fitchburg&amp;#x2019;s
 customers are entitled to purchase their electric or natural gas
 supplies from third-party suppliers. In connection with the
 implementation of retail choice, Unitil Power, which formerly
 functioned as the wholesale power supply provider for Unitil
 Energy, and Fitchburg divested their long-term power supply
 contracts through the sale of the entitlements to the electricity
 sold under those contracts. Unitil Energy and Fitchburg recover in
 their rates all the costs associated with the divestiture of their
 power supply portfolios and have secured regulatory approval from
 the NHPUC and MDPU, respectively, for the recovery of power
 supply-related stranded costs. The obligations related to these
 divestitures are recorded in Energy Supply Obligations (current
 portion) and Other Noncurrent Liabilities (noncurrent portion) on
 the Company&amp;#x2019;s Consolidated Balance Sheets with corresponding
 regulatory assets recorded in Accrued Revenue (current portion) and
 Regulatory Assets (noncurrent portion).&lt;/font&gt;&lt;/p&gt;
 &lt;/div&gt;</utl:SupplyCommitmentPolicyTextBlock>
  <utl:LengthOfPipeline contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" unitRef="mi" decimals="0" id="id_10140147_C8095219-20AE-4298-8C93-8FB7BC24E384_1_0">86</utl:LengthOfPipeline>
  <utl:ComponentsOfGasOperatingRevenueAndElectricOperatingRevenueTableTextBlock contextRef="eol_PE1985----1810-Q0007_STD_90_20180331_0" id="id_10140147_D9324E0F-3266-409F-944E-2E72C7B2A47F_1_0">&lt;div&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In the following tables,
 revenue is classified by the types of goods/services rendered and
 market/customer type. The lower revenues reported in the first
 quarter of 2018 to account for the reduction in the corporate
 income tax rate under the Tax Cuts and Jobs Act of 2017 (TCJA) are
 shown separately in the table below for informational
 purposes.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px"&gt;
 &amp;#xA0;&lt;/p&gt;
 &lt;table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"&gt;
 &lt;tr&gt;
 &lt;td width="78%"&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;td&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&amp;#xA0;March&amp;#xA0;31,&amp;#xA0;2018&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 171pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas and
 Electric Operating Revenues ($ millions):&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Electric&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Billed and Unbilled
 Revenue:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Residential&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;35.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;34.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;70.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;C&amp;amp;I&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;50.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;24.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;74.7&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Revenue Reductions &amp;#x2013;
 TCJA&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(1.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(0.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(2.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 7em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Billed and Unbilled
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;91.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;61.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;153.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Rate Adjustment Mechanism
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(4.4&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(4.1&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(8.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Gas and Electric
 Operating Revenues&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;87.0&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;57.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;144.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1pt"&gt;
 &lt;td height="16"&gt;&lt;/td&gt;
 &lt;td height="16" colspan="12"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&amp;#xA0;March&amp;#xA0;31,&amp;#xA0;2017&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;
 &lt;p style="WIDTH: 171pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas and
 Electric Operating Revenues ($ millions):&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gas&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Electric&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Billed and Unbilled
 Revenue:&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Residential&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;30.9&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;27.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;58.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;C&amp;amp;I&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;42.3&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;19.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;61.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.6&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.2&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 7em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total Billed and Unbilled
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;78.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;49.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;127.8&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Rate Adjustment Mechanism
 Revenue&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(4.0&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(3.5&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="FONT-SIZE: 1px"&gt;
 &lt;td valign="bottom"&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;
 &lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td&gt;&amp;#xA0;&lt;/td&gt;
 &lt;/tr&gt;
 &lt;tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF"&gt;
 &lt;td valign="top"&gt;
 &lt;p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Total Gas and Electric
 Operating Revenues&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;74.8&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;49.5&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;&amp;#xA0;&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
 &lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;$&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
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        <link:definition>150 - Disclosure - Key Weighted Average Assumptions Used in Determining Benefit Plan Costs and Obligations (Detail)</link:definition>
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</schema>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.CAL
<SEQUENCE>10
<FILENAME>utl-20180331_cal.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="US-ASCII"?>
<!-- DFS Xcelerate Taxonomy Calculation Linkbase - http://www.dfsco.com/financial-services/ -->
<!-- Version: 6.23.6 -->
<!-- Round: 3 -->
<!-- Creation date: 2018-04-25T19:22:44Z -->
<!-- Copyright (c) 2017 Donnelley Financial, LLC. All Rights Reserved. -->
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<DOCUMENT>
<TYPE>EX-101.DEF
<SEQUENCE>11
<FILENAME>utl-20180331_def.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE
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<!-- Round: 3 -->
<!-- Creation date: 2018-04-25T19:22:44Z -->
<!-- Copyright (c) 2017 Donnelley Financial, LLC. All Rights Reserved. -->
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock" xlink:label="us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_ScheduleOfAssumptionsUsedTableTextBlock" order="1.0200" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock" order="1.0300" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_StatementTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/>
  </definitionLink>
</linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>12
<FILENAME>utl-20180331_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="US-ASCII"?>
<!-- DFS Xcelerate Taxonomy Labels Linkbase - http://www.dfsco.com/financial-services/ -->
<!-- Version: 6.23.6 -->
<!-- Round: 3 -->
<!-- Creation date: 2018-04-25T19:22:44Z -->
<!-- Copyright (c) 2017 Donnelley Financial, LLC. All Rights Reserved. -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" roleURI="http://www.xbrl.org/2009/role/negatedLabel"/>
  <labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="us-gaap_AccountingPoliciesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xml:lang="en-US" id="id_10140147_1547540_1_1">Accounting Policies [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xml:lang="en-US" id="id_10140147_1547540_2_1">Accounting Policies [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_AccountingPoliciesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:label="us-gaap_AccountingStandardsUpdate201409Member"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountingStandardsUpdate201409Member_lbl" xml:lang="en-US" id="id_10140147_1550772_1_1">Accounting Standards Update 2014-09 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountingStandardsUpdate201409Member_lbl" xml:lang="en-US" id="id_10140147_1550772_2_1">ASU 2014-09</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingStandardsUpdate201409Member" xlink:to="us-gaap_AccountingStandardsUpdate201409Member_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis_lbl" xml:lang="en-US" id="id_10140147_1554108_1_1">Billing Status, Type [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis_lbl" xml:lang="en-US" id="id_10140147_1554108_2_1">Billing Status, Type</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis" xlink:to="us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="us-gaap_AccountsPayableCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xml:lang="en-US" id="id_10140147_1561615_1_1">Accounts Payable, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xml:lang="en-US" id="id_10140147_1561615_2_1">Accounts Payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="us-gaap_AccountsPayableCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="us-gaap_AccountsReceivableNetCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xml:lang="en-US" id="id_10140147_1566227_1_1">Accounts Receivable, Net, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xml:lang="en-US" id="id_10140147_1566227_2_1">Accounts Receivable, net</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsReceivableNetCurrent" xlink:to="us-gaap_AccountsReceivableNetCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingencies" xlink:label="us-gaap_AccrualForEnvironmentalLossContingencies"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccrualForEnvironmentalLossContingencies_lbl" xml:lang="en-US" id="id_10140147_1561613_1_1">Accrual for Environmental Loss Contingencies</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_AccrualForEnvironmentalLossContingencies_lbl" xml:lang="en-US" id="id_10140147_1561613_4_1">Total Balance at End of Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_AccrualForEnvironmentalLossContingencies_lbl" xml:lang="en-US" id="id_10140147_1561613_5_1">Total Balance at Beginning of Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AccrualForEnvironmentalLossContingencies_lbl" xml:lang="en-US" id="id_10140147_1561613_6_1">Total Balance at End of period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccrualForEnvironmentalLossContingencies" xlink:to="us-gaap_AccrualForEnvironmentalLossContingencies_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses" xlink:label="us-gaap_AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses_lbl" xml:lang="en-US" id="id_10140147_1567242_1_1">Accrual for Environmental Loss Contingencies, Charges to Expense for New Losses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses_lbl" xml:lang="en-US" id="id_10140147_1567242_2_1">Additions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses" xlink:to="us-gaap_AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesPayments1" xlink:label="us-gaap_AccrualForEnvironmentalLossContingenciesPayments1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccrualForEnvironmentalLossContingenciesPayments1_lbl" xml:lang="en-US" id="id_10140147_1563348_1_1">Accrual for Environmental Loss Contingencies, Payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccrualForEnvironmentalLossContingenciesPayments1_lbl" xml:lang="en-US" id="id_10140147_1563348_2_1">Less: Payments / Reductions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccrualForEnvironmentalLossContingenciesPayments1" xlink:to="us-gaap_AccrualForEnvironmentalLossContingenciesPayments1_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccruedEnvironmentalLossContingenciesCurrent" xlink:label="us-gaap_AccruedEnvironmentalLossContingenciesCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedEnvironmentalLossContingenciesCurrent_lbl" xml:lang="en-US" id="id_10140147_1564269_1_1">Accrued Environmental Loss Contingencies, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccruedEnvironmentalLossContingenciesCurrent_lbl" xml:lang="en-US" id="id_10140147_1564269_2_1">Environmental Obligations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AccruedEnvironmentalLossContingenciesCurrent_lbl" xml:lang="en-US" id="id_10140147_1564269_12_1">Less: Current Portion</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedEnvironmentalLossContingenciesCurrent" xlink:to="us-gaap_AccruedEnvironmentalLossContingenciesCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent" xlink:label="us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1564270_1_1">Accrued Environmental Loss Contingencies, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1564270_2_1">Environmental Obligations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1564270_12_1">Noncurrent Balance</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent" xlink:to="us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xml:lang="en-US" id="id_10140147_1547580_1_1">Adjustments for New Accounting Pronouncements [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xml:lang="en-US" id="id_10140147_1547580_2_1">Adjustments for New Accounting Pronouncements [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:to="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_10140147_1557449_1_1">Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_10140147_1557449_2_1">Adjustments to Reconcile Net Income to Cash Provided by Operating Activities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllOtherSegmentsMember" xlink:label="us-gaap_AllOtherSegmentsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllOtherSegmentsMember_lbl" xml:lang="en-US" id="id_10140147_1554161_1_1">Other Segments [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AllOtherSegmentsMember_lbl" xml:lang="en-US" id="id_10140147_1554161_2_1">All Other Segments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllOtherSegmentsMember" xlink:to="us-gaap_AllOtherSegmentsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_AllowanceForDoubtfulAccountsPolicyTextBlock" xlink:label="utl_AllowanceForDoubtfulAccountsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_AllowanceForDoubtfulAccountsPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1673800_3_1">Allowance For Doubtful Accounts, Policy.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_AllowanceForDoubtfulAccountsPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1673800_1_1">Allowance For Doubtful Accounts [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_AllowanceForDoubtfulAccountsPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1673800_2_1">Allowance for Doubtful Accounts</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_AllowanceForDoubtfulAccountsPolicyTextBlock" xlink:to="utl_AllowanceForDoubtfulAccountsPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xml:lang="en-US" id="id_10140147_1564248_1_1">Allowance for Doubtful Accounts Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xml:lang="en-US" id="id_10140147_1564248_2_1">Allowance for Doubtful Accounts</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_AllowanceForDoubtfulAccountsTableTextBlock" xlink:label="utl_AllowanceForDoubtfulAccountsTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_AllowanceForDoubtfulAccountsTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1570860_3_1">Allowance for Doubtful Accounts, Table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_AllowanceForDoubtfulAccountsTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1570860_1_1">Allowance for Doubtful Accounts [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_AllowanceForDoubtfulAccountsTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1570860_2_1">Allowance for Doubtful Accounts Included in Accounts Receivable Net</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_AllowanceForDoubtfulAccountsTableTextBlock" xlink:to="utl_AllowanceForDoubtfulAccountsTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_AmendmentEffectiveDate" xlink:label="utl_AmendmentEffectiveDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_AmendmentEffectiveDate_lbl" xml:lang="en-US" id="id_10140147_1666318_3_1">Effective date of rates resulting from rate case.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_AmendmentEffectiveDate_lbl" xml:lang="en-US" id="id_10140147_1666318_1_1">Amendment Effective Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_AmendmentEffectiveDate_lbl" xml:lang="en-US" id="id_10140147_1666318_2_1">Amendment effective date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_AmendmentEffectiveDate" xlink:to="utl_AmendmentEffectiveDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_AmendmentFlag" xlink:label="dei_AmendmentFlag"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AmendmentFlag_lbl" xml:lang="en-US" id="id_10140147_1550846_1_1">Amendment Flag</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetRecoveryDamagedPropertyCostsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1565297_1_1">Asset Recovery Damaged Property Costs, Noncurrent</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetRetirementObligationsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1564237_1_1">Asset Retirement Obligations, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetRetirementObligationsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1564237_2_1">Cost of removal obligation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AssetRetirementObligationsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1564237_12_1">Cost of Removal Obligations</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US" id="id_10140147_1567275_1_1">Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US" id="id_10140147_1567275_2_1">Identifiable Segment Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US" id="id_10140147_1567275_6_1">TOTAL ASSETS</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="us-gaap_AssetsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US" id="id_10140147_1547646_1_1">Assets [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US" id="id_10140147_1547646_2_1">ASSETS:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="us-gaap_AssetsCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsCurrent_lbl" xml:lang="en-US" id="id_10140147_1564321_1_1">Assets, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AssetsCurrent_lbl" xml:lang="en-US" id="id_10140147_1564321_6_1">Total Current Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="us-gaap_AssetsCurrentAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xml:lang="en-US" id="id_10140147_1557502_1_1">Assets, Current [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xml:lang="en-US" id="id_10140147_1557502_2_1">Current Assets:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrentAbstract" xlink:to="us-gaap_AssetsCurrentAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsNoncurrent" xlink:label="us-gaap_AssetsNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1566282_1_1">Assets, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AssetsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1566282_6_1">Total Other Noncurrent Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsNoncurrent" xlink:to="us-gaap_AssetsNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsNoncurrentAbstract" xlink:label="us-gaap_AssetsNoncurrentAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsNoncurrentAbstract_lbl" xml:lang="en-US" id="id_10140147_1547661_1_1">Assets, Noncurrent [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetsNoncurrentAbstract_lbl" xml:lang="en-US" id="id_10140147_1547661_2_1">Other Noncurrent Assets:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsNoncurrentAbstract" xlink:to="us-gaap_AssetsNoncurrentAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="us-gaap_AwardTypeAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AwardTypeAxis_lbl" xml:lang="en-US" id="id_10140147_1547686_1_1">Award Type [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AwardTypeAxis_lbl" xml:lang="en-US" id="id_10140147_1547686_2_1">Award Type</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_AwardTypeAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="us-gaap_BalanceSheetLocationAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xml:lang="en-US" id="id_10140147_1550919_1_1">Balance Sheet Location [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xml:lang="en-US" id="id_10140147_1550919_2_1">Balance Sheet Location</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BalanceSheetLocationAxis" xlink:to="us-gaap_BalanceSheetLocationAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="us-gaap_BalanceSheetLocationDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xml:lang="en-US" id="id_10140147_1547693_1_1">Balance Sheet Location [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xml:lang="en-US" id="id_10140147_1547693_2_1">Balance Sheet Location [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BalanceSheetLocationDomain" xlink:to="us-gaap_BalanceSheetLocationDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1557553_1_1">Basis of Accounting, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1557553_2_1">Basis of Presentation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:to="us-gaap_BasisOfAccountingPolicyPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_BenefitPlanCostsMember" xlink:label="utl_BenefitPlanCostsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_BenefitPlanCostsMember_lbl" xml:lang="en-US" id="id_10140147_1656312_3_1">Benefit Plan Costs [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_BenefitPlanCostsMember_lbl" xml:lang="en-US" id="id_10140147_1656312_1_1">Benefit Plan Costs [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_BenefitPlanCostsMember_lbl" xml:lang="en-US" id="id_10140147_1656312_2_1">Benefit Plan Costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_BenefitPlanCostsMember" xlink:to="utl_BenefitPlanCostsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_BilledAndUnbilledRevenueMember" xlink:label="utl_BilledAndUnbilledRevenueMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_BilledAndUnbilledRevenueMember_lbl" xml:lang="en-US" id="id_10140147_1772803_3_1">Billed and unbilled revenue.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_BilledAndUnbilledRevenueMember_lbl" xml:lang="en-US" id="id_10140147_1772803_1_1">Billed And Unbilled Revenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_BilledAndUnbilledRevenueMember_lbl" xml:lang="en-US" id="id_10140147_1772803_2_1">Billed and Unbilled Revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_BilledAndUnbilledRevenueMember" xlink:to="utl_BilledAndUnbilledRevenueMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CapitalExpendituresIncurredButNotYetPaid" xlink:label="us-gaap_CapitalExpendituresIncurredButNotYetPaid"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalExpendituresIncurredButNotYetPaid_lbl" xml:lang="en-US" id="id_10140147_1564200_1_1">Capital Expenditures Incurred but Not yet Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CapitalExpendituresIncurredButNotYetPaid_lbl" xml:lang="en-US" id="id_10140147_1564200_2_1">Capital Expenditures Included in Accounts Payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalExpendituresIncurredButNotYetPaid" xlink:to="us-gaap_CapitalExpendituresIncurredButNotYetPaid_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CapitalizationLongtermDebtAndEquity" xlink:label="us-gaap_CapitalizationLongtermDebtAndEquity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalizationLongtermDebtAndEquity_lbl" xml:lang="en-US" id="id_10140147_1561528_1_1">Capitalization, Long-term Debt and Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CapitalizationLongtermDebtAndEquity_lbl" xml:lang="en-US" id="id_10140147_1561528_6_1">Total Capitalization</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalizationLongtermDebtAndEquity" xlink:to="us-gaap_CapitalizationLongtermDebtAndEquity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CapitalizationLongtermDebtAndEquityAbstract" xlink:label="us-gaap_CapitalizationLongtermDebtAndEquityAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalizationLongtermDebtAndEquityAbstract_lbl" xml:lang="en-US" id="id_10140147_1547783_1_1">Capitalization, Long-term Debt and Equity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CapitalizationLongtermDebtAndEquityAbstract_lbl" xml:lang="en-US" id="id_10140147_1547783_2_1">Capitalization:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalizationLongtermDebtAndEquityAbstract" xlink:to="us-gaap_CapitalizationLongtermDebtAndEquityAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CapitalLeaseObligations" xlink:label="us-gaap_CapitalLeaseObligations"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalLeaseObligations_lbl" xml:lang="en-US" id="id_10140147_1563285_1_1">Capital Lease Obligations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CapitalLeaseObligations_lbl" xml:lang="en-US" id="id_10140147_1563285_2_1">Capital lease obligation, total capitalized cost</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalLeaseObligations" xlink:to="us-gaap_CapitalLeaseObligations_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CapitalLeaseObligationsCurrent" xlink:label="us-gaap_CapitalLeaseObligationsCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalLeaseObligationsCurrent_lbl" xml:lang="en-US" id="id_10140147_1563286_1_1">Capital Lease Obligations, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CapitalLeaseObligationsCurrent_lbl" xml:lang="en-US" id="id_10140147_1563286_2_1">Capital lease obligation, current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CapitalLeaseObligationsCurrent_lbl" xml:lang="en-US" id="id_10140147_1563286_12_1">Capital Lease Obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalLeaseObligationsCurrent" xlink:to="us-gaap_CapitalLeaseObligationsCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CapitalLeaseObligationsIncurred" xlink:label="us-gaap_CapitalLeaseObligationsIncurred"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalLeaseObligationsIncurred_lbl" xml:lang="en-US" id="id_10140147_1561527_1_1">Capital Lease Obligations Incurred</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CapitalLeaseObligationsIncurred_lbl" xml:lang="en-US" id="id_10140147_1561527_2_1">Payments on Capital Leases</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalLeaseObligationsIncurred" xlink:to="us-gaap_CapitalLeaseObligationsIncurred_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CapitalLeaseObligationsNoncurrent" xlink:label="us-gaap_CapitalLeaseObligationsNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalLeaseObligationsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1563287_1_1">Capital Lease Obligations, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CapitalLeaseObligationsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1563287_2_1">Capital lease obligation, noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CapitalLeaseObligationsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1563287_12_1">Capital Lease Obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalLeaseObligationsNoncurrent" xlink:to="us-gaap_CapitalLeaseObligationsNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_CapitalLeasesTerminationDate" xlink:label="utl_CapitalLeasesTerminationDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_CapitalLeasesTerminationDate_lbl" xml:lang="en-US" id="id_10140147_1674828_3_1">Capital Leases Termination Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_CapitalLeasesTerminationDate_lbl" xml:lang="en-US" id="id_10140147_1674828_1_1">Capital Leases Termination Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_CapitalLeasesTerminationDate_lbl" xml:lang="en-US" id="id_10140147_1674828_2_1">Capital lease obligation, maturity period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_CapitalLeasesTerminationDate" xlink:to="utl_CapitalLeasesTerminationDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_10140147_1565347_1_1">Cash and Cash Equivalents, at Carrying Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_10140147_1565347_4_1">Cash and Cash Equivalents at End of Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_10140147_1565347_5_1">Cash and Cash Equivalents at Beginning of Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_10140147_1565347_2_1">Cash and Cash Equivalents</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsAxis" xlink:label="us-gaap_CashAndCashEquivalentsAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAxis_lbl" xml:lang="en-US" id="id_10140147_1547808_1_1">Cash and Cash Equivalents [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsAxis_lbl" xml:lang="en-US" id="id_10140147_1547808_2_1">Cash and Cash Equivalents</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAxis" xlink:to="us-gaap_CashAndCashEquivalentsAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_10140147_1567335_1_1">Cash and Cash Equivalents, Period Increase (Decrease)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_10140147_1567335_6_1">Net Increase in Cash and Cash Equivalents</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1547812_1_1">Cash and Cash Equivalents, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1547812_2_1">Cash and Cash Equivalents</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:to="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_CashDeposits" xlink:label="utl_CashDeposits"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_CashDeposits_lbl" xml:lang="en-US" id="id_10140147_1679633_3_1">Cash Deposits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_CashDeposits_lbl" xml:lang="en-US" id="id_10140147_1679633_1_1">Cash Deposits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_CashDeposits_lbl" xml:lang="en-US" id="id_10140147_1679633_2_1">Cash Deposits</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_CashDeposits" xlink:to="utl_CashDeposits_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_CashEquivalentsMaturityPeriod" xlink:label="utl_CashEquivalentsMaturityPeriod"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_CashEquivalentsMaturityPeriod_lbl" xml:lang="en-US" id="id_10140147_1596867_3_1">Cash Equivalents, Maturity Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_CashEquivalentsMaturityPeriod_lbl" xml:lang="en-US" id="id_10140147_1596867_1_1">Cash Equivalents, Maturity Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_CashEquivalentsMaturityPeriod_lbl" xml:lang="en-US" id="id_10140147_1596867_2_1">Cash equivalents maturity period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_CashEquivalentsMaturityPeriod" xlink:to="utl_CashEquivalentsMaturityPeriod_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashEquivalentsMember" xlink:label="us-gaap_CashEquivalentsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashEquivalentsMember_lbl" xml:lang="en-US" id="id_10140147_1551030_1_1">Cash Equivalents [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashEquivalentsMember_lbl" xml:lang="en-US" id="id_10140147_1551030_2_1">Cash Equivalents</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashEquivalentsMember" xlink:to="us-gaap_CashEquivalentsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ChangeInDeferredRegulatoryAndOtherCharges" xlink:label="utl_ChangeInDeferredRegulatoryAndOtherCharges"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ChangeInDeferredRegulatoryAndOtherCharges_lbl" xml:lang="en-US" id="id_10140147_1593220_3_1">The net change during the reporting period in deferred regulatory and other charges.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ChangeInDeferredRegulatoryAndOtherCharges_lbl" xml:lang="en-US" id="id_10140147_1593220_1_1">Change In Deferred Regulatory And Other Charges</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ChangeInDeferredRegulatoryAndOtherCharges_lbl" xml:lang="en-US" id="id_10140147_1593220_2_1">Deferred Regulatory and Other Charges</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ChangeInDeferredRegulatoryAndOtherCharges" xlink:to="utl_ChangeInDeferredRegulatoryAndOtherCharges_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassOfStockLineItems" xlink:label="us-gaap_ClassOfStockLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xml:lang="en-US" id="id_10140147_1554429_1_1">Class of Stock [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xml:lang="en-US" id="id_10140147_1554429_2_1">Class of Stock [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfStockLineItems" xlink:to="us-gaap_ClassOfStockLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_CommercialAndIndustrialMember" xlink:label="utl_CommercialAndIndustrialMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_CommercialAndIndustrialMember_lbl" xml:lang="en-US" id="id_10140147_1729180_3_1">Commercial and industrial.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_CommercialAndIndustrialMember_lbl" xml:lang="en-US" id="id_10140147_1729180_1_1">Commercial and Industrial [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_CommercialAndIndustrialMember_lbl" xml:lang="en-US" id="id_10140147_1729180_2_1">C&amp;I</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_CommercialAndIndustrialMember" xlink:to="utl_CommercialAndIndustrialMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="us-gaap_CommitmentsAndContingencies"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US" id="id_10140147_1563261_1_1">Commitments and Contingencies</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US" id="id_10140147_1563261_2_1">Commitments and Contingencies (Notes 6 &amp; 7)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingencies" xlink:to="us-gaap_CommitmentsAndContingencies_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xml:lang="en-US" id="id_10140147_1557699_1_1">Commitments and Contingencies Disclosure [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xml:lang="en-US" id="id_10140147_1557699_2_1">Commitments and Contingencies Disclosure [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xml:lang="en-US" id="id_10140147_1554455_1_1">Common Stock, Dividends, Per Share, Declared</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xml:lang="en-US" id="id_10140147_1554455_2_1">Dividend Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xml:lang="en-US" id="id_10140147_1554455_12_1">Dividends Declared Per Share of Common Stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockDividendsPerShareDeclared" xlink:to="us-gaap_CommonStockDividendsPerShareDeclared_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_CommonStockEquity" xlink:label="utl_CommonStockEquity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_CommonStockEquity_lbl" xml:lang="en-US" id="id_10140147_1753449_3_1">Common Stock Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_CommonStockEquity_lbl" xml:lang="en-US" id="id_10140147_1753449_1_1">Common Stock Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="utl_CommonStockEquity_lbl" xml:lang="en-US" id="id_10140147_1753449_4_1">Ending Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="utl_CommonStockEquity_lbl" xml:lang="en-US" id="id_10140147_1753449_5_1">Beginning Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="utl_CommonStockEquity_lbl" xml:lang="en-US" id="id_10140147_1753449_6_1">Total Common Stock Equity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_CommonStockEquity" xlink:to="utl_CommonStockEquity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember" xlink:label="us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember_lbl" xml:lang="en-US" id="id_10140147_1554456_1_1">Common Stock Including Additional Paid in Capital [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember_lbl" xml:lang="en-US" id="id_10140147_1554456_2_1">Common Equity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember" xlink:to="us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockMember" xlink:label="us-gaap_CommonStockMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US" id="id_10140147_1557711_1_1">Common Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US" id="id_10140147_1557711_2_1">Common Stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockMember" xlink:to="us-gaap_CommonStockMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="us-gaap_CommonStockSharesAuthorized"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US" id="id_10140147_1551141_1_1">Common Stock, Shares Authorized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US" id="id_10140147_1551141_2_1">Common Stock Authorized</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorized" xlink:to="us-gaap_CommonStockSharesAuthorized_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="us-gaap_CommonStockSharesOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US" id="id_10140147_1551142_1_1">Common Stock, Shares, Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US" id="id_10140147_1551142_2_1">Common Equity Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US" id="id_10140147_1551142_12_1">Common stock, shares outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStocksIncludingAdditionalPaidInCapital" xlink:label="us-gaap_CommonStocksIncludingAdditionalPaidInCapital"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStocksIncludingAdditionalPaidInCapital_lbl" xml:lang="en-US" id="id_10140147_1563255_1_1">Common Stocks, Including Additional Paid in Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStocksIncludingAdditionalPaidInCapital_lbl" xml:lang="en-US" id="id_10140147_1563255_2_1">Common Equity (Authorized: 25,000,000 and Outstanding:14,860,123, 14,107,741 and 14,815,585 Shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStocksIncludingAdditionalPaidInCapital" xlink:to="us-gaap_CommonStocksIncludingAdditionalPaidInCapital_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract_lbl" xml:lang="en-US" id="id_10140147_1547904_1_1">Retirement Benefits [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract_lbl" xml:lang="en-US" id="id_10140147_1547904_2_1">Retirement Benefits [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_CompensationAndRetirementDisclosureAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ComponentOfOperatingOtherCostAndExpenseLineItems" xlink:label="us-gaap_ComponentOfOperatingOtherCostAndExpenseLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ComponentOfOperatingOtherCostAndExpenseLineItems_lbl" xml:lang="en-US" id="id_10140147_1554462_1_1">Component of Operating Other Cost and Expense [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ComponentOfOperatingOtherCostAndExpenseLineItems_lbl" xml:lang="en-US" id="id_10140147_1554462_2_1">Component of Operating Other Cost and Expense [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComponentOfOperatingOtherCostAndExpenseLineItems" xlink:to="us-gaap_ComponentOfOperatingOtherCostAndExpenseLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ComponentsOfGasOperatingRevenueAndElectricOperatingRevenueTableTextBlock" xlink:label="utl_ComponentsOfGasOperatingRevenueAndElectricOperatingRevenueTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ComponentsOfGasOperatingRevenueAndElectricOperatingRevenueTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1772805_3_1">Components of gas operating revenue and electric operating revenue.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ComponentsOfGasOperatingRevenueAndElectricOperatingRevenueTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1772805_1_1">Components of Gas Operating Revenue and Electric Operating Revenue [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ComponentsOfGasOperatingRevenueAndElectricOperatingRevenueTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1772805_2_1">Components of Gas and Electric Operating Revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ComponentsOfGasOperatingRevenueAndElectricOperatingRevenueTableTextBlock" xlink:to="utl_ComponentsOfGasOperatingRevenueAndElectricOperatingRevenueTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ComponentsOfOtherOperatingCostAndExpenseTable" xlink:label="utl_ComponentsOfOtherOperatingCostAndExpenseTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ComponentsOfOtherOperatingCostAndExpenseTable_lbl" xml:lang="en-US" id="id_10140147_1610791_3_1">Components Of Other Operating Cost And Expense [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ComponentsOfOtherOperatingCostAndExpenseTable_lbl" xml:lang="en-US" id="id_10140147_1610791_1_1">Components Of Other Operating Cost And Expense [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ComponentsOfOtherOperatingCostAndExpenseTable_lbl" xml:lang="en-US" id="id_10140147_1610791_2_1">Components Of Other Operating Cost And Expense [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ComponentsOfOtherOperatingCostAndExpenseTable" xlink:to="utl_ComponentsOfOtherOperatingCostAndExpenseTable_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ConstructionCompletionPeriod" xlink:label="utl_ConstructionCompletionPeriod"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ConstructionCompletionPeriod_lbl" xml:lang="en-US" id="id_10140147_1694976_3_1">Construction Completion Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ConstructionCompletionPeriod_lbl" xml:lang="en-US" id="id_10140147_1694976_1_1">Construction Completion Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ConstructionCompletionPeriod_lbl" xml:lang="en-US" id="id_10140147_1694976_2_1">Construction completion period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ConstructionCompletionPeriod" xlink:to="utl_ConstructionCompletionPeriod_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ContractsRevenue" xlink:label="us-gaap_ContractsRevenue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ContractsRevenue_lbl" xml:lang="en-US" id="id_10140147_1561502_1_1">Contracts Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ContractsRevenue_lbl" xml:lang="en-US" id="id_10140147_1561502_2_1">Usource Contract Revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractsRevenue" xlink:to="us-gaap_ContractsRevenue_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ContractualObligationLineItems" xlink:label="utl_ContractualObligationLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ContractualObligationLineItems_lbl" xml:lang="en-US" id="id_10140147_1748852_3_1">Contractual Obligation [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ContractualObligationLineItems_lbl" xml:lang="en-US" id="id_10140147_1748852_1_1">Contractual Obligation [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ContractualObligationLineItems_lbl" xml:lang="en-US" id="id_10140147_1748852_2_1">Contractual Obligation [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ContractualObligationLineItems" xlink:to="utl_ContractualObligationLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ContractualObligationsMember" xlink:label="utl_ContractualObligationsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ContractualObligationsMember_lbl" xml:lang="en-US" id="id_10140147_1671743_3_1">Contractual Obligations [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ContractualObligationsMember_lbl" xml:lang="en-US" id="id_10140147_1671743_1_1">Contractual Obligations [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ContractualObligationsMember_lbl" xml:lang="en-US" id="id_10140147_1671743_2_1">Energy Supply &amp; Other Rate Adjustment Mechanisms</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ContractualObligationsMember" xlink:to="utl_ContractualObligationsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ContractualObligationTable" xlink:label="utl_ContractualObligationTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ContractualObligationTable_lbl" xml:lang="en-US" id="id_10140147_1704959_3_1">Contractual Obligation [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ContractualObligationTable_lbl" xml:lang="en-US" id="id_10140147_1704959_1_1">Contractual Obligation [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ContractualObligationTable_lbl" xml:lang="en-US" id="id_10140147_1704959_2_1">Contractual Obligation [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ContractualObligationTable" xlink:to="utl_ContractualObligationTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="us-gaap_CreditFacilityAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CreditFacilityAxis_lbl" xml:lang="en-US" id="id_10140147_1547993_1_1">Credit Facility [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CreditFacilityAxis_lbl" xml:lang="en-US" id="id_10140147_1547993_2_1">Credit Facility [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityAxis" xlink:to="us-gaap_CreditFacilityAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="us-gaap_CreditFacilityDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CreditFacilityDomain_lbl" xml:lang="en-US" id="id_10140147_1547994_1_1">Credit Facility [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CreditFacilityDomain_lbl" xml:lang="en-US" id="id_10140147_1547994_2_1">Credit Facility [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_CreditFacilityDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_CreditFacilityMember" xlink:label="utl_CreditFacilityMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_CreditFacilityMember_lbl" xml:lang="en-US" id="id_10140147_1642878_3_1">Credit Facility [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_CreditFacilityMember_lbl" xml:lang="en-US" id="id_10140147_1642878_1_1">Credit Facility [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_CreditFacilityMember_lbl" xml:lang="en-US" id="id_10140147_1642878_2_1">Credit Facility</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_CreditFacilityMember" xlink:to="utl_CreditFacilityMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="dei_CurrentFiscalYearEndDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US" id="id_10140147_1554541_1_1">Current Fiscal Year End Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US" id="id_10140147_1554541_2_1">Current Fiscal Year End Date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CurrentFiscalYearEndDate" xlink:to="dei_CurrentFiscalYearEndDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="us-gaap_DebtDisclosureAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xml:lang="en-US" id="id_10140147_1554562_1_1">Debt Disclosure [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xml:lang="en-US" id="id_10140147_1554562_2_1">Debt Disclosure [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_DebtDisclosureAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="us-gaap_DebtDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xml:lang="en-US" id="id_10140147_1554563_1_1">Debt Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xml:lang="en-US" id="id_10140147_1554563_2_1">DEBT AND FINANCING ARRANGEMENTS</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtDisclosureTextBlock" xlink:to="us-gaap_DebtDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="us-gaap_DebtInstrumentAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xml:lang="en-US" id="id_10140147_1548029_1_1">Debt Instrument [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xml:lang="en-US" id="id_10140147_1548029_2_1">Debt Instrument</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xml:lang="en-US" id="id_10140147_1548030_1_1">Debt Instrument, Basis Spread on Variable Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xml:lang="en-US" id="id_10140147_1548030_2_1">Credit facility, daily fluctuating rate of interest</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:to="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="us-gaap_DebtInstrumentCarryingAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xml:lang="en-US" id="id_10140147_1562346_1_1">Long-term Debt, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xml:lang="en-US" id="id_10140147_1562346_2_1">Total Long-Term Debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentCarryingAmount" xlink:to="us-gaap_DebtInstrumentCarryingAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentCovenantDescription" xlink:label="us-gaap_DebtInstrumentCovenantDescription"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentCovenantDescription_lbl" xml:lang="en-US" id="id_10140147_1554567_1_1">Debt Instrument, Covenant Description</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentCovenantDescription_lbl" xml:lang="en-US" id="id_10140147_1554567_2_1">Percentage of capitalization</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentCovenantDescription" xlink:to="us-gaap_DebtInstrumentCovenantDescription_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="us-gaap_DebtInstrumentFaceAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US" id="id_10140147_1562344_1_1">Debt Instrument, Face Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US" id="id_10140147_1562344_2_1">Long-term debt, aggregate principal amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US" id="id_10140147_1551243_1_1">Debt Instrument, Interest Rate, Stated Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US" id="id_10140147_1551243_2_1">Long-term debt, stated interest rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US" id="id_10140147_1551243_12_1">Stated interest rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="us-gaap_DebtInstrumentLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xml:lang="en-US" id="id_10140147_1557824_1_1">Debt Instrument [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xml:lang="en-US" id="id_10140147_1557824_2_1">Debt Instrument [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="us-gaap_DebtInstrumentMaturityDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US" id="id_10140147_1557825_1_1">Debt Instrument, Maturity Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US" id="id_10140147_1557825_2_1">Debt instrument due date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US" id="id_10140147_1557825_12_1">Long-term debt, maturity date</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsRemainderOfFiscalYear" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsRemainderOfFiscalYear"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsRemainderOfFiscalYear_lbl" xml:lang="en-US" id="id_10140147_1561442_1_1">Defined Benefit Plan, Expected Future Benefit Payment, Remainder of Fiscal Year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsRemainderOfFiscalYear_lbl" xml:lang="en-US" id="id_10140147_1561442_2_1">Expected additional benefit payments under SERP Plan in 2016</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsRemainderOfFiscalYear" xlink:to="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsRemainderOfFiscalYear_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_lbl" xml:lang="en-US" id="id_10140147_1563178_1_1">Defined Benefit Plan, Expected Return (Loss) on Plan Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_lbl" xml:lang="en-US" id="id_10140147_1563178_14_1">Expected Return on Plan Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:to="us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_DefinedBenefitPlanGrossPeriodicBenefitCost" xlink:label="utl_DefinedBenefitPlanGrossPeriodicBenefitCost"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_DefinedBenefitPlanGrossPeriodicBenefitCost_lbl" xml:lang="en-US" id="id_10140147_1605461_3_1">The gross amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_DefinedBenefitPlanGrossPeriodicBenefitCost_lbl" xml:lang="en-US" id="id_10140147_1605461_1_1">Defined Benefit Plan, Gross Periodic Benefit Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="utl_DefinedBenefitPlanGrossPeriodicBenefitCost_lbl" xml:lang="en-US" id="id_10140147_1605461_6_1">Sub-total</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_DefinedBenefitPlanGrossPeriodicBenefitCost" xlink:to="utl_DefinedBenefitPlanGrossPeriodicBenefitCost_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear" xlink:label="us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_lbl" xml:lang="en-US" id="id_10140147_1554640_1_1">Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_lbl" xml:lang="en-US" id="id_10140147_1554640_2_1">Health Care Cost Trend Rate Assumed for Next Year</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear" xlink:to="us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="us-gaap_DefinedBenefitPlanInterestCost"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DefinedBenefitPlanInterestCost_lbl" xml:lang="en-US" id="id_10140147_1564511_1_1">Defined Benefit Plan, Interest Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DefinedBenefitPlanInterestCost_lbl" xml:lang="en-US" id="id_10140147_1564511_2_1">Interest Cost</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanInterestCost" xlink:to="us-gaap_DefinedBenefitPlanInterestCost_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_lbl" xml:lang="en-US" id="id_10140147_1566487_1_1">Defined Benefit Plan, Net Periodic Benefit Cost (Credit)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_lbl" xml:lang="en-US" id="id_10140147_1566487_2_1">Non-service cost net periodic benefit costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_lbl" xml:lang="en-US" id="id_10140147_1566487_6_1">Net Periodic Benefit Cost Recognized</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="us-gaap_DefinedBenefitPlanServiceCost"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DefinedBenefitPlanServiceCost_lbl" xml:lang="en-US" id="id_10140147_1567465_1_1">Defined Benefit Plan, Service Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DefinedBenefitPlanServiceCost_lbl" xml:lang="en-US" id="id_10140147_1567465_2_1">Service Cost</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanServiceCost" xlink:to="us-gaap_DefinedBenefitPlanServiceCost_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1" xlink:label="us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_lbl" xml:lang="en-US" id="id_10140147_1554648_1_1">Defined Benefit Plan, Ultimate Health Care Cost Trend Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_lbl" xml:lang="en-US" id="id_10140147_1554648_2_1">Ultimate Health Care Cost Trend Rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1" xlink:to="us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate" xlink:label="us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_lbl" xml:lang="en-US" id="id_10140147_1548117_1_1">Defined Benefit Plan, Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_lbl" xml:lang="en-US" id="id_10140147_1548117_2_1">Year that Ultimate Health Care Cost Trend Rate is reached</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate" xlink:to="us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral_lbl" xml:lang="en-US" id="id_10140147_1567483_1_1">Derivative Asset, Fair Value, Amount Not Offset Against Collateral</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral_lbl" xml:lang="en-US" id="id_10140147_1567483_2_1">Derivative Assets, not designated as hedging instruments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral" xlink:to="us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativesPolicyTextBlock" xlink:label="us-gaap_DerivativesPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativesPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1557966_1_1">Derivatives, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativesPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1557966_2_1">Derivatives</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativesPolicyTextBlock" xlink:to="us-gaap_DerivativesPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_DisclosureOfDividendsDeclaredAndPaidTextBlock" xlink:label="utl_DisclosureOfDividendsDeclaredAndPaidTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_DisclosureOfDividendsDeclaredAndPaidTextBlock_lbl" xml:lang="en-US" id="id_10140147_1678397_3_1">Disclosure of Dividends Declared and Paid.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_DisclosureOfDividendsDeclaredAndPaidTextBlock_lbl" xml:lang="en-US" id="id_10140147_1678397_1_1">Disclosure of Dividends Declared and Paid [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_DisclosureOfDividendsDeclaredAndPaidTextBlock_lbl" xml:lang="en-US" id="id_10140147_1678397_2_1">DIVIDENDS DECLARED PER SHARE</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_DisclosureOfDividendsDeclaredAndPaidTextBlock" xlink:to="utl_DisclosureOfDividendsDeclaredAndPaidTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_DivestitureMember" xlink:label="utl_DivestitureMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_DivestitureMember_lbl" xml:lang="en-US" id="id_10140147_1694371_3_1">Divestiture [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_DivestitureMember_lbl" xml:lang="en-US" id="id_10140147_1694371_1_1">Divestiture [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_DivestitureMember_lbl" xml:lang="en-US" id="id_10140147_1694371_2_1">Power Supply Contract Divestitures</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_DivestitureMember" xlink:to="utl_DivestitureMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_DividendAndDistributionReinvestmentAndSharePurchasePlanMember" xlink:label="utl_DividendAndDistributionReinvestmentAndSharePurchasePlanMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_DividendAndDistributionReinvestmentAndSharePurchasePlanMember_lbl" xml:lang="en-US" id="id_10140147_1702248_3_1">Dividend and Distribution Reinvestment and Share Purchase Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_DividendAndDistributionReinvestmentAndSharePurchasePlanMember_lbl" xml:lang="en-US" id="id_10140147_1702248_1_1">Dividend and Distribution Reinvestment and Share Purchase Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_DividendAndDistributionReinvestmentAndSharePurchasePlanMember_lbl" xml:lang="en-US" id="id_10140147_1702248_2_1">Dividend and Distribution Reinvestment and Share Purchase Plan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_DividendAndDistributionReinvestmentAndSharePurchasePlanMember" xlink:to="utl_DividendAndDistributionReinvestmentAndSharePurchasePlanMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DividendPayableDateToBePaidDayMonthAndYear" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" xml:lang="en-US" id="id_10140147_1551475_1_1">Dividends Payable, Date to be Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" xml:lang="en-US" id="id_10140147_1551475_2_1">Date Paid (Payable)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendPayableDateToBePaidDayMonthAndYear" xlink:to="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DividendsAxis" xlink:label="us-gaap_DividendsAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsAxis_lbl" xml:lang="en-US" id="id_10140147_1548313_1_1">Dividends [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendsAxis_lbl" xml:lang="en-US" id="id_10140147_1548313_2_1">Dividends</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsAxis" xlink:to="us-gaap_DividendsAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DividendsCommonStock" xlink:label="us-gaap_DividendsCommonStock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsCommonStock_lbl" xml:lang="en-US" id="id_10140147_1566536_1_1">Dividends, Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DividendsCommonStock_lbl" xml:lang="en-US" id="id_10140147_1566536_14_1">Dividends on Common Shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsCommonStock" xlink:to="us-gaap_DividendsCommonStock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DividendsDeclaredTableTextBlock" xlink:label="us-gaap_DividendsDeclaredTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsDeclaredTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1551477_1_1">Dividends Declared [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendsDeclaredTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1551477_2_1">Schedule of Dividends Declared</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsDeclaredTableTextBlock" xlink:to="us-gaap_DividendsDeclaredTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DividendsDomain" xlink:label="us-gaap_DividendsDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsDomain_lbl" xml:lang="en-US" id="id_10140147_1558111_1_1">Dividends [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendsDomain_lbl" xml:lang="en-US" id="id_10140147_1558111_2_1">Dividends [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsDomain" xlink:to="us-gaap_DividendsDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DividendsPayableDateDeclaredDayMonthAndYear" xlink:label="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear_lbl" xml:lang="en-US" id="id_10140147_1548259_1_1">Dividends Payable, Date Declared</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear_lbl" xml:lang="en-US" id="id_10140147_1548259_2_1">Declaration Date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear" xlink:to="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DividendsPayableDateOfRecordDayMonthAndYear" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" xml:lang="en-US" id="id_10140147_1558113_1_1">Dividends Payable, Date of Record</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xml:lang="en-US" id="id_10140147_1548271_1_1">Document Fiscal Period Focus</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalYearFocus_lbl" xml:lang="en-US" id="id_10140147_1548272_1_1">Document Fiscal Year Focus</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentInformationTable" xlink:to="dei_DocumentInformationTable_lbl"/>
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    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_DomesticCountryAndStateAndLocalJurisdictionMember" xlink:label="utl_DomesticCountryAndStateAndLocalJurisdictionMember"/>
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    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ElectricMember" xlink:label="utl_ElectricMember"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ElectricMember_lbl" xml:lang="en-US" id="id_10140147_1704544_1_1">Electric [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ElectricMember_lbl" xml:lang="en-US" id="id_10140147_1704544_2_1">Electric</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ElectricTransmissionMember_lbl" xml:lang="en-US" id="id_10140147_1548371_1_1">Electric Transmission [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ElectricTransmissionMember_lbl" xml:lang="en-US" id="id_10140147_1548371_2_1">Electric base</label>
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    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ElectricUtilitiesMember" xlink:label="utl_ElectricUtilitiesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ElectricUtilitiesMember_lbl" xml:lang="en-US" id="id_10140147_1688175_3_1">Electric Utilities [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ElectricUtilitiesMember_lbl" xml:lang="en-US" id="id_10140147_1688175_1_1">Electric Utilities [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ElectricUtilitiesMember_lbl" xml:lang="en-US" id="id_10140147_1688175_2_1">Deferred Storm Charges</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EnergyAxis" xlink:label="us-gaap_EnergyAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EnergyAxis_lbl" xml:lang="en-US" id="id_10140147_1548333_1_1">Energy [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EnergyAxis_lbl" xml:lang="en-US" id="id_10140147_1548333_2_1">Energy [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EnergyAxis" xlink:to="us-gaap_EnergyAxis_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EnergyDomain_lbl" xml:lang="en-US" id="id_10140147_1548334_1_1">Energy [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EnergyDomain_lbl" xml:lang="en-US" id="id_10140147_1548334_2_1">Energy [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EnergyDomain" xlink:to="us-gaap_EnergyDomain_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EnergyMarketingContractLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_10140147_1563131_1_1">Energy Marketing Contract Liabilities, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EnergyMarketingContractLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_10140147_1563131_2_1">Energy Supply Obligations</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_EnvironmentalMattersMember_lbl" xml:lang="en-US" id="id_10140147_1710145_1_1">Environmental Matters [Member]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_lbl" xml:lang="en-US" id="id_10140147_1555030_1_1">Fair Value by Liability Class [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_lbl" xml:lang="en-US" id="id_10140147_1555030_2_1">Fair Value by Liability Class [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xml:lang="en-US" id="id_10140147_1548456_1_1">Fair Value Hierarchy [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xml:lang="en-US" id="id_10140147_1548456_2_1">Fair Value Hierarchy [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_FairValueOfRestrictedStockUnitsSettledInCash" xlink:label="utl_FairValueOfRestrictedStockUnitsSettledInCash"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_FairValueOfRestrictedStockUnitsSettledInCash_lbl" xml:lang="en-US" id="id_10140147_1681667_3_1">Fair Value of Restricted Stock Units to be settled in cash.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_FairValueOfRestrictedStockUnitsSettledInCash_lbl" xml:lang="en-US" id="id_10140147_1681667_1_1">Fair Value of Restricted Stock Units Settled in Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_FairValueOfRestrictedStockUnitsSettledInCash_lbl" xml:lang="en-US" id="id_10140147_1681667_2_1">Fair value of liabilities associated with fully vested RSUs that will be settled in cash</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_FairValueOfRestrictedStockUnitsSettledInCash" xlink:to="utl_FairValueOfRestrictedStockUnitsSettledInCash_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_FirstMortgageBondsEightPointFourNinePercentSeniorSecuredNotesDueOctoberFourteenTwentyTwentyFourMember" xlink:label="utl_FirstMortgageBondsEightPointFourNinePercentSeniorSecuredNotesDueOctoberFourteenTwentyTwentyFourMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_FirstMortgageBondsEightPointFourNinePercentSeniorSecuredNotesDueOctoberFourteenTwentyTwentyFourMember_lbl" xml:lang="en-US" id="id_10140147_1587264_3_1">First Mortgage Bonds Eight Point Four Nine Percent Senior Secured Notes Due October Fourteen Twenty Twenty Four [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_FirstMortgageBondsEightPointFourNinePercentSeniorSecuredNotesDueOctoberFourteenTwentyTwentyFourMember_lbl" xml:lang="en-US" id="id_10140147_1587264_1_1">First Mortgage Bonds Eight Point Four Nine Percent Senior Secured Notes Due October Fourteen Twenty Twenty Four [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_FirstMortgageBondsEightPointFourNinePercentSeniorSecuredNotesDueOctoberFourteenTwentyTwentyFourMember_lbl" xml:lang="en-US" id="id_10140147_1587264_2_1">First Mortgage Bonds 8.49% Senior Secured Notes, Due October 14, 2024</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_FirstMortgageBondsEightPointFourNinePercentSeniorSecuredNotesDueOctoberFourteenTwentyTwentyFourMember" xlink:to="utl_FirstMortgageBondsEightPointFourNinePercentSeniorSecuredNotesDueOctoberFourteenTwentyTwentyFourMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_FirstMortgageBondsEightPointZeroZeroPercentSeniorSecuredNotesDueMayOneTwentyThirtyOneMember" xlink:label="utl_FirstMortgageBondsEightPointZeroZeroPercentSeniorSecuredNotesDueMayOneTwentyThirtyOneMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_FirstMortgageBondsEightPointZeroZeroPercentSeniorSecuredNotesDueMayOneTwentyThirtyOneMember_lbl" xml:lang="en-US" id="id_10140147_1598819_3_1">First Mortgage Bonds Eight Point Zero Zero Percent Senior Secured Notes Due May One Twenty Thirty One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_FirstMortgageBondsEightPointZeroZeroPercentSeniorSecuredNotesDueMayOneTwentyThirtyOneMember_lbl" xml:lang="en-US" id="id_10140147_1598819_1_1">First Mortgage Bonds Eight Point Zero Zero Percent Senior Secured Notes Due May One Twenty Thirty One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_FirstMortgageBondsEightPointZeroZeroPercentSeniorSecuredNotesDueMayOneTwentyThirtyOneMember_lbl" xml:lang="en-US" id="id_10140147_1598819_2_1">First Mortgage Bonds 8.00% Senior Secured Notes, Due May 1, 2031</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_FirstMortgageBondsEightPointZeroZeroPercentSeniorSecuredNotesDueMayOneTwentyThirtyOneMember" xlink:to="utl_FirstMortgageBondsEightPointZeroZeroPercentSeniorSecuredNotesDueMayOneTwentyThirtyOneMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_FirstMortgageBondsFivePointTwoFourPercentSeniorSecuredNotesDueMarchTwoTwentyTwentyMember" xlink:label="utl_FirstMortgageBondsFivePointTwoFourPercentSeniorSecuredNotesDueMarchTwoTwentyTwentyMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_FirstMortgageBondsFivePointTwoFourPercentSeniorSecuredNotesDueMarchTwoTwentyTwentyMember_lbl" xml:lang="en-US" id="id_10140147_1699589_3_1">First Mortgage Bonds Five Point Two Four Percent Senior Secured Notes Due March Two Twenty Twenty [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_FirstMortgageBondsFivePointTwoFourPercentSeniorSecuredNotesDueMarchTwoTwentyTwentyMember_lbl" xml:lang="en-US" id="id_10140147_1699589_1_1">First Mortgage Bonds Five Point Two Four Percent Senior Secured Notes Due March Two Twenty Twenty [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_FirstMortgageBondsFivePointTwoFourPercentSeniorSecuredNotesDueMarchTwoTwentyTwentyMember_lbl" xml:lang="en-US" id="id_10140147_1699589_2_1">First Mortgage Bonds 5.24% Senior Secured Notes, Due March 2, 2020</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_FirstMortgageBondsFivePointTwoFourPercentSeniorSecuredNotesDueMarchTwoTwentyTwentyMember" xlink:to="utl_FirstMortgageBondsFivePointTwoFourPercentSeniorSecuredNotesDueMarchTwoTwentyTwentyMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_FirstMortgageBondsSixPointNineSixPercentSeniorSecuredNotesDueSeptemberOneTwentyTwentyEightMember" xlink:label="utl_FirstMortgageBondsSixPointNineSixPercentSeniorSecuredNotesDueSeptemberOneTwentyTwentyEightMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_FirstMortgageBondsSixPointNineSixPercentSeniorSecuredNotesDueSeptemberOneTwentyTwentyEightMember_lbl" xml:lang="en-US" id="id_10140147_1687909_3_1">First Mortgage Bonds Six Point Nine Six Percent Senior Secured Notes Due September One Twenty Twenty Eight [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_FirstMortgageBondsSixPointNineSixPercentSeniorSecuredNotesDueSeptemberOneTwentyTwentyEightMember_lbl" xml:lang="en-US" id="id_10140147_1687909_1_1">First Mortgage Bonds Six Point Nine Six Percent Senior Secured Notes Due September One Twenty Twenty Eight [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_FirstMortgageBondsSixPointNineSixPercentSeniorSecuredNotesDueSeptemberOneTwentyTwentyEightMember_lbl" xml:lang="en-US" id="id_10140147_1687909_2_1">First Mortgage Bonds 6.96% Senior Secured Notes, Due September 1, 2028</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_FirstMortgageBondsSixPointNineSixPercentSeniorSecuredNotesDueSeptemberOneTwentyTwentyEightMember" xlink:to="utl_FirstMortgageBondsSixPointNineSixPercentSeniorSecuredNotesDueSeptemberOneTwentyTwentyEightMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_FirstMortgageBondsSixPointThreeTwoPercentSeniorSecuredNotesDueSeptemberFifteenTwentyThirtySixMember" xlink:label="utl_FirstMortgageBondsSixPointThreeTwoPercentSeniorSecuredNotesDueSeptemberFifteenTwentyThirtySixMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_FirstMortgageBondsSixPointThreeTwoPercentSeniorSecuredNotesDueSeptemberFifteenTwentyThirtySixMember_lbl" xml:lang="en-US" id="id_10140147_1745572_3_1">First Mortgage Bonds Six Point Three Two Percent Senior Secured Notes Due September Fifteen Twenty Thirty Six [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_FirstMortgageBondsSixPointThreeTwoPercentSeniorSecuredNotesDueSeptemberFifteenTwentyThirtySixMember_lbl" xml:lang="en-US" id="id_10140147_1745572_1_1">First Mortgage Bonds Six Point Three Two Percent Senior Secured Notes Due September Fifteen Twenty Thirty Six [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_FirstMortgageBondsSixPointThreeTwoPercentSeniorSecuredNotesDueSeptemberFifteenTwentyThirtySixMember_lbl" xml:lang="en-US" id="id_10140147_1745572_2_1">First Mortgage Bonds 6.32% Senior Secured Notes, Due September 15, 2036</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_FirstMortgageBondsSixPointThreeTwoPercentSeniorSecuredNotesDueSeptemberFifteenTwentyThirtySixMember" xlink:to="utl_FirstMortgageBondsSixPointThreeTwoPercentSeniorSecuredNotesDueSeptemberFifteenTwentyThirtySixMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_FirstRateStepAdjustmentsMember" xlink:label="utl_FirstRateStepAdjustmentsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_FirstRateStepAdjustmentsMember_lbl" xml:lang="en-US" id="id_10140147_1591236_3_1">First rate step adjustments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_FirstRateStepAdjustmentsMember_lbl" xml:lang="en-US" id="id_10140147_1591236_1_1">First rate Step Adjustments [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_FirstRateStepAdjustmentsMember_lbl" xml:lang="en-US" id="id_10140147_1591236_2_1">First Rate Step Adjustments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_FirstRateStepAdjustmentsMember" xlink:to="utl_FirstRateStepAdjustmentsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_FitchburgGasAndElectricLightCompanyMember" xlink:label="utl_FitchburgGasAndElectricLightCompanyMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_FitchburgGasAndElectricLightCompanyMember_lbl" xml:lang="en-US" id="id_10140147_1585298_3_1">Fitchburg Gas and Electric Light Company [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_FitchburgGasAndElectricLightCompanyMember_lbl" xml:lang="en-US" id="id_10140147_1585298_1_1">Fitchburg Gas and Electric Light Company [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_FitchburgGasAndElectricLightCompanyMember_lbl" xml:lang="en-US" id="id_10140147_1585298_2_1">Fitchburg Gas and Electric Light Company</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_FitchburgGasAndElectricLightCompanyMember" xlink:to="utl_FitchburgGasAndElectricLightCompanyMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FixedIncomeFundsMember" xlink:label="us-gaap_FixedIncomeFundsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FixedIncomeFundsMember_lbl" xml:lang="en-US" id="id_10140147_1548555_1_1">Fixed Income Funds [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FixedIncomeFundsMember_lbl" xml:lang="en-US" id="id_10140147_1548555_2_1">Fixed Income Funds</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FixedIncomeFundsMember" xlink:to="us-gaap_FixedIncomeFundsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GasDistributionMember" xlink:label="us-gaap_GasDistributionMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GasDistributionMember_lbl" xml:lang="en-US" id="id_10140147_1551805_1_1">Gas Distribution [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GasDistributionMember_lbl" xml:lang="en-US" id="id_10140147_1551805_2_1">Natural Gas Distribution</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GasDistributionMember" xlink:to="us-gaap_GasDistributionMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_GasPipelineRefundMember" xlink:label="utl_GasPipelineRefundMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_GasPipelineRefundMember_lbl" xml:lang="en-US" id="id_10140147_1625339_3_1">Gas Pipeline Refund [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_GasPipelineRefundMember_lbl" xml:lang="en-US" id="id_10140147_1625339_1_1">Gas Pipeline Refund [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_GasPipelineRefundMember_lbl" xml:lang="en-US" id="id_10140147_1625339_2_1">Gas Pipeline Refund</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_GasPipelineRefundMember" xlink:to="utl_GasPipelineRefundMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_GasSegmentMember" xlink:label="utl_GasSegmentMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_GasSegmentMember_lbl" xml:lang="en-US" id="id_10140147_1618080_3_1">Gas Segment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_GasSegmentMember_lbl" xml:lang="en-US" id="id_10140147_1618080_1_1">Gas Segment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_GasSegmentMember_lbl" xml:lang="en-US" id="id_10140147_1618080_2_1">Gas Segment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_GasSegmentMember" xlink:to="utl_GasSegmentMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GasTransmissionMember" xlink:label="us-gaap_GasTransmissionMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GasTransmissionMember_lbl" xml:lang="en-US" id="id_10140147_1555185_1_1">Gas Transmission [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GasTransmissionMember_lbl" xml:lang="en-US" id="id_10140147_1555185_2_1">Gas base</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GasTransmissionMember" xlink:to="us-gaap_GasTransmissionMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_GasTransportationAndStorageMember" xlink:label="utl_GasTransportationAndStorageMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_GasTransportationAndStorageMember_lbl" xml:lang="en-US" id="id_10140147_1723989_3_1">Gas Transportation and Storage [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_GasTransportationAndStorageMember_lbl" xml:lang="en-US" id="id_10140147_1723989_1_1">Gas Transportation and Storage [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_GasTransportationAndStorageMember_lbl" xml:lang="en-US" id="id_10140147_1723989_2_1">Gas Transportation and Storage</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_GasTransportationAndStorageMember" xlink:to="utl_GasTransportationAndStorageMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_GeneratingCapacity" xlink:label="utl_GeneratingCapacity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_GeneratingCapacity_lbl" xml:lang="en-US" id="id_10140147_1639939_3_1">Generating Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_GeneratingCapacity_lbl" xml:lang="en-US" id="id_10140147_1639939_1_1">Generating Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_GeneratingCapacity_lbl" xml:lang="en-US" id="id_10140147_1639939_2_1">Power generation capacity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_GeneratingCapacity" xlink:to="utl_GeneratingCapacity_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_GracePeriodForIssuingOrReceivingRefunds" xlink:label="utl_GracePeriodForIssuingOrReceivingRefunds"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_GracePeriodForIssuingOrReceivingRefunds_lbl" xml:lang="en-US" id="id_10140147_1606617_3_1">Grace Period for Issuing or Receiving Refunds</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_GracePeriodForIssuingOrReceivingRefunds_lbl" xml:lang="en-US" id="id_10140147_1606617_1_1">Grace Period for Issuing or Receiving Refunds</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_GracePeriodForIssuingOrReceivingRefunds_lbl" xml:lang="en-US" id="id_10140147_1606617_2_1">Grace period to receive refund</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_GracePeriodForIssuingOrReceivingRefunds" xlink:to="utl_GracePeriodForIssuingOrReceivingRefunds_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_GraniteStateGasTransmissionIncMember_lbl" xml:lang="en-US" id="id_10140147_1706946_3_1">Granite State Gas Transmission Inc [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_HedgingDesignationDomain_lbl" xml:lang="en-US" id="id_10140147_1555244_2_1">Hedging Designation [Domain]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_IncomeTaxesTable_lbl" xml:lang="en-US" id="id_10140147_1722077_1_1">Income Taxes [Table]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxReconciliationTaxCredits_lbl" xml:lang="en-US" id="id_10140147_1561241_1_1">Effective Income Tax Rate Reconciliation, Tax Credit, Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeTaxReconciliationTaxCredits_lbl" xml:lang="en-US" id="id_10140147_1561241_2_1">Tax benefit for New Hampshire business enterprise tax credits</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationTaxCredits" xlink:to="us-gaap_IncomeTaxReconciliationTaxCredits_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_IncomeTaxRelatedLiabilitiesMember" xlink:label="utl_IncomeTaxRelatedLiabilitiesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_IncomeTaxRelatedLiabilitiesMember_lbl" xml:lang="en-US" id="id_10140147_1688375_3_1">Income tax related liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_IncomeTaxRelatedLiabilitiesMember_lbl" xml:lang="en-US" id="id_10140147_1688375_1_1">Income Tax Related Liabilities [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_IncomeTaxRelatedLiabilitiesMember_lbl" xml:lang="en-US" id="id_10140147_1688375_2_1">Income Tax Related Liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_IncomeTaxRelatedLiabilitiesMember" xlink:to="utl_IncomeTaxRelatedLiabilitiesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xml:lang="en-US" id="id_10140147_1564702_1_1">Increase (Decrease) in Accounts Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xml:lang="en-US" id="id_10140147_1564702_2_1">Accounts Payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayable" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xml:lang="en-US" id="id_10140147_1562102_1_1">Increase (Decrease) in Accounts Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xml:lang="en-US" id="id_10140147_1562102_14_1">Accounts Receivable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:to="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_IncreaseDecreaseInGasInventoryFinancing" xlink:label="utl_IncreaseDecreaseInGasInventoryFinancing"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_IncreaseDecreaseInGasInventoryFinancing_lbl" xml:lang="en-US" id="id_10140147_1734181_3_1">The net change during the reporting period in exchange gas financing.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_IncreaseDecreaseInGasInventoryFinancing_lbl" xml:lang="en-US" id="id_10140147_1734181_1_1">Increase Decrease In Gas Inventory Financing</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_IncreaseDecreaseInGasInventoryFinancing_lbl" xml:lang="en-US" id="id_10140147_1734181_2_1">Net Decrease in Exchange Gas Financing</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_IncreaseDecreaseInGasInventoryFinancing" xlink:to="utl_IncreaseDecreaseInGasInventoryFinancing_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US" id="id_10140147_1551957_1_1">Increase (Decrease) in Operating Capital [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US" id="id_10140147_1551957_2_1">Changes in Working Capital Items:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_IncreaseDecreaseInOperatingCosts" xlink:label="utl_IncreaseDecreaseInOperatingCosts"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_IncreaseDecreaseInOperatingCosts_lbl" xml:lang="en-US" id="id_10140147_1774326_3_1">Increase (Decrease) in Operating Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_IncreaseDecreaseInOperatingCosts_lbl" xml:lang="en-US" id="id_10140147_1774326_1_1">Increase (Decrease) in Operating Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_IncreaseDecreaseInOperatingCosts_lbl" xml:lang="en-US" id="id_10140147_1774326_2_1">Reduction of annual operating costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_IncreaseDecreaseInOperatingCosts" xlink:to="utl_IncreaseDecreaseInOperatingCosts_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet" xlink:label="us-gaap_IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet_lbl" xml:lang="en-US" id="id_10140147_1563895_1_1">Increase (Decrease) in Other Current Assets and Liabilities, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet_lbl" xml:lang="en-US" id="id_10140147_1563895_14_1">Other Changes in Working Capital Items</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet" xlink:to="us-gaap_IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_lbl" xml:lang="en-US" id="id_10140147_1562080_1_1">Increase (Decrease) in Other Operating Assets and Liabilities, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_lbl" xml:lang="en-US" id="id_10140147_1562080_14_1">Other, net</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:label="us-gaap_IncreaseDecreaseInReceivables"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInReceivables_lbl" xml:lang="en-US" id="id_10140147_1563891_1_1">Increase (Decrease) in Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInReceivables_lbl" xml:lang="en-US" id="id_10140147_1563891_14_1">Exchange Gas Receivable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInReceivables" xlink:to="us-gaap_IncreaseDecreaseInReceivables_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue" xlink:label="us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue_lbl" xml:lang="en-US" id="id_10140147_1566721_1_1">Increase (Decrease) in Regulatory Clause Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue_lbl" xml:lang="en-US" id="id_10140147_1566721_2_1">Increase (decrease) in annual revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue" xlink:to="us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInRegulatoryLiabilities" xlink:label="us-gaap_IncreaseDecreaseInRegulatoryLiabilities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInRegulatoryLiabilities_lbl" xml:lang="en-US" id="id_10140147_1564716_1_1">Increase (Decrease) in Regulatory Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInRegulatoryLiabilities_lbl" xml:lang="en-US" id="id_10140147_1564716_2_1">Regulatory Liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInRegulatoryLiabilities" xlink:to="us-gaap_IncreaseDecreaseInRegulatoryLiabilities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInUnbilledReceivables" xlink:label="us-gaap_IncreaseDecreaseInUnbilledReceivables"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInUnbilledReceivables_lbl" xml:lang="en-US" id="id_10140147_1561213_1_1">Increase (Decrease) in Unbilled Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInUnbilledReceivables_lbl" xml:lang="en-US" id="id_10140147_1561213_14_1">Accrued Revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInUnbilledReceivables" xlink:to="us-gaap_IncreaseDecreaseInUnbilledReceivables_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet" xlink:label="us-gaap_InterestIncomeExpenseNonoperatingNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestIncomeExpenseNonoperatingNet_lbl" xml:lang="en-US" id="id_10140147_1561190_1_1">Interest Income (Expense), Nonoperating, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_InterestIncomeExpenseNonoperatingNet_lbl" xml:lang="en-US" id="id_10140147_1561190_14_1">Interest Expense, net</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestIncomeExpenseNonoperatingNet" xlink:to="us-gaap_InterestIncomeExpenseNonoperatingNet_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestPaidNet" xlink:label="us-gaap_InterestPaidNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPaidNet_lbl" xml:lang="en-US" id="id_10140147_1562044_1_1">Interest Paid, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestPaidNet_lbl" xml:lang="en-US" id="id_10140147_1562044_2_1">Interest Paid</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaidNet" xlink:to="us-gaap_InterestPaidNet_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:label="us-gaap_InterestPayableCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPayableCurrent_lbl" xml:lang="en-US" id="id_10140147_1562045_1_1">Interest Payable, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestPayableCurrent_lbl" xml:lang="en-US" id="id_10140147_1562045_2_1">Interest Payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPayableCurrent" xlink:to="us-gaap_InterestPayableCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InventoryPolicyTextBlock" xlink:label="us-gaap_InventoryPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InventoryPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1548813_1_1">Inventory, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InventoryPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1548813_2_1">Gas Inventory</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryPolicyTextBlock" xlink:to="us-gaap_InventoryPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InventoryRawMaterialsAndSupplies" xlink:label="us-gaap_InventoryRawMaterialsAndSupplies"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InventoryRawMaterialsAndSupplies_lbl" xml:lang="en-US" id="id_10140147_1566760_1_1">Inventory, Raw Materials and Supplies, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InventoryRawMaterialsAndSupplies_lbl" xml:lang="en-US" id="id_10140147_1566760_2_1">Materials and Supplies</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryRawMaterialsAndSupplies" xlink:to="us-gaap_InventoryRawMaterialsAndSupplies_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:label="us-gaap_InvestmentTypeAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xml:lang="en-US" id="id_10140147_1555454_1_1">Investment Type [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xml:lang="en-US" id="id_10140147_1555454_2_1">Summary of Investments, Other than Investments in Related Parties, by Type</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentTypeAxis" xlink:to="us-gaap_InvestmentTypeAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="us-gaap_InvestmentTypeCategorizationMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xml:lang="en-US" id="id_10140147_1552094_1_1">Investments [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xml:lang="en-US" id="id_10140147_1552094_2_1">Investments [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentTypeCategorizationMember" xlink:to="us-gaap_InvestmentTypeCategorizationMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_LegalEntityAxis_lbl" xml:lang="en-US" id="id_10140147_1552126_1_1">Legal Entity [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_LegalEntityAxis_lbl" xml:lang="en-US" id="id_10140147_1552126_2_1">Legal Entity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_LengthOfPipeline" xlink:label="utl_LengthOfPipeline"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_LengthOfPipeline_lbl" xml:lang="en-US" id="id_10140147_1738214_3_1">Length of natural gas transmission pipeline.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_LengthOfPipeline_lbl" xml:lang="en-US" id="id_10140147_1738214_1_1">Length Of Pipeline</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_LengthOfPipeline_lbl" xml:lang="en-US" id="id_10140147_1738214_2_1">Length Of Pipeline</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_LengthOfPipeline" xlink:to="utl_LengthOfPipeline_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_LetterOfCreditFacilityAndBankGuaranteesOutstanding" xlink:label="utl_LetterOfCreditFacilityAndBankGuaranteesOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_LetterOfCreditFacilityAndBankGuaranteesOutstanding_lbl" xml:lang="en-US" id="id_10140147_1733367_3_1">Corporate guarantees on energy and natural gas storage management contracts entered into by the Company's distribution utilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_LetterOfCreditFacilityAndBankGuaranteesOutstanding_lbl" xml:lang="en-US" id="id_10140147_1733367_1_1">Letter Of Credit Facility And Bank Guarantees Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_LetterOfCreditFacilityAndBankGuaranteesOutstanding_lbl" xml:lang="en-US" id="id_10140147_1733367_2_1">Guarantee outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_LetterOfCreditFacilityAndBankGuaranteesOutstanding" xlink:to="utl_LetterOfCreditFacilityAndBankGuaranteesOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="us-gaap_LettersOfCreditOutstandingAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LettersOfCreditOutstandingAmount_lbl" xml:lang="en-US" id="id_10140147_1562898_1_1">Letters of Credit Outstanding, Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LettersOfCreditOutstandingAmount_lbl" xml:lang="en-US" id="id_10140147_1562898_2_1">Letters of Credit Outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LettersOfCreditOutstandingAmount" xlink:to="us-gaap_LettersOfCreditOutstandingAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US" id="id_10140147_1561155_1_1">Liabilities and Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US" id="id_10140147_1561155_6_1">TOTAL LIABILITIES AND CAPITALIZATION</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_10140147_1552180_1_1">Liabilities and Equity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_10140147_1552180_2_1">LIABILITIES AND CAPITALIZATION:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US" id="id_10140147_1563831_1_1">Liabilities, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US" id="id_10140147_1563831_6_1">Total Current Liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="us-gaap_LiabilitiesCurrentAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US" id="id_10140147_1558849_1_1">Liabilities, Current [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US" id="id_10140147_1558849_2_1">Current Liabilities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="us-gaap_LiabilitiesNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1562020_1_1">Liabilities, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1562020_6_1">Total Noncurrent Liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesNoncurrent" xlink:to="us-gaap_LiabilitiesNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract_lbl" xml:lang="en-US" id="id_10140147_1552182_1_1">Liabilities, Noncurrent [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract_lbl" xml:lang="en-US" id="id_10140147_1552182_2_1">Noncurrent Liabilities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesNoncurrentAbstract" xlink:to="us-gaap_LiabilitiesNoncurrentAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityExpirationDate1" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1_lbl" xml:lang="en-US" id="id_10140147_1555599_1_1">Line of Credit Facility, Expiration Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1_lbl" xml:lang="en-US" id="id_10140147_1555599_2_1">Revolving credit facility termination date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityExpirationDate1" xlink:to="us-gaap_LineOfCreditFacilityExpirationDate1_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems" xlink:label="us-gaap_LineOfCreditFacilityLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityLineItems_lbl" xml:lang="en-US" id="id_10140147_1552238_1_1">Line of Credit Facility [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityLineItems_lbl" xml:lang="en-US" id="id_10140147_1552238_2_1">Line of Credit Facility [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityLineItems" xlink:to="us-gaap_LineOfCreditFacilityLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xml:lang="en-US" id="id_10140147_1561998_1_1">Line of Credit Facility, Maximum Borrowing Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xml:lang="en-US" id="id_10140147_1561998_2_1">Revolving credit facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xml:lang="en-US" id="id_10140147_1561998_12_1">Revolving credit facility, limit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_LineOfCreditFacilityMaximumIncreaseToAggregateCommitments" xlink:label="utl_LineOfCreditFacilityMaximumIncreaseToAggregateCommitments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_LineOfCreditFacilityMaximumIncreaseToAggregateCommitments_lbl" xml:lang="en-US" id="id_10140147_1725364_3_1">Line Of Credit Facility Maximum Increase To Aggregate Commitments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_LineOfCreditFacilityMaximumIncreaseToAggregateCommitments_lbl" xml:lang="en-US" id="id_10140147_1725364_1_1">Line Of Credit Facility Maximum Increase To Aggregate Commitments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_LineOfCreditFacilityMaximumIncreaseToAggregateCommitments_lbl" xml:lang="en-US" id="id_10140147_1725364_2_1">Credit Facility by an aggregate additional amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_LineOfCreditFacilityMaximumIncreaseToAggregateCommitments" xlink:to="utl_LineOfCreditFacilityMaximumIncreaseToAggregateCommitments_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xml:lang="en-US" id="id_10140147_1563814_1_1">Line of Credit Facility, Remaining Borrowing Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xml:lang="en-US" id="id_10140147_1563814_2_1">Available revolving credit facility</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityTable" xlink:label="us-gaap_LineOfCreditFacilityTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityTable_lbl" xml:lang="en-US" id="id_10140147_1555605_1_1">Line of Credit Facility [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityTable_lbl" xml:lang="en-US" id="id_10140147_1555605_2_1">Line of Credit Facility [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityTable" xlink:to="us-gaap_LineOfCreditFacilityTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" xml:lang="en-US" id="id_10140147_1555627_1_1">London Interbank Offered Rate (LIBOR) [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" xml:lang="en-US" id="id_10140147_1555627_2_1">London Interbank Offered Rate (LIBOR)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:to="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebt" xlink:label="us-gaap_LongTermDebt"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US" id="id_10140147_1563803_1_1">Long-term Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US" id="id_10140147_1563803_2_1">Long-Term Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US" id="id_10140147_1563803_6_1">Long-Term Debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebt" xlink:to="us-gaap_LongTermDebt_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="us-gaap_LongTermDebtCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xml:lang="en-US" id="id_10140147_1563791_1_1">Long-term Debt, Current Maturities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xml:lang="en-US" id="id_10140147_1563791_2_1">Less: Current Portion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xml:lang="en-US" id="id_10140147_1563791_12_1">Long-Term Debt, Current Portion</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtCurrent" xlink:to="us-gaap_LongTermDebtCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="us-gaap_LongTermDebtFairValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtFairValue_lbl" xml:lang="en-US" id="id_10140147_1561109_1_1">Long-term Debt, Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtFairValue_lbl" xml:lang="en-US" id="id_10140147_1561109_2_1">Estimated Fair Value of Long-Term Debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtFairValue" xlink:to="us-gaap_LongTermDebtFairValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="us-gaap_LongTermDebtNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1561976_1_1">Long-term Debt, Excluding Current Maturities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1561976_2_1">Long-Term Debt, Less Current Portion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1561976_12_1">Total Long-term Debt, Less Current Portion</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtNoncurrent" xlink:to="us-gaap_LongTermDebtNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LossContingenciesByNatureOfContingencyAxis_lbl" xml:lang="en-US" id="id_10140147_1555661_1_1">Loss Contingency Nature [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LossContingenciesByNatureOfContingencyAxis_lbl" xml:lang="en-US" id="id_10140147_1555661_2_1">Loss Contingency Nature</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:to="us-gaap_LossContingenciesByNatureOfContingencyAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="us-gaap_LossContingencyNatureDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LossContingencyNatureDomain_lbl" xml:lang="en-US" id="id_10140147_1558976_1_1">Loss Contingency, Nature [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LossContingencyNatureDomain_lbl" xml:lang="en-US" id="id_10140147_1558976_2_1">Loss Contingency, Nature [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LossContingencyNatureDomain" xlink:to="us-gaap_LossContingencyNatureDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MajorCustomersAxis" xlink:label="us-gaap_MajorCustomersAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MajorCustomersAxis_lbl" xml:lang="en-US" id="id_10140147_1558989_1_1">Customer [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MajorCustomersAxis_lbl" xml:lang="en-US" id="id_10140147_1558989_2_1">Customer [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MajorCustomersAxis" xlink:to="us-gaap_MajorCustomersAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MarketableSecuritiesPolicy" xlink:label="us-gaap_MarketableSecuritiesPolicy"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MarketableSecuritiesPolicy_lbl" xml:lang="en-US" id="id_10140147_1559010_1_1">Marketable Securities, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MarketableSecuritiesPolicy_lbl" xml:lang="en-US" id="id_10140147_1559010_2_1">Investments in Marketable Securities</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MarketableSecuritiesTextBlock_lbl" xml:lang="en-US" id="id_10140147_1555704_1_1">Marketable Securities [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MarketableSecuritiesTextBlock_lbl" xml:lang="en-US" id="id_10140147_1555704_2_1">Fair Value of Marketable Securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MarketableSecuritiesTextBlock" xlink:to="us-gaap_MarketableSecuritiesTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaximumMember" xlink:label="us-gaap_MaximumMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MaximumMember_lbl" xml:lang="en-US" id="id_10140147_1552364_1_1">Maximum [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MaximumMember_lbl" xml:lang="en-US" id="id_10140147_1552364_2_1">Maximum</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MaximumMember" xlink:to="us-gaap_MaximumMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd#stpr_ME" xlink:label="stpr_ME"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="stpr_ME_lbl" xml:lang="en-US" id="id_10140147_1555713_1_1">MAINE</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="stpr_ME_lbl" xml:lang="en-US" id="id_10140147_1555713_2_1">Maine</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_ME" xlink:to="stpr_ME_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinimumMember" xlink:label="us-gaap_MinimumMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinimumMember_lbl" xml:lang="en-US" id="id_10140147_1555723_1_1">Minimum [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MinimumMember_lbl" xml:lang="en-US" id="id_10140147_1555723_2_1">Minimum</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinimumMember" xlink:to="us-gaap_MinimumMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="us-gaap_NameOfMajorCustomerDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NameOfMajorCustomerDomain_lbl" xml:lang="en-US" id="id_10140147_1552462_1_1">Customer [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NameOfMajorCustomerDomain_lbl" xml:lang="en-US" id="id_10140147_1552462_2_1">Customer [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NameOfMajorCustomerDomain" xlink:to="us-gaap_NameOfMajorCustomerDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_NaturalGasAndOilProvedReservesMultiplierToCoverFairValueOfTransactionsOutstanding" xlink:label="utl_NaturalGasAndOilProvedReservesMultiplierToCoverFairValueOfTransactionsOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_NaturalGasAndOilProvedReservesMultiplierToCoverFairValueOfTransactionsOutstanding_lbl" xml:lang="en-US" id="id_10140147_1657514_3_1">Amount of natural gas purchase contracts outstanding under hedging program.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_NaturalGasAndOilProvedReservesMultiplierToCoverFairValueOfTransactionsOutstanding_lbl" xml:lang="en-US" id="id_10140147_1657514_1_1">Natural Gas And Oil Proved Reserves Multiplier To Cover Fair Value Of Transactions Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_NaturalGasAndOilProvedReservesMultiplierToCoverFairValueOfTransactionsOutstanding_lbl" xml:lang="en-US" id="id_10140147_1657514_2_1">Number of Natural Gas Storage Outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_NaturalGasAndOilProvedReservesMultiplierToCoverFairValueOfTransactionsOutstanding" xlink:to="utl_NaturalGasAndOilProvedReservesMultiplierToCoverFairValueOfTransactionsOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NaturalGasLiquidsReservesMember" xlink:label="us-gaap_NaturalGasLiquidsReservesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NaturalGasLiquidsReservesMember_lbl" xml:lang="en-US" id="id_10140147_1555780_1_1">Natural Gas Liquids [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NaturalGasLiquidsReservesMember_lbl" xml:lang="en-US" id="id_10140147_1555780_2_1">Liquefied Natural Gas &amp; Other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NaturalGasLiquidsReservesMember" xlink:to="us-gaap_NaturalGasLiquidsReservesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_NatureOfOperationsPolicyTextBlock" xlink:label="utl_NatureOfOperationsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_NatureOfOperationsPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1622814_3_1">Description of the Company and its subsidiaries businesses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_NatureOfOperationsPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1622814_1_1">Nature of Operations [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_NatureOfOperationsPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1622814_2_1">Nature of Operations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_NatureOfOperationsPolicyTextBlock" xlink:to="utl_NatureOfOperationsPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_lbl" xml:lang="en-US" id="id_10140147_1566883_1_1">Net Cash Provided by (Used in) Financing Activities, Continuing Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_lbl" xml:lang="en-US" id="id_10140147_1566883_6_1">Cash (Used in) Financing Activities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_lbl" xml:lang="en-US" id="id_10140147_1552479_1_1">Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_lbl" xml:lang="en-US" id="id_10140147_1552479_2_1">Financing Activities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_lbl" xml:lang="en-US" id="id_10140147_1564875_1_1">Net Cash Provided by (Used in) Investing Activities, Continuing Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_lbl" xml:lang="en-US" id="id_10140147_1564875_2_1">Cash (Used in) Investing Activities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_lbl" xml:lang="en-US" id="id_10140147_1552480_1_1">Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_lbl" xml:lang="en-US" id="id_10140147_1552480_2_1">Investing Activities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl" xml:lang="en-US" id="id_10140147_1549194_1_1">Net Cash Provided by (Used in) Operating Activities, Continuing Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl" xml:lang="en-US" id="id_10140147_1549194_6_1">Cash Provided by Operating Activities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_lbl" xml:lang="en-US" id="id_10140147_1549195_1_1">Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_lbl" xml:lang="en-US" id="id_10140147_1549195_2_1">Operating Activities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US" id="id_10140147_1561938_1_1">Net Income (Loss) Attributable to Parent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US" id="id_10140147_1561938_2_1">Net Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US" id="id_10140147_1561938_6_1">Net Income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xml:lang="en-US" id="id_10140147_1563748_1_1">Net Income (Loss) Available to Common Stockholders, Basic</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xml:lang="en-US" id="id_10140147_1563748_2_1">Segment Profit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_NetOperatingLossCarryforwardsExpirationYear" xlink:label="utl_NetOperatingLossCarryforwardsExpirationYear"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_NetOperatingLossCarryforwardsExpirationYear_lbl" xml:lang="en-US" id="id_10140147_1639464_3_1">Net Operating Loss Carryforwards, Expiration Year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_NetOperatingLossCarryforwardsExpirationYear_lbl" xml:lang="en-US" id="id_10140147_1639464_1_1">Net Operating Loss Carryforwards, Expiration Year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_NetOperatingLossCarryforwardsExpirationYear_lbl" xml:lang="en-US" id="id_10140147_1639464_2_1">NOL carryforward assets expiration date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_NetOperatingLossCarryforwardsExpirationYear" xlink:to="utl_NetOperatingLossCarryforwardsExpirationYear_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_NewEnglandMember" xlink:label="utl_NewEnglandMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_NewEnglandMember_lbl" xml:lang="en-US" id="id_10140147_1713228_3_1">New England [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_NewEnglandMember_lbl" xml:lang="en-US" id="id_10140147_1713228_1_1">New England [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_NewEnglandMember_lbl" xml:lang="en-US" id="id_10140147_1713228_2_1">ISO-NE Obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_NewEnglandMember" xlink:to="utl_NewEnglandMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd#stpr_NH" xlink:label="stpr_NH"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="stpr_NH_lbl" xml:lang="en-US" id="id_10140147_1555814_1_1">NEW HAMPSHIRE</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="stpr_NH_lbl" xml:lang="en-US" id="id_10140147_1555814_2_1">New Hampshire</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_NH" xlink:to="stpr_NH_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_NoncashInvestingActivityAbstract" xlink:label="utl_NoncashInvestingActivityAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_NoncashInvestingActivityAbstract_lbl" xml:lang="en-US" id="id_10140147_1669574_3_1">Noncash Investing Activity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_NoncashInvestingActivityAbstract_lbl" xml:lang="en-US" id="id_10140147_1669574_1_1">Noncash Investing Activity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_NoncashInvestingActivityAbstract_lbl" xml:lang="en-US" id="id_10140147_1669574_2_1">Non-cash Investing Activity:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_NoncashInvestingActivityAbstract" xlink:to="utl_NoncashInvestingActivityAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="us-gaap_NondesignatedMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NondesignatedMember_lbl" xml:lang="en-US" id="id_10140147_1555832_1_1">Not Designated as Hedging Instrument [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NondesignatedMember_lbl" xml:lang="en-US" id="id_10140147_1555832_2_1">Not Designated as Hedging Instruments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NondesignatedMember" xlink:to="us-gaap_NondesignatedMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_NonServiceMember" xlink:label="utl_NonServiceMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_NonServiceMember_lbl" xml:lang="en-US" id="id_10140147_1774260_3_1">Non service.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_NonServiceMember_lbl" xml:lang="en-US" id="id_10140147_1774260_1_1">Non Service [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_NonServiceMember_lbl" xml:lang="en-US" id="id_10140147_1774260_2_1">Non Service</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_NonServiceMember" xlink:to="utl_NonServiceMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_NorthernUtilitiesIncMember" xlink:label="utl_NorthernUtilitiesIncMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_NorthernUtilitiesIncMember_lbl" xml:lang="en-US" id="id_10140147_1685317_3_1">Northern Utilities Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_NorthernUtilitiesIncMember_lbl" xml:lang="en-US" id="id_10140147_1685317_1_1">Northern Utilities Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_NorthernUtilitiesIncMember_lbl" xml:lang="en-US" id="id_10140147_1685317_2_1">Northern Utilities Inc</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_NorthernUtilitiesIncMember" xlink:to="utl_NorthernUtilitiesIncMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_NumberOfNewCustomers" xlink:label="utl_NumberOfNewCustomers"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_NumberOfNewCustomers_lbl" xml:lang="en-US" id="id_10140147_1639438_3_1">Number Of New Customers</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_NumberOfNewCustomers_lbl" xml:lang="en-US" id="id_10140147_1639438_1_1">Number Of New Customers</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_NumberOfNewCustomers_lbl" xml:lang="en-US" id="id_10140147_1639438_2_1">Number of new customers</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_NumberOfNewCustomers" xlink:to="utl_NumberOfNewCustomers_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NumberOfStatesInWhichEntityOperates" xlink:label="us-gaap_NumberOfStatesInWhichEntityOperates"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NumberOfStatesInWhichEntityOperates_lbl" xml:lang="en-US" id="id_10140147_1552533_1_1">Number of States in which Entity Operates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NumberOfStatesInWhichEntityOperates_lbl" xml:lang="en-US" id="id_10140147_1552533_2_1">Number of states with electric distribution companies</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfStatesInWhichEntityOperates" xlink:to="us-gaap_NumberOfStatesInWhichEntityOperates_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_NumberOfSubsidiaries" xlink:label="utl_NumberOfSubsidiaries"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_NumberOfSubsidiaries_lbl" xml:lang="en-US" id="id_10140147_1600916_3_1">Number of Subsidiaries.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_NumberOfSubsidiaries_lbl" xml:lang="en-US" id="id_10140147_1600916_1_1">Number of Subsidiaries</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_NumberOfSubsidiaries_lbl" xml:lang="en-US" id="id_10140147_1600916_2_1">Number of Subsidiaries</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_NumberOfSubsidiaries" xlink:to="utl_NumberOfSubsidiaries_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ObligationsMember" xlink:label="us-gaap_ObligationsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ObligationsMember_lbl" xml:lang="en-US" id="id_10140147_1549243_1_1">Obligations [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ObligationsMember_lbl" xml:lang="en-US" id="id_10140147_1549243_2_1">Exchange Gas Obligation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ObligationsMember" xlink:to="us-gaap_ObligationsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_OffshoreEnergyMember" xlink:label="utl_OffshoreEnergyMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_OffshoreEnergyMember_lbl" xml:lang="en-US" id="id_10140147_1685695_3_1">Offshore Energy [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_OffshoreEnergyMember_lbl" xml:lang="en-US" id="id_10140147_1685695_1_1">Offshore Energy [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_OffshoreEnergyMember_lbl" xml:lang="en-US" id="id_10140147_1685695_2_1">Offshore Wind Energy</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_OffshoreEnergyMember" xlink:to="utl_OffshoreEnergyMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="us-gaap_OperatingExpensesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xml:lang="en-US" id="id_10140147_1552570_1_1">Operating Expenses [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xml:lang="en-US" id="id_10140147_1552570_2_1">Operating Expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpensesAbstract" xlink:to="us-gaap_OperatingExpensesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US" id="id_10140147_1561916_1_1">Operating Income (Loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US" id="id_10140147_1561916_6_1">Operating Income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_OperatingRevenuesLineItems" xlink:label="utl_OperatingRevenuesLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_OperatingRevenuesLineItems_lbl" xml:lang="en-US" id="id_10140147_1772806_3_1">Operating revenues.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_OperatingRevenuesLineItems_lbl" xml:lang="en-US" id="id_10140147_1772806_1_1">Operating Revenues [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_OperatingRevenuesLineItems_lbl" xml:lang="en-US" id="id_10140147_1772806_2_1">Operating Revenues [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_OperatingRevenuesLineItems" xlink:to="utl_OperatingRevenuesLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_OperatingRevenueTable" xlink:label="utl_OperatingRevenueTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_OperatingRevenueTable_lbl" xml:lang="en-US" id="id_10140147_1772807_3_1">Operating Revenue [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_OperatingRevenueTable_lbl" xml:lang="en-US" id="id_10140147_1772807_1_1">Operating Revenue [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_OperatingRevenueTable_lbl" xml:lang="en-US" id="id_10140147_1772807_2_1">Operating Revenue [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_OperatingRevenueTable" xlink:to="utl_OperatingRevenueTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="us-gaap_OtherAssetsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssetsMember_lbl" xml:lang="en-US" id="id_10140147_1549290_1_1">Other Assets [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherAssetsMember_lbl" xml:lang="en-US" id="id_10140147_1549290_2_1">Other Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsMember" xlink:to="us-gaap_OtherAssetsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="us-gaap_OtherAssetsNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1567894_1_1">Other Assets, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1567894_2_1">Other Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_OtherCustomerMember" xlink:label="utl_OtherCustomerMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_OtherCustomerMember_lbl" xml:lang="en-US" id="id_10140147_1684199_3_1">Other customer.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_OtherCustomerMember_lbl" xml:lang="en-US" id="id_10140147_1684199_1_1">Other Customer [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_OtherCustomerMember_lbl" xml:lang="en-US" id="id_10140147_1684199_2_1">Other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_OtherCustomerMember" xlink:to="utl_OtherCustomerMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherIncomeAndExpensesAbstract" xlink:label="us-gaap_OtherIncomeAndExpensesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherIncomeAndExpensesAbstract_lbl" xml:lang="en-US" id="id_10140147_1552619_1_1">Other Income and Expenses [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherIncomeAndExpensesAbstract_lbl" xml:lang="en-US" id="id_10140147_1552619_2_1">Other Income and Expenses [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherIncomeAndExpensesAbstract" xlink:to="us-gaap_OtherIncomeAndExpensesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="us-gaap_OtherLiabilitiesCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_10140147_1562747_1_1">Other Liabilities, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_10140147_1562747_2_1">Other Current Liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilitiesCurrent" xlink:to="us-gaap_OtherLiabilitiesCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="us-gaap_OtherLiabilitiesNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1560991_1_1">Other Liabilities, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1560991_2_1">Other Noncurrent Liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="us-gaap_OtherLiabilitiesNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="us-gaap_OtherNonoperatingIncomeExpense"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xml:lang="en-US" id="id_10140147_1563684_1_1">Other Nonoperating Income (Expense)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xml:lang="en-US" id="id_10140147_1563684_14_1">Other Expense (Income), net</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="us-gaap_OtherNonoperatingIncomeExpense_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_lbl" xml:lang="en-US" id="id_10140147_1559249_1_1">Other Postretirement Benefits Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_lbl" xml:lang="en-US" id="id_10140147_1559249_2_1">Other Postretirement Benefit Plans, Defined Benefit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:to="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherReceivablesNetCurrent" xlink:label="us-gaap_OtherReceivablesNetCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherReceivablesNetCurrent_lbl" xml:lang="en-US" id="id_10140147_1566953_1_1">Other Receivables, Net, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherReceivablesNetCurrent_lbl" xml:lang="en-US" id="id_10140147_1566953_2_1">Exchange Gas Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OtherReceivablesNetCurrent_lbl" xml:lang="en-US" id="id_10140147_1566953_12_1">Total Exchange Gas Receivable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherReceivablesNetCurrent" xlink:to="us-gaap_OtherReceivablesNetCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherSalesRevenueNet" xlink:label="us-gaap_OtherSalesRevenueNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherSalesRevenueNet_lbl" xml:lang="en-US" id="id_10140147_1560979_1_1">Other Revenue, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherSalesRevenueNet_lbl" xml:lang="en-US" id="id_10140147_1560979_2_1">Other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherSalesRevenueNet" xlink:to="us-gaap_OtherSalesRevenueNet_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_OtherSubsidiariesMember" xlink:label="utl_OtherSubsidiariesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_OtherSubsidiariesMember_lbl" xml:lang="en-US" id="id_10140147_1640944_3_1">Other Subsidiaries [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_OtherSubsidiariesMember_lbl" xml:lang="en-US" id="id_10140147_1640944_1_1">Other Subsidiaries [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_OtherSubsidiariesMember_lbl" xml:lang="en-US" id="id_10140147_1640944_2_1">Unitil Service; Unitil Realty; and Unitil Resources</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_OtherSubsidiariesMember" xlink:to="utl_OtherSubsidiariesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsOfDividends" xlink:label="us-gaap_PaymentsOfDividends"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfDividends_lbl" xml:lang="en-US" id="id_10140147_1562705_1_1">Payments of Dividends</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsOfDividends_lbl" xml:lang="en-US" id="id_10140147_1562705_14_1">Dividends Paid</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfDividends" xlink:to="us-gaap_PaymentsOfDividends_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_10140147_1560931_1_1">Payments to Acquire Property, Plant, and Equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_10140147_1560931_2_1">Capital Expenditures</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_10140147_1560931_14_1">Property, Plant and Equipment Additions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent" xlink:label="us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1562679_1_1">Liability, Pension and Other Postretirement and Postemployment Benefits, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1562679_2_1">Retirement Benefit Obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent" xlink:to="us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock" xlink:label="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_10140147_1556004_1_1">Pension and Other Postretirement Benefits Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_10140147_1556004_2_1">RETIREMENT BENEFIT OBLIGATIONS</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock" xlink:to="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy" xlink:label="us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy_lbl" xml:lang="en-US" id="id_10140147_1552703_1_1">Pension and Other Postretirement Plans, Nonpension Benefits, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy_lbl" xml:lang="en-US" id="id_10140147_1552703_2_1">Retirement Benefit Costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy" xlink:to="us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PensionPlansDefinedBenefitMember_lbl" xml:lang="en-US" id="id_10140147_1552705_1_1">Pension Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PensionPlansDefinedBenefitMember_lbl" xml:lang="en-US" id="id_10140147_1552705_2_1">Pension Plans</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PensionPlansDefinedBenefitMember" xlink:to="us-gaap_PensionPlansDefinedBenefitMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCashWhenSettled" xlink:label="utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCashWhenSettled"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCashWhenSettled_lbl" xml:lang="en-US" id="id_10140147_1600443_3_1">Percentage of fully-vested restricted stock units that Directors will receive in cash when settled.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCashWhenSettled_lbl" xml:lang="en-US" id="id_10140147_1600443_1_1">Percentage of Fully Vested Restricted Stock Units That Directors will Receive in Cash when Settled</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCashWhenSettled_lbl" xml:lang="en-US" id="id_10140147_1600443_2_1">Percentage of fully-vested restricted stock units that directors will receive in cash when settled</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCashWhenSettled" xlink:to="utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCashWhenSettled_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCommonSharesWhenSettled" xlink:label="utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCommonSharesWhenSettled"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCommonSharesWhenSettled_lbl" xml:lang="en-US" id="id_10140147_1677557_3_1">Percentage of fully-vested restricted stock units that Directors will receive in common shares when settled.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCommonSharesWhenSettled_lbl" xml:lang="en-US" id="id_10140147_1677557_1_1">Percentage of Fully Vested Restricted Stock Units That Directors will Receive in Common Shares when Settled</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCommonSharesWhenSettled_lbl" xml:lang="en-US" id="id_10140147_1677557_2_1">Percentage of fully-vested restricted stock units that directors will receive in common shares when settled</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCommonSharesWhenSettled" xlink:to="utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCommonSharesWhenSettled_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PercentageOfSalesVolume" xlink:label="utl_PercentageOfSalesVolume"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PercentageOfSalesVolume_lbl" xml:lang="en-US" id="id_10140147_1615400_3_1">Percentage Of Sales Volume</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PercentageOfSalesVolume_lbl" xml:lang="en-US" id="id_10140147_1615400_1_1">Percentage Of Sales Volume</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PercentageOfSalesVolume_lbl" xml:lang="en-US" id="id_10140147_1615400_2_1">Percentage of total sales volumes revenue subject to RDM</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PercentageOfSalesVolume" xlink:to="utl_PercentageOfSalesVolume_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PercentageOfWaiverApproved" xlink:label="utl_PercentageOfWaiverApproved"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PercentageOfWaiverApproved_lbl" xml:lang="en-US" id="id_10140147_1765981_3_1">Percentage of waiver approved.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PercentageOfWaiverApproved_lbl" xml:lang="en-US" id="id_10140147_1765981_1_1">Percentage Of Waiver Approved</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PercentageOfWaiverApproved_lbl" xml:lang="en-US" id="id_10140147_1765981_2_1">Percentage of waiver approved on annual changes in the revenue requirement eligible for recovery</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PercentageOfWaiverApproved" xlink:to="utl_PercentageOfWaiverApproved_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PercentageOfWaiverSought" xlink:label="utl_PercentageOfWaiverSought"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PercentageOfWaiverSought_lbl" xml:lang="en-US" id="id_10140147_1696211_3_1">Percentage Of Waiver Sought</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PercentageOfWaiverSought_lbl" xml:lang="en-US" id="id_10140147_1696211_1_1">Percentage Of Waiver Sought</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PercentageOfWaiverSought_lbl" xml:lang="en-US" id="id_10140147_1696211_2_1">Percentage of waiver sought on annual changes in the revenue requirement eligible for recovery</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PercentageOfWaiverSought" xlink:to="utl_PercentageOfWaiverSought_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PeriodFiveMember" xlink:label="utl_PeriodFiveMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PeriodFiveMember_lbl" xml:lang="en-US" id="id_10140147_1625251_3_1">Period 5 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PeriodFiveMember_lbl" xml:lang="en-US" id="id_10140147_1625251_1_1">Period 5 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PeriodFiveMember_lbl" xml:lang="en-US" id="id_10140147_1625251_2_1">Recovered over the next seven years</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PeriodFiveMember" xlink:to="utl_PeriodFiveMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PeriodTypeAxis" xlink:label="utl_PeriodTypeAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PeriodTypeAxis_lbl" xml:lang="en-US" id="id_10140147_1682023_3_1">Period Type [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PeriodTypeAxis_lbl" xml:lang="en-US" id="id_10140147_1682023_1_1">Period Type [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PeriodTypeAxis_lbl" xml:lang="en-US" id="id_10140147_1682023_2_1">Period Type [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PeriodTypeAxis" xlink:to="utl_PeriodTypeAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PeriodTypeDomain" xlink:label="utl_PeriodTypeDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PeriodTypeDomain_lbl" xml:lang="en-US" id="id_10140147_1686786_3_1">Period Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PeriodTypeDomain_lbl" xml:lang="en-US" id="id_10140147_1686786_1_1">Period Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PeriodTypeDomain_lbl" xml:lang="en-US" id="id_10140147_1686786_2_1">Period Type [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PeriodTypeDomain" xlink:to="utl_PeriodTypeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PermanentAdjustmentForRateIncrease" xlink:label="utl_PermanentAdjustmentForRateIncrease"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PermanentAdjustmentForRateIncrease_lbl" xml:lang="en-US" id="id_10140147_1669455_3_1">Permanent adjustment for rate Increase.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PermanentAdjustmentForRateIncrease_lbl" xml:lang="en-US" id="id_10140147_1669455_1_1">Permanent Adjustment for Rate Increase</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PermanentAdjustmentForRateIncrease_lbl" xml:lang="en-US" id="id_10140147_1669455_2_1">Permanent rate increase</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PermanentAdjustmentForRateIncrease" xlink:to="utl_PermanentAdjustmentForRateIncrease_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PostretirementBenefitMember" xlink:label="utl_PostretirementBenefitMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PostretirementBenefitMember_lbl" xml:lang="en-US" id="id_10140147_1712186_3_1">Postretirement Benefit [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PostretirementBenefitMember_lbl" xml:lang="en-US" id="id_10140147_1712186_1_1">Postretirement Benefit [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PostretirementBenefitMember_lbl" xml:lang="en-US" id="id_10140147_1712186_2_1">Retirement Benefits</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PostretirementBenefitMember" xlink:to="utl_PostretirementBenefitMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PotentialRegulatedOperatingRevenue" xlink:label="utl_PotentialRegulatedOperatingRevenue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PotentialRegulatedOperatingRevenue_lbl" xml:lang="en-US" id="id_10140147_1644429_3_1">Potential Regulated Operating Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PotentialRegulatedOperatingRevenue_lbl" xml:lang="en-US" id="id_10140147_1644429_1_1">Potential Regulated Operating Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PotentialRegulatedOperatingRevenue_lbl" xml:lang="en-US" id="id_10140147_1644429_2_1">Potential regulated operating revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PotentialRegulatedOperatingRevenue" xlink:to="utl_PotentialRegulatedOperatingRevenue_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PowerCapacityFacilityForSmallCustomers" xlink:label="utl_PowerCapacityFacilityForSmallCustomers"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PowerCapacityFacilityForSmallCustomers_lbl" xml:lang="en-US" id="id_10140147_1765944_3_1">Power capacity facility for small customers.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PowerCapacityFacilityForSmallCustomers_lbl" xml:lang="en-US" id="id_10140147_1765944_1_1">Power Capacity Facility for Small Customers</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PowerCapacityFacilityForSmallCustomers_lbl" xml:lang="en-US" id="id_10140147_1765944_2_1">Power capacity facility for small customers</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PowerCapacityFacilityForSmallCustomers" xlink:to="utl_PowerCapacityFacilityForSmallCustomers_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PowerGenerationCapacity" xlink:label="utl_PowerGenerationCapacity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PowerGenerationCapacity_lbl" xml:lang="en-US" id="id_10140147_1705534_3_1">Power Generation Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PowerGenerationCapacity_lbl" xml:lang="en-US" id="id_10140147_1705534_1_1">Power Generation Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PowerGenerationCapacity_lbl" xml:lang="en-US" id="id_10140147_1705534_2_1">Power generation capacity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PowerGenerationCapacity" xlink:to="utl_PowerGenerationCapacity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreferredStockDividendRatePercentage" xlink:label="us-gaap_PreferredStockDividendRatePercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockDividendRatePercentage_lbl" xml:lang="en-US" id="id_10140147_1559355_1_1">Preferred Stock, Dividend Rate, Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockDividendRatePercentage_lbl" xml:lang="en-US" id="id_10140147_1559355_2_1">Dividend rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockDividendRatePercentage" xlink:to="us-gaap_PreferredStockDividendRatePercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="us-gaap_PreferredStockSharesOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US" id="id_10140147_1549412_1_1">Preferred Stock, Shares Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US" id="id_10140147_1549412_2_1">Preferred stock, outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesOutstanding" xlink:to="us-gaap_PreferredStockSharesOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="us-gaap_PreferredStockValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US" id="id_10140147_1560899_1_1">Preferred Stock, Value, Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US" id="id_10140147_1560899_2_1">Preferred Stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockValue" xlink:to="us-gaap_PreferredStockValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssets" xlink:label="us-gaap_PrepaidExpenseAndOtherAssets"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PrepaidExpenseAndOtherAssets_lbl" xml:lang="en-US" id="id_10140147_1566995_1_1">Prepaid Expense and Other Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PrepaidExpenseAndOtherAssets_lbl" xml:lang="en-US" id="id_10140147_1566995_2_1">Prepayments and Other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrepaidExpenseAndOtherAssets" xlink:to="us-gaap_PrepaidExpenseAndOtherAssets_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US" id="id_10140147_1565019_1_1">Proceeds from Issuance of Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US" id="id_10140147_1565019_2_1">Proceeds from Issuance of Common Stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromLegalSettlements" xlink:label="us-gaap_ProceedsFromLegalSettlements"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromLegalSettlements_lbl" xml:lang="en-US" id="id_10140147_1567027_1_1">Proceeds from Legal Settlements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromLegalSettlements_lbl" xml:lang="en-US" id="id_10140147_1567027_2_1">Pipeline refund received</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromLegalSettlements" xlink:to="us-gaap_ProceedsFromLegalSettlements_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromLinesOfCredit" xlink:label="us-gaap_ProceedsFromLinesOfCredit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromLinesOfCredit_lbl" xml:lang="en-US" id="id_10140147_1567029_1_1">Proceeds from Lines of Credit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromLinesOfCredit_lbl" xml:lang="en-US" id="id_10140147_1567029_2_1">Proceeds from lines of credit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromLinesOfCredit" xlink:to="us-gaap_ProceedsFromLinesOfCredit_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations" xlink:label="utl_ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations_lbl" xml:lang="en-US" id="id_10140147_1577117_3_1">Proceeds from (Repayments of) Debt and Capital Lease Obligations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations_lbl" xml:lang="en-US" id="id_10140147_1577117_1_1">Proceeds from (Repayments of) Debt and Capital Lease Obligations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations_lbl" xml:lang="en-US" id="id_10140147_1577117_2_1">Decrease in Capital Lease Obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations" xlink:to="utl_ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:label="us-gaap_ProceedsFromRepaymentsOfShortTermDebt"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromRepaymentsOfShortTermDebt_lbl" xml:lang="en-US" id="id_10140147_1566073_1_1">Proceeds from (Repayments of) Short-term Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromRepaymentsOfShortTermDebt_lbl" xml:lang="en-US" id="id_10140147_1566073_2_1">Proceeds from (Repayment of) Short-Term Debt, net</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:to="us-gaap_ProceedsFromRepaymentsOfShortTermDebt_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProductOrServiceAxis" xlink:label="us-gaap_ProductOrServiceAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProductOrServiceAxis_lbl" xml:lang="en-US" id="id_10140147_1549463_1_1">Products and Services [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProductOrServiceAxis_lbl" xml:lang="en-US" id="id_10140147_1549463_2_1">Products and Services [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProductOrServiceAxis" xlink:to="us-gaap_ProductOrServiceAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProductsAndServicesDomain" xlink:label="us-gaap_ProductsAndServicesDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProductsAndServicesDomain_lbl" xml:lang="en-US" id="id_10140147_1549464_1_1">Products and Services [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProductsAndServicesDomain_lbl" xml:lang="en-US" id="id_10140147_1549464_2_1">Products and Services [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProductsAndServicesDomain" xlink:to="us-gaap_ProductsAndServicesDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ProductTypeOneMember" xlink:label="utl_ProductTypeOneMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ProductTypeOneMember_lbl" xml:lang="en-US" id="id_10140147_1602528_3_1">Product Type One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ProductTypeOneMember_lbl" xml:lang="en-US" id="id_10140147_1602528_1_1">Product Type One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ProductTypeOneMember_lbl" xml:lang="en-US" id="id_10140147_1602528_2_1">Annual Electric Sales Volume</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ProductTypeOneMember" xlink:to="utl_ProductTypeOneMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ProductTypeTwoMember" xlink:label="utl_ProductTypeTwoMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ProductTypeTwoMember_lbl" xml:lang="en-US" id="id_10140147_1657091_3_1">Product Type Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ProductTypeTwoMember_lbl" xml:lang="en-US" id="id_10140147_1657091_1_1">Product Type Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ProductTypeTwoMember_lbl" xml:lang="en-US" id="id_10140147_1657091_2_1">Annual Natural Gas Sales Volume</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ProductTypeTwoMember" xlink:to="utl_ProductTypeTwoMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1559432_1_1">Property, Plant and Equipment, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1559432_2_1">Utility Plant</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesApprovedDebtCapitalStructurePercentage" xlink:label="us-gaap_PublicUtilitiesApprovedDebtCapitalStructurePercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesApprovedDebtCapitalStructurePercentage_lbl" xml:lang="en-US" id="id_10140147_1559463_1_1">Public Utilities, Approved Debt Capital Structure, Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesApprovedDebtCapitalStructurePercentage_lbl" xml:lang="en-US" id="id_10140147_1559463_2_1">Percentage of approved return on equity, reflecting on debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesApprovedDebtCapitalStructurePercentage" xlink:to="us-gaap_PublicUtilitiesApprovedDebtCapitalStructurePercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesApprovedEquityCapitalStructurePercentage" xlink:label="us-gaap_PublicUtilitiesApprovedEquityCapitalStructurePercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesApprovedEquityCapitalStructurePercentage_lbl" xml:lang="en-US" id="id_10140147_1559464_1_1">Public Utilities, Approved Equity Capital Structure, Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesApprovedEquityCapitalStructurePercentage_lbl" xml:lang="en-US" id="id_10140147_1559464_2_1">Percentage of approved return on equity, reflecting on equity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesApprovedEquityCapitalStructurePercentage" xlink:to="us-gaap_PublicUtilitiesApprovedEquityCapitalStructurePercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PublicUtilitiesApprovedRateIncreaseDecreaseEffectiveDate" xlink:label="utl_PublicUtilitiesApprovedRateIncreaseDecreaseEffectiveDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PublicUtilitiesApprovedRateIncreaseDecreaseEffectiveDate_lbl" xml:lang="en-US" id="id_10140147_1766902_3_1">Public utilities approved rate increase decrease effective date.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PublicUtilitiesApprovedRateIncreaseDecreaseEffectiveDate_lbl" xml:lang="en-US" id="id_10140147_1766902_1_1">Public Utilities Approved Rate Increase Decrease Effective Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PublicUtilitiesApprovedRateIncreaseDecreaseEffectiveDate_lbl" xml:lang="en-US" id="id_10140147_1766902_2_1">Amendment effective date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PublicUtilitiesApprovedRateIncreaseDecreaseEffectiveDate" xlink:to="utl_PublicUtilitiesApprovedRateIncreaseDecreaseEffectiveDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage" xlink:label="us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_lbl" xml:lang="en-US" id="id_10140147_1559448_1_1">Public Utilities, Approved Return on Equity, Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_lbl" xml:lang="en-US" id="id_10140147_1559448_2_1">Percentage of approved return on equity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage" xlink:to="us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesDisclosureTextBlock" xlink:label="us-gaap_PublicUtilitiesDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesDisclosureTextBlock_lbl" xml:lang="en-US" id="id_10140147_1556121_1_1">Public Utilities Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesDisclosureTextBlock_lbl" xml:lang="en-US" id="id_10140147_1556121_2_1">REGULATORY MATTERS</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesDisclosureTextBlock" xlink:to="us-gaap_PublicUtilitiesDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesInventoryAxis" xlink:label="us-gaap_PublicUtilitiesInventoryAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesInventoryAxis_lbl" xml:lang="en-US" id="id_10140147_1556124_1_1">Inventory [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesInventoryAxis_lbl" xml:lang="en-US" id="id_10140147_1556124_2_1">Inventory [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesInventoryAxis" xlink:to="us-gaap_PublicUtilitiesInventoryAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesInventoryLineItems" xlink:label="us-gaap_PublicUtilitiesInventoryLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesInventoryLineItems_lbl" xml:lang="en-US" id="id_10140147_1549496_1_1">Public Utilities, Inventory [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesInventoryLineItems_lbl" xml:lang="en-US" id="id_10140147_1549496_2_1">Public Utilities, Inventory [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesInventoryLineItems" xlink:to="us-gaap_PublicUtilitiesInventoryLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesInventoryNaturalGasMember" xlink:label="us-gaap_PublicUtilitiesInventoryNaturalGasMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesInventoryNaturalGasMember_lbl" xml:lang="en-US" id="id_10140147_1559457_1_1">Public Utilities, Inventory, Natural Gas [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesInventoryNaturalGasMember_lbl" xml:lang="en-US" id="id_10140147_1559457_2_1">Natural Gas</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesInventoryNaturalGasMember" xlink:to="us-gaap_PublicUtilitiesInventoryNaturalGasMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesInventoryPropaneMember" xlink:label="us-gaap_PublicUtilitiesInventoryPropaneMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesInventoryPropaneMember_lbl" xml:lang="en-US" id="id_10140147_1556127_1_1">Propane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesInventoryPropaneMember_lbl" xml:lang="en-US" id="id_10140147_1556127_2_1">Propane</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesInventoryPropaneMember" xlink:to="us-gaap_PublicUtilitiesInventoryPropaneMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesInventoryTable" xlink:label="us-gaap_PublicUtilitiesInventoryTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesInventoryTable_lbl" xml:lang="en-US" id="id_10140147_1559458_1_1">Public Utilities, Inventory [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesInventoryTable_lbl" xml:lang="en-US" id="id_10140147_1559458_2_1">Public Utilities, Inventory [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesInventoryTable" xlink:to="us-gaap_PublicUtilitiesInventoryTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain" xlink:label="us-gaap_PublicUtilitiesInventoryTypeDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesInventoryTypeDomain_lbl" xml:lang="en-US" id="id_10140147_1559459_1_1">Inventory [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesInventoryTypeDomain_lbl" xml:lang="en-US" id="id_10140147_1559459_2_1">Inventory [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesInventoryTypeDomain" xlink:to="us-gaap_PublicUtilitiesInventoryTypeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesPolicyTextBlock" xlink:label="us-gaap_PublicUtilitiesPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1552845_1_1">Public Utilities, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1552845_2_1">Regulatory Accounting</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesPolicyTextBlock" xlink:to="us-gaap_PublicUtilitiesPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_lbl" xml:lang="en-US" id="id_10140147_1559461_1_1">Public Utilities, Property, Plant and Equipment [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_lbl" xml:lang="en-US" id="id_10140147_1559461_2_1">Utility Plant:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract" xlink:to="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_lbl" xml:lang="en-US" id="id_10140147_1560881_1_1">Public Utilities, Property, Plant and Equipment, Accumulated Depreciation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_lbl" xml:lang="en-US" id="id_10140147_1560881_2_1">Less: Accumulated Depreciation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation" xlink:to="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon_lbl" xml:lang="en-US" id="id_10140147_1568074_1_1">Public Utilities, Property, Plant and Equipment, Common</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon_lbl" xml:lang="en-US" id="id_10140147_1568074_2_1">Common</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon" xlink:to="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress_lbl" xml:lang="en-US" id="id_10140147_1567092_1_1">Public Utilities, Property, Plant and Equipment, Construction Work in Progress</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress_lbl" xml:lang="en-US" id="id_10140147_1567092_2_1">Construction Work in Progress</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress" xlink:to="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_PublicUtilitiesPropertyPlantAndEquipmentGas" xlink:label="utl_PublicUtilitiesPropertyPlantAndEquipmentGas"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_PublicUtilitiesPropertyPlantAndEquipmentGas_lbl" xml:lang="en-US" id="id_10140147_1654219_3_1">Public Utilities Property Plant and Equipment related to Gas Operations.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_PublicUtilitiesPropertyPlantAndEquipmentGas_lbl" xml:lang="en-US" id="id_10140147_1654219_1_1">Public Utilities Property Plant And Equipment Gas</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_PublicUtilitiesPropertyPlantAndEquipmentGas_lbl" xml:lang="en-US" id="id_10140147_1654219_2_1">Gas</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_PublicUtilitiesPropertyPlantAndEquipmentGas" xlink:to="utl_PublicUtilitiesPropertyPlantAndEquipmentGas_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet_lbl" xml:lang="en-US" id="id_10140147_1566090_1_1">Public Utilities, Property, Plant and Equipment, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet_lbl" xml:lang="en-US" id="id_10140147_1566090_6_1">Net Utility Plant</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet" xlink:to="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService_lbl" xml:lang="en-US" id="id_10140147_1568078_1_1">Public Utilities, Property, Plant and Equipment, Plant in Service</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService_lbl" xml:lang="en-US" id="id_10140147_1568078_6_1">Total Utility Plant</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService" xlink:to="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution_lbl" xml:lang="en-US" id="id_10140147_1566094_1_1">Public Utilities, Property, Plant and Equipment, Transmission and Distribution</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution_lbl" xml:lang="en-US" id="id_10140147_1566094_2_1">Electric</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution" xlink:to="us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilityAxis" xlink:label="us-gaap_PublicUtilityAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilityAxis_lbl" xml:lang="en-US" id="id_10140147_1556138_1_1">Public Utility [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilityAxis_lbl" xml:lang="en-US" id="id_10140147_1556138_2_1">Public Utility</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilityAxis" xlink:to="us-gaap_PublicUtilityAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis" xlink:label="us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis_lbl" xml:lang="en-US" id="id_10140147_1556139_1_1">Regulation Status [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis_lbl" xml:lang="en-US" id="id_10140147_1556139_2_1">Regulation Status [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis" xlink:to="us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:label="us-gaap_RangeAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RangeAxis_lbl" xml:lang="en-US" id="id_10140147_1559480_1_1">Range [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RangeAxis_lbl" xml:lang="en-US" id="id_10140147_1559480_2_1">Range</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RangeAxis" xlink:to="us-gaap_RangeAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="us-gaap_RangeMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RangeMember_lbl" xml:lang="en-US" id="id_10140147_1549521_1_1">Range [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RangeMember_lbl" xml:lang="en-US" id="id_10140147_1549521_2_1">Range [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RangeMember" xlink:to="us-gaap_RangeMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_RateAdjustmentMechanismRevenueMember" xlink:label="utl_RateAdjustmentMechanismRevenueMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RateAdjustmentMechanismRevenueMember_lbl" xml:lang="en-US" id="id_10140147_1772804_3_1">Rate adjustment mechanism revenue.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_RateAdjustmentMechanismRevenueMember_lbl" xml:lang="en-US" id="id_10140147_1772804_1_1">Rate Adjustment Mechanism Revenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_RateAdjustmentMechanismRevenueMember_lbl" xml:lang="en-US" id="id_10140147_1772804_2_1">Rate Adjustment Mechanism Revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_RateAdjustmentMechanismRevenueMember" xlink:to="utl_RateAdjustmentMechanismRevenueMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_RateAdjustmentMechanismsMember" xlink:label="utl_RateAdjustmentMechanismsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RateAdjustmentMechanismsMember_lbl" xml:lang="en-US" id="id_10140147_1766872_3_1">Rate Adjustment Mechanisms [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_RateAdjustmentMechanismsMember_lbl" xml:lang="en-US" id="id_10140147_1766872_1_1">Rate Adjustment Mechanisms [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_RateAdjustmentMechanismsMember_lbl" xml:lang="en-US" id="id_10140147_1766872_2_1">Rate Adjustment Mechanisms</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_RateAdjustmentMechanismsMember" xlink:to="utl_RateAdjustmentMechanismsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReceivablesAbstract" xlink:label="us-gaap_ReceivablesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReceivablesAbstract_lbl" xml:lang="en-US" id="id_10140147_1552894_1_1">Receivables [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ReceivablesAbstract_lbl" xml:lang="en-US" id="id_10140147_1552894_2_1">Receivables [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReceivablesAbstract" xlink:to="us-gaap_ReceivablesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReceivablesBillingStatusDomain" xlink:label="us-gaap_ReceivablesBillingStatusDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReceivablesBillingStatusDomain_lbl" xml:lang="en-US" id="id_10140147_1559509_1_1">Receivables Billing Status [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ReceivablesBillingStatusDomain_lbl" xml:lang="en-US" id="id_10140147_1559509_2_1">Receivables Billing Status [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReceivablesBillingStatusDomain" xlink:to="us-gaap_ReceivablesBillingStatusDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ReceivablesLineItems" xlink:label="utl_ReceivablesLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ReceivablesLineItems_lbl" xml:lang="en-US" id="id_10140147_1717908_3_1">Line items represent receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ReceivablesLineItems_lbl" xml:lang="en-US" id="id_10140147_1717908_1_1">Receivables [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ReceivablesLineItems_lbl" xml:lang="en-US" id="id_10140147_1717908_2_1">Receivables [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ReceivablesLineItems" xlink:to="utl_ReceivablesLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReceivablesPolicyTextBlock" xlink:label="us-gaap_ReceivablesPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReceivablesPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1556169_1_1">Receivables, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ReceivablesPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1556169_2_1">Exchange Gas Receivable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReceivablesPolicyTextBlock" xlink:to="us-gaap_ReceivablesPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ReceivablesTable" xlink:label="utl_ReceivablesTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ReceivablesTable_lbl" xml:lang="en-US" id="id_10140147_1605786_3_1">Schedule reflecting Receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ReceivablesTable_lbl" xml:lang="en-US" id="id_10140147_1605786_1_1">Receivables [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ReceivablesTable_lbl" xml:lang="en-US" id="id_10140147_1605786_2_1">Receivables [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ReceivablesTable" xlink:to="utl_ReceivablesTable_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_RecentlyIssuedAccountingPronouncementsPolicyTextBlock" xlink:label="utl_RecentlyIssuedAccountingPronouncementsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RecentlyIssuedAccountingPronouncementsPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1714506_3_1">Recently Issued Accounting Pronouncements, Policy.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_RecentlyIssuedAccountingPronouncementsPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1714506_1_1">Recently Issued Accounting Pronouncements [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_RecentlyIssuedAccountingPronouncementsPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1714506_2_1">Recently Issued Pronouncements</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_RecentlyIssuedAccountingPronouncementsPolicyTextBlock" xlink:to="utl_RecentlyIssuedAccountingPronouncementsPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" xlink:label="us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_lbl" xml:lang="en-US" id="id_10140147_1556174_1_1">Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_lbl" xml:lang="en-US" id="id_10140147_1556174_2_1">Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" xlink:to="us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_RecoveredOverNextYearMember" xlink:label="utl_RecoveredOverNextYearMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RecoveredOverNextYearMember_lbl" xml:lang="en-US" id="id_10140147_1767643_3_1">Recovered over next year.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_RecoveredOverNextYearMember_lbl" xml:lang="en-US" id="id_10140147_1767643_1_1">Recovered Over Next Year [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_RecoveredOverNextYearMember_lbl" xml:lang="en-US" id="id_10140147_1767643_2_1">Recovered over Next Year</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_RecoveredOverNextYearMember" xlink:to="utl_RecoveredOverNextYearMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_RegisteredPublicOfferingMember" xlink:label="utl_RegisteredPublicOfferingMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RegisteredPublicOfferingMember_lbl" xml:lang="en-US" id="id_10140147_1767642_3_1">Registered public offering.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_RegisteredPublicOfferingMember_lbl" xml:lang="en-US" id="id_10140147_1767642_1_1">Registered Public Offering [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_RegisteredPublicOfferingMember_lbl" xml:lang="en-US" id="id_10140147_1767642_2_1">Registered Public Offering</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_RegisteredPublicOfferingMember" xlink:to="utl_RegisteredPublicOfferingMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_RegistrationPaymentArrangementExtensionTerm" xlink:label="utl_RegistrationPaymentArrangementExtensionTerm"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RegistrationPaymentArrangementExtensionTerm_lbl" xml:lang="en-US" id="id_10140147_1774264_3_1">Describes the extended term of the registration payment arrangement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_RegistrationPaymentArrangementExtensionTerm_lbl" xml:lang="en-US" id="id_10140147_1774264_1_1">Registration Payment Arrangement, Extension Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_RegistrationPaymentArrangementExtensionTerm_lbl" xml:lang="en-US" id="id_10140147_1774264_2_1">TIRA extended term</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_RegistrationPaymentArrangementExtensionTerm" xlink:to="utl_RegistrationPaymentArrangementExtensionTerm_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegistrationPaymentArrangementTerm" xlink:label="us-gaap_RegistrationPaymentArrangementTerm"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegistrationPaymentArrangementTerm_lbl" xml:lang="en-US" id="id_10140147_1549568_1_1">Registration Payment Arrangement, Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegistrationPaymentArrangementTerm_lbl" xml:lang="en-US" id="id_10140147_1549568_2_1">TIRA initial term</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegistrationPaymentArrangementTerm" xlink:to="us-gaap_RegistrationPaymentArrangementTerm_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatedAndUnregulatedOperatingRevenue" xlink:label="us-gaap_RegulatedAndUnregulatedOperatingRevenue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatedAndUnregulatedOperatingRevenue_lbl" xml:lang="en-US" id="id_10140147_1560866_1_1">Regulated and Unregulated Operating Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatedAndUnregulatedOperatingRevenue_lbl" xml:lang="en-US" id="id_10140147_1560866_2_1">Revenues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_RegulatedAndUnregulatedOperatingRevenue_lbl" xml:lang="en-US" id="id_10140147_1560866_6_1">Total Operating Revenues</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatedAndUnregulatedOperatingRevenue" xlink:to="us-gaap_RegulatedAndUnregulatedOperatingRevenue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatedAndUnregulatedOperationDomain" xlink:label="us-gaap_RegulatedAndUnregulatedOperationDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatedAndUnregulatedOperationDomain_lbl" xml:lang="en-US" id="id_10140147_1559533_1_1">Regulated and Unregulated Operation [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatedAndUnregulatedOperationDomain_lbl" xml:lang="en-US" id="id_10140147_1559533_2_1">Regulated and Unregulated Operation [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatedAndUnregulatedOperationDomain" xlink:to="us-gaap_RegulatedAndUnregulatedOperationDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatedOperatingRevenueElectricNonNuclear" xlink:label="us-gaap_RegulatedOperatingRevenueElectricNonNuclear"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatedOperatingRevenueElectricNonNuclear_lbl" xml:lang="en-US" id="id_10140147_1563540_1_1">Regulated Operating Revenue, Electric, Non-Nuclear</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatedOperatingRevenueElectricNonNuclear_lbl" xml:lang="en-US" id="id_10140147_1563540_2_1">Electric</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatedOperatingRevenueElectricNonNuclear" xlink:to="us-gaap_RegulatedOperatingRevenueElectricNonNuclear_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatedOperatingRevenueGas" xlink:label="us-gaap_RegulatedOperatingRevenueGas"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatedOperatingRevenueGas_lbl" xml:lang="en-US" id="id_10140147_1562611_1_1">Regulated Operating Revenue, Gas</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatedOperatingRevenueGas_lbl" xml:lang="en-US" id="id_10140147_1562611_2_1">Gas</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatedOperatingRevenueGas" xlink:to="us-gaap_RegulatedOperatingRevenueGas_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatedOperatingRevenueOther" xlink:label="us-gaap_RegulatedOperatingRevenueOther"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatedOperatingRevenueOther_lbl" xml:lang="en-US" id="id_10140147_1562612_1_1">Regulated Operating Revenue, Other</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatedOperatingRevenueOther_lbl" xml:lang="en-US" id="id_10140147_1562612_2_1">Total Other Operating Revenues</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatedOperatingRevenueOther" xlink:to="us-gaap_RegulatedOperatingRevenueOther_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatedOperationsAbstract" xlink:label="us-gaap_RegulatedOperationsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatedOperationsAbstract_lbl" xml:lang="en-US" id="id_10140147_1556205_1_1">Regulated Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatedOperationsAbstract_lbl" xml:lang="en-US" id="id_10140147_1556205_2_1">Regulated Operations [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatedOperationsAbstract" xlink:to="us-gaap_RegulatedOperationsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryAssetAxis" xlink:label="us-gaap_RegulatoryAssetAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatoryAssetAxis_lbl" xml:lang="en-US" id="id_10140147_1552925_1_1">Regulatory Asset [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatoryAssetAxis_lbl" xml:lang="en-US" id="id_10140147_1552925_2_1">Regulatory Asset</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatoryAssetAxis" xlink:to="us-gaap_RegulatoryAssetAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryAssetDomain" xlink:label="us-gaap_RegulatoryAssetDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatoryAssetDomain_lbl" xml:lang="en-US" id="id_10140147_1549571_1_1">Regulatory Asset [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatoryAssetDomain_lbl" xml:lang="en-US" id="id_10140147_1549571_2_1">Regulatory Asset [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatoryAssetDomain" xlink:to="us-gaap_RegulatoryAssetDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryAssetLineItems" xlink:label="us-gaap_RegulatoryAssetLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatoryAssetLineItems_lbl" xml:lang="en-US" id="id_10140147_1556190_1_1">Regulatory Assets [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatoryAssetLineItems_lbl" xml:lang="en-US" id="id_10140147_1556190_2_1">Regulatory Assets [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatoryAssetLineItems" xlink:to="us-gaap_RegulatoryAssetLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_RegulatoryAssetMember" xlink:label="utl_RegulatoryAssetMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RegulatoryAssetMember_lbl" xml:lang="en-US" id="id_10140147_1740382_3_1">Regulatory Asset [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_RegulatoryAssetMember_lbl" xml:lang="en-US" id="id_10140147_1740382_1_1">Regulatory Asset [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_RegulatoryAssetMember_lbl" xml:lang="en-US" id="id_10140147_1740382_2_1">Regulatory Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_RegulatoryAssetMember" xlink:to="utl_RegulatoryAssetMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryAssets" xlink:label="us-gaap_RegulatoryAssets"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatoryAssets_lbl" xml:lang="en-US" id="id_10140147_1565104_1_1">Regulatory Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatoryAssets_lbl" xml:lang="en-US" id="id_10140147_1565104_2_1">Regulatory Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatoryAssets" xlink:to="us-gaap_RegulatoryAssets_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryAssetsCurrent" xlink:label="us-gaap_RegulatoryAssetsCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatoryAssetsCurrent_lbl" xml:lang="en-US" id="id_10140147_1566112_1_1">Regulatory Assets, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatoryAssetsCurrent_lbl" xml:lang="en-US" id="id_10140147_1566112_2_1">Less: Current Portion of Regulatory Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatoryAssetsCurrent" xlink:to="us-gaap_RegulatoryAssetsCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryAssetsNoncurrent" xlink:label="us-gaap_RegulatoryAssetsNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatoryAssetsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1565105_1_1">Regulatory Assets, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatoryAssetsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1565105_2_1">Regulatory Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RegulatoryAssetsNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1565105_12_1">Regulatory Assets - noncurrent</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatoryAssetsNoncurrent" xlink:to="us-gaap_RegulatoryAssetsNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryLiabilities" xlink:label="us-gaap_RegulatoryLiabilities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatoryLiabilities_lbl" xml:lang="en-US" id="id_10140147_1560864_1_1">Regulatory Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatoryLiabilities_lbl" xml:lang="en-US" id="id_10140147_1560864_2_1">Regulatory Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RegulatoryLiabilities_lbl" xml:lang="en-US" id="id_10140147_1560864_12_1">Regulatory Liability</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatoryLiabilities" xlink:to="us-gaap_RegulatoryLiabilities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryLiabilitiesLineItems" xlink:label="us-gaap_RegulatoryLiabilitiesLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatoryLiabilitiesLineItems_lbl" xml:lang="en-US" id="id_10140147_1559542_1_1">Regulatory Liabilities [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatoryLiabilitiesLineItems_lbl" xml:lang="en-US" id="id_10140147_1559542_2_1">Regulatory Liabilities [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatoryLiabilitiesLineItems" xlink:to="us-gaap_RegulatoryLiabilitiesLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryLiabilityAxis" xlink:label="us-gaap_RegulatoryLiabilityAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatoryLiabilityAxis_lbl" xml:lang="en-US" id="id_10140147_1556196_1_1">Regulatory Liability [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatoryLiabilityAxis_lbl" xml:lang="en-US" id="id_10140147_1556196_2_1">Regulatory Liability</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatoryLiabilityAxis" xlink:to="us-gaap_RegulatoryLiabilityAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryLiabilityCurrent" xlink:label="us-gaap_RegulatoryLiabilityCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatoryLiabilityCurrent_lbl" xml:lang="en-US" id="id_10140147_1563538_1_1">Regulatory Liability, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="us-gaap_RegulatoryLiabilityCurrent_lbl" xml:lang="en-US" id="id_10140147_1563538_32_1">Regulatory Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatoryLiabilityCurrent_lbl" xml:lang="en-US" id="id_10140147_1563538_2_1">Current Portion of Regulatory Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RegulatoryLiabilityCurrent_lbl" xml:lang="en-US" id="id_10140147_1563538_12_1">Less: Current Portion of Regulatory Liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatoryLiabilityCurrent" xlink:to="us-gaap_RegulatoryLiabilityCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryLiabilityDomain" xlink:label="us-gaap_RegulatoryLiabilityDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatoryLiabilityDomain_lbl" xml:lang="en-US" id="id_10140147_1556197_1_1">Regulatory Liability [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatoryLiabilityDomain_lbl" xml:lang="en-US" id="id_10140147_1556197_2_1">Regulatory Liability [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatoryLiabilityDomain" xlink:to="us-gaap_RegulatoryLiabilityDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryLiabilityNoncurrent" xlink:label="us-gaap_RegulatoryLiabilityNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RegulatoryLiabilityNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1560862_1_1">Regulatory Liability, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RegulatoryLiabilityNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1560862_2_1">Regulatory Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RegulatoryLiabilityNoncurrent_lbl" xml:lang="en-US" id="id_10140147_1560862_12_1">Regulatory Liabilities-noncurrent</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RegulatoryLiabilityNoncurrent" xlink:to="us-gaap_RegulatoryLiabilityNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_RegulatoryLiabilityRecoveryRefund" xlink:label="utl_RegulatoryLiabilityRecoveryRefund"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RegulatoryLiabilityRecoveryRefund_lbl" xml:lang="en-US" id="id_10140147_1774289_3_1">Regulatory liability recovery refund.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_RegulatoryLiabilityRecoveryRefund_lbl" xml:lang="en-US" id="id_10140147_1774289_1_1">Regulatory Liability Recovery Refund</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_RegulatoryLiabilityRecoveryRefund_lbl" xml:lang="en-US" id="id_10140147_1774289_2_1">Regulatory liability, expected flow back to customers</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_RegulatoryLiabilityRecoveryRefund" xlink:to="utl_RegulatoryLiabilityRecoveryRefund_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_RemainingAmortizationPeriod" xlink:label="utl_RemainingAmortizationPeriod"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RemainingAmortizationPeriod_lbl" xml:lang="en-US" id="id_10140147_1725318_3_1">Remaining Amortization Period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_RemainingAmortizationPeriod_lbl" xml:lang="en-US" id="id_10140147_1725318_1_1">Remaining Amortization Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_RemainingAmortizationPeriod_lbl" xml:lang="en-US" id="id_10140147_1725318_2_1">Amortization period for environmental costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_RemainingAmortizationPeriod" xlink:to="utl_RemainingAmortizationPeriod_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_RenewableEnergyPortfolioRequirementMember" xlink:label="utl_RenewableEnergyPortfolioRequirementMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RenewableEnergyPortfolioRequirementMember_lbl" xml:lang="en-US" id="id_10140147_1598807_3_1">Renewable Energy Portfolio Requirement [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_RenewableEnergyPortfolioRequirementMember_lbl" xml:lang="en-US" id="id_10140147_1598807_1_1">Renewable Energy Portfolio Requirement [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_RenewableEnergyPortfolioRequirementMember_lbl" xml:lang="en-US" id="id_10140147_1598807_2_1">Renewable Energy Portfolio Standards</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_RenewableEnergyPortfolioRequirementMember" xlink:to="utl_RenewableEnergyPortfolioRequirementMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RepaymentsOfLinesOfCredit" xlink:label="us-gaap_RepaymentsOfLinesOfCredit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfLinesOfCredit_lbl" xml:lang="en-US" id="id_10140147_1563531_1_1">Repayments of Lines of Credit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RepaymentsOfLinesOfCredit_lbl" xml:lang="en-US" id="id_10140147_1563531_2_1">Repayments of lines of credit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfLinesOfCredit" xlink:to="us-gaap_RepaymentsOfLinesOfCredit_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="us-gaap_RepaymentsOfLongTermDebt"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xml:lang="en-US" id="id_10140147_1562603_1_1">Repayments of Long-term Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xml:lang="en-US" id="id_10140147_1562603_14_1">Repayment of Long-Term Debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfLongTermDebt" xlink:to="us-gaap_RepaymentsOfLongTermDebt_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReserveQuantitiesByTypeOfReserveAxis" xlink:label="us-gaap_ReserveQuantitiesByTypeOfReserveAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReserveQuantitiesByTypeOfReserveAxis_lbl" xml:lang="en-US" id="id_10140147_1549598_1_1">Petroleum Reserves [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ReserveQuantitiesByTypeOfReserveAxis_lbl" xml:lang="en-US" id="id_10140147_1549598_2_1">Petroleum Reserves [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReserveQuantitiesByTypeOfReserveAxis" xlink:to="us-gaap_ReserveQuantitiesByTypeOfReserveAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ResidentialMember" xlink:label="utl_ResidentialMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ResidentialMember_lbl" xml:lang="en-US" id="id_10140147_1707535_3_1">Residential.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ResidentialMember_lbl" xml:lang="en-US" id="id_10140147_1707535_1_1">Residential [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ResidentialMember_lbl" xml:lang="en-US" id="id_10140147_1707535_2_1">Residential</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ResidentialMember" xlink:to="utl_ResidentialMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="us-gaap_RestatementAdjustmentMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestatementAdjustmentMember_lbl" xml:lang="en-US" id="id_10140147_1556248_1_1">Restatement Adjustment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestatementAdjustmentMember_lbl" xml:lang="en-US" id="id_10140147_1556248_2_1">Restatement Adjustment [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestatementAdjustmentMember" xlink:to="us-gaap_RestatementAdjustmentMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_lbl" xml:lang="en-US" id="id_10140147_1549607_1_1">Cash and Cash Equivalents [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_lbl" xml:lang="en-US" id="id_10140147_1549607_2_1">Cash and Cash Equivalents [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedStockExpense" xlink:label="us-gaap_RestrictedStockExpense"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedStockExpense_lbl" xml:lang="en-US" id="id_10140147_1566134_1_1">Restricted Stock or Unit Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedStockExpense_lbl" xml:lang="en-US" id="id_10140147_1566134_2_1">Share based compensation expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockExpense" xlink:to="us-gaap_RestrictedStockExpense_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="us-gaap_RestrictedStockMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedStockMember_lbl" xml:lang="en-US" id="id_10140147_1556259_1_1">Restricted Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedStockMember_lbl" xml:lang="en-US" id="id_10140147_1556259_2_1">Restricted Stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockMember" xlink:to="us-gaap_RestrictedStockMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="us-gaap_RestrictedStockUnitsRSUMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedStockUnitsRSUMember_lbl" xml:lang="en-US" id="id_10140147_1559589_1_1">Restricted Stock Units (RSUs) [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedStockUnitsRSUMember_lbl" xml:lang="en-US" id="id_10140147_1559589_2_1">Restricted Stock Units (RSUs)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockUnitsRSUMember" xlink:to="us-gaap_RestrictedStockUnitsRSUMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:label="us-gaap_RestructuringCostAndReserveAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestructuringCostAndReserveAxis_lbl" xml:lang="en-US" id="id_10140147_1559594_1_1">Restructuring Type [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestructuringCostAndReserveAxis_lbl" xml:lang="en-US" id="id_10140147_1559594_2_1">Restructuring Type</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestructuringCostAndReserveAxis" xlink:to="us-gaap_RestructuringCostAndReserveAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xml:lang="en-US" id="id_10140147_1560833_1_1">Retained Earnings (Accumulated Deficit)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xml:lang="en-US" id="id_10140147_1560833_2_1">Retained Earnings</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="us-gaap_RetainedEarningsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetainedEarningsMember_lbl" xml:lang="en-US" id="id_10140147_1549644_1_1">Retained Earnings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RetainedEarningsMember_lbl" xml:lang="en-US" id="id_10140147_1549644_2_1">Retained Earnings</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsMember" xlink:to="us-gaap_RetainedEarningsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetirementPlanTypeAxis_lbl" xml:lang="en-US" id="id_10140147_1556283_1_1">Retirement Plan Type [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RetirementPlanTypeAxis_lbl" xml:lang="en-US" id="id_10140147_1556283_2_1">Defined Benefit Plans Type Of Plans</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetirementPlanTypeDomain_lbl" xml:lang="en-US" id="id_10140147_1559612_1_1">Retirement Plan Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RetirementPlanTypeDomain_lbl" xml:lang="en-US" id="id_10140147_1559612_2_1">Retirement Plan Type [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_RetirementPlanTypeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_RevenueAdjustment" xlink:label="utl_RevenueAdjustment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RevenueAdjustment_lbl" xml:lang="en-US" id="id_10140147_1754440_3_1">Revenue Adjustment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_RevenueAdjustment_lbl" xml:lang="en-US" id="id_10140147_1754440_1_1">Revenue Adjustment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_RevenueAdjustment_lbl" xml:lang="en-US" id="id_10140147_1754440_2_1">Annual revenue adjustment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_RevenueAdjustment" xlink:to="utl_RevenueAdjustment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_lbl" xml:lang="en-US" id="id_10140147_1560836_1_1">Revenue from Contract with Customer, Including Assessed Tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_lbl" xml:lang="en-US" id="id_10140147_1560836_2_1">Total Gas and Electric Operating Revenues</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:to="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_RevenueOffsetMember" xlink:label="utl_RevenueOffsetMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RevenueOffsetMember_lbl" xml:lang="en-US" id="id_10140147_1774262_3_1">Revenue Offset [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_RevenueOffsetMember_lbl" xml:lang="en-US" id="id_10140147_1774262_1_1">Revenue Offset [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_RevenueOffsetMember_lbl" xml:lang="en-US" id="id_10140147_1774262_2_1">Revenue Offset [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_RevenueOffsetMember" xlink:to="utl_RevenueOffsetMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1553011_1_1">Revenue Recognition, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1553011_2_1">Other Operating Revenue - Non-regulated</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRecognitionPolicyTextBlock" xlink:to="us-gaap_RevenueRecognitionPolicyTextBlock_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RevenueReductionAdjustmentsTcjaMember_lbl" xml:lang="en-US" id="id_10140147_1774471_3_1">Revenue reduction adjustments - TCJA.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_RevenueSharingPayment_lbl" xml:lang="en-US" id="id_10140147_1772808_3_1">Revenue sharing payment.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xml:lang="en-US" id="id_10140147_1549701_1_1">Revolving Credit Facility [Member]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xml:lang="en-US" id="id_10140147_1549813_1_1">Sale of Stock [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xml:lang="en-US" id="id_10140147_1549813_2_1">Sale of Stock [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockNameOfTransactionDomain" xlink:to="us-gaap_SaleOfStockNameOfTransactionDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioForecastMember" xlink:label="us-gaap_ScenarioForecastMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScenarioForecastMember_lbl" xml:lang="en-US" id="id_10140147_1549707_1_1">Scenario, Forecast [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScenarioForecastMember_lbl" xml:lang="en-US" id="id_10140147_1549707_2_1">Scenario Forecast</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="us-gaap_ScenarioUnspecifiedDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScenarioUnspecifiedDomain_lbl" xml:lang="en-US" id="id_10140147_1553029_1_1">Scenario, Unspecified [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScenarioUnspecifiedDomain_lbl" xml:lang="en-US" id="id_10140147_1553029_2_1">Scenario, Unspecified [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScenarioUnspecifiedDomain" xlink:to="us-gaap_ScenarioUnspecifiedDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAssumptionsUsedTableTextBlock" xlink:label="us-gaap_ScheduleOfAssumptionsUsedTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfAssumptionsUsedTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1553034_1_1">Schedule of Assumptions Used [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfAssumptionsUsedTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1553034_2_1">Key Weighted Average Assumptions Used in Determining Benefit Plan Costs and Obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAssumptionsUsedTableTextBlock" xlink:to="us-gaap_ScheduleOfAssumptionsUsedTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock" xlink:label="us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1559676_1_1">Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1559676_2_1">Fair Value of Long Term Debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock" xlink:to="us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock" xlink:label="us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1553048_1_1">Schedule of Costs of Retirement Plans [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1553048_2_1">Components of Retirement Plan Costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock" xlink:to="us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDebtInstrumentsTextBlock" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" xml:lang="en-US" id="id_10140147_1549731_1_1">Schedule of Long-term Debt Instruments [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" xml:lang="en-US" id="id_10140147_1549731_2_1">Details on Long Term Debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDebtInstrumentsTextBlock" xlink:to="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDebtTableTextBlock" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1553052_1_1">Schedule of Debt [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1553052_2_1">Borrowing Limits Amounts Outstanding and Amounts Available under Revolving Credit Facility</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDebtTableTextBlock" xlink:to="us-gaap_ScheduleOfDebtTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_lbl" xml:lang="en-US" id="id_10140147_1553054_1_1">Schedule of Defined Benefit Plans Disclosures [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_lbl" xml:lang="en-US" id="id_10140147_1553054_2_1">Schedule of Defined Benefit Plans Disclosures [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfEnvironmentalExitCostTable" xlink:label="us-gaap_ScheduleOfEnvironmentalExitCostTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfEnvironmentalExitCostTable_lbl" xml:lang="en-US" id="id_10140147_1559703_1_1">Schedule of Environmental Exit Cost [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfEnvironmentalExitCostTable_lbl" xml:lang="en-US" id="id_10140147_1559703_2_1">Schedule of Environmental Exit Cost [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEnvironmentalExitCostTable" xlink:to="us-gaap_ScheduleOfEnvironmentalExitCostTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock" xlink:label="us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock_lbl" xml:lang="en-US" id="id_10140147_1559704_1_1">Schedule of Environmental Loss Contingencies by Site [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock_lbl" xml:lang="en-US" id="id_10140147_1559704_2_1">Environmental Obligations Recognized by Company</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock" xlink:to="us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ScheduleOfOtherAccountsReceivableTableTextBlock" xlink:label="utl_ScheduleOfOtherAccountsReceivableTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ScheduleOfOtherAccountsReceivableTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1680202_3_1">Description of the components and amounts included in Exchange Gas Receivable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ScheduleOfOtherAccountsReceivableTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1680202_1_1">Schedule Of Other Accounts Receivable [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ScheduleOfOtherAccountsReceivableTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1680202_2_1">Components of Exchange Gas Receivable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ScheduleOfOtherAccountsReceivableTableTextBlock" xlink:to="utl_ScheduleOfOtherAccountsReceivableTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock" xlink:label="us-gaap_ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock_lbl" xml:lang="en-US" id="id_10140147_1553111_1_1">Schedule of Other Operating Cost and Expense, by Component [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock_lbl" xml:lang="en-US" id="id_10140147_1553111_2_1">Schedule of Other Operating Revenues and Operating Expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock" xlink:to="us-gaap_ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRegulatoryAssetsTable" xlink:label="us-gaap_ScheduleOfRegulatoryAssetsTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfRegulatoryAssetsTable_lbl" xml:lang="en-US" id="id_10140147_1549777_1_1">Schedule of Regulatory Assets [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfRegulatoryAssetsTable_lbl" xml:lang="en-US" id="id_10140147_1549777_2_1">Schedule of Regulatory Assets [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfRegulatoryAssetsTable" xlink:to="us-gaap_ScheduleOfRegulatoryAssetsTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRegulatoryAssetsTextBlock" xlink:label="us-gaap_ScheduleOfRegulatoryAssetsTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfRegulatoryAssetsTextBlock_lbl" xml:lang="en-US" id="id_10140147_1553123_1_1">Schedule of Regulatory Assets [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfRegulatoryAssetsTextBlock_lbl" xml:lang="en-US" id="id_10140147_1553123_2_1">Regulatory Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfRegulatoryAssetsTextBlock" xlink:to="us-gaap_ScheduleOfRegulatoryAssetsTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRegulatoryLiabilitiesTable" xlink:label="us-gaap_ScheduleOfRegulatoryLiabilitiesTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfRegulatoryLiabilitiesTable_lbl" xml:lang="en-US" id="id_10140147_1559740_1_1">Schedule of Regulatory Liabilities [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfRegulatoryLiabilitiesTable_lbl" xml:lang="en-US" id="id_10140147_1559740_2_1">Schedule of Regulatory Liabilities [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfRegulatoryLiabilitiesTable" xlink:to="us-gaap_ScheduleOfRegulatoryLiabilitiesTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock" xlink:label="us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock_lbl" xml:lang="en-US" id="id_10140147_1556433_1_1">Schedule of Regulatory Liabilities [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock_lbl" xml:lang="en-US" id="id_10140147_1556433_2_1">Regulatory Liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock" xlink:to="us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xml:lang="en-US" id="id_10140147_1556442_1_1">Schedule of Segment Reporting Information, by Segment [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xml:lang="en-US" id="id_10140147_1556442_2_1">Significant Segment Financial Data</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfStockByClassTable" xlink:label="us-gaap_ScheduleOfStockByClassTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xml:lang="en-US" id="id_10140147_1549796_1_1">Schedule of Stock by Class [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xml:lang="en-US" id="id_10140147_1549796_2_1">Schedule of Stock by Class [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfStockByClassTable" xlink:to="us-gaap_ScheduleOfStockByClassTable_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ScheduleOfStockOptionsLineItems" xlink:label="utl_ScheduleOfStockOptionsLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ScheduleOfStockOptionsLineItems_lbl" xml:lang="en-US" id="id_10140147_1742698_3_1">Schedule Of Stock Options [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ScheduleOfStockOptionsLineItems_lbl" xml:lang="en-US" id="id_10140147_1742698_1_1">Schedule Of Stock Options [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ScheduleOfStockOptionsLineItems_lbl" xml:lang="en-US" id="id_10140147_1742698_2_1">Schedule Of Stock Options [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ScheduleOfStockOptionsLineItems" xlink:to="utl_ScheduleOfStockOptionsLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ScheduleOfStockOptionsTable" xlink:label="utl_ScheduleOfStockOptionsTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ScheduleOfStockOptionsTable_lbl" xml:lang="en-US" id="id_10140147_1743360_3_1">Schedule Of Stock Options [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ScheduleOfStockOptionsTable_lbl" xml:lang="en-US" id="id_10140147_1743360_1_1">Schedule Of Stock Options [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ScheduleOfStockOptionsTable_lbl" xml:lang="en-US" id="id_10140147_1743360_2_1">Schedule Of Stock Options [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ScheduleOfStockOptionsTable" xlink:to="utl_ScheduleOfStockOptionsTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock" xlink:label="us-gaap_ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1559757_1_1">Schedule of Unvested Restricted Stock Units Roll Forward [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1559757_2_1">Restricted Stock Units Issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock" xlink:to="us-gaap_ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfUtilityInventoryTextBlock" xlink:label="us-gaap_ScheduleOfUtilityInventoryTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfUtilityInventoryTextBlock_lbl" xml:lang="en-US" id="id_10140147_1549801_1_1">Schedule of Utility Inventory [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfUtilityInventoryTextBlock_lbl" xml:lang="en-US" id="id_10140147_1549801_2_1">Components of Gas Inventory</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfUtilityInventoryTextBlock" xlink:to="us-gaap_ScheduleOfUtilityInventoryTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SecondTabProgramMember" xlink:label="utl_SecondTabProgramMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SecondTabProgramMember_lbl" xml:lang="en-US" id="id_10140147_1728725_3_1">Second TAB program.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SecondTabProgramMember_lbl" xml:lang="en-US" id="id_10140147_1728725_1_1">Second TAB program [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SecondTabProgramMember_lbl" xml:lang="en-US" id="id_10140147_1728725_2_1">Second TAB program</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SecondTabProgramMember" xlink:to="utl_SecondTabProgramMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="us-gaap_SegmentDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SegmentDomain_lbl" xml:lang="en-US" id="id_10140147_1549836_1_1">Segments [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SegmentDomain_lbl" xml:lang="en-US" id="id_10140147_1549836_2_1">Segments [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentDomain" xlink:to="us-gaap_SegmentDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="us-gaap_SegmentGeographicalDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SegmentGeographicalDomain_lbl" xml:lang="en-US" id="id_10140147_1559807_1_1">Geographical [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SegmentGeographicalDomain_lbl" xml:lang="en-US" id="id_10140147_1559807_2_1">Geographical [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentGeographicalDomain" xlink:to="us-gaap_SegmentGeographicalDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="us-gaap_SegmentReportingAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SegmentReportingAbstract_lbl" xml:lang="en-US" id="id_10140147_1549837_1_1">Segment Reporting [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SegmentReportingAbstract_lbl" xml:lang="en-US" id="id_10140147_1549837_2_1">Segment Reporting [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingAbstract" xlink:to="us-gaap_SegmentReportingAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xml:lang="en-US" id="id_10140147_1559811_1_1">Segment Reporting Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xml:lang="en-US" id="id_10140147_1559811_2_1">SEGMENT INFORMATION</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingDisclosureTextBlock" xlink:to="us-gaap_SegmentReportingDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" xlink:label="us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_lbl" xml:lang="en-US" id="id_10140147_1553169_1_1">Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_lbl" xml:lang="en-US" id="id_10140147_1553169_2_1">Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" xlink:to="us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SeniorNotes" xlink:label="us-gaap_SeniorNotes"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SeniorNotes_lbl" xml:lang="en-US" id="id_10140147_1563467_1_1">Senior Notes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SeniorNotes_lbl" xml:lang="en-US" id="id_10140147_1563467_2_1">Senior Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeniorNotes" xlink:to="us-gaap_SeniorNotes_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesFivePointNineZeroPercentDueDecemberFifteenTwentyThirtyMember" xlink:label="utl_SeniorNotesFivePointNineZeroPercentDueDecemberFifteenTwentyThirtyMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesFivePointNineZeroPercentDueDecemberFifteenTwentyThirtyMember_lbl" xml:lang="en-US" id="id_10140147_1704206_3_1">Senior Notes Five Point Nine Zero Percent Due December Fifteen Twenty Thirty [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesFivePointNineZeroPercentDueDecemberFifteenTwentyThirtyMember_lbl" xml:lang="en-US" id="id_10140147_1704206_1_1">Senior Notes Five Point Nine Zero Percent Due December Fifteen Twenty Thirty [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesFivePointNineZeroPercentDueDecemberFifteenTwentyThirtyMember_lbl" xml:lang="en-US" id="id_10140147_1704206_2_1">5.90% Senior Notes, Due December 15, 2030</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesFivePointNineZeroPercentDueDecemberFifteenTwentyThirtyMember" xlink:to="utl_SeniorNotesFivePointNineZeroPercentDueDecemberFifteenTwentyThirtyMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesFivePointTwoNinePercentDueMarchTwoTwentyTwentyMember" xlink:label="utl_SeniorNotesFivePointTwoNinePercentDueMarchTwoTwentyTwentyMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesFivePointTwoNinePercentDueMarchTwoTwentyTwentyMember_lbl" xml:lang="en-US" id="id_10140147_1720087_3_1">Senior Notes Five Point Two Nine Percent Due March Two Twenty Twenty [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesFivePointTwoNinePercentDueMarchTwoTwentyTwentyMember_lbl" xml:lang="en-US" id="id_10140147_1720087_1_1">Senior Notes Five Point Two Nine Percent Due March Two Twenty Twenty [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesFivePointTwoNinePercentDueMarchTwoTwentyTwentyMember_lbl" xml:lang="en-US" id="id_10140147_1720087_2_1">5.29% Senior Notes, Due March 2, 2020</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesFivePointTwoNinePercentDueMarchTwoTwentyTwentyMember" xlink:to="utl_SeniorNotesFivePointTwoNinePercentDueMarchTwoTwentyTwentyMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesFourPointFourTwoPercentDueOctoberFifteenTwentyFortyFourMember" xlink:label="utl_SeniorNotesFourPointFourTwoPercentDueOctoberFifteenTwentyFortyFourMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesFourPointFourTwoPercentDueOctoberFifteenTwentyFortyFourMember_lbl" xml:lang="en-US" id="id_10140147_1646143_3_1">Senior Notes Four Point Four Two Percent Due October Fifteen Twenty Forty Four [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesFourPointFourTwoPercentDueOctoberFifteenTwentyFortyFourMember_lbl" xml:lang="en-US" id="id_10140147_1646143_1_1">Senior Notes Four Point Four Two Percent Due October Fifteen Twenty Forty Four [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesFourPointFourTwoPercentDueOctoberFifteenTwentyFortyFourMember_lbl" xml:lang="en-US" id="id_10140147_1646143_2_1">4.42% Senior Notes, Due October 15, 2044</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesFourPointFourTwoPercentDueOctoberFifteenTwentyFortyFourMember" xlink:to="utl_SeniorNotesFourPointFourTwoPercentDueOctoberFifteenTwentyFortyFourMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember" xlink:label="utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember_lbl" xml:lang="en-US" id="id_10140147_1768778_3_1">Senior Notes Four Point Three Two Percent Due November One Twenty Forty Seven [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember_lbl" xml:lang="en-US" id="id_10140147_1768778_1_1">Senior Notes Four Point Three Two Percent Due November One Twenty Forty Seven [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember_lbl" xml:lang="en-US" id="id_10140147_1768778_2_1">4.32% Senior Notes, Due November 1, 2047</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember" xlink:to="utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesSevenPointNineEightPercentDueJuneOneTwentyThirtyOneMember" xlink:label="utl_SeniorNotesSevenPointNineEightPercentDueJuneOneTwentyThirtyOneMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesSevenPointNineEightPercentDueJuneOneTwentyThirtyOneMember_lbl" xml:lang="en-US" id="id_10140147_1657277_3_1">Senior Notes Seven Point Nine Eight Percent Due June One Twenty Thirty One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesSevenPointNineEightPercentDueJuneOneTwentyThirtyOneMember_lbl" xml:lang="en-US" id="id_10140147_1657277_1_1">Senior Notes Seven Point Nine Eight Percent Due June One Twenty Thirty One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesSevenPointNineEightPercentDueJuneOneTwentyThirtyOneMember_lbl" xml:lang="en-US" id="id_10140147_1657277_2_1">7.98% Senior Notes, Due June 1, 2031</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesSevenPointNineEightPercentDueJuneOneTwentyThirtyOneMember" xlink:to="utl_SeniorNotesSevenPointNineEightPercentDueJuneOneTwentyThirtyOneMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesSevenPointOneFivePercentDueDecemberFifteenTwentyEighteenMember" xlink:label="utl_SeniorNotesSevenPointOneFivePercentDueDecemberFifteenTwentyEighteenMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesSevenPointOneFivePercentDueDecemberFifteenTwentyEighteenMember_lbl" xml:lang="en-US" id="id_10140147_1595757_3_1">Senior Notes Seven Point One Five Percent Due December Fifteen Twenty Eighteen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesSevenPointOneFivePercentDueDecemberFifteenTwentyEighteenMember_lbl" xml:lang="en-US" id="id_10140147_1595757_1_1">Senior Notes Seven Point One Five Percent Due December Fifteen Twenty Eighteen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesSevenPointOneFivePercentDueDecemberFifteenTwentyEighteenMember_lbl" xml:lang="en-US" id="id_10140147_1595757_2_1">7.15% Senior Notes, Due December 15, 2018</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesSevenPointOneFivePercentDueDecemberFifteenTwentyEighteenMember" xlink:to="utl_SeniorNotesSevenPointOneFivePercentDueDecemberFifteenTwentyEighteenMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesSevenPointSevenTwoPercentDueDecemberThreeTwentyThirtyEightMember" xlink:label="utl_SeniorNotesSevenPointSevenTwoPercentDueDecemberThreeTwentyThirtyEightMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesSevenPointSevenTwoPercentDueDecemberThreeTwentyThirtyEightMember_lbl" xml:lang="en-US" id="id_10140147_1682460_3_1">Senior Notes Seven Point Seven Two Percent Due December Three Twenty Thirty Eight [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesSevenPointSevenTwoPercentDueDecemberThreeTwentyThirtyEightMember_lbl" xml:lang="en-US" id="id_10140147_1682460_1_1">Senior Notes Seven Point Seven Two Percent Due December Three Twenty Thirty Eight [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesSevenPointSevenTwoPercentDueDecemberThreeTwentyThirtyEightMember_lbl" xml:lang="en-US" id="id_10140147_1682460_2_1">7.72% Senior Notes, Due December 3, 2038</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesSevenPointSevenTwoPercentDueDecemberThreeTwentyThirtyEightMember" xlink:to="utl_SeniorNotesSevenPointSevenTwoPercentDueDecemberThreeTwentyThirtyEightMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesSevenPointThreeSevenPercentDueJanuaryFifteenTwentyTwentyNineMember" xlink:label="utl_SeniorNotesSevenPointThreeSevenPercentDueJanuaryFifteenTwentyTwentyNineMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesSevenPointThreeSevenPercentDueJanuaryFifteenTwentyTwentyNineMember_lbl" xml:lang="en-US" id="id_10140147_1657092_3_1">Senior Notes Seven Point Three Seven Percent Due January Fifteen Twenty Twenty Nine [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesSevenPointThreeSevenPercentDueJanuaryFifteenTwentyTwentyNineMember_lbl" xml:lang="en-US" id="id_10140147_1657092_1_1">Senior Notes Seven Point Three Seven Percent Due January Fifteen Twenty Twenty Nine [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesSevenPointThreeSevenPercentDueJanuaryFifteenTwentyTwentyNineMember_lbl" xml:lang="en-US" id="id_10140147_1657092_2_1">7.37% Senior Notes, Due January 15, 2029</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesSevenPointThreeSevenPercentDueJanuaryFifteenTwentyTwentyNineMember" xlink:to="utl_SeniorNotesSevenPointThreeSevenPercentDueJanuaryFifteenTwentyTwentyNineMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesSixPointNineFivePercentDueDecemberThreeTwentyEighteenMember" xlink:label="utl_SeniorNotesSixPointNineFivePercentDueDecemberThreeTwentyEighteenMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesSixPointNineFivePercentDueDecemberThreeTwentyEighteenMember_lbl" xml:lang="en-US" id="id_10140147_1668232_3_1">Senior Notes Six Point Nine Five Percent Due December Three Twenty Eighteen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesSixPointNineFivePercentDueDecemberThreeTwentyEighteenMember_lbl" xml:lang="en-US" id="id_10140147_1668232_1_1">Senior Notes Six Point Nine Five Percent Due December Three Twenty Eighteen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesSixPointNineFivePercentDueDecemberThreeTwentyEighteenMember_lbl" xml:lang="en-US" id="id_10140147_1668232_2_1">6.95% Senior Notes, Due December 3, 2018</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesSixPointNineFivePercentDueDecemberThreeTwentyEighteenMember" xlink:to="utl_SeniorNotesSixPointNineFivePercentDueDecemberThreeTwentyEighteenMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesSixPointSevenFivePercentDueNovemberThirtyTwentyTwentyThreeMember" xlink:label="utl_SeniorNotesSixPointSevenFivePercentDueNovemberThirtyTwentyTwentyThreeMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesSixPointSevenFivePercentDueNovemberThirtyTwentyTwentyThreeMember_lbl" xml:lang="en-US" id="id_10140147_1668674_3_1">Senior Notes Six Point Seven Five Percent Due November Thirty Twenty Twenty Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesSixPointSevenFivePercentDueNovemberThirtyTwentyTwentyThreeMember_lbl" xml:lang="en-US" id="id_10140147_1668674_1_1">Senior Notes Six Point Seven Five Percent Due November Thirty Twenty Twenty Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesSixPointSevenFivePercentDueNovemberThirtyTwentyTwentyThreeMember_lbl" xml:lang="en-US" id="id_10140147_1668674_2_1">6.75% Senior Notes, Due November 30, 2023</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesSixPointSevenFivePercentDueNovemberThirtyTwentyTwentyThreeMember" xlink:to="utl_SeniorNotesSixPointSevenFivePercentDueNovemberThirtyTwentyTwentyThreeMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesSixPointSevenNinePercentDueOctoberFifteenTwentyTwentyFiveMember" xlink:label="utl_SeniorNotesSixPointSevenNinePercentDueOctoberFifteenTwentyTwentyFiveMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesSixPointSevenNinePercentDueOctoberFifteenTwentyTwentyFiveMember_lbl" xml:lang="en-US" id="id_10140147_1652124_3_1">Senior Notes Six Point Seven Nine Percent Due October Fifteen Twenty Twenty Five [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesSixPointSevenNinePercentDueOctoberFifteenTwentyTwentyFiveMember_lbl" xml:lang="en-US" id="id_10140147_1652124_1_1">Senior Notes Six Point Seven Nine Percent Due October Fifteen Twenty Twenty Five [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesSixPointSevenNinePercentDueOctoberFifteenTwentyTwentyFiveMember_lbl" xml:lang="en-US" id="id_10140147_1652124_2_1">6.79% Senior Notes, Due October 15, 2025</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesSixPointSevenNinePercentDueOctoberFifteenTwentyTwentyFiveMember" xlink:to="utl_SeniorNotesSixPointSevenNinePercentDueOctoberFifteenTwentyTwentyFiveMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesSixPointThreeThreePercentDueMayOneTwentyTwentyTwoMember" xlink:label="utl_SeniorNotesSixPointThreeThreePercentDueMayOneTwentyTwentyTwoMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesSixPointThreeThreePercentDueMayOneTwentyTwentyTwoMember_lbl" xml:lang="en-US" id="id_10140147_1643290_3_1">Senior Notes Six Point Three Three Percent Due May One Twenty Twenty Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesSixPointThreeThreePercentDueMayOneTwentyTwentyTwoMember_lbl" xml:lang="en-US" id="id_10140147_1643290_1_1">Senior Notes Six Point Three Three Percent Due May One Twenty Twenty Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesSixPointThreeThreePercentDueMayOneTwentyTwentyTwoMember_lbl" xml:lang="en-US" id="id_10140147_1643290_2_1">6.33% Senior Notes, Due May 1, 2022</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesSixPointThreeThreePercentDueMayOneTwentyTwentyTwoMember" xlink:to="utl_SeniorNotesSixPointThreeThreePercentDueMayOneTwentyTwentyTwoMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember" xlink:label="utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember_lbl" xml:lang="en-US" id="id_10140147_1768777_3_1">Senior Notes Three Point Five Two Percent Due November One Twenty Twenty Seven [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember_lbl" xml:lang="en-US" id="id_10140147_1768777_1_1">Senior Notes Three Point Five Two Percent Due November One Twenty Twenty Seven [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember_lbl" xml:lang="en-US" id="id_10140147_1768777_2_1">3.52% Senior Notes, Due November 1, 2027</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember" xlink:to="utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorNotesThreePointSevenTwoPercentDueNovemberOneTwentyTwentySevenMember" xlink:label="utl_SeniorNotesThreePointSevenTwoPercentDueNovemberOneTwentyTwentySevenMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorNotesThreePointSevenTwoPercentDueNovemberOneTwentyTwentySevenMember_lbl" xml:lang="en-US" id="id_10140147_1768779_3_1">Senior Notes Three Point Seven Two Percent Due November One Twenty Twenty Seven [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorNotesThreePointSevenTwoPercentDueNovemberOneTwentyTwentySevenMember_lbl" xml:lang="en-US" id="id_10140147_1768779_1_1">Senior Notes Three Point Seven Two Percent Due November One Twenty Twenty Seven [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorNotesThreePointSevenTwoPercentDueNovemberOneTwentyTwentySevenMember_lbl" xml:lang="en-US" id="id_10140147_1768779_2_1">3.72% Senior Notes, Due November 1, 2027</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorNotesThreePointSevenTwoPercentDueNovemberOneTwentyTwentySevenMember" xlink:to="utl_SeniorNotesThreePointSevenTwoPercentDueNovemberOneTwentyTwentySevenMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorSecuredNotesEightPointZeroZeroPercentDueThroughAugustOneTwentySeventeenMember" xlink:label="utl_SeniorSecuredNotesEightPointZeroZeroPercentDueThroughAugustOneTwentySeventeenMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorSecuredNotesEightPointZeroZeroPercentDueThroughAugustOneTwentySeventeenMember_lbl" xml:lang="en-US" id="id_10140147_1652030_3_1">Senior Secured Notes Eight Point Zero Zero Percent Due Through August One Twenty Seventeen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorSecuredNotesEightPointZeroZeroPercentDueThroughAugustOneTwentySeventeenMember_lbl" xml:lang="en-US" id="id_10140147_1652030_1_1">Senior Secured Notes Eight Point Zero Zero Percent Due Through August One Twenty Seventeen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorSecuredNotesEightPointZeroZeroPercentDueThroughAugustOneTwentySeventeenMember_lbl" xml:lang="en-US" id="id_10140147_1652030_2_1">8.00% Senior Secured Notes, Due August 1, 2017</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorSecuredNotesEightPointZeroZeroPercentDueThroughAugustOneTwentySeventeenMember" xlink:to="utl_SeniorSecuredNotesEightPointZeroZeroPercentDueThroughAugustOneTwentySeventeenMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeniorUnsecuredNotesThreePointSevenZeroPercentDueAugustOneTwentyTwentySixMember" xlink:label="utl_SeniorUnsecuredNotesThreePointSevenZeroPercentDueAugustOneTwentyTwentySixMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeniorUnsecuredNotesThreePointSevenZeroPercentDueAugustOneTwentyTwentySixMember_lbl" xml:lang="en-US" id="id_10140147_1721280_3_1">Senior Unsecured Notes Three Point Seven Zero Percent Due August One Twenty Twenty Six [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeniorUnsecuredNotesThreePointSevenZeroPercentDueAugustOneTwentyTwentySixMember_lbl" xml:lang="en-US" id="id_10140147_1721280_1_1">Senior Unsecured Notes Three Point Seven Zero Percent Due August One Twenty Twenty Six [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeniorUnsecuredNotesThreePointSevenZeroPercentDueAugustOneTwentyTwentySixMember_lbl" xml:lang="en-US" id="id_10140147_1721280_2_1">3.70% Senior Notes, Due August 1, 2026</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeniorUnsecuredNotesThreePointSevenZeroPercentDueAugustOneTwentyTwentySixMember" xlink:to="utl_SeniorUnsecuredNotesThreePointSevenZeroPercentDueAugustOneTwentyTwentySixMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SeriesSixMember" xlink:label="utl_SeriesSixMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SeriesSixMember_lbl" xml:lang="en-US" id="id_10140147_1594439_3_1">Series 6 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SeriesSixMember_lbl" xml:lang="en-US" id="id_10140147_1594439_1_1">Series 6 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SeriesSixMember_lbl" xml:lang="en-US" id="id_10140147_1594439_2_1">Series 6</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SeriesSixMember" xlink:to="utl_SeriesSixMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xml:lang="en-US" id="id_10140147_1559864_1_1">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xml:lang="en-US" id="id_10140147_1559864_2_1">Restricted stock vesting period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_lbl" xml:lang="en-US" id="id_10140147_1556514_1_1">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_lbl" xml:lang="en-US" id="id_10140147_1556514_2_1">Restricted stock vesting percentage annually</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_10140147_1670423_3_1">Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Fully Vested Grants in Period, Weighted Average Grant Date Fair Value.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_10140147_1670423_1_1">Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options,Fully Vested Grants in Period, Weighted Average Grant Date Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_10140147_1670423_2_1">Restricted Stock Units Granted</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:to="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedGrantsInPeriodWeightedAverageGrantDateFairValue_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedNumber" xlink:label="utl_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedNumber"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedNumber_lbl" xml:lang="en-US" id="id_10140147_1616933_3_1">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Fully Vested, Number</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedNumber_lbl" xml:lang="en-US" id="id_10140147_1616933_1_1">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Fully Vested, Number</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="utl_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedNumber_lbl" xml:lang="en-US" id="id_10140147_1616933_4_1">Ending Restricted Stock Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="utl_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedNumber_lbl" xml:lang="en-US" id="id_10140147_1616933_5_1">Beginning Restricted Stock Units</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedNumber" xlink:to="utl_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedNumber_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettled" xlink:label="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettled"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettled_lbl" xml:lang="en-US" id="id_10140147_1608202_3_1">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Fully Vested Settled.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettled_lbl" xml:lang="en-US" id="id_10140147_1608202_1_1">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Fully Vested Settled</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettled_lbl" xml:lang="en-US" id="id_10140147_1608202_14_1">Restricted Stock Units Settled</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettled" xlink:to="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettled_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettledInPeriodWeightedAverageGrantDateFairValue" xlink:label="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettledInPeriodWeightedAverageGrantDateFairValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettledInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_10140147_1695265_3_1">Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Fully Vested Settled in Period, Weighted Average Grant Date Fair Value.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettledInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_10140147_1695265_1_1">Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options,Fully Vested Settled in Period, Weighted Average Grant Date Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettledInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_10140147_1695265_2_1">Restricted Stock Units Settled</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettledInPeriodWeightedAverageGrantDateFairValue" xlink:to="utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettledInPeriodWeightedAverageGrantDateFairValue_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SignificantAccountingPoliciesLineItems_lbl" xml:lang="en-US" id="id_10140147_1668694_3_1">Significant Accounting Policies [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SignificantAccountingPoliciesLineItems_lbl" xml:lang="en-US" id="id_10140147_1668694_1_1">Significant Accounting Policies [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SignificantAccountingPoliciesLineItems_lbl" xml:lang="en-US" id="id_10140147_1668694_2_1">Significant Accounting Policies [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SignificantAccountingPoliciesLineItems" xlink:to="utl_SignificantAccountingPoliciesLineItems_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SignificantAccountingPoliciesTable_lbl" xml:lang="en-US" id="id_10140147_1675863_3_1">Significant Accounting Policies [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SignificantAccountingPoliciesTable_lbl" xml:lang="en-US" id="id_10140147_1675863_1_1">Significant Accounting Policies [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SignificantAccountingPoliciesTable_lbl" xml:lang="en-US" id="id_10140147_1675863_2_1">Significant Accounting Policies [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SignificantAccountingPoliciesTable" xlink:to="utl_SignificantAccountingPoliciesTable_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US" id="id_10140147_1549971_1_1">Significant Accounting Policies [Text Block]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="us-gaap_SiteContingencyLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SiteContingencyLineItems_lbl" xml:lang="en-US" id="id_10140147_1549958_1_1">Site Contingency [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SiteContingencyLineItems_lbl" xml:lang="en-US" id="id_10140147_1549958_2_1">Site Contingency [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SiteContingencyLineItems" xlink:to="us-gaap_SiteContingencyLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SiteContingencyTable" xlink:label="us-gaap_SiteContingencyTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SiteContingencyTable_lbl" xml:lang="en-US" id="id_10140147_1549960_1_1">Site Contingency [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SiteContingencyTable_lbl" xml:lang="en-US" id="id_10140147_1549960_2_1">Site Contingency [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SiteContingencyTable" xlink:to="us-gaap_SiteContingencyTable_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SolarMassachusettsRenewableTargetProgramMember" xlink:label="utl_SolarMassachusettsRenewableTargetProgramMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SolarMassachusettsRenewableTargetProgramMember_lbl" xml:lang="en-US" id="id_10140147_1765950_3_1">Solar Massachusetts Renewable Target Program [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SolarMassachusettsRenewableTargetProgramMember_lbl" xml:lang="en-US" id="id_10140147_1765950_1_1">Solar Massachusetts Renewable Target Program [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SolarMassachusettsRenewableTargetProgramMember_lbl" xml:lang="en-US" id="id_10140147_1765950_2_1">Solar Massachusetts Renewable Target Program</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SolarMember_lbl" xml:lang="en-US" id="id_10140147_1706716_3_1">Solar [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SolarMember_lbl" xml:lang="en-US" id="id_10140147_1706716_1_1">Solar [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SolarMember_lbl" xml:lang="en-US" id="id_10140147_1706716_2_1">Solar Generation</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xml:lang="en-US" id="id_10140147_1553300_2_1">Equity Components</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementEquityComponentsAxis" xlink:to="us-gaap_StatementEquityComponentsAxis_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementGeographicalAxis_lbl" xml:lang="en-US" id="id_10140147_1553301_2_1">Geographical [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementGeographicalAxis" xlink:to="us-gaap_StatementGeographicalAxis_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US" id="id_10140147_1553302_1_1">Statement [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US" id="id_10140147_1553302_2_1">Statement [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US" id="id_10140147_1549980_2_1">Statement of Cash Flows [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xml:lang="en-US" id="id_10140147_1556600_2_1">Statement of Financial Position [Abstract]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_10140147_1553304_2_1">Statement of Stockholders' Equity [Abstract]</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:to="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_lbl" xml:lang="en-US" id="id_10140147_1561675_1_1">Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_lbl" xml:lang="en-US" id="id_10140147_1561675_2_1">Stock Compensation Plans</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SublimitForIssuanceOfStandbyLettersOfCredit_lbl" xml:lang="en-US" id="id_10140147_1596365_3_1">Sublimit For Issuance Of Standby Letters Of Credit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SublimitForIssuanceOfStandbyLettersOfCredit_lbl" xml:lang="en-US" id="id_10140147_1596365_1_1">Sublimit For Issuance Of Standby Letters Of Credit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SublimitForIssuanceOfStandbyLettersOfCredit_lbl" xml:lang="en-US" id="id_10140147_1596365_2_1">Sublimit for the issuance of standby letters of credit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SublimitForIssuanceOfStandbyLettersOfCredit" xlink:to="utl_SublimitForIssuanceOfStandbyLettersOfCredit_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventMember_lbl" xml:lang="en-US" id="id_10140147_1553328_1_1">Subsequent Event [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventMember_lbl" xml:lang="en-US" id="id_10140147_1553328_2_1">Subsequent Event</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventMember" xlink:to="us-gaap_SubsequentEventMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventsPolicyPolicyTextBlock" xlink:label="us-gaap_SubsequentEventsPolicyPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsPolicyPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1559975_1_1">Subsequent Events, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventsPolicyPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1559975_2_1">Subsequent Events</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsPolicyPolicyTextBlock" xlink:to="us-gaap_SubsequentEventsPolicyPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="us-gaap_SubsequentEventTypeAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xml:lang="en-US" id="id_10140147_1559977_1_1">Subsequent Event Type [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xml:lang="en-US" id="id_10140147_1559977_2_1">Subsequent Event Type [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeAxis" xlink:to="us-gaap_SubsequentEventTypeAxis_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xml:lang="en-US" id="id_10140147_1553330_1_1">Subsequent Event Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xml:lang="en-US" id="id_10140147_1553330_2_1">Subsequent Event Type [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeDomain" xlink:to="us-gaap_SubsequentEventTypeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis" xlink:label="us-gaap_SubsidiarySaleOfStockAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xml:lang="en-US" id="id_10140147_1553338_1_1">Sale of Stock [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xml:lang="en-US" id="id_10140147_1553338_2_1">Sale of Stock [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsidiarySaleOfStockAxis" xlink:to="us-gaap_SubsidiarySaleOfStockAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US" id="id_10140147_1556659_1_1">Supplemental Cash Flow Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US" id="id_10140147_1556659_2_1">Supplemental Cash Flow Information:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalCashFlowInformationAbstract" xlink:to="us-gaap_SupplementalCashFlowInformationAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember" xlink:label="us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_lbl" xml:lang="en-US" id="id_10140147_1556660_1_1">Supplemental Employee Retirement Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_lbl" xml:lang="en-US" id="id_10140147_1556660_2_1">Supplemental Employee Retirement Plans, Defined Benefit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember" xlink:to="us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_SupplyCommitmentPolicyTextBlock" xlink:label="utl_SupplyCommitmentPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_SupplyCommitmentPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1734988_3_1">Nature and amounts of items recorded as Energy Supply Obligations.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_SupplyCommitmentPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1734988_1_1">Supply Commitment [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_SupplyCommitmentPolicyTextBlock_lbl" xml:lang="en-US" id="id_10140147_1734988_2_1">Energy Supply Obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_SupplyCommitmentPolicyTextBlock" xlink:to="utl_SupplyCommitmentPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SupplyCommitmentTableTextBlock" xlink:label="us-gaap_SupplyCommitmentTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SupplyCommitmentTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1550029_1_1">Supply Commitment [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SupplyCommitmentTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1550029_2_1">Components of Energy Supply Obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplyCommitmentTableTextBlock" xlink:to="us-gaap_SupplyCommitmentTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilityRecoveryRefund" xlink:label="utl_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilityRecoveryRefund"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilityRecoveryRefund_lbl" xml:lang="en-US" id="id_10140147_1774268_3_1">Tax Cuts and Jobs Act of 2017 Change in Tax Rate Regulatory Liability Recovery Refund</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilityRecoveryRefund_lbl" xml:lang="en-US" id="id_10140147_1774268_1_1">Tax Cuts and Jobs Act of 2017 Change in Tax Rate Regulatory Liability Recovery Refund</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TaxPeriodAxis_lbl" xml:lang="en-US" id="id_10140147_1553368_1_1">Tax Period [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TaxPeriodAxis_lbl" xml:lang="en-US" id="id_10140147_1553368_2_1">Tax Period [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TaxPeriodAxis" xlink:to="us-gaap_TaxPeriodAxis_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TaxPeriodDomain_lbl" xml:lang="en-US" id="id_10140147_1550044_1_1">Tax Period [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TaxPeriodDomain_lbl" xml:lang="en-US" id="id_10140147_1550044_2_1">Tax Period [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TaxPeriodDomain" xlink:to="us-gaap_TaxPeriodDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_TaxYear2018Member" xlink:label="utl_TaxYear2018Member"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_TaxYear2018Member_lbl" xml:lang="en-US" id="id_10140147_1619134_3_1">Tax Year 2018.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_TaxYear2018Member_lbl" xml:lang="en-US" id="id_10140147_1619134_1_1">Tax Year 2018 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_TaxYear2018Member_lbl" xml:lang="en-US" id="id_10140147_1619134_2_1">Tax Year 2018</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TextBlockAbstract_lbl" xml:lang="en-US" id="id_10140147_1560564_1_1">Text Block [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TextBlockAbstract_lbl" xml:lang="en-US" id="id_10140147_1560564_2_1">Text Block [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TextBlockAbstract" xlink:to="us-gaap_TextBlockAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy" xlink:label="us-gaap_TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy_lbl" xml:lang="en-US" id="id_10140147_1560591_1_1">Trade and Other Accounts Receivable, Unbilled Receivables, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy_lbl" xml:lang="en-US" id="id_10140147_1560591_2_1">Accrued Revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy" xlink:to="us-gaap_TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TradingSecurities" xlink:label="us-gaap_TradingSecurities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TradingSecurities_lbl" xml:lang="en-US" id="id_10140147_1568208_1_1">Trading Securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TradingSecurities_lbl" xml:lang="en-US" id="id_10140147_1568208_2_1">Investments in trading securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_TradingSecurities_lbl" xml:lang="en-US" id="id_10140147_1568208_12_1">Trading Securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TradingSecurities" xlink:to="us-gaap_TradingSecurities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_TradingSymbol" xlink:label="dei_TradingSymbol"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_TradingSymbol_lbl" xml:lang="en-US" id="id_10140147_1550084_2_1">Trading Symbol</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="us-gaap_TypeOfAdoptionMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xml:lang="en-US" id="id_10140147_1560627_1_1">Type of Adoption [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xml:lang="en-US" id="id_10140147_1560627_2_1">Type of Adoption [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TypeOfAdoptionMember" xlink:to="us-gaap_TypeOfAdoptionMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TypeOfReserveDomain" xlink:label="us-gaap_TypeOfReserveDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TypeOfReserveDomain_lbl" xml:lang="en-US" id="id_10140147_1550106_1_1">Type of Reserve [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TypeOfReserveDomain_lbl" xml:lang="en-US" id="id_10140147_1550106_2_1">Type of Reserve [Domain]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnamortizedDebtIssuanceExpense_lbl" xml:lang="en-US" id="id_10140147_1565217_1_1">Unamortized Debt Issuance Expense</label>
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    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_UnbilledAccountsReceivableTableTextBlock" xlink:label="utl_UnbilledAccountsReceivableTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_UnbilledAccountsReceivableTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1645959_3_1">Description of the components and amounts included in Accrued Revenue.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_UnbilledAccountsReceivableTableTextBlock_lbl" xml:lang="en-US" id="id_10140147_1645959_2_1">Components of Accrued Revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_UnbilledAccountsReceivableTableTextBlock" xlink:to="utl_UnbilledAccountsReceivableTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnbilledContractsReceivable" xlink:label="us-gaap_UnbilledContractsReceivable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnbilledContractsReceivable_lbl" xml:lang="en-US" id="id_10140147_1565222_1_1">Unbilled Contracts Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UnbilledContractsReceivable_lbl" xml:lang="en-US" id="id_10140147_1565222_2_1">Accrued Revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnbilledContractsReceivable" xlink:to="us-gaap_UnbilledContractsReceivable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnbilledRevenuesMember" xlink:label="us-gaap_UnbilledRevenuesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnbilledRevenuesMember_lbl" xml:lang="en-US" id="id_10140147_1553451_1_1">Unbilled Revenues [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UnbilledRevenuesMember_lbl" xml:lang="en-US" id="id_10140147_1553451_2_1">Unbilled Revenues</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnbilledRevenuesMember" xlink:to="us-gaap_UnbilledRevenuesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_UncategorizedAbstract" xlink:label="utl_UncategorizedAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_UncategorizedAbstract_lbl" xml:lang="en-US" id="id_10140147_1568812_3_1">Uncategorized [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_UncategorizedAbstract_lbl" xml:lang="en-US" id="id_10140147_1568812_1_1">Uncategorized [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_UncategorizedAbstract_lbl" xml:lang="en-US" id="id_10140147_1568812_2_1">Uncategorized [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_UncategorizedAbstract" xlink:to="utl_UncategorizedAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_UnitilEnergySystemsIncMember" xlink:label="utl_UnitilEnergySystemsIncMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_UnitilEnergySystemsIncMember_lbl" xml:lang="en-US" id="id_10140147_1615212_3_1">Unitil Energy Systems Inc</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_UnitilEnergySystemsIncMember_lbl" xml:lang="en-US" id="id_10140147_1615212_1_1">Unitil Energy Systems Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_UnitilEnergySystemsIncMember_lbl" xml:lang="en-US" id="id_10140147_1615212_2_1">Unitil Energy Systems Inc</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_UnitilEnergySystemsIncMember" xlink:to="utl_UnitilEnergySystemsIncMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_UnitilRealtyCorpMember" xlink:label="utl_UnitilRealtyCorpMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_UnitilRealtyCorpMember_lbl" xml:lang="en-US" id="id_10140147_1645280_3_1">Unitil Realty Corp [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_UnitilRealtyCorpMember_lbl" xml:lang="en-US" id="id_10140147_1645280_1_1">Unitil Realty Corp [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_UnitilRealtyCorpMember_lbl" xml:lang="en-US" id="id_10140147_1645280_2_1">Unitil Realty Corp</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_UnitilRealtyCorpMember" xlink:to="utl_UnitilRealtyCorpMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_UnitilServiceCorpMember" xlink:label="utl_UnitilServiceCorpMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_UnitilServiceCorpMember_lbl" xml:lang="en-US" id="id_10140147_1632782_3_1">Unitil Service Corp [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_UnitilServiceCorpMember_lbl" xml:lang="en-US" id="id_10140147_1632782_1_1">Unitil Service Corp [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_UnitilServiceCorpMember_lbl" xml:lang="en-US" id="id_10140147_1632782_2_1">Unitil Service Corp.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_UnitilServiceCorpMember" xlink:to="utl_UnitilServiceCorpMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnregulatedOperatingRevenue" xlink:label="us-gaap_UnregulatedOperatingRevenue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnregulatedOperatingRevenue_lbl" xml:lang="en-US" id="id_10140147_1563376_1_1">Unregulated Operating Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UnregulatedOperatingRevenue_lbl" xml:lang="en-US" id="id_10140147_1563376_2_1">Other Operating Revenue - Non-Regulated</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnregulatedOperatingRevenue" xlink:to="us-gaap_UnregulatedOperatingRevenue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnregulatedOperationMember" xlink:label="us-gaap_UnregulatedOperationMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnregulatedOperationMember_lbl" xml:lang="en-US" id="id_10140147_1557318_1_1">Unregulated Operation [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UnregulatedOperationMember_lbl" xml:lang="en-US" id="id_10140147_1557318_2_1">Unregulated Operation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnregulatedOperationMember" xlink:to="us-gaap_UnregulatedOperationMember_lbl"/>
    <loc xlink:type="locator" xlink:href="utl-20180331.xsd#utl_UtilitiesMember" xlink:label="utl_UtilitiesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="utl_UtilitiesMember_lbl" xml:lang="en-US" id="id_10140147_1613652_3_1">Utilities [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="utl_UtilitiesMember_lbl" xml:lang="en-US" id="id_10140147_1613652_1_1">Utilities [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="utl_UtilitiesMember_lbl" xml:lang="en-US" id="id_10140147_1613652_2_1">Utilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="utl_UtilitiesMember" xlink:to="utl_UtilitiesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UtilitiesOperatingExpense" xlink:label="us-gaap_UtilitiesOperatingExpense"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UtilitiesOperatingExpense_lbl" xml:lang="en-US" id="id_10140147_1566213_1_1">Utilities Operating Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_UtilitiesOperatingExpense_lbl" xml:lang="en-US" id="id_10140147_1566213_6_1">Total Operating Expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UtilitiesOperatingExpense" xlink:to="us-gaap_UtilitiesOperatingExpense_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization" xlink:label="us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization_lbl" xml:lang="en-US" id="id_10140147_1565235_1_1">Utilities Operating Expense, Depreciation and Amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization_lbl" xml:lang="en-US" id="id_10140147_1565235_2_1">Depreciation and Amortization</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization" xlink:to="us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UtilitiesOperatingExpenseGasAndPetroleumPurchased" xlink:label="us-gaap_UtilitiesOperatingExpenseGasAndPetroleumPurchased"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UtilitiesOperatingExpenseGasAndPetroleumPurchased_lbl" xml:lang="en-US" id="id_10140147_1568233_1_1">Utilities Operating Expense, Gas and Petroleum Purchased</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UtilitiesOperatingExpenseGasAndPetroleumPurchased_lbl" xml:lang="en-US" id="id_10140147_1568233_2_1">Cost of Gas Sales</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UtilitiesOperatingExpenseGasAndPetroleumPurchased" xlink:to="us-gaap_UtilitiesOperatingExpenseGasAndPetroleumPurchased_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations" xlink:label="us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations_lbl" xml:lang="en-US" id="id_10140147_1567230_1_1">Utilities Operating Expense, Maintenance and Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations_lbl" xml:lang="en-US" id="id_10140147_1567230_2_1">Operation and Maintenance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations_lbl" xml:lang="en-US" id="id_10140147_1567230_12_1">Operation and Maintenance Expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations" xlink:to="us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UtilitiesOperatingExpensePurchasedPower" xlink:label="us-gaap_UtilitiesOperatingExpensePurchasedPower"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UtilitiesOperatingExpensePurchasedPower_lbl" xml:lang="en-US" id="id_10140147_1565239_1_1">Utilities Operating Expense, Purchased Power</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UtilitiesOperatingExpensePurchasedPower_lbl" xml:lang="en-US" id="id_10140147_1565239_2_1">Cost of Electric Sales</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UtilitiesOperatingExpensePurchasedPower" xlink:to="us-gaap_UtilitiesOperatingExpensePurchasedPower_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UtilitiesOperatingExpenseTaxes" xlink:label="us-gaap_UtilitiesOperatingExpenseTaxes"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UtilitiesOperatingExpenseTaxes_lbl" xml:lang="en-US" id="id_10140147_1565240_1_1">Utilities Operating Expense, Taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UtilitiesOperatingExpenseTaxes_lbl" xml:lang="en-US" id="id_10140147_1565240_2_1">Taxes Other than Income Taxes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UtilitiesOperatingExpenseTaxes" xlink:to="us-gaap_UtilitiesOperatingExpenseTaxes_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UtilityPlantDomain" xlink:label="us-gaap_UtilityPlantDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UtilityPlantDomain_lbl" xml:lang="en-US" id="id_10140147_1554023_1_1">Utility Plant [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UtilityPlantDomain_lbl" xml:lang="en-US" id="id_10140147_1554023_2_1">Utility Plant [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UtilityPlantDomain" xlink:to="us-gaap_UtilityPlantDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UtilityRevenueAbstract" xlink:label="us-gaap_UtilityRevenueAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UtilityRevenueAbstract_lbl" xml:lang="en-US" id="id_10140147_1554024_1_1">Electric and Gas Revenue [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UtilityRevenueAbstract_lbl" xml:lang="en-US" id="id_10140147_1554024_2_1">Electric and Gas Revenue [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UtilityRevenueAbstract" xlink:to="us-gaap_UtilityRevenueAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UtilityRevenueAndExpenseRecognitionPolicy" xlink:label="us-gaap_UtilityRevenueAndExpenseRecognitionPolicy"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UtilityRevenueAndExpenseRecognitionPolicy_lbl" xml:lang="en-US" id="id_10140147_1560671_1_1">Utility, Revenue and Expense Recognition, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UtilityRevenueAndExpenseRecognitionPolicy_lbl" xml:lang="en-US" id="id_10140147_1560671_2_1">Utility Revenue Recognition</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UtilityRevenueAndExpenseRecognitionPolicy" xlink:to="us-gaap_UtilityRevenueAndExpenseRecognitionPolicy_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowanceLineItems" xlink:label="us-gaap_ValuationAllowanceLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ValuationAllowanceLineItems_lbl" xml:lang="en-US" id="id_10140147_1557337_1_1">Valuation Allowance [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ValuationAllowanceLineItems_lbl" xml:lang="en-US" id="id_10140147_1557337_2_1">Valuation Allowance [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAllowanceLineItems" xlink:to="us-gaap_ValuationAllowanceLineItems_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ValuationAllowanceTable_lbl" xml:lang="en-US" id="id_10140147_1554032_1_1">Valuation Allowance [Table]</label>
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</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>13
<FILENAME>utl-20180331_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="US-ASCII"?>
<!-- DFS Xcelerate Taxonomy Presentation Linkbase - http://www.dfsco.com/financial-services/ -->
<!-- Version: 6.23.6 -->
<!-- Round: 3 -->
<!-- Creation date: 2018-04-25T19:22:44Z -->
<!-- Copyright (c) 2017 Donnelley Financial, LLC. All Rights Reserved. -->
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6785084144">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Document and Entity Information - shares<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
<th class="th" colspan="1"></th>
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<tr>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Apr. 23, 2018</div></th>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentInformationLineItems', window );"><strong>Document Information [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentType', window );">Document Type</a></td>
<td class="text">10-Q<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">Mar. 31,  2018<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentFiscalYearFocus', window );">Document Fiscal Year Focus</a></td>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">--12-31<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityFilerCategory', window );">Entity Filer Category</a></td>
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<td class="text">&#160;<span></span>
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<td class="nump">14,861,228<span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>If the value is true, then the document is an amendment to previously-filed/accepted document.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>This is focus fiscal period of the document report. For a first quarter 2006 quarterly report, which may also provide financial information from prior periods, the first fiscal quarter should be given as the fiscal period focus. Values: FY, Q1, Q2, Q3, Q4, H1, H2, M9, T1, T2, T3, M8, CY.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word "Other".</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12b<br> -Subsection 1<br></p></div>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCommonStockSharesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityFilerCategory">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate whether the registrant is one of the following: (1) Large Accelerated Filer, (2) Accelerated Filer, (3) Non-accelerated Filer, (4) Smaller Reporting Company (Non-accelerated) or (5) Smaller Reporting Accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityFilerCategory</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:filerCategoryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityRegistrantName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12b<br> -Subsection 1<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityRegistrantName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_TradingSymbol">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Trading symbol of an instrument as listed on an exchange.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_TradingSymbol</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<head>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6785349904">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>CONSOLIDATED STATEMENTS OF EARNINGS - USD ($)<br> shares in Millions, $ in Millions</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenuesAbstract', window );"><strong>Operating Revenues</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedOperatingRevenueGas', window );">Gas</a></td>
<td class="nump">$ 87.0<span></span>
</td>
<td class="nump">$ 74.8<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedOperatingRevenueElectricNonNuclear', window );">Electric</a></td>
<td class="nump">57.5<span></span>
</td>
<td class="nump">49.5<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherSalesRevenueNet', window );">Other</a></td>
<td class="nump">1.3<span></span>
</td>
<td class="nump">1.7<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedAndUnregulatedOperatingRevenue', window );">Total Operating Revenues</a></td>
<td class="nump">145.8<span></span>
</td>
<td class="nump">126.0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingExpensesAbstract', window );"><strong>Operating Expenses</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UtilitiesOperatingExpenseGasAndPetroleumPurchased', window );">Cost of Gas Sales</a></td>
<td class="nump">47.1<span></span>
</td>
<td class="nump">36.8<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UtilitiesOperatingExpensePurchasedPower', window );">Cost of Electric Sales</a></td>
<td class="nump">35.2<span></span>
</td>
<td class="nump">27.5<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations', window );">Operation and Maintenance</a></td>
<td class="nump">17.3<span></span>
</td>
<td class="nump">16.0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization', window );">Depreciation and Amortization</a></td>
<td class="nump">12.3<span></span>
</td>
<td class="nump">12.5<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UtilitiesOperatingExpenseTaxes', window );">Taxes Other than Income Taxes</a></td>
<td class="nump">5.8<span></span>
</td>
<td class="nump">5.5<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UtilitiesOperatingExpense', window );">Total Operating Expenses</a></td>
<td class="nump">117.7<span></span>
</td>
<td class="nump">98.3<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Operating Income</a></td>
<td class="nump">28.1<span></span>
</td>
<td class="nump">27.7<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InterestIncomeExpenseNonoperatingNet', window );">Interest Expense, net</a></td>
<td class="nump">6.0<span></span>
</td>
<td class="nump">6.0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherNonoperatingIncomeExpense', window );">Other Expense (Income), net</a></td>
<td class="nump">1.7<span></span>
</td>
<td class="nump">1.6<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest', window );">Income Before Income Taxes</a></td>
<td class="nump">20.4<span></span>
</td>
<td class="nump">20.1<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeTaxExpenseBenefit', window );">Income Taxes</a></td>
<td class="nump">4.8<span></span>
</td>
<td class="nump">7.7<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net Income</a></td>
<td class="nump">$ 15.6<span></span>
</td>
<td class="nump">$ 12.4<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EarningsPerShareBasicAndDiluted', window );">Net Income Per Common Share (Basic and Diluted)</a></td>
<td class="nump">$ 1.06<span></span>
</td>
<td class="nump">$ 0.88<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted', window );">Weighted Average Common Shares Outstanding - (Basic and Diluted)</a></td>
<td class="nump">14.8<span></span>
</td>
<td class="nump">14.0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockDividendsPerShareDeclared', window );">Dividends Declared Per Share of Common Stock</a></td>
<td class="nump">$ 0.365<span></span>
</td>
<td class="nump">$ 0.360<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockDividendsPerShareDeclared">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate dividends declared during the period for each share of common stock outstanding.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=27012166&amp;loc=d3e187085-122770<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockDividendsPerShareDeclared</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareBasicAndDiluted">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements.  Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period.  Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EarningsPerShareBasicAndDiluted</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 940<br> -SubTopic 20<br> -Section 25<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=68072869&amp;loc=d3e41242-110953<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03(10))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 225<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(15))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879574&amp;loc=d3e536633-122882<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 225<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-04(8))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879464&amp;loc=d3e573970-122913<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxExpenseBenefit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -Subparagraph (a),(b)<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32639-109319<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08.(h))<br> -URI http://asc.fasb.org/extlink&amp;oid=26873400&amp;loc=d3e23780-122690<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxExpenseBenefit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InterestIncomeExpenseNonoperatingNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The net amount of nonoperating interest income (expense).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InterestIncomeExpenseNonoperatingNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3602-108585<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 225<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(22))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879574&amp;loc=d3e536633-122882<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 225<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-04(18))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879464&amp;loc=d3e573970-122913<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03(20))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetIncomeLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingExpensesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingExpensesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The net result for the period of deducting operating expenses from operating revenues.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingIncomeLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherNonoperatingIncomeExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of income (expense) related to nonoperating activities, classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.9)<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherNonoperatingIncomeExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherSalesRevenueNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after sales adjustments, returns, allowances, and discounts, of revenue classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.1(a),(d))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherSalesRevenueNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatedAndUnregulatedOperatingRevenue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The total amount of operating revenues recognized during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatedAndUnregulatedOperatingRevenue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatedOperatingRevenueElectricNonNuclear">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of regulated power revenues recognized during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatedOperatingRevenueElectricNonNuclear</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatedOperatingRevenueGas">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of regulated gas operating revenues recognized during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatedOperatingRevenueGas</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RevenuesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RevenuesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UtilitiesOperatingExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of operating expense of regulated operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.2(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UtilitiesOperatingExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of operating expense for depreciation and amortization of regulated operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.2(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UtilitiesOperatingExpenseGasAndPetroleumPurchased">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of operating expense for purchased gas and petroleum of regulated operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.2(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UtilitiesOperatingExpenseGasAndPetroleumPurchased</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of operating expense for routine plant maintenance, repairs and operations of regulated operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.2(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UtilitiesOperatingExpensePurchasedPower">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of operating expense for purchased power of regulated operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.2(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UtilitiesOperatingExpensePurchasedPower</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UtilitiesOperatingExpenseTaxes">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of operating expense for taxes other than income taxes of regulated operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.2(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UtilitiesOperatingExpenseTaxes</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>17
<FILENAME>R3.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6786588672">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>CONSOLIDATED BALANCE SHEETS - USD ($)<br> $ in Millions</strong></div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsCurrentAbstract', window );"><strong>Current Assets:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAtCarryingValue', window );">Cash and Cash Equivalents</a></td>
<td class="nump">$ 9.5<span></span>
</td>
<td class="nump">$ 8.9<span></span>
</td>
<td class="nump">$ 8.8<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsReceivableNetCurrent', window );">Accounts Receivable, net</a></td>
<td class="nump">74.4<span></span>
</td>
<td class="nump">67.4<span></span>
</td>
<td class="nump">57.6<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UnbilledContractsReceivable', window );">Accrued Revenue</a></td>
<td class="nump">45.1<span></span>
</td>
<td class="nump">53.3<span></span>
</td>
<td class="nump">41.3<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherReceivablesNetCurrent', window );">Exchange Gas Receivable</a></td>
<td class="nump">0.2<span></span>
</td>
<td class="nump">5.8<span></span>
</td>
<td class="nump">2.1<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageCostInventoryAmount', window );">Gas Inventory</a></td>
<td class="nump">0.4<span></span>
</td>
<td class="nump">0.6<span></span>
</td>
<td class="nump">0.3<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InventoryRawMaterialsAndSupplies', window );">Materials and Supplies</a></td>
<td class="nump">7.8<span></span>
</td>
<td class="nump">6.9<span></span>
</td>
<td class="nump">7.1<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PrepaidExpenseAndOtherAssets', window );">Prepayments and Other</a></td>
<td class="nump">7.1<span></span>
</td>
<td class="nump">8.4<span></span>
</td>
<td class="nump">8.9<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsCurrent', window );">Total Current Assets</a></td>
<td class="nump">144.5<span></span>
</td>
<td class="nump">151.3<span></span>
</td>
<td class="nump">126.1<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract', window );"><strong>Utility Plant:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PublicUtilitiesPropertyPlantAndEquipmentGas', window );">Gas</a></td>
<td class="nump">706.7<span></span>
</td>
<td class="nump">699.6<span></span>
</td>
<td class="nump">642.0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution', window );">Electric</a></td>
<td class="nump">478.8<span></span>
</td>
<td class="nump">476.7<span></span>
</td>
<td class="nump">440.9<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon', window );">Common</a></td>
<td class="nump">69.1<span></span>
</td>
<td class="nump">67.4<span></span>
</td>
<td class="nump">35.9<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress', window );">Construction Work in Progress</a></td>
<td class="nump">32.1<span></span>
</td>
<td class="nump">35.5<span></span>
</td>
<td class="nump">68.6<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService', window );">Total Utility Plant</a></td>
<td class="nump">1,286.7<span></span>
</td>
<td class="nump">1,279.2<span></span>
</td>
<td class="nump">1,187.4<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation', window );">Less: Accumulated Depreciation</a></td>
<td class="nump">314.3<span></span>
</td>
<td class="nump">307.7<span></span>
</td>
<td class="nump">296.5<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet', window );">Net Utility Plant</a></td>
<td class="nump">972.4<span></span>
</td>
<td class="nump">971.5<span></span>
</td>
<td class="nump">890.9<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsNoncurrentAbstract', window );"><strong>Other Noncurrent Assets:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetsNoncurrent', window );">Regulatory Assets</a></td>
<td class="nump">111.2<span></span>
</td>
<td class="nump">109.6<span></span>
</td>
<td class="nump">103.5<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherAssetsNoncurrent', window );">Other Assets</a></td>
<td class="nump">16.2<span></span>
</td>
<td class="nump">9.5<span></span>
</td>
<td class="nump">13.9<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsNoncurrent', window );">Total Other Noncurrent Assets</a></td>
<td class="nump">127.4<span></span>
</td>
<td class="nump">119.1<span></span>
</td>
<td class="nump">117.4<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Assets', window );">TOTAL ASSETS</a></td>
<td class="nump">1,244.3<span></span>
</td>
<td class="nump">1,241.9<span></span>
</td>
<td class="nump">1,134.4<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesCurrentAbstract', window );"><strong>Current Liabilities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsPayableCurrent', window );">Accounts Payable</a></td>
<td class="nump">30.1<span></span>
</td>
<td class="nump">41.5<span></span>
</td>
<td class="nump">28.1<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShortTermBorrowings', window );">Short-Term Debt</a></td>
<td class="nump">45.3<span></span>
</td>
<td class="nump">38.3<span></span>
</td>
<td class="nump">76.6<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtCurrent', window );">Long-Term Debt, Current Portion</a></td>
<td class="nump">29.8<span></span>
</td>
<td class="nump">29.8<span></span>
</td>
<td class="nump">30.0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilityCurrent', window );">Regulatory Liabilities</a></td>
<td class="nump">10.9<span></span>
</td>
<td class="nump">9.2<span></span>
</td>
<td class="nump">12.8<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EnergyMarketingContractLiabilitiesCurrent', window );">Energy Supply Obligations</a></td>
<td class="nump">7.8<span></span>
</td>
<td class="nump">9.7<span></span>
</td>
<td class="nump">9.0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedEnvironmentalLossContingenciesCurrent', window );">Environmental Obligations</a></td>
<td class="nump">0.6<span></span>
</td>
<td class="nump">0.5<span></span>
</td>
<td class="nump">0.5<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalLeaseObligationsCurrent', window );">Capital Lease Obligations</a></td>
<td class="nump">3.1<span></span>
</td>
<td class="nump">3.1<span></span>
</td>
<td class="nump">3.0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InterestPayableCurrent', window );">Interest Payable</a></td>
<td class="nump">6.9<span></span>
</td>
<td class="nump">4.4<span></span>
</td>
<td class="nump">6.0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherLiabilitiesCurrent', window );">Other Current Liabilities</a></td>
<td class="nump">11.8<span></span>
</td>
<td class="nump">14.5<span></span>
</td>
<td class="nump">11.0<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesCurrent', window );">Total Current Liabilities</a></td>
<td class="nump">146.3<span></span>
</td>
<td class="nump">151.0<span></span>
</td>
<td class="nump">177.0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesNoncurrentAbstract', window );"><strong>Noncurrent Liabilities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent', window );">Retirement Benefit Obligations</a></td>
<td class="nump">151.6<span></span>
</td>
<td class="nump">150.1<span></span>
</td>
<td class="nump">151.5<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredTaxLiabilitiesNoncurrent', window );">Deferred Income Taxes, net</a></td>
<td class="nump">87.0<span></span>
</td>
<td class="nump">82.9<span></span>
</td>
<td class="nump">106.0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetRetirementObligationsNoncurrent', window );">Cost of Removal Obligations</a></td>
<td class="nump">86.6<span></span>
</td>
<td class="nump">84.3<span></span>
</td>
<td class="nump">79.7<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilityNoncurrent', window );">Regulatory Liabilities</a></td>
<td class="nump">49.1<span></span>
</td>
<td class="nump">48.9<span></span>
</td>
<td class="nump">0.7<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalLeaseObligationsNoncurrent', window );">Capital Lease Obligations</a></td>
<td class="nump">4.9<span></span>
</td>
<td class="nump">5.7<span></span>
</td>
<td class="nump">7.5<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent', window );">Environmental Obligations</a></td>
<td class="nump">1.5<span></span>
</td>
<td class="nump">1.6<span></span>
</td>
<td class="nump">1.8<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherLiabilitiesNoncurrent', window );">Other Noncurrent Liabilities</a></td>
<td class="nump">5.7<span></span>
</td>
<td class="nump">4.3<span></span>
</td>
<td class="nump">4.9<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesNoncurrent', window );">Total Noncurrent Liabilities</a></td>
<td class="nump">386.4<span></span>
</td>
<td class="nump">377.8<span></span>
</td>
<td class="nump">352.1<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalizationLongtermDebtAndEquityAbstract', window );"><strong>Capitalization:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtNoncurrent', window );">Long-Term Debt, Less Current Portion</a></td>
<td class="nump">363.0<span></span>
</td>
<td class="nump">376.3<span></span>
</td>
<td class="nump">303.5<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquityAbstract', window );"><strong>Stockholders' Equity:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStocksIncludingAdditionalPaidInCapital', window );">Common Equity (Authorized: 25,000,000 and Outstanding:14,860,123, 14,107,741 and 14,815,585 Shares)</a></td>
<td class="nump">277.4<span></span>
</td>
<td class="nump">275.8<span></span>
</td>
<td class="nump">242.1<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RetainedEarningsAccumulatedDeficit', window );">Retained Earnings</a></td>
<td class="nump">71.0<span></span>
</td>
<td class="nump">60.8<span></span>
</td>
<td class="nump">59.5<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_CommonStockEquity', window );">Total Common Stock Equity</a></td>
<td class="nump">348.4<span></span>
</td>
<td class="nump">336.6<span></span>
</td>
<td class="nump">301.6<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockValue', window );">Preferred Stock</a></td>
<td class="nump">0.2<span></span>
</td>
<td class="nump">0.2<span></span>
</td>
<td class="nump">0.2<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Total Stockholders' Equity</a></td>
<td class="nump">348.6<span></span>
</td>
<td class="nump">336.8<span></span>
</td>
<td class="nump">301.8<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalizationLongtermDebtAndEquity', window );">Total Capitalization</a></td>
<td class="nump">711.6<span></span>
</td>
<td class="nump">713.1<span></span>
</td>
<td class="nump">605.3<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommitmentsAndContingencies', window );">Commitments and Contingencies (Notes 6 &amp; 7)</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesAndStockholdersEquity', window );">TOTAL LIABILITIES AND CAPITALIZATION</a></td>
<td class="nump">$ 1,244.3<span></span>
</td>
<td class="nump">$ 1,241.9<span></span>
</td>
<td class="nump">$ 1,134.4<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsPayableCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19(a))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsPayableCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsReceivableNetCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(3))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(4))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsReceivableNetCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccruedEnvironmentalLossContingenciesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -Section 50<br> -Paragraph 7<br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13207-110859<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=82911808&amp;loc=d3e14326-108349<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=82887183&amp;loc=d3e6911-107765<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -Section 50<br> -Paragraph 10<br> -Subparagraph (d)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13237-110859<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccruedEnvironmentalLossContingenciesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable after twelve months or beyond the next operating cycle if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.24)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -Section 50<br> -Paragraph 10<br> -Subparagraph (d)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13237-110859<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -Section 50<br> -Paragraph 7<br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13207-110859<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=82911808&amp;loc=d3e14326-108349<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetRetirementObligationsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=6392692&amp;loc=d3e7535-110849<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetRetirementObligationsNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Assets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(12))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(11))<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Assets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.9)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=82887183&amp;loc=d3e6801-107765<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=82887183&amp;loc=d3e6676-107765<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsCurrentAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsCurrentAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(14))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(10))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(12))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(15))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(11))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(13))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(17))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(16))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsNoncurrentAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsNoncurrentAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CapitalLeaseObligationsCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of capital lease obligation due within one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=84164817&amp;loc=d3e45280-112737<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(19))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=84164758&amp;loc=d3e45023-112735<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CapitalLeaseObligationsCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CapitalLeaseObligationsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=84164817&amp;loc=d3e45280-112737<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=84164758&amp;loc=d3e45023-112735<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.22)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CapitalLeaseObligationsNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CapitalizationLongtermDebtAndEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>This element represents the total consolidated (as applicable) capitalization of the entity which is comprised of its long-term debt and equity instruments. The table may be detailed by subsidiary (legal entity) and include information by type of debt or equity detailed by instrument.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CapitalizationLongtermDebtAndEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CapitalizationLongtermDebtAndEquityAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CapitalizationLongtermDebtAndEquityAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsAtCarryingValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=82887183&amp;loc=d3e6676-107765<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3044-108585<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.1)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAndCashEquivalentsAtCarryingValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommitmentsAndContingencies">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03.(a),19)<br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=82911808&amp;loc=d3e14326-108349<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03.17)<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.25)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommitmentsAndContingencies</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStocksIncludingAdditionalPaidInCapital">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of par value plus amounts in excess of par value or issuance value for common stock issued.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=27012166&amp;loc=d3e187085-122770<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30)(a)(1))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStocksIncludingAdditionalPaidInCapital</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxLiabilitiesNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, with jurisdictional netting and classified as noncurrent.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 45<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=84176650&amp;loc=d3e31931-109318<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 45<br> -Paragraph 9<br> -URI http://asc.fasb.org/extlink&amp;oid=84176650&amp;loc=d3e31958-109318<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=84176650&amp;loc=d3e31917-109318<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxLiabilitiesNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EnergyMarketingContractLiabilitiesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Current liabilities attributable to energy marketing activities (trading activities). Current energy marketing (trading activities) are when entities engage in both financial and physical trading to increase profits, manage their commodity price risk and enhance system reliability. They may trade electricity, coal, natural gas and oil. These entities typically use a variety of financial instruments, including forward contracts, options and swaps.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EnergyMarketingContractLiabilitiesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InterestPayableCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 9<br> -URI http://asc.fasb.org/extlink&amp;oid=82887183&amp;loc=d3e7018-107765<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 8<br> -URI http://asc.fasb.org/extlink&amp;oid=82887183&amp;loc=d3e6935-107765<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InterestPayableCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InventoryRawMaterialsAndSupplies">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.6(a)(4),(5))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InventoryRawMaterialsAndSupplies</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesAndStockholdersEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(23))<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(25))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(32))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesAndStockholdersEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.21)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesCurrentAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesCurrentAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of obligation due after one year or beyond the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(22))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 201.5-02(26))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(23))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 201.5-02(25))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 201.5-02(24))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesNoncurrentAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesNoncurrentAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LongTermDebtCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19,20)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LongTermDebtCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LongTermDebtNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.22)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LongTermDebtNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherAssetsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of noncurrent assets classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.17)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherAssetsNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherLiabilitiesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 5<br> -URI http://asc.fasb.org/extlink&amp;oid=82887183&amp;loc=d3e6904-107765<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=82887183&amp;loc=d3e6911-107765<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherLiabilitiesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherLiabilitiesNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.24)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherLiabilitiesNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherReceivablesNetCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherReceivablesNetCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of liability, recognized in statement of financial position, for pension, other postretirement and postemployment benefits, classified as noncurrent.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(24))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 712<br> -SubTopic 10<br> -Section 25<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=6410138&amp;loc=d3e79691-111665<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=64852052&amp;loc=d3e1703-114919<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 45<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=64852052&amp;loc=d3e1731-114919<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PrepaidExpenseAndOtherAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PrepaidExpenseAndOtherAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Period end book value of accumulated depreciation on property, plant and equipment (PPE) that is owned by the regulated operations of the public utility.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Period end amount of property, plant and equipment (PPE) related to regulated assets common to business units.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Period end amount of construction work in progress in public utility.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Period end amount of total net PPE.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Period end amount of total gross PPE.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Period end amount of property, plant and equipment (PPE) related to transmission and distribution owned by public utility.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssetsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 340<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6499975&amp;loc=d3e44250-110382<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssetsNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilityCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 405<br> -Section 25<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6500807&amp;loc=d3e48068-110394<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilityCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilityNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.24)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilityNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RetainedEarningsAccumulatedDeficit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cumulative amount of the reporting entity's undistributed earnings or deficit.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(23)(a)(4))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=27012166&amp;loc=d3e187085-122770<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30)(a)(3))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RetainedEarningsAccumulatedDeficit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShortTermBorrowings">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(19)(a))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(13))<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(16)(a)(1))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShortTermBorrowings</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockholdersEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SAB Topic 4.E)<br> -URI http://asc.fasb.org/extlink&amp;oid=27010918&amp;loc=d3e74512-122707<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(31))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockholdersEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockholdersEquityAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockholdersEquityAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UnbilledContractsReceivable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.3(c)(3))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 912<br> -SubTopic 310<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=68054760&amp;loc=d3e55302-109406<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UnbilledContractsReceivable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WeightedAverageCostInventoryAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of weighted average cost inventory present at the reporting date when inventory is valued using different valuation methods.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6361739&amp;loc=d3e7789-107766<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WeightedAverageCostInventoryAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_CommonStockEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Common Stock Equity</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_CommonStockEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_PublicUtilitiesPropertyPlantAndEquipmentGas">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Public Utilities Property Plant and Equipment related to Gas Operations.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_PublicUtilitiesPropertyPlantAndEquipmentGas</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>18
<FILENAME>R4.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6941679584">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares<br></strong></div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesAuthorized', window );">Common Stock Authorized</a></td>
<td class="nump">25,000,000<span></span>
</td>
<td class="nump">25,000,000<span></span>
</td>
<td class="nump">25,000,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesOutstanding', window );">Common Equity Outstanding</a></td>
<td class="nump">14,860,123<span></span>
</td>
<td class="nump">14,815,585<span></span>
</td>
<td class="nump">14,107,741<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockSharesAuthorized">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The maximum number of common shares permitted to be issued by an entity's charter and bylaws.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockSharesAuthorized</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockSharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=84159872&amp;loc=d3e21463-112644<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockSharesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>19
<FILENAME>R5.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6785539264">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)<br> $ in Millions</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract', window );"><strong>Operating Activities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net Income</a></td>
<td class="nump">$ 15.6<span></span>
</td>
<td class="nump">$ 12.4<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract', window );"><strong>Adjustments to Reconcile Net Income to Cash Provided by Operating Activities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization', window );">Depreciation and Amortization</a></td>
<td class="nump">12.3<span></span>
</td>
<td class="nump">12.5<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredIncomeTaxExpenseBenefit', window );">Deferred Tax Provision</a></td>
<td class="nump">4.7<span></span>
</td>
<td class="nump">7.9<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract', window );"><strong>Changes in Working Capital Items:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInAccountsReceivable', window );">Accounts Receivable</a></td>
<td class="num">(7.0)<span></span>
</td>
<td class="num">(4.7)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInUnbilledReceivables', window );">Accrued Revenue</a></td>
<td class="nump">8.2<span></span>
</td>
<td class="nump">8.2<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInReceivables', window );">Exchange Gas Receivable</a></td>
<td class="nump">5.6<span></span>
</td>
<td class="nump">6.2<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInRegulatoryLiabilities', window );">Regulatory Liabilities</a></td>
<td class="nump">1.7<span></span>
</td>
<td class="nump">2.4<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInAccountsPayable', window );">Accounts Payable</a></td>
<td class="num">(11.4)<span></span>
</td>
<td class="num">(4.3)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet', window );">Other Changes in Working Capital Items</a></td>
<td class="nump">3.6<span></span>
</td>
<td class="num">(1.2)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ChangeInDeferredRegulatoryAndOtherCharges', window );">Deferred Regulatory and Other Charges</a></td>
<td class="num">(7.9)<span></span>
</td>
<td class="num">(7.7)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet', window );">Other, net</a></td>
<td class="nump">3.0<span></span>
</td>
<td class="nump">5.8<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations', window );">Cash Provided by Operating Activities</a></td>
<td class="nump">28.4<span></span>
</td>
<td class="nump">37.5<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract', window );"><strong>Investing Activities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment', window );">Property, Plant and Equipment Additions</a></td>
<td class="num">(10.1)<span></span>
</td>
<td class="num">(17.5)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations', window );">Cash (Used in) Investing Activities</a></td>
<td class="num">(10.1)<span></span>
</td>
<td class="num">(17.5)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract', window );"><strong>Financing Activities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromRepaymentsOfShortTermDebt', window );">Proceeds from (Repayment of) Short-Term Debt, net</a></td>
<td class="nump">7.0<span></span>
</td>
<td class="num">(5.3)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RepaymentsOfLongTermDebt', window );">Repayment of Long-Term Debt</a></td>
<td class="num">(13.4)<span></span>
</td>
<td class="num">(0.2)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations', window );">Decrease in Capital Lease Obligations</a></td>
<td class="num">(0.8)<span></span>
</td>
<td class="num">(0.8)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_IncreaseDecreaseInGasInventoryFinancing', window );">Net Decrease in Exchange Gas Financing</a></td>
<td class="num">(5.4)<span></span>
</td>
<td class="num">(5.9)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsOfDividends', window );">Dividends Paid</a></td>
<td class="num">(5.4)<span></span>
</td>
<td class="num">(5.1)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfCommonStock', window );">Proceeds from Issuance of Common Stock</a></td>
<td class="nump">0.3<span></span>
</td>
<td class="nump">0.3<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations', window );">Cash (Used in) Financing Activities</a></td>
<td class="num">(17.7)<span></span>
</td>
<td class="num">(17.0)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease', window );">Net Increase in Cash and Cash Equivalents</a></td>
<td class="nump">0.6<span></span>
</td>
<td class="nump">3.0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAtCarryingValue', window );">Cash and Cash Equivalents at Beginning of Period</a></td>
<td class="nump">8.9<span></span>
</td>
<td class="nump">5.8<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAtCarryingValue', window );">Cash and Cash Equivalents at End of Period</a></td>
<td class="nump">9.5<span></span>
</td>
<td class="nump">8.8<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SupplementalCashFlowInformationAbstract', window );"><strong>Supplemental Cash Flow Information:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InterestPaidNet', window );">Interest Paid</a></td>
<td class="nump">3.6<span></span>
</td>
<td class="nump">4.0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeTaxesPaidNet', window );">Income Taxes Paid</a></td>
<td class="nump">0.2<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalLeaseObligationsIncurred', window );">Payments on Capital Leases</a></td>
<td class="nump">0.8<span></span>
</td>
<td class="nump">0.9<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_NoncashInvestingActivityAbstract', window );"><strong>Non-cash Investing Activity:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalExpendituresIncurredButNotYetPaid', window );">Capital Expenditures Included in Accounts Payable</a></td>
<td class="nump">$ 0.5<span></span>
</td>
<td class="nump">$ 0.6<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CapitalExpendituresIncurredButNotYetPaid">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Future cash outflow to pay for purchases of fixed assets that have occurred.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -URI http://asc.fasb.org/extlink&amp;oid=98513485&amp;loc=d3e4332-108586<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=98513485&amp;loc=d3e4313-108586<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=98513485&amp;loc=d3e4304-108586<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CapitalExpendituresIncurredButNotYetPaid</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CapitalLeaseObligationsIncurred">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase during the period in capital lease obligations due to entering into new capital leases.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=98513485&amp;loc=d3e4313-108586<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=98513485&amp;loc=d3e4304-108586<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CapitalLeaseObligationsIncurred</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsAtCarryingValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=82887183&amp;loc=d3e6676-107765<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3044-108585<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.1)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAndCashEquivalentsAtCarryingValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3521-108585<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 830<br> -SubTopic 230<br> -Section 45<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=98513438&amp;loc=d3e33268-110906<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredIncomeTaxExpenseBenefit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3602-108585<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32639-109319<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h))<br> -URI http://asc.fasb.org/extlink&amp;oid=26873400&amp;loc=d3e23780-122690<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.7)<br> -URI http://asc.fasb.org/extlink&amp;oid=34349781&amp;loc=d3e330036-122817<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredIncomeTaxExpenseBenefit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxesPaidNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=98513485&amp;loc=d3e4297-108586<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxesPaidNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInAccountsPayable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInAccountsPayable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInAccountsReceivable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInAccountsReceivable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInOperatingCapitalAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in current operating assets after deduction of current operating liabilities classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in operating assets after deduction of operating liabilities classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInReceivables">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInReceivables</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInRegulatoryLiabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in regulated liabilities. Regulated liabilities are created when regulatory agency permits an entity to defer revenues to the balance sheet.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInRegulatoryLiabilities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInUnbilledReceivables">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period of the amount of revenue for work performed for which billing has not occurred, net of uncollectible accounts.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInUnbilledReceivables</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InterestPaidNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash paid, after deduction of cash paid for capitalized interest, for interest. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=98513485&amp;loc=d3e4297-108586<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InterestPaidNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 26<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3574-108585<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3521-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 26<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3574-108585<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3521-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3521-108585<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3602-108585<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 25<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3536-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3602-108585<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 225<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(22))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879574&amp;loc=d3e536633-122882<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 225<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-04(18))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879464&amp;loc=d3e573970-122913<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03(20))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetIncomeLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsOfDividends">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 15<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3291-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PaymentsOfDividends</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 13<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3213-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PaymentsToAcquirePropertyPlantAndEquipment</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromIssuanceOfCommonStock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash inflow from the additional capital contribution to the entity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3255-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromIssuanceOfCommonStock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromRepaymentsOfShortTermDebt">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 9<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3098-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromRepaymentsOfShortTermDebt</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RepaymentsOfLongTermDebt">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 15<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3291-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RepaymentsOfLongTermDebt</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SupplementalCashFlowInformationAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SupplementalCashFlowInformationAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of operating expense for depreciation and amortization of regulated operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.2(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ChangeInDeferredRegulatoryAndOtherCharges">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The net change during the reporting period in deferred regulatory and other charges.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ChangeInDeferredRegulatoryAndOtherCharges</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_IncreaseDecreaseInGasInventoryFinancing">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The net change during the reporting period in exchange gas financing.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_IncreaseDecreaseInGasInventoryFinancing</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_NoncashInvestingActivityAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Noncash Investing Activity [Abstract]</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_NoncashInvestingActivityAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Proceeds from (Repayments of) Debt and Capital Lease Obligations</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ProceedsFromRepaymentsOfDebtAndCapitalLeaseObligations</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6938534544">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>CONSOLIDATED STATEMENTS OF CHANGES IN COMMON STOCK EQUITY - USD ($)<br> $ in Millions</strong></div></th>
<th class="th"><div>Total</div></th>
<th class="th"><div>Common Equity</div></th>
<th class="th"><div>Retained Earnings</div></th>
</tr>
<tr class="rc">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_CommonStockEquity', window );">Beginning Balance at Dec. 31, 2016</a></td>
<td class="nump">$ 292.9<span></span>
</td>
<td class="nump">$ 240.7<span></span>
</td>
<td class="nump">$ 52.2<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net Income</a></td>
<td class="nump">12.4<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">12.4<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsCommonStock', window );">Dividends on Common Shares</a></td>
<td class="num">(5.1)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(5.1)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation', window );">Stock Compensation Plans</a></td>
<td class="nump">1.1<span></span>
</td>
<td class="nump">1.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodValueNewIssues', window );">Issuance of Common Shares</a></td>
<td class="nump">0.3<span></span>
</td>
<td class="nump">0.3<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_CommonStockEquity', window );">Ending Balance at Mar. 31, 2017</a></td>
<td class="nump">301.6<span></span>
</td>
<td class="nump">242.1<span></span>
</td>
<td class="nump">59.5<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_CommonStockEquity', window );">Beginning Balance at Dec. 31, 2017</a></td>
<td class="nump">336.6<span></span>
</td>
<td class="nump">275.8<span></span>
</td>
<td class="nump">60.8<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net Income</a></td>
<td class="nump">15.6<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">15.6<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsCommonStock', window );">Dividends on Common Shares</a></td>
<td class="num">(5.4)<span></span>
</td>
<td class="nump">0.0<span></span>
</td>
<td class="num">(5.4)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation', window );">Stock Compensation Plans</a></td>
<td class="nump">1.3<span></span>
</td>
<td class="nump">1.3<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodValueNewIssues', window );">Issuance of Common Shares</a></td>
<td class="nump">0.3<span></span>
</td>
<td class="nump">0.3<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_CommonStockEquity', window );">Ending Balance at Mar. 31, 2018</a></td>
<td class="nump">$ 348.4<span></span>
</td>
<td class="nump">$ 277.4<span></span>
</td>
<td class="nump">$ 71.0<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendsCommonStock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=27012166&amp;loc=d3e187085-122770<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 405<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=6957935&amp;loc=d3e64057-112817<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DividendsCommonStock</td>
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<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3602-108585<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 225<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(22))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879574&amp;loc=d3e536633-122882<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 225<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-04(18))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879464&amp;loc=d3e573970-122913<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03(20))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Common Stock Equity</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6935759392">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>CONSOLIDATED STATEMENTS OF CHANGES IN COMMON STOCK EQUITY (Parenthetical) - shares<br></strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
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<tr>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
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<td class="nump">7,812<span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of new stock issued during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=84159872&amp;loc=d3e21463-112644<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=27012166&amp;loc=d3e187085-122770<br></p></div>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6776377856">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SignificantAccountingPoliciesTextBlock', window );">SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>NOTE 1 &#x2013; SUMMARY
 OF SIGNIFICANT ACCOUNTING POLICIES</b></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Nature of Operations</b>
 &#x2013; Unitil Corporation (Unitil or the Company) is a public
 utility holding company. Unitil and its subsidiaries are subject to
 regulation as a holding company system by the Federal Energy
 Regulatory Commission (FERC) under the Energy Policy Act of 2005.
 The following companies are wholly-owned subsidiaries of Unitil:
 Unitil Energy Systems, Inc. (Unitil Energy), Fitchburg Gas and
 Electric Light Company (Fitchburg), Northern Utilities, Inc.
 (Northern Utilities), Granite State Gas Transmission, Inc. (Granite
 State), Unitil Power Corp. (Unitil Power), Unitil Realty Corp.
 (Unitil Realty), Unitil Service Corp. (Unitil Service) and its
 <font style="WHITE-SPACE: nowrap">non-regulated</font> business
 unit Unitil Resources, Inc. (Unitil Resources). Usource Inc. and
 Usource L.L.C. are subsidiaries of Unitil Resources.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company&#x2019;s
 earnings are seasonal and are typically higher in the first and
 fourth quarters when customers use natural gas for heating
 purposes.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Unitil&#x2019;s principal
 business is the local distribution of electricity in the
 southeastern seacoast and state capital regions of New Hampshire
 and the greater Fitchburg area of north central Massachusetts, and
 the local distribution of natural gas in southeastern New
 Hampshire, portions of southern and central Maine and in the
 greater Fitchburg area of north central Massachusetts. Unitil has
 three distribution utility subsidiaries, Unitil Energy, which
 operates in New Hampshire, Fitchburg, which operates in
 Massachusetts and Northern Utilities, which operates in New
 Hampshire and Maine (collectively referred to as the distribution
 utilities).</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Granite State is a natural
 gas transportation pipeline, operating 86 miles of underground gas
 transmission pipeline primarily located in Maine and New Hampshire.
 Granite State provides Northern Utilities with interconnection to
 three major natural gas pipelines and access to domestic natural
 gas supplies in the south and Canadian natural gas supplies in the
 north. Granite State derives its revenues principally from the
 transportation services provided to Northern Utilities and, to a
 lesser extent, third-party marketers.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">A fifth utility subsidiary,
 Unitil Power, formerly functioned as the full requirements
 wholesale power supply provider for Unitil Energy. In connection
 with the implementation of electric industry restructuring in New
 Hampshire, Unitil Power ceased being the wholesale supplier of
 Unitil Energy on May&#xA0;1, 2003 and divested of its long-term
 power supply contracts through the sale of the entitlements to the
 electricity associated with various electric power supply contracts
 it had acquired to serve Unitil Energy&#x2019;s
 customers.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Unitil also has three other
 wholly-owned subsidiaries: Unitil Service; Unitil Realty; and
 Unitil Resources. Unitil Service provides, at cost, a variety of
 administrative and professional services, including regulatory,
 financial, accounting, human resources, engineering, operations,
 technology, energy management and management services on a
 centralized basis to its affiliated Unitil companies. Unitil Realty
 owns and manages the Company&#x2019;s corporate office in Hampton,
 New Hampshire and leases this facility to Unitil Service under a
 long-term lease arrangement. Unitil Resources is the
 Company&#x2019;s wholly-owned <font style="WHITE-SPACE: nowrap">non-regulated</font> subsidiary. Usource,
 Inc. and Usource L.L.C. (collectively, Usource) are wholly-owned
 subsidiaries of Unitil Resources. Usource provides brokering and
 advisory services to large commercial and industrial customers in
 the northeastern United States.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Basis of Presentation
 &#x2013;</b> The accompanying unaudited consolidated financial
 statements of Unitil have been prepared in accordance with the
 instructions to Form <font style="WHITE-SPACE: nowrap">10-Q</font>
 and include all of the information and footnotes required by
 generally accepted accounting principles. In the opinion of
 management, all adjustments considered necessary for a fair
 presentation have been included. The results of operations for the
 three months ended March&#xA0;31, 2018 are not necessarily
 indicative of results to be expected for the year ending
 December&#xA0;31, 2018. For further information, please refer to
 Note 1 of Part II to the Consolidated Financial Statements &#x2013;
 &#x201C;Summary of Significant Accounting Policies&#x201D; of the
 Company&#x2019;s Form <font style="WHITE-SPACE: nowrap">10-K</font>
 for the year ended December&#xA0;31, 2017, as filed with the
 Securities and Exchange Commission (SEC) on February&#xA0;1, 2018,
 for a description of the Company&#x2019;s Basis of
 Presentation.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Utility Revenue
 Recognition &#x2013;</b> Gas Operating Revenues and Electric
 Operating Revenues consist of billed and unbilled revenue and
 revenue from rate adjustment mechanisms. Billed and unbilled
 revenue includes delivery revenue and pass-through revenue,
 recognized according to tariffs approved by federal and state
 regulatory commissions which determine the amount of revenue the
 Company will record for these items. Revenue from rate adjustment
 mechanisms is accrued revenue, recognized in connection with rate
 adjustment mechanisms, and authorized by regulators for recognition
 in the current period for future cash recoveries from, or credits
 to, customers.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Billed and unbilled revenue
 is recorded when service is rendered or energy is delivered to
 customers. However, the determination of energy sales to individual
 customers is based on the reading of their meters, which occurs on
 a systematic basis throughout the month. At the end of each
 calendar month, amounts of energy delivered to customers since the
 date of the last meter reading are estimated and the corresponding
 unbilled revenues are calculated. These unbilled revenues are
 calculated each month based on estimated customer usage by class
 and applicable customer rates and are then reversed in the
 following month when billed to customers.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">In the first quarter of
 2018, the Company adopted Accounting Standards Update (ASU)
 <font style="WHITE-SPACE: nowrap">2014-09,</font> and its
 subsequent clarifications and amendments outlined in ASU
 <font style="WHITE-SPACE: nowrap">2015-14,</font> ASU <font style="WHITE-SPACE: nowrap">2016-08,</font> ASU <font style="WHITE-SPACE: nowrap">2016-10</font> and ASU <font style="WHITE-SPACE: nowrap">2017-13,</font> on a modified retrospective
 basis, which requires application to contracts with customers
 effective January&#xA0;1, 2018, with the cumulative impact on
 contracts not yet completed as of December&#xA0;31, 2017 recognized
 as an adjustment to the opening balance of Retained Earnings on the
 Company&#x2019;s Consolidated Balance Sheets. There was no
 cumulative effect of adoption to be recognized as an adjustment to
 the opening balance of Retained Earnings on the Company&#x2019;s
 Consolidated Balance Sheets. The adoption of this guidance did not
 have a material impact on the Consolidated Financial Statements as
 of the adoption date or for the three months ended March&#xA0;31,
 2018. A majority of the Company&#x2019;s revenue from contracts with
 customers continues to be recognized on a monthly basis based on
 applicable tariffs and customer monthly consumption. Such revenue
 is recognized using the invoice practical expedient which allows an
 entity to recognize revenue in the amount that directly corresponds
 to the value transferred to the customer.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">As discussed below, the
 Company plans to disclose billed and unbilled revenue separately
 from rate adjustment mechanism revenue in the Notes to the
 Consolidated Financial Statements for periods in 2018 going
 forward, and will also provide this disclosure for prior periods
 for informational purposes.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company&#x2019;s billed
 and unbilled revenue meets the definition of &#x201C;revenues from
 contracts with customers&#x201D; as defined in ASU <font style="WHITE-SPACE: nowrap">2014-09.</font> Revenue recognized in
 connection with rate adjustment mechanisms is consistent with the
 definition of alternative revenue programs in Accounting Standards
 Codification (ASC) <font style="WHITE-SPACE: nowrap"><font style="WHITE-SPACE: nowrap"><font style="WHITE-SPACE: nowrap">980-605-25-3,</font></font></font> as the
 Company has the ability to adjust rates in the future as a result
 of past activities or completed events. ASU <font style="WHITE-SPACE: nowrap">2014-09</font> requires the Company to
 disclose separately the amount of revenues from contracts with
 customers and alternative revenue program revenues.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">In the following tables,
 revenue is classified by the types of goods/services rendered and
 market/customer type. The lower revenues reported in the first
 quarter of 2018 to account for the reduction in the corporate
 income tax rate under the Tax Cuts and Jobs Act of 2017 (TCJA) are
 shown separately in the table below for informational
 purposes.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="78%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended&#xA0;March&#xA0;31,&#xA0;2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 171pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas and
 Electric Operating Revenues ($ millions):</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Electric</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Billed and Unbilled
 Revenue:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Residential</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">35.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">34.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">70.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">C&amp;I</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">50.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">24.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">74.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Revenue Reductions &#x2013;
 TCJA</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(1.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(0.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(2.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 7em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Billed and Unbilled
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">91.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">61.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">153.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Rate Adjustment Mechanism
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(4.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(4.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(8.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Gas and Electric
 Operating Revenues</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>87.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>57.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>144.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="FONT-SIZE: 1pt">
 <td height="16"></td>
 <td height="16" colspan="12"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended&#xA0;March&#xA0;31,&#xA0;2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 171pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas and
 Electric Operating Revenues ($ millions):</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Electric</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Billed and Unbilled
 Revenue:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Residential</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">30.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">27.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">58.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">C&amp;I</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">42.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">19.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">61.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 7em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Billed and Unbilled
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">78.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">49.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">127.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Rate Adjustment Mechanism
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(4.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(3.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Gas and Electric
 Operating Revenues</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>74.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>49.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>124.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Fitchburg is subject to
 revenue decoupling. Revenue decoupling is the term given to the
 elimination of the dependency of a utility&#x2019;s distribution
 revenue on the volume of electricity or natural gas sales. The
 difference between distribution revenue amounts billed to customers
 and the targeted revenue decoupling amounts is recorded as an
 increase or a decrease in Accrued Revenue, which forms the basis
 for resetting rates for future cash recoveries from, or credits to,
 customers. These revenue decoupling targets may be adjusted as a
 result of rate cases that the Company files with the MDPU. The
 Company estimates that revenue decoupling applies to approximately
 27% and 11% of Unitil&#x2019;s total annual electric and natural gas
 sales volumes, respectively.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Other Operating Revenue
 &#x2013; <font style="WHITE-SPACE: nowrap">Non-regulated</font>
 &#x2013;</b> Usource, Unitil&#x2019;s <font style="WHITE-SPACE: nowrap">non-regulated</font> subsidiary, conducts its
 business activities as a broker of competitive energy services.
 Usource does not take title to the electric and gas commodities
 which are the subject of the brokerage contracts. The Company
 records energy brokering revenues based upon the amount of
 electricity and gas delivered to customers through the end of the
 accounting period. Usource partners with certain entities to
 facilitate these brokerage services and pays these entities a fee
 under revenue sharing agreements.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">As discussed above, the
 Company adopted ASU <font style="WHITE-SPACE: nowrap">2014-09</font> in the first quarter of 2018.
 There was no cumulative effect of adoption to be recognized as an
 adjustment to the opening balance of Retained Earnings on the
 Company&#x2019;s Consolidated Balance Sheets. ASU <font style="WHITE-SPACE: nowrap">2014-09</font> requires that payments made by
 Usource to third parties (&#x201C;Channel Partners&#x201D;) for
 revenue sharing agreements are recognized net, as a reduction from
 revenue, where those payments were previously recognized gross as
 an operating expense. Therefore, beginning with the three months
 ended March&#xA0;31, 2018 and going forward, payments made by
 Usource to Channel Partners for revenue sharing agreements are
 reported as &#x201C;Other&#x201D; in the &#x201C;Operating
 Revenues&#x201D; section of the Consolidated Statements of Earnings,
 along with Usource&#x2019;s revenues. Prior to the adoption of ASU
 <font style="WHITE-SPACE: nowrap">2014-09,</font> payments by
 Usource to third parties for revenue sharing agreements are
 included as &#x201C;Operation and Maintenance&#x201D; in the
 &#x201C;Operating Expenses&#x201D; section of the Consolidated
 Statements of Earnings. Those Channel Partner payments were
 $0.3&#xA0;million each of the first quarters of 2018 and
 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">If ASU <font style="WHITE-SPACE: nowrap">2014-09</font> had been adopted retroactively
 for the three months ended March&#xA0;31, 2017, the result would
 have been corresponding reductions of $0.3&#xA0;million in both
 &#x201C;Other&#x201D; in in the &#x201C;Operating Revenues&#x201D;
 section of the Consolidated Statements of Earnings and
 &#x201C;Operation and Maintenance&#x201D; in the &#x201C;Operating
 Expenses&#x201D; section of the Company&#x2019;s Consolidated
 Statements of Earnings as shown in the tables below.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="72%"></td>
 <td valign="bottom" width="11%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="11%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended&#xA0;March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>As
 Reported</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" nowrap="nowrap" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>If ASU <font style="WHITE-SPACE: nowrap">2014-09</font><br />
 Had Been in</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Effect</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 134pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Other
 Operating Revenues ($ millions):</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Usource Contract
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Revenue Sharing
 Payments</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Other Operating
 Revenues</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="FONT-SIZE: 1pt">
 <td height="16"></td>
 <td height="16" colspan="8"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended&#xA0;March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>As
 Reported</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>If ASU <font style="WHITE-SPACE: nowrap">2014-09</font><br />
 Had Been in</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Effect</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 169pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Operation
 and Maintenance Expense ($ millions):</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Operation and Maintenance
 Expense</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>17.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Retirement Benefit Costs
 &#x2013;</b> The Company sponsors the Unitil Corporation Retirement
 Plan (Pension Plan), the Unitil Employee Health and Welfare
 Benefits Plan (PBOP Plan) and the Unitil Corporation Supplemental
 Executive Retirement Plan (SERP).The net periodic benefit costs
 associated with these benefit plans consist of service cost and
 other components (See Note 9 to the Consolidated Financial
 Statements). In the first quarter of 2018, the Company adopted ASU
 <font style="WHITE-SPACE: nowrap">No.&#xA0;2017-07,</font>
 &#x201C;Compensation &#x2013; Retirement Benefits (Topic 715) which
 amends the existing guidance relating to the presentation of net
 periodic pension cost and net periodic other post-retirement
 benefit costs. On a retrospective basis, the amendment requires an
 employer to separate the service cost component from the other
 components of net benefit cost and provides explicit guidance on
 how to present the service cost component and other components in
 the income statement.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">Accordingly, for all
 periods presented in the Consolidated Financial Statements in this
 Form <font style="WHITE-SPACE: nowrap">10-Q</font> for the quarter
 ended March&#xA0;31, 2018, the service cost component of the
 Company&#x2019;s net periodic benefit costs is reported in
 &#x201C;Operations and Maintenance&#x201D; in the &#x201C;Operating
 Expenses&#x201D; section of the Consolidated Statements of Earnings
 while the other components of net periodic benefit costs are
 reported in the &#x201C;Other Expense (Income), net&#x201D; section
 of the Consolidated Statements of Earnings. Prior to adoption, the
 Company reported all components of its net periodic benefit costs
 in &#x201C;Operations and Maintenance&#x201D; in the &#x201C;Operating
 Expenses&#x201D; section of the Consolidated Statements of Earnings.
 The change in presentation for the quarter ended March&#xA0;31,
 2018 resulted in a reduction of &#x201C;Operations and
 Maintenance&#x201D; and an increase in &#x201C;Other Expense
 (Income), net&#x201D; on the Consolidated Statements of Earnings for
 the prior period. There are $1.5&#xA0;million and $1.6&#xA0;million
 of <font style="WHITE-SPACE: nowrap">non-service</font> cost net
 periodic benefit costs reported in &#x201C;Other Expense (Income),
 net for the three months ended March&#xA0;31, 2018 and
 March&#xA0;31, 2017, respectively, net of amounts deferred as
 regulatory assets for future recovery.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Income Taxes &#x2013;</b>
 The Company is subject to Federal and State income taxes as well as
 various other business taxes. This process involves estimating the
 Company&#x2019;s current tax liabilities as well as assessing
 temporary and permanent differences resulting from the timing of
 the deductions of expenses and recognition of taxable income for
 tax and book accounting purposes. These temporary differences
 result in deferred tax assets and liabilities, which are included
 in the Company&#x2019;s Consolidated Balance Sheets. The Company
 accounts for income tax assets, liabilities and expenses in
 accordance with the FASB Codification guidance on Income Taxes. The
 Company classifies penalty and interest expense related to income
 tax liabilities as income tax expense and interest expense,
 respectively, in the Consolidated Statements of
 Earnings.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Provisions for income taxes
 are calculated in each of the jurisdictions in which the Company
 operates for each period for which a statement of earnings is
 presented. The Company accounts for income taxes in accordance with
 the FASB Codification guidance on Income Taxes, which requires an
 asset and liability approach for the financial accounting and
 reporting of income taxes. Significant judgments and estimates are
 required in determining the current and deferred tax assets and
 liabilities. The Company&#x2019;s current and deferred tax assets
 and liabilities reflect its best assessment of estimated future
 taxes to be paid. In accordance with the FASB Codification, the
 Company periodically assesses the realization of its deferred tax
 assets and liabilities and adjusts the income tax provision, the
 current tax liability and deferred taxes in the period in which the
 facts and circumstances which gave rise to the revision become
 known.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Cash and Cash
 Equivalents &#x2013;</b> Cash and Cash Equivalents includes all cash
 and cash equivalents to which the Company has legal title. Cash
 equivalents include short-term investments with original maturities
 of three months or less and interest bearing deposits. The
 Company&#x2019;s cash and cash equivalents are held at financial
 institutions and at times may exceed federally insured limits. The
 Company has not experienced any losses in such accounts. Under the
 Independent System Operator&#x2014;New England <font style="WHITE-SPACE: nowrap">(ISO-NE)</font> Financial Assurance Policy
 (Policy), Unitil&#x2019;s subsidiaries Unitil Energy, Fitchburg and
 Unitil Power are required to provide assurance of their ability to
 satisfy their obligations to <font style="WHITE-SPACE: nowrap">ISO-NE.</font> Under this Policy,
 Unitil&#x2019;s subsidiaries provide cash deposits covering
 approximately <font style="WHITE-SPACE: nowrap">2-1/2</font> months
 of outstanding obligations, less credit amounts that are based on
 the Company&#x2019;s credit rating. As of March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017, the Unitil
 subsidiaries had deposited $3.3&#xA0;million, $2.6&#xA0;million and
 $2.9&#xA0;million, respectively to satisfy their <font style="WHITE-SPACE: nowrap">ISO-NE</font> obligations. In addition,
 Northern Utilities has cash margin deposits to satisfy requirements
 for its natural gas hedging program. There were no cash margin
 deposits at Northern Utilities as of March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Allowance for Doubtful
 Accounts &#x2013;</b> The Company recognizes a provision for
 doubtful accounts each month based upon the Company&#x2019;s
 experience in collecting electric and gas utility service accounts
 receivable in prior years. At the end of each month, an analysis of
 the delinquent receivables is performed which takes into account an
 assumption about the cash recovery of delinquent receivables. The
 analysis also calculates the amount of <font style="WHITE-SPACE: nowrap">written-off</font> receivables that are
 recoverable through regulatory rate reconciling mechanisms. The
 Company&#x2019;s distribution utilities are authorized by regulators
 to recover the costs of their energy commodity portion of bad debts
 through rate mechanisms. Also, the electric and gas divisions of
 Fitchburg are authorized to recover through rates past due amounts
 associated with hardship accounts that are protected from
 <font style="WHITE-SPACE: nowrap">shut-off.</font> Evaluating the
 adequacy of the Allowance for Doubtful Accounts requires judgment
 about the assumptions used in the analysis. It has been the
 Company&#x2019;s experience that the assumptions it has used in
 evaluating the adequacy of the Allowance for Doubtful Accounts have
 proven to be reasonably accurate.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Allowance for Doubtful
 Accounts as of March&#xA0;31, 2018, March&#xA0;31, 2017 and
 December&#xA0;31, 2017, which are included in Accounts Receivable,
 net on the accompanying unaudited consolidated balance sheets, was
 as follows:</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="82%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>($
 millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="10"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Allowance for Doubtful
 Accounts</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Accrued Revenue</b>
 &#x2013; Accrued Revenue includes the current portion of Regulatory
 Assets and unbilled revenues. The following table shows the
 components of Accrued Revenue as of March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="82%"></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 100pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Accrued
 Revenue ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Regulatory Assets &#x2013;
 Current</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>34.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">32.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">39.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Unbilled
 Revenues</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">13.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Accrued
 Revenue</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>45.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">41.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">53.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Exchange Gas
 Receivable</b> &#x2013; Northern Utilities and Fitchburg have gas
 exchange and storage agreements whereby natural gas purchases
 during the months of April through October are delivered to a third
 party. The third party delivers natural gas back to the Company
 during the months of November through March. The exchange and
 storage gas volumes are recorded at weighted average cost. The
 following table shows the components of Exchange Gas Receivable as
 of March&#xA0;31, 2018, March&#xA0;31, 2017 and December&#xA0;31,
 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="81%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 127pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Exchange Gas
 Receivable ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Northern
 Utilities</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Fitchburg</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Exchange Gas
 Receivable</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Gas Inventory</b>
 &#x2013; The Company uses the weighted average cost methodology to
 value natural gas inventory. The following table shows the
 components of Gas Inventory as of March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="80%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 89pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas
 Inventory ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Natural Gas</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Propane</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Liquefied Natural
 Gas&#xA0;&amp; Other</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Gas
 Inventory</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Utility Plant
 &#x2013;</b> The cost of additions to Utility Plant and the cost of
 renewals and betterments are capitalized. Cost consists of labor,
 materials, services and certain indirect construction costs,
 including an allowance for funds used during construction (AFUDC).
 The costs of current repairs and minor replacements are charged to
 appropriate operating expense accounts. The original cost of
 utility plant retired or otherwise disposed of is charged to the
 accumulated provision for depreciation. The Company includes in its
 mass asset depreciation rates, which are periodically reviewed as
 part of its ratemaking proceedings, cost of removal amounts to
 provide for future negative salvage value. At March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017, the Company
 estimates that the cost of removal amounts, which are recorded on
 the Consolidated Balance Sheets in Cost of Removal Obligations are
 $86.6&#xA0;million, $79.7&#xA0;million, and $84.3&#xA0;million,
 respectively.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Regulatory Accounting
 &#x2013;</b> The Company&#x2019;s principal business is the
 distribution of electricity and natural gas by the three
 distribution utilities: Unitil Energy, Fitchburg and Northern
 Utilities. Unitil Energy and Fitchburg are subject to regulation by
 the FERC. Fitchburg is also regulated by the Massachusetts
 Department of Public Utilities (MDPU), Unitil Energy is regulated
 by the New Hampshire Public Utilities Commission (NHPUC) and
 Northern Utilities is regulated by the Maine Public Utilities
 Commission (MPUC) and NHPUC. Granite State, the Company&#x2019;s
 natural gas transmission pipeline, is regulated by the FERC.
 Accordingly, the Company uses the Regulated Operations guidance as
 set forth in the FASB Codification. The Company has recorded
 Regulatory Assets and Regulatory Liabilities which will be
 recovered from customers, or applied for customer benefit, in
 accordance with rate provisions approved by the applicable public
 utility regulatory commission.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="79%"></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 181pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Regulatory
 Assets consist of the following ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Retirement
 Benefits</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>85.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">75.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">84.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Energy Supply&#xA0;&amp;
 Other Rate Adjustment Mechanisms</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>31.9</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">27.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">36.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Deferred Storm
 Charges</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>8.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">8.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Environmental</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>9.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income Taxes</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>6.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>5.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Regulatory
 Assets</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>145.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">135.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">149.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Current Portion of
 Regulatory Assets</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="VERTICAL-ALIGN: baseline; POSITION: relative; BOTTOM: 0.8ex">(1)</sup></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>34.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">32.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">39.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Regulatory Assets
 &#x2013; noncurrent</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>111.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">103.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">109.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 6px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" border="0">
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="VERTICAL-ALIGN: baseline; POSITION: relative; BOTTOM: 0.8ex">(1)</sup></font></b></font></td>
 <td valign="top" align="left">
 <p align="left"><font style="FONT-FAMILY: Times New Roman" size="2">Reflects amounts included in Accrued Revenue, discussed above,
 on the Company&#x2019;s Consolidated Balance Sheets.</font></p>
 </td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="80%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 194pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Regulatory
 Liabilities consist of the following ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Rate Adjustment
 Mechanisms</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Gas Pipeline Refund (Note
 6)</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income Taxes (Note
 8)</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>49.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">48.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Regulatory
 Liabilities</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>60.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">13.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">58.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Current Portion of
 Regulatory Liabilities</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.9</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">12.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Regulatory Liabilities
 &#x2013; noncurrent</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>49.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">48.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Generally, the Company
 receives a return on investment on its regulated assets for which a
 cash outflow has been made. Included in Regulatory Assets as of
 March&#xA0;31, 2018 are $0.5&#xA0;million of deferred storm charges
 to be recovered over the year and $6.5&#xA0;million of
 environmental costs, rate case costs and other expenditures to be
 recovered over varying periods in the next seven years. Regulators
 have authorized recovery of these expenditures, but without a
 return. Regulatory commissions can reach different conclusions
 about the recovery of costs, which can have a material impact on
 the Company&#x2019;s Consolidated Financial Statements. The Company
 believes it is probable that its regulated distribution and
 transmission utilities will recover their investments in long-lived
 assets, including regulatory assets. If the Company, or a portion
 of its assets or operations, were to cease meeting the criteria for
 application of these accounting rules, accounting standards for
 businesses in general would become applicable and immediate
 recognition of any previously deferred costs, or a portion of
 deferred costs, would be required in the year in which the criteria
 are no longer met, if such deferred costs were not recoverable in
 the portion of the business that continues to meet the criteria for
 application of the FASB Codification topic on Regulated Operations.
 If unable to continue to apply the FASB Codification provisions for
 Regulated Operations, the Company would be required to apply the
 provisions for the Discontinuation of Rate-Regulated Accounting
 included in the FASB Codification. In the Company&#x2019;s opinion,
 its regulated operations will be subject to the FASB Codification
 provisions for Regulated Operations for the foreseeable
 future.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Derivatives &#x2013;</b>
 The Company&#x2019;s regulated energy subsidiaries enter into energy
 supply contracts to serve their electric and gas customers. The
 Company follows a procedure for determining whether each contract
 qualifies as a derivative instrument under the guidance provided by
 the FASB Codification on Derivatives and Hedging. For each
 contract, the Company reviews and documents the key terms of the
 contract. Based on those terms and any additional relevant
 components of the contract, the Company determines and documents
 whether the contract qualifies as a derivative instrument as
 defined in the FASB Codification. The Company has determined that
 none of its energy supply contracts, other than the regulatory
 approved hedging program, described below, qualifies as a
 derivative instrument under the guidance set forth in the FASB
 Codification.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company has managed a
 regulatory approved hedging program for Northern Utilities, which
 is designed to fix or cap a portion of its gas supply costs for the
 coming years of service through the purchase of European call
 option contracts. Any gains or losses resulting from these option
 contracts are passed through to customers directly through Northern
 Utilities&#x2019; Cost of Gas Adjustment Clause. The fair value of
 these derivatives is determined using Level&#xA0;2 inputs
 (valuations based on quoted prices in markets that are not active
 or for which all significant inputs are observable, either directly
 or indirectly), specifically based on the NYMEX closing prices for
 outstanding contracts as of the balance sheet date. As a result of
 the ratemaking process, the Company records gains and losses
 resulting from the change in fair value of the derivatives as
 regulatory liabilities or assets, then reclassifies these gains or
 losses into Cost of Gas Sales when the gains and losses are passed
 through to customers through the Cost of Gas Adjustment Clause.
 Currently, there are no active transactions and the Company has
 proposed to regulators to discontinue the program. This matter
 remains pending.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">As of March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017 the Company had
 zero, 1.2&#xA0;billion and 0.6&#xA0;billion cubic feet (BCF),
 respectively, outstanding in natural gas futures and options
 contracts under its hedging program.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">As of March&#xA0;31, 2018
 and March&#xA0;31, 2017 and December&#xA0;31, 2017, the
 Company&#x2019;s derivatives that are not designated as hedging
 instruments under FASB ASC <font style="WHITE-SPACE: nowrap">815-20</font> have a fair value of $0,
 $0.3&#xA0;million and less than $0.1&#xA0;million,
 respectively.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Investments in
 Marketable Securities</b> &#x2013; The Company has a trust through
 which it invests in a variety of equity and fixed income mutual
 funds. These funds are intended to satisfy obligations under the
 Company&#x2019;s Supplemental Executive Retirement Plan
 (&#x201C;SERP&#x201D;) (See further discussion of the SERP in Note
 9.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">At March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017, the fair value of
 the Company&#x2019;s investments in these trading securities, which
 are recorded on the Consolidated Balance Sheets in Other Assets,
 were $5.1&#xA0;million, $3.3 and $3.6&#xA0;million, respectively,
 as shown in the table below. These investments are valued based on
 quoted prices from active markets and are categorized in
 Level&#xA0;1 as they are actively traded and no valuation
 adjustments have been applied. Changes in the fair value of these
 investments are recorded in Other Expense, net.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="82%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 162pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Fair Value
 of Marketable Securities ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Equity Funds</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.9</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Fixed Income
 Funds</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Cash and
 Equivalents</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Marketable
 Securities</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>5.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Energy Supply
 Obligations &#x2013;</b> The following discussion and table
 summarize the nature and amounts of the items recorded as Energy
 Supply Obligations (current portion) and Other Noncurrent
 Liabilities (noncurrent portion) on the Company&#x2019;s
 Consolidated Balance Sheets.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="80%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 132pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Energy
 Supply Obligations ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Current:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Exchange Gas
 Obligation</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Renewable Energy Portfolio
 Standards</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Power Supply Contract
 Divestitures</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Energy Supply
 Obligations &#x2013; Current</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Long-Term:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Power Supply Contract
 Divestitures</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Energy Supply
 Obligations</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>8.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
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 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">Exchange Gas Obligation
 &#x2013; As discussed above, Northern Utilities enters into gas
 exchange agreements under which Northern Utilities releases certain
 natural gas pipeline and storage assets, resells the natural gas
 storage inventory to an asset manager and subsequently repurchases
 the inventory over the course of the natural gas heating season at
 the same price at which it sold the natural gas inventory to the
 asset manager. The gas inventory related to these agreements is
 recorded in Exchange Gas Receivable on the Company&#x2019;s
 Consolidated Balance Sheets while the corresponding obligations are
 recorded in Energy Supply Obligations.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Renewable Energy Portfolio
 Standards &#x2013; Renewable Energy Portfolio Standards (RPS)
 require retail electricity suppliers, including public utilities,
 to demonstrate that required percentages of their sales are met
 with power generated from certain types of resources or
 technologies. Compliance is demonstrated by purchasing and retiring
 Renewable Energy Certificates (REC) generated by facilities
 approved by the state as qualifying for REC treatment. Unitil
 Energy and Fitchburg purchase RECs in compliance with RPS
 legislation in New Hampshire and Massachusetts for supply provided
 to default service customers. RPS compliance costs are a supply
 cost that is recovered in customer default service rates. Unitil
 Energy and Fitchburg collect RPS compliance costs from customers
 throughout the year and demonstrate compliance for each calendar
 year on the following July 1. Due to timing differences between
 collection of revenue from customers and payment of REC costs to
 suppliers, Unitil Energy and Fitchburg typically maintain accrued
 revenue for RPS compliance which is recorded in Accrued Revenue
 with a corresponding liability in Energy Supply Obligations on the
 Company&#x2019;s Consolidated Balance Sheets.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Fitchburg has entered into
 long-term renewable contracts for electric energy and/or renewable
 energy credits pursuant to Massachusetts legislation, specifically,
 the Act Relative to Green Communities of 2008 and the Act Relative
 to Competitively Priced Electricity (2012)&#xA0;in the
 Commonwealth, and the MDPU&#x2019;s regulations implementing the
 legislation. The generating facilities associated with three of
 these contracts have been constructed and are operating. A recent
 round of long-term renewable energy procurements was conducted
 during 2016 and several contracts were finalized and submitted to
 MDPU for approval in 2017. These approvals remain pending.
 Additional procurements are expected in compliance with the Act to
 Promote Energy Diversity (2016). Fitchburg recovers the costs
 associated with long-term renewable contracts on a fully
 reconciling basis through a MDPU-approved cost recovery
 mechanism.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Power Supply Contract
 Divestitures &#x2013; Unitil Energy&#x2019;s and Fitchburg&#x2019;s
 customers are entitled to purchase their electric or natural gas
 supplies from third-party suppliers. In connection with the
 implementation of retail choice, Unitil Power, which formerly
 functioned as the wholesale power supply provider for Unitil
 Energy, and Fitchburg divested their long-term power supply
 contracts through the sale of the entitlements to the electricity
 sold under those contracts. Unitil Energy and Fitchburg recover in
 their rates all the costs associated with the divestiture of their
 power supply portfolios and have secured regulatory approval from
 the NHPUC and MDPU, respectively, for the recovery of power
 supply-related stranded costs. The obligations related to these
 divestitures are recorded in Energy Supply Obligations (current
 portion) and Other Noncurrent Liabilities (noncurrent portion) on
 the Company&#x2019;s Consolidated Balance Sheets with corresponding
 regulatory assets recorded in Accrued Revenue (current portion) and
 Regulatory Assets (noncurrent portion).</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Recently Issued
 Pronouncements</b> &#x2013; In March 2017, the FASB issued ASU
 <font style="WHITE-SPACE: nowrap">No.&#xA0;2017-07,</font>
 &#x201C;Compensation &#x2013; Retirement Benefits (Topic 715) which
 amends the existing guidance relating to the presentation of net
 periodic pension cost and net periodic other post-retirement
 benefit costs. On a retrospective basis, the amendment requires an
 employer to separate the service cost component from the other
 components of net benefit cost and provides explicit guidance on
 how to present the service cost component and other components in
 the income statement. In addition, on a prospective basis, the ASU
 limits the component of net benefit cost eligible to be capitalized
 to service costs. The ASU became effective for the Company on
 January&#xA0;1, 2018. The change in capitalization of retirement
 benefits did not have a material impact on the Company&#x2019;s
 Consolidated Financial Statements.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 6px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">In May 2014, the FASB
 issued ASU <font style="WHITE-SPACE: nowrap">No.&#xA0;2014-09,</font> &#x201C;Revenue from
 Contracts with Customers (Topic 606)&#x201D;, which amends existing
 revenue recognition guidance, effective January&#xA0;1, 2018. The
 objective of the new standard is to provide a single, comprehensive
 revenue recognition model for all contracts with customers to
 improve comparability across entities, industries, jurisdictions,
 and capital markets and to provide more useful information to users
 of financial statements through improved and expanded disclosure
 requirements.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The majority of the
 Company&#x2019;s revenue, including energy provided to customers, is
 from tariff offerings that provide natural gas or electricity
 without a defined contractual term. For such arrangements, the
 Company generally expects that the revenue from contracts with
 these customers will continue to be equivalent to the electricity
 or natural gas supplied and billed in that period (including
 unbilled revenues) and the adoption of the new guidance will not
 result in a significant shift in the timing of revenue recognition
 for such sales.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company used the
 modified retrospective method when adopting the new standard on
 January&#xA0;1, 2018. The new guidance did not have a material
 impact to the Consolidated Financial Statements. (See
 &#x201C;Utility Revenue Recognition&#x201D; and &#x201C;Other
 Operating Revenue &#x2013; <font style="WHITE-SPACE: nowrap">Non-regulated&#x201D;</font>
 above.)</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">In February 2016, the FASB
 issued ASU <font style="WHITE-SPACE: nowrap">2016-02,</font>
 Leases, Topic 842, which amends the existing guidance relating to
 the definition of a lease, recognition of lease assets and lease
 liabilities on the balance sheet, and the disclosure of key
 information about leasing arrangements.&#xA0;In November 2017, the
 FASB tentatively decided to amend the new leasing guidance such
 that entities may elect not to restate their comparative periods in
 the period of adoption. Under the new standard, all lessees must
 recognize an asset and liability on the balance sheet. Operating
 leases were previously not recognized on the balance
 sheet.&#xA0;The ASU will be effective for the Company on
 January&#xA0;1, 2019, with early adoption permitted. The Company
 plans to adopt this guidance in the first quarter of 2019.&#xA0;The
 Company expects this ASU to increase lease assets and lease
 liabilities on the Consolidated Balance Sheets and does not expect
 the guidance will have a material impact on the Consolidated
 Statements of Income, Statements of Cash Flows and lease
 disclosures.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">In January 2016, the FASB
 issued Accounting Standards Update (ASU) <font style="WHITE-SPACE: nowrap">2016-01</font> which addresses certain
 aspects of recognition, measurement, presentation and disclosure of
 financial instruments. A financial instrument is defined as cash,
 evidence of ownership interest in a company or other entity, or a
 contract that both: (i)&#xA0;imposes on one entity a contractual
 obligation either to deliver cash or another financial instrument
 to a second entity or to exchange other financial instruments on
 potentially unfavorable terms with the second entity and
 (ii)&#xA0;conveys to that second entity a contractual right either
 to receive cash or another financial instruments from the first
 entity or to exchange other financial instruments on potentially
 favorable terms with the first entity. The ASU became effective for
 the Company on January&#xA0;1, 2018 and it did not have a material
 impact on the Company&#x2019;s Consolidated Financial
 Statements.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Other than the
 pronouncements discussed above, there are no recently issued
 pronouncements that the Company has not already adopted or that
 have a material impact on the Company.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Subsequent Events</b>
 &#x2013; The Company evaluates all events or transactions through
 the date of the related filing. During the period through the date
 of this filing, the Company did not have any material subsequent
 events that would result in adjustment to or disclosure in its
 Consolidated Financial Statements.</font></p>
 </div><span></span>
</td>
</tr>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6939683952">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>DIVIDENDS DECLARED PER SHARE<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
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 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>NOTE 2 &#x2013; DIVIDENDS
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 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
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 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Date</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Paid
 (Payable)</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Shareholder&#xA0;of</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Record&#xA0;Date</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Dividend</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Amount</b></font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top" align="center">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center">
 <font style="FONT-FAMILY: Times New Roman" size="2">04/25/18</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">05/29/18</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">05/15/18</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">$0.365</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top" align="center">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center">
 <font style="FONT-FAMILY: Times New Roman" size="2">01/30/18</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">02/28/18</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">02/14/18</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">$0.365</font></td>
 </tr>
 <tr style="FONT-SIZE: 1pt">
 <td height="8"></td>
 <td height="8" colspan="2"></td>
 <td height="8" colspan="2"></td>
 <td height="8" colspan="2"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top" align="center">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center">
 <font style="FONT-FAMILY: Times New Roman" size="2">10/25/17</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">11/29/17</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">11/15/17</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">$0.360</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top" align="center">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center">
 <font style="FONT-FAMILY: Times New Roman" size="2">07/26/17</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">08/29/17</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">08/15/17</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">$0.360</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top" align="center">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center">
 <font style="FONT-FAMILY: Times New Roman" size="2">04/26/17</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">05/30/17</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">05/16/17</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">$0.360</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top" align="center">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em" align="center">
 <font style="FONT-FAMILY: Times New Roman" size="2">01/25/17</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">02/28/17</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">02/14/17</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" align="center"><font style="FONT-FAMILY: Times New Roman" size="2">$0.360</font></td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
</table>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of Dividends Declared and Paid.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6785110592">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>SEGMENT INFORMATION<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingDisclosureTextBlock', window );">SEGMENT INFORMATION</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>NOTE 3 &#x2013; SEGMENT
 INFORMATION</b></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2">The following table
 provides significant segment financial data for the three months
 ended March&#xA0;31, 2018 and March&#xA0;31, 2017:</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="71%"></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">&#xA0;<font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Electric</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Non-</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Regulated</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Other</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1pt">
 <td height="8"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 168pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Three Months
 Ended March&#xA0;31, 2018 ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Revenues:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Billed and Unbilled
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>91.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>61.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>153.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
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 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(4.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(4.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(8.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other Operating Revenue
 &#x2013; <font style="WHITE-SPACE: nowrap">Non-Regulated</font></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 2em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Operating
 Revenues</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>87.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>57.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>145.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Segment Profit
 (Loss)</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>12.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>3.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(0.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>15.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Identifiable Segment
 Assets</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>712.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>481.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>42.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,244.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Capital
 Expenditures</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>3.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>6.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="FONT-SIZE: 1pt">
 <td height="8"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 168pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Three Months
 Ended March&#xA0;31, 2017 ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Revenues</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">74.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">49.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">126.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Segment Profit</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">12.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Identifiable Segment
 Assets</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">641.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">442.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">42.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,134.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Capital
 Expenditures</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">8.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">17.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1pt">
 <td height="8"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 124pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>As of
 December&#xA0;31, 2017 ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Identifiable Segment
 Assets</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">714.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">476.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">44.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,241.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -URI http://asc.fasb.org/topic&amp;trid=2134510<br></p></div>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6597361360">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>DEBT AND FINANCING ARRANGEMENTS<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtDisclosureTextBlock', window );">DEBT AND FINANCING ARRANGEMENTS</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>NOTE 4 &#x2013; DEBT AND
 FINANCING ARRANGEMENTS</b></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2">Details on long-term debt
 at March&#xA0;31, 2018, March&#xA0;31, 2017 and December&#xA0;31,
 2017 are shown below:</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="79%"></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>($
 millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Unitil
 Corporation:</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">6.33% Senior Notes, Due
 May&#xA0;1, 2022</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>20.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">3.70% Senior Notes, Due
 August&#xA0;1, 2026</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>30.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">30.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">30.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Unitil Energy First
 Mortgage Bonds:</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">5.24% Senior Secured Notes,
 Due March&#xA0;2, 2020</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">8.49% Senior Secured Notes,
 Due October&#xA0;14, 2024</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">6.96% Senior Secured Notes,
 Due September&#xA0;1, 2028</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>20.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">8.00% Senior Secured Notes,
 Due May&#xA0;1, 2031</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>15.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">6.32% Senior Secured Notes,
 Due September&#xA0;15, 2036</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>15.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Fitchburg:</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">6.75% Senior Notes, Due
 November&#xA0;30, 2023</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">6.79% Senior Notes, Due
 October&#xA0;15, 2025</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">3.52% Senior Notes, Due
 November&#xA0;1, 2027</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">7.37% Senior Notes, Due
 January&#xA0;15, 2029</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>12.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">12.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">12.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">5.90% Senior Notes, Due
 December&#xA0;15, 2030</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>15.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">7.98% Senior Notes, Due
 June&#xA0;1, 2031</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>14.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">14.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">14.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">4.32% Senior Notes, Due
 November&#xA0;1, 2047</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>15.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Northern
 Utilities:</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">6.95% Senior Notes, Due
 December&#xA0;3, 2018</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">5.29% Senior Notes, Due
 March&#xA0;2, 2020</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>16.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">25.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">25.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">3.52% Senior Notes, Due
 November&#xA0;1, 2027</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>20.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">7.72% Senior Notes, Due
 December&#xA0;3, 2038</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>50.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">50.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">50.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">4.42% Senior Notes, Due
 October&#xA0;15, 2044</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>50.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">50.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">50.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">4.32% Senior Notes, Due
 November&#xA0;1, 2047</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>30.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">30.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Granite
 State:</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">7.15% Senior Notes, Due
 December&#xA0;15, 2018</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>3.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">3.72% Senior Notes, Due
 November&#xA0;1, 2027</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>15.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Unitil Realty
 Corp.:</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">8.00% Senior Secured Notes,
 Due Through August&#xA0;1, 2017</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Long-Term
 Debt</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>396.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">336.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">409.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Unamortized Debt
 Issuance Costs</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>3.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Long-Term Debt, net
 of Unamortized Debt Issuance Costs</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>392.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">333.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">406.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Current
 Portion</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>29.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">30.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">29.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Long-term Debt, Less
 Current Portion</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>363.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">303.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">376.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Fair Value of Long-Term
 Debt</b> &#x2013; Currently, the Company believes that there is no
 active market in the Company&#x2019;s debt securities, which have
 all been sold through private placements. If there were an active
 market for the Company&#x2019;s debt securities, the fair value of
 the Company&#x2019;s long-term debt would be estimated based on the
 quoted market prices for the same or similar issues, or on the
 current rates offered to the Company for debt of the same remaining
 maturities. The fair value of the Company&#x2019;s long-term debt is
 estimated using Level&#xA0;2 inputs (valuations based on quoted
 prices available in active markets for similar assets or
 liabilities, quoted prices for identical or similar assets or
 liabilities in inactive markets, inputs other than quoted prices
 that are directly observable, and inputs derived principally from
 market data.) In estimating the fair value of the Company&#x2019;s
 long-term debt, the assumed market yield reflects the Moody&#x2019;s
 Baa Utility Bond Average Yield. Costs, including prepayment costs,
 associated with the early settlement of long-term debt are not
 taken into consideration in determining fair value.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="79%"></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>($
 millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Estimated Fair Value of
 Long-Term Debt</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>428.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">374.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">457.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Credit
 Arrangements</b></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2">On October&#xA0;4, 2013,
 the Company entered into an Amended and Restated Credit Agreement
 (as further amended, restated, amended and restated, modified or
 supplemented from time to time, the &#x201C;Credit Facility&#x201D;).
 The Credit Facility terminates October&#xA0;4, 2020 and provides
 for a borrowing limit of $120&#xA0;million which includes a
 $25&#xA0;million sublimit for the issuance of standby letters of
 credit. The Credit Facility provides Unitil with the ability to
 elect that borrowings under the Credit Facility bear interest under
 several options, including at a daily fluctuating rate of interest
 per annum equal to <font style="WHITE-SPACE: nowrap">one-month</font> London Interbank Offered
 Rate (LIBOR) plus 1.25%. Provided there is no event of default
 under the Credit Facility, the Company may on a <font style="WHITE-SPACE: nowrap">one-time</font> basis request an increase in
 the aggregate commitments under the Credit Facility by an aggregate
 additional amount of up to $30&#xA0;million.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company utilizes the
 Credit Facility for cash management purposes related to its
 short-term operating activities. Total gross borrowings were
 $88.9&#xA0;million for the three months ended March&#xA0;31, 2018.
 Total gross repayments were $81.9&#xA0;million for the three months
 ended March&#xA0;31, 2017. The following table details the
 borrowing limits, amounts outstanding and amounts available under
 the revolving Credit Facility as of March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017:</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="79%"></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Revolving&#xA0;Credit&#xA0;Facility&#xA0;($&#xA0;millions)</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Limit</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>120.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">120.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">120.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Short-Term Borrowings
 Outstanding</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>45.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">76.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">38.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Letters of Credit
 Outstanding</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Available</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>74.7</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">42.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">81.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">The Credit Facility
 contains customary terms and conditions for credit facilities of
 this type, including affirmative and negative covenants. There are
 restrictions on, among other things, Unitil Corporation&#x2019;s and
 its subsidiaries&#x2019; ability to permit liens or incur
 indebtedness, and restrictions on Unitil&#x2019;s ability to merge
 or consolidate with another entity or change its line of business.
 The affirmative and negative covenants under the Credit Facility
 shall apply until the Credit Facility terminates and all amounts
 borrowed under the Credit Facility are paid in full (or with
 respect to letters of credit, they are cash collateralized). The
 only financial covenant in the Credit Facility provides that Funded
 Debt to Capitalization (as each term is defined in the Credit
 Facility) cannot exceed 65%, tested on a quarterly basis. At
 March&#xA0;31, 2018, March&#xA0;31, 2017 and December&#xA0;31,
 2017, the Company was in compliance with the covenants contained in
 the Credit Facility in effect on that date. (See also &#x201C;Credit
 Arrangements&#x201D; in Note 4.)</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The weighted average
 interest rates on all short-term borrowings and intercompany money
 pool transactions were 2.9% and 2.1% for the three months ended
 March&#xA0;31, 2018 and March&#xA0;31, 2017, respectively. The
 weighted average interest rate on all short-term borrowings for the
 twelve months ended December&#xA0;31, 2017 was 2.4%.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">On November&#xA0;1, 2017,
 Northern Utilities issued $20&#xA0;million of Notes due 2027 at
 3.52% and $30&#xA0;million of Notes due 2047 at 4.32%. Fitchburg
 issued $10&#xA0;million of Notes due 2027 at 3.52% and
 $15&#xA0;million of Notes due 2047 at 4.32%. Granite State issued
 $15&#xA0;million of Notes due 2027 at 3.72%. Northern Utilities,
 Fitchburg and Granite State used the net proceeds from these
 offerings to refinance higher cost long-term debt that matured in
 2017, to repay short-term debt and for general corporate purposes.
 Approximately $0.7&#xA0;million of costs associated with these
 issuances have been netted against Long-Term Debt for presentation
 purposes on the Consolidated Balance Sheets.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">In April 2014, Unitil
 Service Corp. entered into a financing arrangement, structured as a
 capital lease obligation, for various information systems and
 technology equipment. Final funding under this capital lease
 occurred on October&#xA0;30, 2015, resulting in total funding of
 $13.4&#xA0;million. The capital lease matures on September&#xA0;30,
 2020. As of March&#xA0;31, 2018, there are $2.7&#xA0;million of
 current and $4.4&#xA0;million of noncurrent obligations under this
 capital lease on the Company&#x2019;s Consolidated Balance
 Sheets.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Unitil Corporation and its
 utility subsidiaries, Fitchburg, Unitil Energy, Northern Utilities,
 and Granite State are currently rated &#x201C;BBB+&#x201D; by
 Standard&#xA0;&amp; Poor&#x2019;s Ratings Services. Unitil
 Corporation and Granite State are currently rated
 &#x201C;Baa2&#x201D;, and Fitchburg, Unitil Energy and Northern
 Utilities are currently rated &#x201C;Baa1&#x201D; by Moody&#x2019;s
 Investors Services.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Northern Utilities enters
 into asset management agreements under which Northern Utilities
 releases certain natural gas pipeline and storage assets, resells
 the natural gas storage inventory to an asset manager and
 subsequently repurchases the inventory over the course of the
 natural gas heating season at the same price at which it sold the
 natural gas inventory to the asset manager. There was
 $1.0&#xA0;million, $3.8&#xA0;million and $8.5&#xA0;million of
 natural gas storage inventory at March&#xA0;31, 2018,&#xA0;March
 31, 2017 and December&#xA0;31, 2017, respectively, related to these
 asset management agreements. The amount of natural gas inventory
 released in March 2018 and payable in April 2018 is
 $1.0&#xA0;million and is recorded in Accounts Payable at
 March&#xA0;31, 2018. The amount of natural gas inventory released
 in March 2017 and payable in April 2017 was $2.0&#xA0;million and
 was recorded in Accounts Payable at March&#xA0;31, 2017. The amount
 of natural gas inventory released in December 2017 and payable in
 January 2018 was $3.1&#xA0;million and was recorded in Accounts
 Payable at December&#xA0;31, 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 18px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Guarantees</b></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company provides
 limited guarantees on certain energy and natural gas storage
 management contracts entered into by the distribution utilities.
 The Company&#x2019;s policy is to limit the duration of these
 guarantees. As of March&#xA0;31, 2018, there were approximately
 $17.9&#xA0;million of guarantees outstanding and the longest term
 guarantee extends through August 2018.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company also guarantees
 the payment of principal, interest and other amounts payable on the
 notes issued by Granite State. As of March&#xA0;31, 2018, the
 principal amount outstanding for the 7.15% Granite State notes was
 $3.3&#xA0;million.</font></p>
 </div><span></span>
</td>
</tr>
</table>
<div style="display: none;"><table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtDisclosureTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -URI http://asc.fasb.org/topic&amp;trid=2208564<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<td><strong> Name:</strong></td>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6776332512">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>COMMON STOCK AND PREFERRED STOCK<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquityNoteDisclosureTextBlock', window );">COMMON STOCK AND PREFERRED STOCK</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>NOTE 5 &#x2013; COMMON
 STOCK AND PREFERRED STOCK</b></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Common
 Stock</b></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company&#x2019;s common
 stock trades on the New York Stock Exchange under the symbol,
 &#x201C;UTL.&#x201D;</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company had 14,107,741,
 14,815,585 and 14,860,123 shares of common stock outstanding at
 March&#xA0;31, 2017, December&#xA0;31, 2017 and March&#xA0;31,
 2018, respectively.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Unitil Corporation
 Common Stock Offering</b> - On December&#xA0;14, 2017, the Company
 issued and sold 690,000 shares of its common stock at a price of
 $48.30 per share in a registered public offering (Offering). The
 Company&#x2019;s net increase to Common Equity and Cash proceeds
 from the Offering was approximately $31.7&#xA0;million and was used
 to make equity capital contributions to the Company&#x2019;s
 regulated utility subsidiaries, repay short-term debt and for
 general corporate purposes.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Dividend Reinvestment
 and Stock Purchase Plan -</b> During the first quarter of 2018, the
 Company sold 7,812 shares of its common stock, at an average price
 of $43.71 per share, in connection with its Dividend Reinvestment
 and Stock Purchase Plan (DRP) and its 401(k) plans resulting in net
 proceeds of approximately $341,500. The DRP provides participants
 in the plan a method for investing cash dividends on the
 Company&#x2019;s common stock and cash payments in additional shares
 of the Company&#x2019;s common stock.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Stock Plan -</b> The
 Company maintains the Unitil Corporation Second Amended and
 Restated 2003 Stock Plan (the Stock Plan). Participants in the
 Stock Plan are selected by the Compensation Committee of the Board
 of Directors to receive awards under the Stock Plan, including
 awards of restricted shares (Restricted Shares), or of restricted
 stock units (Restricted Stock Units). The Compensation Committee
 has the authority to determine the sizes of awards; determine the
 terms and conditions of awards in a manner consistent with the
 Stock Plan; construe and interpret the Stock Plan and any agreement
 or instrument entered into under the Stock Plan as they apply to
 participants; establish, amend, or waive rules and regulations for
 the Stock Plan&#x2019;s administration as they apply to
 participants; and, subject to the provisions of the Stock Plan,
 amend the terms and conditions of any outstanding award to the
 extent such terms and conditions are within the discretion of the
 Compensation Committee as provided for in the Stock Plan. On
 April&#xA0;19, 2012, the Company&#x2019;s shareholders approved an
 amendment to the Stock Plan to, among other things, increase the
 maximum number of shares of common stock available for awards to
 plan participants.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The maximum number of
 shares available for awards to participants under the Stock Plan is
 677,500. The maximum number of shares that may be awarded in any
 one calendar year to any one participant is 20,000. In the event of
 any change in capitalization of the Company, the Compensation
 Committee is authorized to make an equitable adjustment to the
 number and kind</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">of shares of common stock
 that may be delivered under the Stock Plan and, in addition, may
 authorize and make an equitable adjustment to the Stock
 Plan&#x2019;s annual individual award limit.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 18px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><u>Restricted
 Shares</u></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2">Outstanding awards of
 Restricted Shares fully vest over a period of four years at a rate
 of 25% each year. During the vesting period, dividends on
 Restricted Shares underlying the award may be credited to a
 participant&#x2019;s account. The Company may deduct or withhold, or
 require a participant to remit to the Company, an amount sufficient
 to satisfy any taxes required by federal, state, or local law or
 regulation to be withheld with respect to any taxable event arising
 in connection with an Award. For purposes of compensation expense,
 Restricted Shares vest immediately upon a participant becoming
 eligible for retirement, as defined in the Stock Plan. Prior to the
 end of the vesting period, the restricted shares are subject to
 forfeiture if the participant ceases to be employed by the Company
 other than due to the participant&#x2019;s death.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">On January&#xA0;29, 2018,
 37,510 Restricted Shares were issued in conjunction with the Stock
 Plan with an aggregate market value at the date of issuance of
 approximately $1.6&#xA0;million. There were 90,882 and 94,880
 <font style="WHITE-SPACE: nowrap">non-vested</font> shares under
 the Stock Plan as of March&#xA0;31, 2018 and 2017, respectively.
 The weighted average grant date fair value of these shares was
 $41.93 and $39.55, respectively. The compensation expense
 associated with the issuance of shares under the Stock Plan is
 being recognized over the vesting period and was $1.8&#xA0;million
 and $1.7&#xA0;million for the three months ended March&#xA0;31,
 2018 and 2017, respectively. At March&#xA0;31, 2018, there was
 approximately $1.3&#xA0;million of total unrecognized compensation
 cost under the Stock Plan which is expected to be recognized over
 approximately 2.8 years. During the three months ended
 March&#xA0;31, 2018 there were 784 shares of Restricted Shares
 forfeited. There were no cancellations under the Stock Plan during
 the three months ended March&#xA0;31, 2018.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"><font style="FONT-FAMILY: Times New Roman" size="2"><u>Restricted Stock
 Units</u></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2">Restricted Stock Units earn
 dividend equivalents and will generally be settled by payment to
 each Director as soon as practicable following the Director&#x2019;s
 separation from service to the Company. The Restricted Stock Units
 will be paid such that the Director will receive (i)&#xA0;70% of
 the shares of the Company&#x2019;s common stock underlying the
 restricted stock units and (ii)&#xA0;cash in an amount equal to the
 fair market value of 30% of the shares of the Company&#x2019;s
 common stock underlying the Restricted Stock Units. The equity
 portion of Restricted Stock Units activity during the three months
 ended March&#xA0;31, 2018 in conjunction with the Stock Plan are
 presented in the following table:</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
 <tr>
 <td width="81%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="8" nowrap="nowrap" align="center">
 <p style="MARGIN-BOTTOM: 1px; MARGIN-TOP: 0px" align="center">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Restricted
 Stock Units (Equity Portion)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Units</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Weighted</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Average</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Stock</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Price</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Restricted Stock Units as
 of December&#xA0;31, 2017</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">52,224</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">36.22</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Restricted Stock Units
 Granted</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Dividend Equivalents
 Earned</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">453</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">42.04</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Restricted Stock Units
 Settled</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Restricted Stock Units as
 of March&#xA0;31, 2018</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>52,677</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>36.27</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">There were 43,696
 Restricted Stock Units outstanding as of March&#xA0;31, 2017 with a
 weighted average stock price of $33.49. Included in Other
 Noncurrent Liabilities on the Company&#x2019;s Consolidated Balance
 Sheets as of March&#xA0;31, 2018, March&#xA0;31, 2017 and
 December&#xA0;31, 2017 is $1.0&#xA0;million, $0.8&#xA0;million and
 $1.0&#xA0;million, respectively, representing the fair value of
 liabilities associated with the portion of fully vested RSUs that
 will be settled in cash.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 18px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Preferred
 Stock</b></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2">There was
 $0.2&#xA0;million, or 1,893 shares, of Unitil Energy&#x2019;s 6.00%
 Series Preferred Stock outstanding as of March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017. There were less
 than $0.1&#xA0;million of total dividends declared on Preferred
 Stock in each of the three month periods ended March&#xA0;31, 2018
 and March&#xA0;31, 2017, respectively.</font></p>
 </div><span></span>
</td>
</tr>
</table>
<div style="display: none;"><table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockholdersEquityNoteDisclosureTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -URI http://asc.fasb.org/topic&amp;trid=2208762<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockholdersEquityNoteDisclosureTextBlock</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6776321232">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>REGULATORY MATTERS<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesDisclosureTextBlock', window );">REGULATORY MATTERS</a></td>
<td class="text"><div>
 <p style="margin-top:18px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>NOTE 6 &#x2013; REGULATORY
 MATTERS</b></font></p>
 <p style="margin-top:6px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>UNITIL&#x2019;S REGULATORY
 MATTERS ARE DESCRIBED IN NOTE 8 TO THE FINANCIAL STATEMENTS IN ITEM
 8 OF PART II OF UNITIL CORPORATION&#x2019;S FORM <font style="white-space:nowrap">10-K</font> FOR DECEMBER&#xA0;31, 2017 AS
 FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON
 FEBRUARY&#xA0;1, 2018.</b></font></p>
 <p style="margin-top:6px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Tax Cuts and Jobs Act of
 2017</b></font></p>
 <p style="margin-top:6px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">At the end of December 2017,
 the United States Congress voted and the President signed into law
 major federal tax law changes Tax Cuts and Jobs Act of 2017 (TCJA)
 effective for tax year 2018. Among other things, the TCJA
 substantially reduces the corporate income tax rate to
 21&#xA0;percent, effective January&#xA0;1, 2018. Each state public
 utility commission, with jurisdiction over the areas that are
 served by Unitil&#x2019;s electric and gas subsidiary companies, has
 or is in the process of issuing procedural orders directing how the
 tax law changes are to be reflected in rates, including requiring
 that the companies provide certain filings and calculations. Unitil
 is fully complying with these orders and will make any necessary
 changes to its rates as directed by the commissions. The FERC has
 opened a rulemaking proceeding on this matter (described below).
 The Company believes that the ultimate resolution of these matters
 will not have a material impact on its financial position,
 operating results or cash flows.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">In Maine, Northern
 Utilities&#x2019; Maine division has recently completed a base rate
 case (described more fully below). The MPUC had issued a procedural
 order indicating that the tax law changes were to be reflected in
 its calculation of final rates for the Company, and the final order
 in that docket incorporated the lower tax rates.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">In New Hampshire, Northern
 Utilities&#x2019; New Hampshire division has a base rate case
 proceeding pending (described below), and the NHPUC issued an order
 directing the Company to show how the tax changes can be effected
 within the schedule for the rate case. On April&#xA0;6, 2018,
 Northern Utilities filed a proposed comprehensive settlement
 agreement among the Company, the Staff of the Public Utilities
 Commission and the Office of Consumer Advocate which includes the
 effect of the tax changes in the calculation of the agreed upon
 revenue requirement. With respect to Unitil Energy, the NHPUC
 directed the Company to make a filing by April&#xA0;1, 2018,
 showing the effect of the tax law changes on rates. On
 March&#xA0;16, 2018, the Company filed for its annual step increase
 pursuant to the provisions of its last base rate case, and included
 in that filing proposed adjustments to account for the tax changes.
 This proposal remains pending.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">In Massachusetts, the
 Attorney General filed a petition with the MDPU requesting that it
 open an investigation to require the flow-through of the tax law
 changes in rates for all utilities subject to the MDPU&#x2019;s
 jurisdiction. On February&#xA0;2, 2018 the MDPU issued an order
 opening an investigation into the effect on rates of the decrease
 in the federal corporate income tax rate on the MDPU&#x2019;s
 regulated utilities. The MDPU consolidated the Attorney
 General&#x2019;s petition into its investigation. In its order, the
 MDPU required each utility company subject to its jurisdiction to
 file, by May&#xA0;1, 2018, a proposal to address the effects of the
 TCJA and to reduce its rates through the establishment of a revised
 cost of service incorporating the lower federal corporate income
 tax rate as of January&#xA0;1, 2018. Such proposals must address
 the adjustment of rates going forward and also incorporate the
 timely refund of revenues associated with the lower tax expense on
 current income and excess accumulated deferred income taxes (ADIT).
 Fitchburg plans to submit filings for both its gas and electric
 divisions with estimated revenue reductions of $0.8 million at each
 respective division. This matter remains pending.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">On March&#xA0;15, 2018, the
 FERC issued a Notice of Proposed Rulemaking (NOPR) that would allow
 it to determine which pipelines under the Natural Gas Act may be
 collecting unjust and unreasonable rates in light of the corporate
 tax rate reduction and changes to the FERC&#x2019;s income tax
 allowance policies. The proposed rule, if adopted, would require an
 interstate pipeline to file a <font style="white-space:nowrap">one-time</font> report on the regulated rate
 effect of the new tax law and changes to the FERC&#x2019;s income
 tax allowance policies. In addition to filing the <font style="white-space:nowrap">one-time</font> report, each pipeline would
 have four options: 1) make a limited rate filing to reduce its
 rates by the percentage reduction in its cost of service shown in
 its report; 2) commit to file either a prepackaged uncontested rate
 settlement or a general rate case by December&#xA0;31, 2018; 3)
 file a statement explaining why it believes its current rates are
 reasonable and no reduction is necessary; or 4) file the required
 report without taking any other action, at which point FERC would
 consider whether to initiate an investigation. Granite State is
 reviewing the NOPR and will comply with all FERC requirements.
 Granite State believes that the ultimate resolution of these
 matters will not have a material impact on its financial position,
 operating results or cash flows.</font></p>
 <p style="margin-top:18px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Rate Case
 Activity</b></font></p>
 <p style="margin-top:6px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Unitil Energy &#x2013;
 Base Rates &#x2013;</b> On April&#xA0;20, 2017 the NHPUC issued its
 final order approving a settlement between Unitil Energy, NHPUC
 Staff and the Office of Consumer Advocate providing for a permanent
 increase of $4.1&#xA0;million in electric base rates, and a three
 year rate plan with an additional rate step adjustment, effective
 May&#xA0;1, 2017, of $0.9&#xA0;million, followed by two rate step
 adjustments in May of 2018 and 2019 to recover the revenue
 requirements associated with annual capital expenditures as defined
 under the rate plan. On March&#xA0;16, 2018, Unitil Energy filed
 its second step adjustment. The filing also incorporated the
 revenue requirement effect of the federal tax decrease pursuant to
 the TCJA, along with the termination of the <font style="white-space:nowrap">one-year</font> reconciliation adjustment
 which had recouped the difference between temporary rates and final
 rates. The net effect of the three adjustments results in a
 proposed revenue decrease of $0.4&#xA0;million. The proposal
 remains pending.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Fitchburg &#x2013; Base
 Rates &#x2013; Electric &#x2013;</b> On April&#xA0;29, 2016 the MDPU
 issued an order approving a $2.1&#xA0;million increase in
 Fitchburg&#x2019;s electric base revenue decoupling target,
 effective May&#xA0;1, 2016. As part of its order, the MDPU
 approved, with modifications, Fitchburg&#x2019;s request for an
 annual capital cost recovery mechanism, which allows for increases
 to target revenues to recover the revenue requirement associated
 with capital additions as defined under the mechanism. In 2016,
 Fitchburg filed its first compliance report on capital investments
 for calendar year 2015. The MDPU approved the recovery of
 approximately $0.5&#xA0;million, effective January&#xA0;1, 2017,
 subject to further investigation and reconciliation. On
 December&#xA0;18, 2017, the MDPU approved Fitchburg&#x2019;s
 calendar year 2015 capital investments and associated revenue
 requirements for recovery. On June&#xA0;29, 2017, Fitchburg filed
 its compliance report on capital investments for calendar year
 2016. On December&#xA0;20, 2017, the MDPU approved the recovery of
 approximately $0.4&#xA0;million, effective January&#xA0;1, 2018,
 subject to further investigation and reconciliation.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Fitchburg &#x2013; Base
 Rates &#x2013; Gas &#x2013;</b> On April&#xA0;29, 2016, the MDPU
 issued an order approving a $1.6&#xA0;million increase in
 Fitchburg&#x2019;s gas base revenue decoupling target, effective
 May&#xA0;1, 2016.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Fitchburg &#x2013; Gas
 Operations &#x2013;</b> On October&#xA0;31, 2016, Fitchburg
 submitted its annual filing under its gas system enhancement
 program to recover the revenue requirements associated with its
 projected capital additions in 2017 as defined under the program.
 The filing sought approval to collect an additional
 $0.9&#xA0;million of annual revenue requirements. On April&#xA0;28,
 2017, the MDPU approved recovery of the projected 2017 revenue
 requirements, subject to reconciliation and a cap of 1.5% on the
 change in revenue requirement to be billed in any given year. The
 cap resulted in approval of an additional $0.5&#xA0;million of
 annual revenue requirements to be billed effective May&#xA0;1, 2017
 with the remaining $0.4&#xA0;million of annual revenue requirements
 deferred for billing in future periods. In its April&#xA0;28, 2017
 annual reconciliation filing for 2016 revenue requirements, the
 Company requested that the MDPU waive the 1.5% revenue requirement
 cap. On October&#xA0;31, 2017, the MDPU approved a <font style="white-space:nowrap">one-year</font> waiver of the cap and allowed
 the Company to bill the total 2016 actual reconciliation balance.
 On October&#xA0;31, 2017, Fitchburg submitted its annual filing
 under the program to recover the revenue requirements associated
 with its projected capital additions in 2018. In this filing, the
 Company has requested to change the revenue requirements cap to 3%.
 This matter remains pending.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Northern Utilities
 &#x2013; Base Rates &#x2013; Maine &#x2013;</b> In May 2017, Northern
 Utilities filed a base rate case with the MPUC seeking to increase
 annual revenues by $6.0&#xA0;million. The requested increase was
 subsequently supplemented by an additional $0.7&#xA0;million
 associated with the Company&#x2019;s Targeted Area <font style="white-space:nowrap">Build-out</font> (TAB) Program (see below). In
 addition to the distribution base rate increase, Northern Utilities
 requested to extend its Targeted Infrastructure Replacement
 Adjustment mechanism (TIRA) (see below).</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">On February&#xA0;28, 2018
 the MPUC issued its Final Order (Order) in the base rate case. The
 Order provides for a revenue increase of $2.1&#xA0;million offset
 by a revenue decrease of $2.2&#xA0;million to incorporate the
 effect of the lower federal income tax rate under the TCJA,
 resulting in an overall annual revenue decrease of
 $0.1&#xA0;million. The MPUC approved a return on equity of
 9.5&#xA0;percent and a capital structure reflecting 50&#xA0;percent
 equity and 50&#xA0;percent long-term debt. The Order also provides
 for a reduction in annual depreciation expense reducing the
 Company&#x2019;s annual operating costs by approximately
 $0.5&#xA0;million. The Order addresses a number of other issues
 including a change to therm billing, increases in other delivery
 charges, and cost recovery under the Company&#x2019;s TAB Program
 and TIRA mechanism. The new rates and other changes became
 effective as of March&#xA0;1, 2018. On March&#xA0;16, 2018, the
 Company filed a Motion for Clarification requesting the MPUC
 clarify its Order in light of what the Company believes to be an
 inadvertent inconsistency with the Order regarding 2016 TIRA
 Eligible Facilities, rate base and related annual revenue
 adjustments.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Northern Utilities
 &#x2013; Targeted Infrastructure Replacement Adjustment &#x2013;
 Maine &#x2013;</b> The settlement in Northern Utilities&#x2019; Maine
 division&#x2019;s 2013 rate case allowed the Company to implement a
 TIRA rate mechanism to adjust base distribution rates annually to
 recover the revenue requirements associated with targeted
 investments in gas distribution system infrastructure replacement
 and upgrade projects, including the Company&#x2019;s Cast Iron
 Replacement Program (CIRP). The TIRA had an initial term of four
 years and covered targeted capital expenditures in 2013 through
 2016. In its Order in the current base rate case (see above), the
 MPUC approved an extension of the Company&#x2019;s TIRA mechanism,
 with revision, for an additional eight-year period, which will
 allow for annual rate adjustments through the end of the CIRP
 program. On March&#xA0;30, 2018, the Company filed its request to
 increase its annual base rates to recover the revenue requirements
 for 2017 Eligible Facilities. This matter remains
 pending.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Northern Utilities
 &#x2013; Targeted Area <font style="white-space:nowrap">Build-out</font> Program &#x2013; Maine
 &#x2013;</b> In December 2015, the MPUC approved a TAB program and
 associated rate surcharge mechanism. This program is designed to
 allow the economic extension of natural gas mains to new, targeted
 service areas in Maine. It allows customers in the targeted area
 the ability to pay a rate surcharge, instead of a large upfront
 payment or capital contribution to connect to the natural gas
 delivery system. The initial pilot of the TAB program was approved
 for the City of Saco, and is being built out over a period of three
 years, with the potential to add 1,000 new customers and
 approximately $1&#xA0;million in annual distribution revenue in the
 Saco area. A second TAB program was approved for the Town of
 Sanford, and has the potential to add 2,000 new customers and
 approximately $2&#xA0;million in annual distribution revenue in the
 Sanford area. In its base rate case Order (above), the MPUC
 approved the inclusion of Saco TAB investments in rate base along
 with a cost recovery incentive mechanism for future TAB
 investments.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Northern Utilities
 &#x2013; Base Rates &#x2013; New Hampshire &#x2013;</b> On
 June&#xA0;5, 2017, Northern Utilities filed for a base rate
 increase with the NHPUC seeking to increase annual revenues by
 $4.7&#xA0;million. On June&#xA0;15, 2017, the NHPUC suspended the
 Company&#x2019;s proposed permanent rates tariffs while the filing
 is under regulatory review</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">Northern Utilities reached a
 settlement agreement on temporary rates to produce an increase in
 annual revenues of approximately $1.6&#xA0;million, effective with
 service rendered on and after August&#xA0;1, 2017, and until a
 final, <font style="white-space:nowrap">non-appealable</font> order
 on permanent rates is issued. The settlement agreement was approved
 by the NHPUC on July&#xA0;31, 2017. As of March&#xA0;31, 2018,
 Northern Utilities has deferred approximately $1.1&#xA0;million of
 costs associated with this base rate case. Once a final decision on
 permanent rates is issued, it will be reconciled back to the date
 that temporary rates were implemented.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">On April&#xA0;6, 2018,
 Northern Utilities filed a proposed comprehensive settlement
 agreement among the Company, the NHPUC Staff and the Office of the
 Consumer Advocate. The settling parties agreed to an annual revenue
 increase of $2.6&#xA0;million and an offsetting decrease of
 $1.7&#xA0;million to reflect the effect of the TCJA, for a net
 annual revenue increase of $0.9&#xA0;million, effective May&#xA0;1,
 2018. The parties also agreed to a step increase of
 $2.3&#xA0;million to recover post-test year capital investments,
 also effective May&#xA0;1, 2018. Under the agreement, the company
 may file for a second step increase for effect May&#xA0;1, 2019 to
 recover eligible capital investments in 2018, up to a revenue
 requirement cap of $2.2&#xA0;million. If the company chooses the
 option to implement the second step increase, the next distribution
 base rate case shall be based on an historic test year of no
 earlier than twelve months ending December&#xA0;31, 2020. A hearing
 before the NHPUC to consider the settlement agreement was held on
 April&#xA0;12, 2018. This matter remains pending.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Northern Utilities
 &#x2013; Pipeline Refund &#x2013;</b> On February&#xA0;19, 2015, the
 FERC issued Opinion <font style="white-space:nowrap">No.&#xA0;524-A,</font> the final order in
 Portland Natural Gas Transmission&#x2019;s (PNGTS) Section&#xA0;4
 rate case, requiring PNGTS to issue refunds to shippers. Northern
 Utilities received a pipeline refund of $22.0&#xA0;million on
 April&#xA0;15, 2015. As a gas supply-related refund, the entire
 amount refunded will be credited to Northern Utilities&#x2019;
 customers and marketers over three years as directed by the NHPUC
 and MPUC. As of March&#xA0;31, 2018, $21.4&#xA0;million has been
 refunded to Northern Utilities&#x2019; customers and marketers. The
 Company has recorded current Regulatory Liabilities related to
 these refunds of $0.6&#xA0;million on its Consolidated Balance
 Sheets as of March&#xA0;31, 2018.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Granite State &#x2013;
 Base Rates &#x2013;</b> Granite State has in place a FERC-approved
 second amended settlement agreement under which it is permitted to
 file annually, each June, for a rate adjustment to recover the
 revenue requirements associated with specified capital investments
 in gas transmission projects up to a specific cap on expenditures.
 On June&#xA0;21, 2017 Granite State filed for an annual revenue
 increase under this provision of $0.2&#xA0;million, effective
 August&#xA0;1, 2017. The FERC issued an order approving the filing
 on July&#xA0;28, 2017. This is the last annual rate adjustment
 allowed under the second amended settlement because Granite must
 file a general rate case pursuant to Section&#xA0;4 of the Natural
 Gas Act by April&#xA0;30, 2018 with rates effective no later than
 November&#xA0;1, 2018.</font></p>
 <p style="margin-top:18px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Other
 Matters</b></font></p>
 <p style="margin-top:6px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>NHPUC Energy Efficiency
 Resource Standard Proceeding &#x2013;</b> In May 2015, the NHPUC
 opened a proceeding to establish an Energy Efficiency Resource
 Standard (&#x201C;EERS&#x201D;), an energy efficiency policy with
 specific targets or goals for energy savings that New Hampshire
 electric and gas utilities must meet. On April&#xA0;27, 2016, a
 comprehensive settlement agreement was filed by the parties,
 including Unitil Energy and Northern Utilities, which was approved
 by the NHPUC on August&#xA0;2, 2016. The settlement provides for:
 extending the 2014-2016 Core program an additional year (through
 2017); establishing an EERS; establishing a recovery mechanism to
 compensate the utilities for lost-revenue related to the EERS
 programs; and approving the performance incentives and processes
 for stakeholder involvement, evaluation, measurement and
 verification, and oversight of the EERS programs. In accordance
 with the Settlement, on September&#xA0;1, 2017, the New Hampshire
 electric and gas utilities jointly filed a Statewide Energy
 Efficiency Plan for the period 2018-2020. The Settlement and the
 Statewide Energy Efficiency Plan for the period 2018-2020 were
 approved on January&#xA0;2, 2018.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Unitil Energy &#x2013;
 Electric Grid Modernization &#x2013;</b> In July 2015, the NHPUC
 opened an investigation into Grid Modernization to address a
 variety of issues related to Distribution System Planning, Customer
 Engagement with Distributed Energy Resources, and Utility Cost
 Recovery and Financial Incentives. The NHPUC engaged a consultant
 to direct a Working Group to investigate these issues and to
 prepare a final report with recommendations for the Commission. The
 final report was filed on March&#xA0;20, 2017. This matter remains
 pending.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Unitil Energy &#x2013; Net
 Metering &#x2013;</b> Pursuant to legislation that became effective
 in May 2016, the NHPUC opened a proceeding to consider alternatives
 to the net metering tariffs currently in place. The NHPUC issued an
 Order on June&#xA0;23, 2017. The Order removes the cap on the total
 amount of generation capacity which may be owned or operated by
 customer-generators eligible for net metering. The order also
 adopts an alternative net metering tariff for small
 customer-generators (those with renewable energy systems of 100 kW
 or less) which will remain in effect for a period of years while
 further data is collected and analyzed, <font style="white-space:nowrap"><font style="white-space:nowrap">time-of-use</font></font> and other pilot
 programs are implemented, and a distributed energy resource
 valuation study is conducted. Systems that are installed or queued
 during this period will have their net metering rate structure
 &#x201C;grandfathered&#x201D; until December&#xA0;31, 2040. The
 Company does not believe that this proceeding will have a material
 adverse impact on the Company&#x2019;s financial position, operating
 results or cash flows.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Fitchburg &#x2013;
 Electric Operations &#x2013;</b> On November&#xA0;1, 2017, Fitchburg
 submitted its 2017 annual reconciliation of costs and revenues for
 transition and transmission under its restructuring plan, including
 the reconciliation of costs and revenues for a number of other
 surcharges and cost factors, for review and approval by the MDPU.
 All of the rates were given final approval by the MDPU on
 December&#xA0;28, 2017, effective January&#xA0;1, 2018.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Fitchburg &#x2013; Service
 Quality &#x2013;</b> On March&#xA0;1, 2018, Fitchburg submitted its
 2017 Service Quality Reports for both its gas and electric
 divisions in accordance with new Service Quality Guidelines issued
 by the MDPU in December 2015. Fitchburg reported that it met or
 exceeded its benchmarks for service quality performance in all
 metrics for both its gas and electric divisions. These filings are
 pending approval.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Fitchburg &#x2013; Solar
 Generation &#x2013;</b> On August&#xA0;19, 2016, Fitchburg filed a
 petition with the MDPU seeking approval to develop a 1.3 MW solar
 generation facility located on Company property in Fitchburg,
 Massachusetts, including a cost recovery mechanism to share the
 costs and benefits of the project among all Fitchburg customers. On
 November&#xA0;9, 2016, the MDPU approved a Settlement Agreement
 supporting the proposal, which was reached among the Company, the
 Attorney General of Massachusetts, and the <font style="white-space:nowrap">Low-Income</font> Weatherization and Fuel
 Assistance Program Network. Construction of the solar generating
 facility was completed and the facility began generating power on
 November&#xA0;22, 2017. On April&#xA0;2, 2018, Fitchburg submitted
 its first filing pursuant to its Solar Cost Adjustment tariff, by
 which the company recovers its annual revenue requirement related
 to its investment in the solar generation facility. The filing
 seeks a net amount of approximately $300,000 for recovery effective
 June&#xA0;1, 2018.</font></p>
 <p style="font-size:1px;margin-top:12px;margin-bottom:0px">
 &#xA0;</p>
 <p style="margin-top:0px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Fitchburg &#x2013; Energy
 Diversity &#x2013;</b> Governor Baker signed into law H4568
 &#x201C;An Act to Promote Energy Diversity&#x201D; on August&#xA0;8,
 2016. Among many sections in the bill, the primary provision adds
 new sections 83c and 83d to the 2008 Green Communities Act.
 Section&#xA0;83c requires every electric distribution company
 (EDC), including Fitchburg, to jointly and competitively solicit
 proposals for at least 400 MW&#x2019;s of offshore wind energy
 generation by June&#xA0;30, 2017, as part of a total of 1,600 MW of
 offshore wind the EDCs are directed to procure by June&#xA0;30,
 2027. The procurement requirement is subject to a determination by
 the MDPU that the proposed long-term contracts are cost-effective.
 Section&#xA0;83d further requires the EDCs to jointly seek
 proposals for cost effective clean energy (hydro and other)
 long-term contracts via one or more staggered solicitations, the
 first of which shall be issued not later than April&#xA0;1, 2017,
 for a total of 9,450,000 megawatt-hours by December&#xA0;31, 2022.
 Emergency regulations implementing these new provisions, 220 C.M.R.
 &#xA7;&#xA0;23.00 et seq. and 220 C.M.R. &#xA7; 24.00 et seq. were
 adopted by the MDPU on December&#xA0;29, 2016, and adopted as final
 regulations on March&#xA0;8, 2017. The EDCs issued the RFP for
 Long-Term Contracts for Clean Energy Projects, pursuant to
 Section&#xA0;83d on March&#xA0;31, 2017 and project proposals were
 received on July&#xA0;27, 2017. Final selection of projects
 concluded in the first quarter of 2018 and contract negotiation is
 underway. The EDCs issued the RFP for Long-Term Contracts for
 Offshore Wind Energy Projects pursuant to Section&#xA0;83c on
 June&#xA0;29, 2017 and project proposals were received on
 December&#xA0;20, 2017.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Fitchburg &#x2013; Clean
 Energy RFP &#x2013;</b> Pursuant to Section&#xA0;83a of the Green
 Communities Act in Massachusetts and similar clean energy
 directives established in Connecticut and Rhode Island, state
 agencies and the electric distribution companies in the three
 states, including Fitchburg, issued an RFP for clean energy
 resources (including Class&#xA0;I renewable generation and large
 hydroelectric generation) in November 2015. The RFP sought
 proposals for clean energy and transmission projects that can
 deliver new renewable energy to the three states. Project proposals
 were received in January 2016. Selection of contracts concluded
 during the fourth quarter of 2016 and contract negotiations
 concluded during the second quarter of 2017. On September&#xA0;20,
 2017, Fitchburg, along with the other three EDCs, filed for
 approval of the purchase power agreements which were negotiated as
 a result of the joint solicitation. A hearing on the merits was
 held in February 2018. This matter remains pending.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Fitchburg &#x2013; Other
 &#x2013;</b> On August&#xA0;25, 2017, the Massachusetts Department
 of Energy Resources (&#x201C;DOER&#x201D;) issued its final Solar
 Massachusetts Renewable Target (SMART) Program regulations. These
 regulations were promulgated pursuant to Chapter 75 of the Acts of
 2016, which required the DOER to establish a new solar incentive
 program. The regulation is designed to support the continued
 development of an additional 1,600 MW of solar renewable energy
 generating sources via a declining block compensation mechanism. On
 September&#xA0;12, 2017, the Massachusetts electric utilities
 jointly filed a model SMART tariff with the MDPU to implement the
 program and propose a cost recovery mechanism. Hearings on the
 merits were held in late March and early April 2018. This filing
 remains pending. In the interim, the current program for solar
 renewable energy credits, known as <font style="white-space:nowrap">SREC-II,</font> remains in effect for all
 eligible solar facilities.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">On May&#xA0;11, 2016, the
 MDPU issued an Order commencing a rulemaking proceeding to adopt
 emergency regulations amending 220 C.M.R. &#xA7; 18.00 et seq.
 (&#x201C;Net Metering Regulations&#x201D;). Specifically, the MDPU
 amended its Net Metering Regulations to implement the net metering
 provisions of An Act Relative to Solar Energy, St. 2016, c. 75,
 &#xA7;&#xA7; <font style="white-space:nowrap">3-9,</font> and to
 make additional clerical changes to the Net Metering Regulations.
 On July&#xA0;15, 2016, the MDPU issued an order approving Final Net
 Metering Regulations. Fitchburg&#x2019;s tariff, filed in compliance
 with the new regulations, was approved on February&#xA0;7,
 2017.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">In December&#xA0;2013, the
 MDPU opened an investigation into Modernization of the Electric
 Grid. The stated objective of the Grid Modernization proceeding is
 to ensure that the electric distribution companies &#x201C;adopt
 grid modernization policies and practices.&#x201D; In
 June&#xA0;2014, the MDPU issued its first Grid Modernization order,
 setting forth a requirement that each electric distribution company
 submit a <font style="white-space:nowrap">ten-year</font> strategic
 Grid Modernization Plan (GMP). As part of the GMP, each company
 must include a five-year Short-Term Investment Plan (STIP), which
 must include an approach to achieving advanced metering
 functionality within five years of the Department&#x2019;s approval
 of the GMP. The filing of a GMP is a recurring obligation and must
 be updated as part of subsequent base distribution rate cases,
 which by statute must occur no less often than every five years.
 Capital investments contained in the STIP are eligible for
 <font style="white-space:nowrap">pre-authorization,</font> meaning
 that the MDPU will not revisit in later filings whether the Company
 should have proceeded with these investments. Fitchburg and the
 Commonwealth&#x2019;s three other electric distribution companies
 filed their initial GMPs on August&#xA0;19, 2015. These filings are
 currently under MDPU review and remain pending.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">On January&#xA0;28, 2016 the
 MDPU approved Fitchburg&#x2019;s Three-Year Energy Efficiency Plan
 for 2016-2018, subject to limited modifications and directives in
 the Order. The Department found that the savings goals included in
 each Three-Year Plan are reasonable and are consistent with the
 achievement of all available cost-effective energy efficiency;
 approved each Program Administrator&#x2019;s program implementation
 cost budget for the Three-Year Plans; approved the performance
 incentive pool, mechanism, and payout rates; found that all
 proposed energy efficiency programs are cost-effective; found that
 funding sources are reasonable and that each Program Administrator
 may recover the funds to implement its energy efficiency plan
 through its Energy Efficiency Surcharge; and found that each
 Program Administrator&#x2019;s Three-Year Plan is consistent with
 the Green Communities Act, the Guidelines, and Department
 precedent.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>FERC Transmission Formula
 Rate Proceedings &#x2013;</b> Pursuant to Section&#xA0;206 of the
 Federal Power Act, there are several pending proceedings before the
 FERC concerning the justness and reasonableness of the Return on
 Equity (&#x201C;ROE&#x201D;) component of the <font style="white-space:nowrap">ISO-New</font> England, Inc. Participating
 Transmission Owners&#x2019; Regional Network Service and Local
 Network Service formula rates. On April&#xA0;14, 2017, the U.S.
 Court of Appeals for the D.C. Circuit issued an opinion vacating a
 decision of the FERC with respect to these formula rates, and
 remanded it for further proceedings. The FERC had found that the
 Transmission Owners existing ROE was unlawful, and had set a new
 ROE. The Court found that the FERC had failed to articulate a
 satisfactory explanation for its orders. At this time, the ROE set
 in the vacated order will remain in place until further FERC action
 is taken. Separately, on March&#xA0;15, 2018, the Transmission
 Owners filed a petition for review with the Court of certain orders
 of the FERC setting for hearing other complaints challenging the
 allowed return on equity component of the formula rates. Fitchburg
 and Unitil Energy are Participating Transmission Owners, although
 Unitil Energy does not own transmission plant. To the extent that
 these proceedings result in any changes to the rates being charged,
 a retroactive reconciliation may be required. The Company does not
 believe that these proceedings will have a material adverse impact
 on the Company&#x2019;s financial condition or results of
 operations.</font></p>
 <p style="margin-top:18px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Legal
 Proceedings</b></font></p>
 <p style="margin-top:6px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">The Company is involved in
 legal and administrative proceedings and claims of various types,
 which arise in the ordinary course of business. The Company
 believes, based upon information furnished by counsel and others,
 that the ultimate resolution of these claims will not have a
 material impact on its financial position, operating results or
 cash flows.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">In early 2009, a putative
 class action complaint was filed against Unitil&#x2019;s
 Massachusetts based utility, Fitchburg, in Massachusetts&#x2019;
 Worcester Superior Court (the &#x201C;Court&#x201D;), (captioned
 Bellermann et al v. Fitchburg Gas and Electric Light Company). The
 Complaint seeks an unspecified amount of damages, including the
 cost of temporary housing and alternative fuel sources, emotional
 and physical pain and suffering and property damages allegedly
 incurred by customers in connection with the loss of electric
 service during the ice storm in Fitchburg&#x2019;s service territory
 in December 2008. The Massachusetts Supreme Judicial Court issued
 an order denying class certification status in July&#xA0;2016,
 though the plaintiffs&#x2019; individual claims remain pending. The
 Company continues to believe these claims are without merit and
 will continue to defend itself vigorously.</font></p>
 </div><span></span>
</td>
</tr>
</table>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -URI http://asc.fasb.org/topic&amp;trid=2156578<br></p></div>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6696726544">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>ENVIRONMENTAL MATTERS<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EnvironmentalLossContingencyDisclosureTextBlock', window );">ENVIRONMENTAL MATTERS</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>NOTE 7 &#x2013;
 ENVIRONMENTAL MATTERS</b></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>UNITIL&#x2019;S
 ENVIRONMENTAL MATTERS ARE DESCRIBED IN NOTE 8 TO THE FINANCIAL
 STATEMENTS IN ITEM&#xA0;8 OF PART II OF UNITIL CORPORATION&#x2019;S
 FORM <font style="WHITE-SPACE: nowrap">10-K</font> FOR
 DECEMBER&#xA0;31, 2017 AS FILED WITH THE SECURITIES AND EXCHANGE
 COMMISSION ON FEBRUARY&#xA0;1, 2018.</b></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company&#x2019;s past
 and present operations include activities that are generally
 subject to extensive and complex federal and state environmental
 laws and regulations. The Company is in material compliance with
 applicable environmental and safety laws and regulations and, as of
 March&#xA0;31, 2018, has not identified any material losses
 reasonably likely to be incurred in excess of recorded amounts.
 However, we cannot assure that significant costs and liabilities
 will not be incurred in the future. It is possible that other
 developments, such as increasingly stringent federal, state or
 local environmental laws and regulations could result in increased
 environmental compliance costs. Based on the Company&#x2019;s
 current assessment of its environmental responsibilities, existing
 legal requirements and regulatory policies, the Company does not
 believe that these environmental costs will have a material adverse
 effect on the Company&#x2019;s consolidated financial position or
 results of operations.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Northern Utilities
 Manufactured Gas Plant Sites &#x2013;</b> Northern Utilities has an
 extensive program to identify, investigate and remediate former
 manufactured gas plant (MGP) sites, which were operated from the
 <font style="WHITE-SPACE: nowrap">mid-1800s</font> through the
 <font style="WHITE-SPACE: nowrap">mid-1900s.</font> In New
 Hampshire, MGP sites were identified in Dover, Exeter, Portsmouth,
 Rochester and Somersworth. In Maine, Northern Utilities has
 documented the presence of MGP sites in Lewiston and Portland, and
 a former MGP disposal site in Scarborough.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Northern Utilities has
 worked with the Maine Department of Environmental Protection (ME
 DEP) and New Hampshire Department of Environmental Services (NH
 DES) to address environmental concerns with these sites. Northern
 Utilities or others have substantially completed remediation of all
 sites, though on site monitoring continues and it is possible that
 future activities may be required. Supplemental remediation at the
 Exeter and Somersworth MGP sites commenced in the second quarter of
 2018 with anticipated completions by the third quarter of
 2018.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The NHPUC and MPUC have
 approved regulatory mechanisms for the recovery of MGP
 environmental costs. For Northern Utilities&#x2019; New Hampshire
 division, the NHPUC has approved the recovery of MGP environmental
 costs over succeeding seven-year periods. For Northern
 Utilities&#x2019; Maine division, the MPUC has authorized the
 recovery of environmental remediation costs over succeeding
 five-&#xA0;year periods.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Environmental
 Obligations table below shows the amounts accrued for Northern
 Utilities related to estimated future cleanup costs associated with
 Northern Utilities&#x2019; environmental remediation obligations for
 former MGP sites. Corresponding Regulatory Assets were recorded to
 reflect that the future recovery of these environmental remediation
 costs is expected based on regulatory precedent and established
 practices.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Fitchburg&#x2019;s
 Manufactured Gas Plant Site &#x2013;</b> Fitchburg has worked with
 the Massachusetts Department of Environmental Protection to address
 environmental concerns with the former MGP site at Sawyer Passway,
 and has substantially completed remediation activities, though on
 site monitoring will continue and it is possible that future
 activities may be required.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">The Environmental
 Obligations table below shows the amounts accrued for Fitchburg
 related to estimated future cleanup costs for permanent remediation
 of the Sawyer Passway site with a corresponding Regulatory Asset
 recorded to reflect that the recovery of these environmental
 remediation costs are probable through the regulatory process. The
 amounts recorded do not assume any amounts are recoverable from
 insurance companies or other third parties. Fitchburg recovers the
 environmental response costs incurred at this former MGP site in
 gas rates pursuant to the terms of a cost recovery agreement
 approved by the MDPU. Pursuant to this agreement, Fitchburg is
 authorized to amortize and recover environmental response costs
 from gas customers over succeeding seven-year periods.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The following table sets
 forth a summary of changes in the Company&#x2019;s liability for
 Environmental Obligations for the three months ended March&#xA0;31,
 2018 and 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="76%"></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
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 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
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 <td valign="bottom" width="2%"></td>
 <td></td>
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 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Environmental
 Obligations</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom" colspan="5"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom" colspan="5"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom" colspan="5"></td>
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 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="22" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>($
 millions)</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Fitchburg</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Northern<br />
 Utilities</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="22" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three months ended
 March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Balance at
 Beginning of Period</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>2.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>2.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Additions</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Payments /
 Reductions</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Balance at End of
 Period</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>2.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>2.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Current
 Portion</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Noncurrent Balance at
 End of Period</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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 <td valign="bottom"></td>
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 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
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 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
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 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
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 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
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 <td>&#xA0;</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for environmental loss contingencies, such as presence of hazardous waste, relevant information from reports issued by regulators, and estimated costs to achieve compliance with regulatory requirements. This element may be used for all of an entity's disclosures about environmental loss contingencies.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -URI http://asc.fasb.org/subtopic&amp;trid=2175709<br></p></div>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6776290896">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>INCOME TAXES<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeTaxDisclosureTextBlock', window );">INCOME TAXES</a></td>
<td class="text"><div>
 <p style="margin-top:18px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>NOTE 8: INCOME
 TAXES</b></font></p>
 <p style="margin-top:6px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">In December 2017, the Tax
 Cuts and Jobs Act (TCJA), which included a reduction to the
 corporate federal income tax rate to 21% effective January 1, 2018,
 was signed into law. In accordance with GAAP Accounting Standard
 740, the Company revalued its Accumulated Deferred Income Taxes
 (ADIT) at the new 21% tax rate at which the ADIT will be reversed
 in future periods. The Company recorded reasonable estimates to
 reflect the impacts of the Tax Act and recorded a net Regulatory
 Liability in the amount of $48.9 million at December 31, 2017 as a
 result of the ADIT revaluation.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">On March&#xA0;15, 2018; FERC
 issued its Notice of Proposed Rulemaking in Docket
 No.&#xA0;RM18-11-000 in which FERC provided specific guidance on
 the flow back of excess ADIT: <i>The amount of the reduction to
 ADIT that was collected from customers but is no longer payable to
 the IRS is excess ADIT and should be flowed back to ratepayers
 under general ratemaking principles.</i> Subject to regulatory
 approval, the Company expects to flow back to customers a net
 $47.1&#xA0;million of the excess ADIT created as a result of the
 lowering of the statutory tax rate by the TCJA.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">Based on communications
 received by the Company from its state regulators in rate cases and
 other regulatory proceedings in the first quarter of 2018 and as
 prescribed in the TCJA, the recent FERC guidance noted above and
 IRS normalization rules; the benefit of these excess ADIT amounts
 will be subject to flow back to customers in future utility rates
 according to the Average Rate Assumption Method (ARAM). ARAM
 reconciles excess ADIT at the reversal rate of the underlying
 book/tax temporary timing differences. The Company estimates the
 ARAM flow back period to be between fifteen and twenty years. The
 Company&#x2019;s regulators and the IRS are each expected to issue
 guidance in future periods that will determine the final
 disposition of the re-measurement of regulatory deferred tax
 balances. At this time, the Company has applied a reasonable
 interpretation of the TCJA and a reasonable estimate of the
 regulatory resolution. Future clarification of the TCJA and
 regulatory decisions may change the amounts estimated.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">In addition to the excess
 $47.1 million ADIT amounts the Company expects to flow back to
 customers in future utility rates, as noted above, there was $1.8
 million of excess ADIT at December 31, 2017, which had not been
 previously included in customers&#x2019; utility rates. During 2018,
 the Company determined that since this excess ADIT had not been
 previously collected from utility customers; it would, therefore,
 not be subject to flow back to customers in future rates. The
 Company will recognize a nonrecurring benefit in its tax provision
 as the underlying book/tax temporary differences reverse in the
 current and future periods.</font></p>
 <p style="font-size:1px;margin-top:12px;margin-bottom:0px">
 &#xA0;</p>
 <p style="margin-top:0px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">The Company filed its tax
 returns for the year ended December&#xA0;31, 2016 with the Internal
 Revenue Service in September 2017 and generated additional federal
 net operating loss carryforward (NOLC) assets principally due to
 current tax repair deductions, tax depreciation and research and
 development deductions. In 2016, the Company recorded a benefit of
 approximately $0.7&#xA0;million for New Hampshire business
 enterprise tax credits utilized in filing the Company&#x2019;s 2015
 tax returns. For the year ended December&#xA0;31, 2017, the Company
 decreased its federal NOLC $1.1&#xA0;million in the calculation of
 its provisions for income taxes for the period and revalued the
 NOLC by $10.1&#xA0;million for federal rate of 21% enacted in the
 TCJA.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">As of December&#xA0;31,
 2017, the Company had recorded cumulative federal and state NOLC
 assets of $12.7&#xA0;million to offset against taxes payable in
 future periods. If unused, the Company&#x2019;s NOLC carryforward
 assets will begin to expire in 2029. In addition, at
 December&#xA0;31, 2017, the Company had $3.5&#xA0;million of
 cumulative alternative minimum tax credits, general business tax
 credit and other state tax credit carryforwards to offset future
 income taxes payable.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">In March 2018, Unitil
 Corporation received notice that its Federal Income Tax return
 filings for the years ended December&#xA0;31, 2015
 and&#xA0;December&#xA0;31, 2016 are under examination by the IRS.
 Currently, the Company believes that the ultimate resolution of
 this examination will not have a material impact on the
 Company&#x2019;s financial statements. The Company remains subject
 to examination by New Hampshire tax authorities for the tax periods
 ended December&#xA0;31, 2014; December&#xA0;31, 2015; and
 December&#xA0;31, 2016. Income tax filings for the year ended
 December&#xA0;31, 2016 have been filed with the New Hampshire
 Department of Revenue Administration. The State of Maine has
 concluded its review of the Company&#x2019;s tax returns for
 December&#xA0;31, 2014, December&#xA0;31, 2015, and
 December&#xA0;31, 2016 which resulted in a small additional refund
 to the Company.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">The Company evaluated its
 tax positions at March&#xA0;31, 2018 in accordance with the FASB
 Codification, and has concluded that no adjustment for recognition,
 <font style="white-space:nowrap">de-recognition,</font> settlement
 and foreseeable future events to any tax liabilities or assets as
 defined by the FASB Codification is required. The Company remains
 subject to examination by Federal, Maine, Massachusetts, and New
 Hampshire tax authorities for the tax periods ended
 December&#xA0;31, 2014;&#xA0;December&#xA0;31, 2015; and
 December&#xA0;31, 2016.</font></p>
 <p style="margin-top:12px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">The Company bills its
 customers for sales tax in Massachusetts and Maine and consumption
 tax in New Hampshire. These taxes are remitted to the appropriate
 departments of revenue in each state and are excluded from revenues
 on the Company&#x2019;s unaudited Consolidated Statements of
 Earnings.</font></p>
 </div><span></span>
</td>
</tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -URI http://asc.fasb.org/topic&amp;trid=2144680<br></p></div>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6938415088">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>RETIREMENT BENEFIT OBLIGATIONS<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock', window );">RETIREMENT BENEFIT OBLIGATIONS</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>NOTE 9: RETIREMENT
 BENEFIT OBLIGATIONS</b></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company <font style="WHITE-SPACE: nowrap">co-sponsors</font> the Unitil Corporation
 Retirement Plan (Pension Plan), the Unitil Retiree Health and
 Welfare Benefits Plan (PBOP Plan), and the Unitil Corporation
 Supplemental Executive Retirement Plan (SERP) to provide certain
 pension and postretirement benefits for its retirees and current
 employees. Please see Note 10 to the Consolidated Financial
 Statements in the Company&#x2019;s Form <font style="WHITE-SPACE: nowrap">10-K</font> for the year ended
 December&#xA0;31, 2017 as filed with the SEC on February&#xA0;1,
 2018 for additional information regarding these plans.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">The following table
 includes the key weighted average assumptions used in determining
 the Company&#x2019;s benefit plan costs and obligations:</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="91%"></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
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 <td valign="bottom" width="2%"></td>
 <td></td>
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 <td></td>
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 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
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 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Used to Determine Plan
 Costs</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
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 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Discount Rate</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
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 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>%&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4.10</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
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 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Rate of Compensation
 Increase</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>3.00</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>%&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.00</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Expected Long-term rate of
 return on plan assets</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
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 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>%&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.75</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
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 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
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 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Health Care Cost Trend Rate
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 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
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 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>%&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">8.00</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
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 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
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 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>4.50</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>%&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4.00</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
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 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
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 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Year that Ultimate Health
 Care Cost Trend Rate is reached</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>2024</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2025</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The following table
 provides the components of the Company&#x2019;s Retirement plan
 costs ($000&#x2019;s):</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="66%"></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Pension
 Plan</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>PBOP
 Plan</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>SERP</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 110pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Three Months
 Ended March&#xA0;31,</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Service Cost</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>848</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">824</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>733</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">744</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>122</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">115</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Interest Cost</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,469</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,514</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>851</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">978</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>101</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">98</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Expected Return on Plan
 Assets</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(1,946</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(1,819</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(409</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(337</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Prior Service Cost
 Amortization</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>81</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">66</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>327</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">350</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>47</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">47</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Actuarial Loss
 Amortization</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,447</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,176</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>346</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">524</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>122</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">74</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><font style="WHITE-SPACE: nowrap">Sub-total</font></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,899</b></font></td>
 <td valign="bottom" nowrap="nowrap"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,761</font></td>
 <td valign="bottom" nowrap="nowrap"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,848</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2,259</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>392</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">334</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Amounts Capitalized and
 Deferred</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(720</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(662</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(742</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(1,037</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(113</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(99</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Net Periodic Benefit Cost
 Recognized</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,179</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,099</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,106</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,222</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>279</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">235</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"><font style="FONT-FAMILY: Times New Roman" size="2"><u>Employer
 Contributions</u></font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2">As of March&#xA0;31, 2018,
 the Company had made $1.2&#xA0;million and $1.0&#xA0;million of
 contributions to its Pension Plan and PBOP Plan, respectively, in
 2018. The Company, along with its subsidiaries, expects to continue
 to make contributions to its Pension and PBOP Plans in 2018 and
 future years at minimum required and discretionary funding levels
 consistent with the amounts recovered in the distribution
 utilities&#x2019; rates for these Pension and PBOP Plan
 costs.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">As of March&#xA0;31, 2018,
 the Company had made $43,900 of benefit payments under the SERP
 Plan in 2018. The Company presently anticipates making an
 additional $356,300 of benefit payments under the SERP Plan in
 2018.</font></p>
 </div><span></span>
</td>
</tr>
</table>
<div style="display: none;"><table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock">
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for pension and other postretirement benefits.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -URI http://asc.fasb.org/topic&amp;trid=2235017<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6786554416">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_NatureOfOperationsPolicyTextBlock', window );">Nature of Operations</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Nature of Operations</b>
 &#x2013; Unitil Corporation (Unitil or the Company) is a public
 utility holding company. Unitil and its subsidiaries are subject to
 regulation as a holding company system by the Federal Energy
 Regulatory Commission (FERC) under the Energy Policy Act of 2005.
 The following companies are wholly-owned subsidiaries of Unitil:
 Unitil Energy Systems, Inc. (Unitil Energy), Fitchburg Gas and
 Electric Light Company (Fitchburg), Northern Utilities, Inc.
 (Northern Utilities), Granite State Gas Transmission, Inc. (Granite
 State), Unitil Power Corp. (Unitil Power), Unitil Realty Corp.
 (Unitil Realty), Unitil Service Corp. (Unitil Service) and its
 <font style="WHITE-SPACE: nowrap">non-regulated</font> business
 unit Unitil Resources, Inc. (Unitil Resources). Usource Inc. and
 Usource L.L.C. are subsidiaries of Unitil Resources.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company&#x2019;s
 earnings are seasonal and are typically higher in the first and
 fourth quarters when customers use natural gas for heating
 purposes.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Unitil&#x2019;s principal
 business is the local distribution of electricity in the
 southeastern seacoast and state capital regions of New Hampshire
 and the greater Fitchburg area of north central Massachusetts, and
 the local distribution of natural gas in southeastern New
 Hampshire, portions of southern and central Maine and in the
 greater Fitchburg area of north central Massachusetts. Unitil has
 three distribution utility subsidiaries, Unitil Energy, which
 operates in New Hampshire, Fitchburg, which operates in
 Massachusetts and Northern Utilities, which operates in New
 Hampshire and Maine (collectively referred to as the distribution
 utilities).</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Granite State is a natural
 gas transportation pipeline, operating 86 miles of underground gas
 transmission pipeline primarily located in Maine and New Hampshire.
 Granite State provides Northern Utilities with interconnection to
 three major natural gas pipelines and access to domestic natural
 gas supplies in the south and Canadian natural gas supplies in the
 north. Granite State derives its revenues principally from the
 transportation services provided to Northern Utilities and, to a
 lesser extent, third-party marketers.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">A fifth utility subsidiary,
 Unitil Power, formerly functioned as the full requirements
 wholesale power supply provider for Unitil Energy. In connection
 with the implementation of electric industry restructuring in New
 Hampshire, Unitil Power ceased being the wholesale supplier of
 Unitil Energy on May&#xA0;1, 2003 and divested of its long-term
 power supply contracts through the sale of the entitlements to the
 electricity associated with various electric power supply contracts
 it had acquired to serve Unitil Energy&#x2019;s
 customers.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Unitil also has three other
 wholly-owned subsidiaries: Unitil Service; Unitil Realty; and
 Unitil Resources. Unitil Service provides, at cost, a variety of
 administrative and professional services, including regulatory,
 financial, accounting, human resources, engineering, operations,
 technology, energy management and management services on a
 centralized basis to its affiliated Unitil companies. Unitil Realty
 owns and manages the Company&#x2019;s corporate office in Hampton,
 New Hampshire and leases this facility to Unitil Service under a
 long-term lease arrangement. Unitil Resources is the
 Company&#x2019;s wholly-owned <font style="WHITE-SPACE: nowrap">non-regulated</font> subsidiary. Usource,
 Inc. and Usource L.L.C. (collectively, Usource) are wholly-owned
 subsidiaries of Unitil Resources. Usource provides brokering and
 advisory services to large commercial and industrial customers in
 the northeastern United States.</font></p>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BasisOfAccountingPolicyPolicyTextBlock', window );">Basis of Presentation</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Basis of Presentation
 &#x2013;</b> The accompanying unaudited consolidated financial
 statements of Unitil have been prepared in accordance with the
 instructions to Form <font style="WHITE-SPACE: nowrap">10-Q</font>
 and include all of the information and footnotes required by
 generally accepted accounting principles. In the opinion of
 management, all adjustments considered necessary for a fair
 presentation have been included. The results of operations for the
 three months ended March&#xA0;31, 2018 are not necessarily
 indicative of results to be expected for the year ending
 December&#xA0;31, 2018. For further information, please refer to
 Note 1 of Part II to the Consolidated Financial Statements &#x2013;
 &#x201C;Summary of Significant Accounting Policies&#x201D; of the
 Company&#x2019;s Form <font style="WHITE-SPACE: nowrap">10-K</font>
 for the year ended December&#xA0;31, 2017, as filed with the
 Securities and Exchange Commission (SEC) on February&#xA0;1, 2018,
 for a description of the Company&#x2019;s Basis of
 Presentation.</font></p>
 </div><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UtilityRevenueAndExpenseRecognitionPolicy', window );">Utility Revenue Recognition</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Utility Revenue
 Recognition &#x2013;</b> Gas Operating Revenues and Electric
 Operating Revenues consist of billed and unbilled revenue and
 revenue from rate adjustment mechanisms. Billed and unbilled
 revenue includes delivery revenue and pass-through revenue,
 recognized according to tariffs approved by federal and state
 regulatory commissions which determine the amount of revenue the
 Company will record for these items. Revenue from rate adjustment
 mechanisms is accrued revenue, recognized in connection with rate
 adjustment mechanisms, and authorized by regulators for recognition
 in the current period for future cash recoveries from, or credits
 to, customers.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Billed and unbilled revenue
 is recorded when service is rendered or energy is delivered to
 customers. However, the determination of energy sales to individual
 customers is based on the reading of their meters, which occurs on
 a systematic basis throughout the month. At the end of each
 calendar month, amounts of energy delivered to customers since the
 date of the last meter reading are estimated and the corresponding
 unbilled revenues are calculated. These unbilled revenues are
 calculated each month based on estimated customer usage by class
 and applicable customer rates and are then reversed in the
 following month when billed to customers.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">In the first quarter of
 2018, the Company adopted Accounting Standards Update (ASU)
 <font style="WHITE-SPACE: nowrap">2014-09,</font> and its
 subsequent clarifications and amendments outlined in ASU
 <font style="WHITE-SPACE: nowrap">2015-14,</font> ASU <font style="WHITE-SPACE: nowrap">2016-08,</font> ASU <font style="WHITE-SPACE: nowrap">2016-10</font> and ASU <font style="WHITE-SPACE: nowrap">2017-13,</font> on a modified retrospective
 basis, which requires application to contracts with customers
 effective January&#xA0;1, 2018, with the cumulative impact on
 contracts not yet completed as of December&#xA0;31, 2017 recognized
 as an adjustment to the opening balance of Retained Earnings on the
 Company&#x2019;s Consolidated Balance Sheets. There was no
 cumulative effect of adoption to be recognized as an adjustment to
 the opening balance of Retained Earnings on the Company&#x2019;s
 Consolidated Balance Sheets. The adoption of this guidance did not
 have a material impact on the Consolidated Financial Statements as
 of the adoption date or for the three months ended March&#xA0;31,
 2018. A majority of the Company&#x2019;s revenue from contracts with
 customers continues to be recognized on a monthly basis based on
 applicable tariffs and customer monthly consumption. Such revenue
 is recognized using the invoice practical expedient which allows an
 entity to recognize revenue in the amount that directly corresponds
 to the value transferred to the customer.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">As discussed below, the
 Company plans to disclose billed and unbilled revenue separately
 from rate adjustment mechanism revenue in the Notes to the
 Consolidated Financial Statements for periods in 2018 going
 forward, and will also provide this disclosure for prior periods
 for informational purposes.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company&#x2019;s billed
 and unbilled revenue meets the definition of &#x201C;revenues from
 contracts with customers&#x201D; as defined in ASU <font style="WHITE-SPACE: nowrap">2014-09.</font> Revenue recognized in
 connection with rate adjustment mechanisms is consistent with the
 definition of alternative revenue programs in Accounting Standards
 Codification (ASC) <font style="WHITE-SPACE: nowrap"><font style="WHITE-SPACE: nowrap"><font style="WHITE-SPACE: nowrap">980-605-25-3,</font></font></font> as the
 Company has the ability to adjust rates in the future as a result
 of past activities or completed events. ASU <font style="WHITE-SPACE: nowrap">2014-09</font> requires the Company to
 disclose separately the amount of revenues from contracts with
 customers and alternative revenue program revenues.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">In the following tables,
 revenue is classified by the types of goods/services rendered and
 market/customer type. The lower revenues reported in the first
 quarter of 2018 to account for the reduction in the corporate
 income tax rate under the Tax Cuts and Jobs Act of 2017 (TCJA) are
 shown separately in the table below for informational
 purposes.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="78%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended&#xA0;March&#xA0;31,&#xA0;2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 171pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas and
 Electric Operating Revenues ($ millions):</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Electric</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Billed and Unbilled
 Revenue:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Residential</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">35.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">34.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">70.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">C&amp;I</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">50.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">24.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">74.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Revenue Reductions &#x2013;
 TCJA</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(1.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(0.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(2.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 7em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Billed and Unbilled
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">91.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">61.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">153.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Rate Adjustment Mechanism
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(4.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(4.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(8.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Gas and Electric
 Operating Revenues</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>87.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>57.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>144.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="FONT-SIZE: 1pt">
 <td height="16"></td>
 <td height="16" colspan="12"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended&#xA0;March&#xA0;31,&#xA0;2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 171pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas and
 Electric Operating Revenues ($ millions):</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Electric</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Billed and Unbilled
 Revenue:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Residential</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">30.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">27.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">58.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">C&amp;I</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">42.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">19.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">61.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 7em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Billed and Unbilled
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">78.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">49.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">127.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Rate Adjustment Mechanism
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(4.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(3.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Gas and Electric
 Operating Revenues</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>74.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>49.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>124.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Fitchburg is subject to
 revenue decoupling. Revenue decoupling is the term given to the
 elimination of the dependency of a utility&#x2019;s distribution
 revenue on the volume of electricity or natural gas sales. The
 difference between distribution revenue amounts billed to customers
 and the targeted revenue decoupling amounts is recorded as an
 increase or a decrease in Accrued Revenue, which forms the basis
 for resetting rates for future cash recoveries from, or credits to,
 customers. These revenue decoupling targets may be adjusted as a
 result of rate cases that the Company files with the MDPU. The
 Company estimates that revenue decoupling applies to approximately
 27% and 11% of Unitil&#x2019;s total annual electric and natural gas
 sales volumes, respectively.</font></p>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueRecognitionPolicyTextBlock', window );">Other Operating Revenue - Non-regulated</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Other Operating Revenue
 &#x2013; <font style="WHITE-SPACE: nowrap">Non-regulated</font>
 &#x2013;</b> Usource, Unitil&#x2019;s <font style="WHITE-SPACE: nowrap">non-regulated</font> subsidiary, conducts its
 business activities as a broker of competitive energy services.
 Usource does not take title to the electric and gas commodities
 which are the subject of the brokerage contracts. The Company
 records energy brokering revenues based upon the amount of
 electricity and gas delivered to customers through the end of the
 accounting period. Usource partners with certain entities to
 facilitate these brokerage services and pays these entities a fee
 under revenue sharing agreements.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">As discussed above, the
 Company adopted ASU <font style="WHITE-SPACE: nowrap">2014-09</font> in the first quarter of 2018.
 There was no cumulative effect of adoption to be recognized as an
 adjustment to the opening balance of Retained Earnings on the
 Company&#x2019;s Consolidated Balance Sheets. ASU <font style="WHITE-SPACE: nowrap">2014-09</font> requires that payments made by
 Usource to third parties (&#x201C;Channel Partners&#x201D;) for
 revenue sharing agreements are recognized net, as a reduction from
 revenue, where those payments were previously recognized gross as
 an operating expense. Therefore, beginning with the three months
 ended March&#xA0;31, 2018 and going forward, payments made by
 Usource to Channel Partners for revenue sharing agreements are
 reported as &#x201C;Other&#x201D; in the &#x201C;Operating
 Revenues&#x201D; section of the Consolidated Statements of Earnings,
 along with Usource&#x2019;s revenues. Prior to the adoption of ASU
 <font style="WHITE-SPACE: nowrap">2014-09,</font> payments by
 Usource to third parties for revenue sharing agreements are
 included as &#x201C;Operation and Maintenance&#x201D; in the
 &#x201C;Operating Expenses&#x201D; section of the Consolidated
 Statements of Earnings. Those Channel Partner payments were
 $0.3&#xA0;million each of the first quarters of 2018 and
 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">If ASU <font style="WHITE-SPACE: nowrap">2014-09</font> had been adopted retroactively
 for the three months ended March&#xA0;31, 2017, the result would
 have been corresponding reductions of $0.3&#xA0;million in both
 &#x201C;Other&#x201D; in in the &#x201C;Operating Revenues&#x201D;
 section of the Consolidated Statements of Earnings and
 &#x201C;Operation and Maintenance&#x201D; in the &#x201C;Operating
 Expenses&#x201D; section of the Company&#x2019;s Consolidated
 Statements of Earnings as shown in the tables below.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="72%"></td>
 <td valign="bottom" width="11%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="11%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended&#xA0;March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>As
 Reported</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" nowrap="nowrap" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>If ASU <font style="WHITE-SPACE: nowrap">2014-09</font><br />
 Had Been in</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Effect</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 134pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Other
 Operating Revenues ($ millions):</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Usource Contract
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Revenue Sharing
 Payments</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Other Operating
 Revenues</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="FONT-SIZE: 1pt">
 <td height="16"></td>
 <td height="16" colspan="8"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended&#xA0;March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>As
 Reported</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>If ASU <font style="WHITE-SPACE: nowrap">2014-09</font><br />
 Had Been in</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Effect</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 169pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Operation
 and Maintenance Expense ($ millions):</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Operation and Maintenance
 Expense</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>17.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy', window );">Retirement Benefit Costs</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Retirement Benefit Costs
 &#x2013;</b> The Company sponsors the Unitil Corporation Retirement
 Plan (Pension Plan), the Unitil Employee Health and Welfare
 Benefits Plan (PBOP Plan) and the Unitil Corporation Supplemental
 Executive Retirement Plan (SERP).The net periodic benefit costs
 associated with these benefit plans consist of service cost and
 other components (See Note 9 to the Consolidated Financial
 Statements). In the first quarter of 2018, the Company adopted ASU
 <font style="WHITE-SPACE: nowrap">No.&#xA0;2017-07,</font>
 &#x201C;Compensation &#x2013; Retirement Benefits (Topic 715) which
 amends the existing guidance relating to the presentation of net
 periodic pension cost and net periodic other post-retirement
 benefit costs. On a retrospective basis, the amendment requires an
 employer to separate the service cost component from the other
 components of net benefit cost and provides explicit guidance on
 how to present the service cost component and other components in
 the income statement.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">Accordingly, for all
 periods presented in the Consolidated Financial Statements in this
 Form <font style="WHITE-SPACE: nowrap">10-Q</font> for the quarter
 ended March&#xA0;31, 2018, the service cost component of the
 Company&#x2019;s net periodic benefit costs is reported in
 &#x201C;Operations and Maintenance&#x201D; in the &#x201C;Operating
 Expenses&#x201D; section of the Consolidated Statements of Earnings
 while the other components of net periodic benefit costs are
 reported in the &#x201C;Other Expense (Income), net&#x201D; section
 of the Consolidated Statements of Earnings. Prior to adoption, the
 Company reported all components of its net periodic benefit costs
 in &#x201C;Operations and Maintenance&#x201D; in the &#x201C;Operating
 Expenses&#x201D; section of the Consolidated Statements of Earnings.
 The change in presentation for the quarter ended March&#xA0;31,
 2018 resulted in a reduction of &#x201C;Operations and
 Maintenance&#x201D; and an increase in &#x201C;Other Expense
 (Income), net&#x201D; on the Consolidated Statements of Earnings for
 the prior period. There are $1.5&#xA0;million and $1.6&#xA0;million
 of <font style="WHITE-SPACE: nowrap">non-service</font> cost net
 periodic benefit costs reported in &#x201C;Other Expense (Income),
 net for the three months ended March&#xA0;31, 2018 and
 March&#xA0;31, 2017, respectively, net of amounts deferred as
 regulatory assets for future recovery.</font></p>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeTaxPolicyTextBlock', window );">Income Taxes</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Income Taxes &#x2013;</b>
 The Company is subject to Federal and State income taxes as well as
 various other business taxes. This process involves estimating the
 Company&#x2019;s current tax liabilities as well as assessing
 temporary and permanent differences resulting from the timing of
 the deductions of expenses and recognition of taxable income for
 tax and book accounting purposes. These temporary differences
 result in deferred tax assets and liabilities, which are included
 in the Company&#x2019;s Consolidated Balance Sheets. The Company
 accounts for income tax assets, liabilities and expenses in
 accordance with the FASB Codification guidance on Income Taxes. The
 Company classifies penalty and interest expense related to income
 tax liabilities as income tax expense and interest expense,
 respectively, in the Consolidated Statements of
 Earnings.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Provisions for income taxes
 are calculated in each of the jurisdictions in which the Company
 operates for each period for which a statement of earnings is
 presented. The Company accounts for income taxes in accordance with
 the FASB Codification guidance on Income Taxes, which requires an
 asset and liability approach for the financial accounting and
 reporting of income taxes. Significant judgments and estimates are
 required in determining the current and deferred tax assets and
 liabilities. The Company&#x2019;s current and deferred tax assets
 and liabilities reflect its best assessment of estimated future
 taxes to be paid. In accordance with the FASB Codification, the
 Company periodically assesses the realization of its deferred tax
 assets and liabilities and adjusts the income tax provision, the
 current tax liability and deferred taxes in the period in which the
 facts and circumstances which gave rise to the revision become
 known.</font></p>
 </div><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsPolicyTextBlock', window );">Cash and Cash Equivalents</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Cash and Cash
 Equivalents &#x2013;</b> Cash and Cash Equivalents includes all cash
 and cash equivalents to which the Company has legal title. Cash
 equivalents include short-term investments with original maturities
 of three months or less and interest bearing deposits. The
 Company&#x2019;s cash and cash equivalents are held at financial
 institutions and at times may exceed federally insured limits. The
 Company has not experienced any losses in such accounts. Under the
 Independent System Operator&#x2014;New England <font style="WHITE-SPACE: nowrap">(ISO-NE)</font> Financial Assurance Policy
 (Policy), Unitil&#x2019;s subsidiaries Unitil Energy, Fitchburg and
 Unitil Power are required to provide assurance of their ability to
 satisfy their obligations to <font style="WHITE-SPACE: nowrap">ISO-NE.</font> Under this Policy,
 Unitil&#x2019;s subsidiaries provide cash deposits covering
 approximately <font style="WHITE-SPACE: nowrap">2-1/2</font> months
 of outstanding obligations, less credit amounts that are based on
 the Company&#x2019;s credit rating. As of March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017, the Unitil
 subsidiaries had deposited $3.3&#xA0;million, $2.6&#xA0;million and
 $2.9&#xA0;million, respectively to satisfy their <font style="WHITE-SPACE: nowrap">ISO-NE</font> obligations. In addition,
 Northern Utilities has cash margin deposits to satisfy requirements
 for its natural gas hedging program. There were no cash margin
 deposits at Northern Utilities as of March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017.</font></p>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_AllowanceForDoubtfulAccountsPolicyTextBlock', window );">Allowance for Doubtful Accounts</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Allowance for Doubtful
 Accounts &#x2013;</b> The Company recognizes a provision for
 doubtful accounts each month based upon the Company&#x2019;s
 experience in collecting electric and gas utility service accounts
 receivable in prior years. At the end of each month, an analysis of
 the delinquent receivables is performed which takes into account an
 assumption about the cash recovery of delinquent receivables. The
 analysis also calculates the amount of <font style="WHITE-SPACE: nowrap">written-off</font> receivables that are
 recoverable through regulatory rate reconciling mechanisms. The
 Company&#x2019;s distribution utilities are authorized by regulators
 to recover the costs of their energy commodity portion of bad debts
 through rate mechanisms. Also, the electric and gas divisions of
 Fitchburg are authorized to recover through rates past due amounts
 associated with hardship accounts that are protected from
 <font style="WHITE-SPACE: nowrap">shut-off.</font> Evaluating the
 adequacy of the Allowance for Doubtful Accounts requires judgment
 about the assumptions used in the analysis. It has been the
 Company&#x2019;s experience that the assumptions it has used in
 evaluating the adequacy of the Allowance for Doubtful Accounts have
 proven to be reasonably accurate.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Allowance for Doubtful
 Accounts as of March&#xA0;31, 2018, March&#xA0;31, 2017 and
 December&#xA0;31, 2017, which are included in Accounts Receivable,
 net on the accompanying unaudited consolidated balance sheets, was
 as follows:</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="82%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>($
 millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="10"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Allowance for Doubtful
 Accounts</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy', window );">Accrued Revenue</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Accrued Revenue</b>
 &#x2013; Accrued Revenue includes the current portion of Regulatory
 Assets and unbilled revenues. The following table shows the
 components of Accrued Revenue as of March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="82%"></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 100pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Accrued
 Revenue ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Regulatory Assets &#x2013;
 Current</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>34.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">32.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">39.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Unbilled
 Revenues</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">13.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Accrued
 Revenue</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>45.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">41.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">53.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ReceivablesPolicyTextBlock', window );">Exchange Gas Receivable</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Exchange Gas
 Receivable</b> &#x2013; Northern Utilities and Fitchburg have gas
 exchange and storage agreements whereby natural gas purchases
 during the months of April through October are delivered to a third
 party. The third party delivers natural gas back to the Company
 during the months of November through March. The exchange and
 storage gas volumes are recorded at weighted average cost. The
 following table shows the components of Exchange Gas Receivable as
 of March&#xA0;31, 2018, March&#xA0;31, 2017 and December&#xA0;31,
 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="81%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 127pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Exchange Gas
 Receivable ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Northern
 Utilities</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Fitchburg</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Exchange Gas
 Receivable</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InventoryPolicyTextBlock', window );">Gas Inventory</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Gas Inventory</b>
 &#x2013; The Company uses the weighted average cost methodology to
 value natural gas inventory. The following table shows the
 components of Gas Inventory as of March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="80%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 89pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas
 Inventory ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Natural Gas</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Propane</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Liquefied Natural
 Gas&#xA0;&amp; Other</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Gas
 Inventory</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock', window );">Utility Plant</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Utility Plant
 &#x2013;</b> The cost of additions to Utility Plant and the cost of
 renewals and betterments are capitalized. Cost consists of labor,
 materials, services and certain indirect construction costs,
 including an allowance for funds used during construction (AFUDC).
 The costs of current repairs and minor replacements are charged to
 appropriate operating expense accounts. The original cost of
 utility plant retired or otherwise disposed of is charged to the
 accumulated provision for depreciation. The Company includes in its
 mass asset depreciation rates, which are periodically reviewed as
 part of its ratemaking proceedings, cost of removal amounts to
 provide for future negative salvage value. At March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017, the Company
 estimates that the cost of removal amounts, which are recorded on
 the Consolidated Balance Sheets in Cost of Removal Obligations are
 $86.6&#xA0;million, $79.7&#xA0;million, and $84.3&#xA0;million,
 respectively.</font></p>
 </div><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesPolicyTextBlock', window );">Regulatory Accounting</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Regulatory Accounting
 &#x2013;</b> The Company&#x2019;s principal business is the
 distribution of electricity and natural gas by the three
 distribution utilities: Unitil Energy, Fitchburg and Northern
 Utilities. Unitil Energy and Fitchburg are subject to regulation by
 the FERC. Fitchburg is also regulated by the Massachusetts
 Department of Public Utilities (MDPU), Unitil Energy is regulated
 by the New Hampshire Public Utilities Commission (NHPUC) and
 Northern Utilities is regulated by the Maine Public Utilities
 Commission (MPUC) and NHPUC. Granite State, the Company&#x2019;s
 natural gas transmission pipeline, is regulated by the FERC.
 Accordingly, the Company uses the Regulated Operations guidance as
 set forth in the FASB Codification. The Company has recorded
 Regulatory Assets and Regulatory Liabilities which will be
 recovered from customers, or applied for customer benefit, in
 accordance with rate provisions approved by the applicable public
 utility regulatory commission.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="79%"></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 181pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Regulatory
 Assets consist of the following ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Retirement
 Benefits</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>85.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">75.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">84.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Energy Supply&#xA0;&amp;
 Other Rate Adjustment Mechanisms</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>31.9</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">27.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">36.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Deferred Storm
 Charges</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>8.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">8.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Environmental</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>9.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income Taxes</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>6.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>5.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Regulatory
 Assets</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>145.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">135.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">149.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Current Portion of
 Regulatory Assets</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="VERTICAL-ALIGN: baseline; POSITION: relative; BOTTOM: 0.8ex">(1)</sup></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>34.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">32.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">39.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Regulatory Assets
 &#x2013; noncurrent</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>111.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">103.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">109.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 6px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" border="0">
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="VERTICAL-ALIGN: baseline; POSITION: relative; BOTTOM: 0.8ex">(1)</sup></font></b></font></td>
 <td valign="top" align="left">
 <p align="left"><font style="FONT-FAMILY: Times New Roman" size="2">Reflects amounts included in Accrued Revenue, discussed above,
 on the Company&#x2019;s Consolidated Balance Sheets.</font></p>
 </td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="80%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 194pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Regulatory
 Liabilities consist of the following ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Rate Adjustment
 Mechanisms</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Gas Pipeline Refund (Note
 6)</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income Taxes (Note
 8)</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>49.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">48.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Regulatory
 Liabilities</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>60.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">13.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">58.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Current Portion of
 Regulatory Liabilities</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.9</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">12.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Regulatory Liabilities
 &#x2013; noncurrent</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>49.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">48.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Generally, the Company
 receives a return on investment on its regulated assets for which a
 cash outflow has been made. Included in Regulatory Assets as of
 March&#xA0;31, 2018 are $0.5&#xA0;million of deferred storm charges
 to be recovered over the year and $6.5&#xA0;million of
 environmental costs, rate case costs and other expenditures to be
 recovered over varying periods in the next seven years. Regulators
 have authorized recovery of these expenditures, but without a
 return. Regulatory commissions can reach different conclusions
 about the recovery of costs, which can have a material impact on
 the Company&#x2019;s Consolidated Financial Statements. The Company
 believes it is probable that its regulated distribution and
 transmission utilities will recover their investments in long-lived
 assets, including regulatory assets. If the Company, or a portion
 of its assets or operations, were to cease meeting the criteria for
 application of these accounting rules, accounting standards for
 businesses in general would become applicable and immediate
 recognition of any previously deferred costs, or a portion of
 deferred costs, would be required in the year in which the criteria
 are no longer met, if such deferred costs were not recoverable in
 the portion of the business that continues to meet the criteria for
 application of the FASB Codification topic on Regulated Operations.
 If unable to continue to apply the FASB Codification provisions for
 Regulated Operations, the Company would be required to apply the
 provisions for the Discontinuation of Rate-Regulated Accounting
 included in the FASB Codification. In the Company&#x2019;s opinion,
 its regulated operations will be subject to the FASB Codification
 provisions for Regulated Operations for the foreseeable
 future.</font></p>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DerivativesPolicyTextBlock', window );">Derivatives</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Derivatives &#x2013;</b>
 The Company&#x2019;s regulated energy subsidiaries enter into energy
 supply contracts to serve their electric and gas customers. The
 Company follows a procedure for determining whether each contract
 qualifies as a derivative instrument under the guidance provided by
 the FASB Codification on Derivatives and Hedging. For each
 contract, the Company reviews and documents the key terms of the
 contract. Based on those terms and any additional relevant
 components of the contract, the Company determines and documents
 whether the contract qualifies as a derivative instrument as
 defined in the FASB Codification. The Company has determined that
 none of its energy supply contracts, other than the regulatory
 approved hedging program, described below, qualifies as a
 derivative instrument under the guidance set forth in the FASB
 Codification.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company has managed a
 regulatory approved hedging program for Northern Utilities, which
 is designed to fix or cap a portion of its gas supply costs for the
 coming years of service through the purchase of European call
 option contracts. Any gains or losses resulting from these option
 contracts are passed through to customers directly through Northern
 Utilities&#x2019; Cost of Gas Adjustment Clause. The fair value of
 these derivatives is determined using Level&#xA0;2 inputs
 (valuations based on quoted prices in markets that are not active
 or for which all significant inputs are observable, either directly
 or indirectly), specifically based on the NYMEX closing prices for
 outstanding contracts as of the balance sheet date. As a result of
 the ratemaking process, the Company records gains and losses
 resulting from the change in fair value of the derivatives as
 regulatory liabilities or assets, then reclassifies these gains or
 losses into Cost of Gas Sales when the gains and losses are passed
 through to customers through the Cost of Gas Adjustment Clause.
 Currently, there are no active transactions and the Company has
 proposed to regulators to discontinue the program. This matter
 remains pending.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">As of March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017 the Company had
 zero, 1.2&#xA0;billion and 0.6&#xA0;billion cubic feet (BCF),
 respectively, outstanding in natural gas futures and options
 contracts under its hedging program.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">As of March&#xA0;31, 2018
 and March&#xA0;31, 2017 and December&#xA0;31, 2017, the
 Company&#x2019;s derivatives that are not designated as hedging
 instruments under FASB ASC <font style="WHITE-SPACE: nowrap">815-20</font> have a fair value of $0,
 $0.3&#xA0;million and less than $0.1&#xA0;million,
 respectively.</font></p>
 </div><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MarketableSecuritiesPolicy', window );">Investments in Marketable Securities</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Investments in
 Marketable Securities</b> &#x2013; The Company has a trust through
 which it invests in a variety of equity and fixed income mutual
 funds. These funds are intended to satisfy obligations under the
 Company&#x2019;s Supplemental Executive Retirement Plan
 (&#x201C;SERP&#x201D;) (See further discussion of the SERP in Note
 9.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">At March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017, the fair value of
 the Company&#x2019;s investments in these trading securities, which
 are recorded on the Consolidated Balance Sheets in Other Assets,
 were $5.1&#xA0;million, $3.3 and $3.6&#xA0;million, respectively,
 as shown in the table below. These investments are valued based on
 quoted prices from active markets and are categorized in
 Level&#xA0;1 as they are actively traded and no valuation
 adjustments have been applied. Changes in the fair value of these
 investments are recorded in Other Expense, net.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="82%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 162pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Fair Value
 of Marketable Securities ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Equity Funds</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.9</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Fixed Income
 Funds</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Cash and
 Equivalents</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Marketable
 Securities</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>5.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SupplyCommitmentPolicyTextBlock', window );">Energy Supply Obligations</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Energy Supply
 Obligations &#x2013;</b> The following discussion and table
 summarize the nature and amounts of the items recorded as Energy
 Supply Obligations (current portion) and Other Noncurrent
 Liabilities (noncurrent portion) on the Company&#x2019;s
 Consolidated Balance Sheets.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="80%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 132pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Energy
 Supply Obligations ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Current:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Exchange Gas
 Obligation</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Renewable Energy Portfolio
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 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Power Supply Contract
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 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Energy Supply
 Obligations &#x2013; Current</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Long-Term:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Power Supply Contract
 Divestitures</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Energy Supply
 Obligations</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>8.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
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 <td>&#xA0;</td>
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 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">Exchange Gas Obligation
 &#x2013; As discussed above, Northern Utilities enters into gas
 exchange agreements under which Northern Utilities releases certain
 natural gas pipeline and storage assets, resells the natural gas
 storage inventory to an asset manager and subsequently repurchases
 the inventory over the course of the natural gas heating season at
 the same price at which it sold the natural gas inventory to the
 asset manager. The gas inventory related to these agreements is
 recorded in Exchange Gas Receivable on the Company&#x2019;s
 Consolidated Balance Sheets while the corresponding obligations are
 recorded in Energy Supply Obligations.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Renewable Energy Portfolio
 Standards &#x2013; Renewable Energy Portfolio Standards (RPS)
 require retail electricity suppliers, including public utilities,
 to demonstrate that required percentages of their sales are met
 with power generated from certain types of resources or
 technologies. Compliance is demonstrated by purchasing and retiring
 Renewable Energy Certificates (REC) generated by facilities
 approved by the state as qualifying for REC treatment. Unitil
 Energy and Fitchburg purchase RECs in compliance with RPS
 legislation in New Hampshire and Massachusetts for supply provided
 to default service customers. RPS compliance costs are a supply
 cost that is recovered in customer default service rates. Unitil
 Energy and Fitchburg collect RPS compliance costs from customers
 throughout the year and demonstrate compliance for each calendar
 year on the following July 1. Due to timing differences between
 collection of revenue from customers and payment of REC costs to
 suppliers, Unitil Energy and Fitchburg typically maintain accrued
 revenue for RPS compliance which is recorded in Accrued Revenue
 with a corresponding liability in Energy Supply Obligations on the
 Company&#x2019;s Consolidated Balance Sheets.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Fitchburg has entered into
 long-term renewable contracts for electric energy and/or renewable
 energy credits pursuant to Massachusetts legislation, specifically,
 the Act Relative to Green Communities of 2008 and the Act Relative
 to Competitively Priced Electricity (2012)&#xA0;in the
 Commonwealth, and the MDPU&#x2019;s regulations implementing the
 legislation. The generating facilities associated with three of
 these contracts have been constructed and are operating. A recent
 round of long-term renewable energy procurements was conducted
 during 2016 and several contracts were finalized and submitted to
 MDPU for approval in 2017. These approvals remain pending.
 Additional procurements are expected in compliance with the Act to
 Promote Energy Diversity (2016). Fitchburg recovers the costs
 associated with long-term renewable contracts on a fully
 reconciling basis through a MDPU-approved cost recovery
 mechanism.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Power Supply Contract
 Divestitures &#x2013; Unitil Energy&#x2019;s and Fitchburg&#x2019;s
 customers are entitled to purchase their electric or natural gas
 supplies from third-party suppliers. In connection with the
 implementation of retail choice, Unitil Power, which formerly
 functioned as the wholesale power supply provider for Unitil
 Energy, and Fitchburg divested their long-term power supply
 contracts through the sale of the entitlements to the electricity
 sold under those contracts. Unitil Energy and Fitchburg recover in
 their rates all the costs associated with the divestiture of their
 power supply portfolios and have secured regulatory approval from
 the NHPUC and MDPU, respectively, for the recovery of power
 supply-related stranded costs. The obligations related to these
 divestitures are recorded in Energy Supply Obligations (current
 portion) and Other Noncurrent Liabilities (noncurrent portion) on
 the Company&#x2019;s Consolidated Balance Sheets with corresponding
 regulatory assets recorded in Accrued Revenue (current portion) and
 Regulatory Assets (noncurrent portion).</font></p>
 </div><span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_RecentlyIssuedAccountingPronouncementsPolicyTextBlock', window );">Recently Issued Pronouncements</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Recently Issued
 Pronouncements</b> &#x2013; In March 2017, the FASB issued ASU
 <font style="WHITE-SPACE: nowrap">No.&#xA0;2017-07,</font>
 &#x201C;Compensation &#x2013; Retirement Benefits (Topic 715) which
 amends the existing guidance relating to the presentation of net
 periodic pension cost and net periodic other post-retirement
 benefit costs. On a retrospective basis, the amendment requires an
 employer to separate the service cost component from the other
 components of net benefit cost and provides explicit guidance on
 how to present the service cost component and other components in
 the income statement. In addition, on a prospective basis, the ASU
 limits the component of net benefit cost eligible to be capitalized
 to service costs. The ASU became effective for the Company on
 January&#xA0;1, 2018. The change in capitalization of retirement
 benefits did not have a material impact on the Company&#x2019;s
 Consolidated Financial Statements.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 6px">
 &#xA0;</p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">In May 2014, the FASB
 issued ASU <font style="WHITE-SPACE: nowrap">No.&#xA0;2014-09,</font> &#x201C;Revenue from
 Contracts with Customers (Topic 606)&#x201D;, which amends existing
 revenue recognition guidance, effective January&#xA0;1, 2018. The
 objective of the new standard is to provide a single, comprehensive
 revenue recognition model for all contracts with customers to
 improve comparability across entities, industries, jurisdictions,
 and capital markets and to provide more useful information to users
 of financial statements through improved and expanded disclosure
 requirements.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The majority of the
 Company&#x2019;s revenue, including energy provided to customers, is
 from tariff offerings that provide natural gas or electricity
 without a defined contractual term. For such arrangements, the
 Company generally expects that the revenue from contracts with
 these customers will continue to be equivalent to the electricity
 or natural gas supplied and billed in that period (including
 unbilled revenues) and the adoption of the new guidance will not
 result in a significant shift in the timing of revenue recognition
 for such sales.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company used the
 modified retrospective method when adopting the new standard on
 January&#xA0;1, 2018. The new guidance did not have a material
 impact to the Consolidated Financial Statements. (See
 &#x201C;Utility Revenue Recognition&#x201D; and &#x201C;Other
 Operating Revenue &#x2013; <font style="WHITE-SPACE: nowrap">Non-regulated&#x201D;</font>
 above.)</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">In February 2016, the FASB
 issued ASU <font style="WHITE-SPACE: nowrap">2016-02,</font>
 Leases, Topic 842, which amends the existing guidance relating to
 the definition of a lease, recognition of lease assets and lease
 liabilities on the balance sheet, and the disclosure of key
 information about leasing arrangements.&#xA0;In November 2017, the
 FASB tentatively decided to amend the new leasing guidance such
 that entities may elect not to restate their comparative periods in
 the period of adoption. Under the new standard, all lessees must
 recognize an asset and liability on the balance sheet. Operating
 leases were previously not recognized on the balance
 sheet.&#xA0;The ASU will be effective for the Company on
 January&#xA0;1, 2019, with early adoption permitted. The Company
 plans to adopt this guidance in the first quarter of 2019.&#xA0;The
 Company expects this ASU to increase lease assets and lease
 liabilities on the Consolidated Balance Sheets and does not expect
 the guidance will have a material impact on the Consolidated
 Statements of Income, Statements of Cash Flows and lease
 disclosures.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">In January 2016, the FASB
 issued Accounting Standards Update (ASU) <font style="WHITE-SPACE: nowrap">2016-01</font> which addresses certain
 aspects of recognition, measurement, presentation and disclosure of
 financial instruments. A financial instrument is defined as cash,
 evidence of ownership interest in a company or other entity, or a
 contract that both: (i)&#xA0;imposes on one entity a contractual
 obligation either to deliver cash or another financial instrument
 to a second entity or to exchange other financial instruments on
 potentially unfavorable terms with the second entity and
 (ii)&#xA0;conveys to that second entity a contractual right either
 to receive cash or another financial instruments from the first
 entity or to exchange other financial instruments on potentially
 favorable terms with the first entity. The ASU became effective for
 the Company on January&#xA0;1, 2018 and it did not have a material
 impact on the Company&#x2019;s Consolidated Financial
 Statements.</font></p>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Other than the
 pronouncements discussed above, there are no recently issued
 pronouncements that the Company has not already adopted or that
 have a material impact on the Company.</font></p>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SubsequentEventsPolicyPolicyTextBlock', window );">Subsequent Events</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Subsequent Events</b>
 &#x2013; The Company evaluates all events or transactions through
 the date of the related filing. During the period through the date
 of this filing, the Company did not have any material subsequent
 events that would result in adjustment to or disclosure in its
 Consolidated Financial Statements.</font></p>
 </div><span></span>
</td>
</tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(1))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 305<br> -SubTopic 10<br> -Section 05<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6375392&amp;loc=d3e26790-107797<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=98513485&amp;loc=d3e4273-108586<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18780-107790<br></p></div>
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<td><strong> Balance Type:</strong></td>
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</tr>
<tr>
<td><strong> Period Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for its derivative instruments and hedging activities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18780-107790<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 815<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=84234895&amp;loc=d3e41620-113959<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08.(n))<br> -URI http://asc.fasb.org/extlink&amp;oid=26873400&amp;loc=d3e23780-122690<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 815<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=84234895&amp;loc=SL5579240-113959<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 815<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1A<br> -URI http://asc.fasb.org/extlink&amp;oid=84234895&amp;loc=SL5579245-113959<br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 815<br> -SubTopic 10<br> -Section 50<br> -Paragraph 7<br> -URI http://asc.fasb.org/extlink&amp;oid=84234895&amp;loc=d3e41675-113959<br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 815<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=84234895&amp;loc=d3e41638-113959<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18780-107790<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 19<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32840-109319<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 30<br> -Section 05<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=65884525&amp;loc=d3e40913-109327<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 954<br> -SubTopic 740<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6491622&amp;loc=d3e9504-115650<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 17<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32809-109319<br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 45<br> -Paragraph 25<br> -URI http://asc.fasb.org/extlink&amp;oid=84176650&amp;loc=d3e32247-109318<br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -URI http://asc.fasb.org/extlink&amp;oid=84176650&amp;loc=d3e32280-109318<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxPolicyTextBlock</td>
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<td><strong> Period Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 330<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=66092785&amp;loc=d3e4492-108314<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.6(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18780-107790<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 330<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=66092785&amp;loc=d3e4556-108314<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6361739&amp;loc=d3e7789-107766<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InventoryPolicyTextBlock</td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_MarketableSecuritiesPolicy">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for investments in debt and equity securities that have readily determinable fair values (marketable securities). At a minimum, the disclosure might address accounting policies for investments classified as trading, available for sale, or held to maturity and may include how the entity determines whether impairments of available for sale or held to maturity investments are other than temporary, how the fair values of the entity's securities are determined, and the entity's accounting treatment for transfers between investment categories.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(6))<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(1))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 5.M)<br> -URI http://asc.fasb.org/extlink&amp;oid=65877573&amp;loc=d3e87990-122713<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(12))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18780-107790<br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section S50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6381980&amp;loc=d3e87707-122711<br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 320<br> -Section 50<br> -Paragraph 5<br> -URI http://asc.fasb.org/extlink&amp;oid=75019621&amp;loc=d3e62652-112803<br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(2))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(5))<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_MarketableSecuritiesPolicy</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Period Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for plans, other than pension plans, that provide postretirement benefits (including both defined benefit and defined contribution plans). This accounting policy may address (1) the types of plans sponsored by the entity, and the benefits provided by each plan (2) groups that participate in (or are covered by) each plan (3) how plan assets, liabilities and expenses are measured, including the use of any actuaries and (4) significant assumptions used by the entity to value plan assets and liabilities and how such assumptions are derived.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 80<br> -URI http://asc.fasb.org/subtopic&amp;trid=2235144<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 70<br> -URI http://asc.fasb.org/subtopic&amp;trid=2235116<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18780-107790<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 60<br> -URI http://asc.fasb.org/subtopic&amp;trid=2235172<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr>
<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, basis of assets, depreciation and depletion methods used, including composite deprecation, estimated useful lives, capitalization policy, accounting treatment for costs incurred for repairs and maintenance, capitalized interest and the method it is calculated, disposals and impairments.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18780-107790<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.13(a))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr>
<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<tr>
<td><strong> Period Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for public utilities. Examples include a discussion about the scope criteria and appropriateness for and extent of the application of generally accepted accounting principles related to accounting for the effects of certain types of regulation (may include identification of specific business units). Other examples of the disclosures may include: descriptions of the form and economic effects of regulation (for example, but not limited to, recording of regulatory assets and liabilities to the rate setting process); statement about periodic assessments of periodic assessments of generally accepted accounting principles related to accounting for the effects of certain types of regulation; information regarding amortization of and return on regulatory assets and liabilities, including the remaining amounts and recovery or settlement periods; accounting for changes to recovery estimates; AFUDC, plant abandonment's and plant disallowances.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18780-107790<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 10<br> -Section 05<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=79984601&amp;loc=d3e39995-110364<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>nonnum:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
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</tr>
<tr>
<td><strong> Period Type:</strong></td>
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</tr>
</table></div>
</div></td></tr>
</table>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for trade and other accounts receivable, and finance, loan and lease receivables, including those classified as held for investment and held for sale. This disclosure may include (1) the basis at which such receivables are carried in the entity's statements of financial position (2) how the level of the valuation allowance for receivables is determined (3) when impairments, charge-offs or recoveries are recognized for such receivables (4) the treatment of origination fees and costs, including the amortization method for net deferred fees or costs (5) the treatment of any premiums or discounts or unearned income (6) the entity's income recognition policies for such receivables, including those that are impaired, past due or placed on nonaccrual status and (7) the treatment of foreclosures or repossessions (8) the nature and amount of any guarantees to repurchase receivables.</p></div>
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<tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18823-107790<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 605<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 13.B.Q1)<br> -URI http://asc.fasb.org/extlink&amp;oid=65893310&amp;loc=d3e214044-122780<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18780-107790<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18726-107790<br></p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for reporting subsequent events.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18780-107790<br></p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for treatment of receivables that are billable but have not been billed as of the balance sheet date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=84173941&amp;loc=d3e5033-111524<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18780-107790<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=84159169&amp;loc=d3e10133-111534<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section 50<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=84173941&amp;loc=d3e5093-111524<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(3))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -URI http://asc.fasb.org/extlink&amp;oid=84173941&amp;loc=d3e5144-111524<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policies and anticipated effects of regulatory rulings and on rate-setting regarding revenues and expenses incurred and recovered, including billed and unbilled revenues, revenues collected subject to refund, taxes collected from customers and remitted to governmental authorities, and postretirement benefits.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 10<br> -Section 05<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=79984601&amp;loc=d3e40187-110364<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84158767&amp;loc=d3e18780-107790<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Allowance For Doubtful Accounts, Policy.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Description of the Company and its subsidiaries businesses.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Recently Issued Accounting Pronouncements, Policy.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Nature and amounts of items recorded as Energy Supply Obligations.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6785396592">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ComponentsOfGasOperatingRevenueAndElectricOperatingRevenueTableTextBlock', window );">Components of Gas and Electric Operating Revenue</a></td>
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 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">In the following tables,
 revenue is classified by the types of goods/services rendered and
 market/customer type. The lower revenues reported in the first
 quarter of 2018 to account for the reduction in the corporate
 income tax rate under the Tax Cuts and Jobs Act of 2017 (TCJA) are
 shown separately in the table below for informational
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 Electric Operating Revenues ($ millions):</b></font></p>
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 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Electric</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Billed and Unbilled
 Revenue:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Residential</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">35.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">34.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">70.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">C&amp;I</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">50.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">24.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">74.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Revenue Reductions &#x2013;
 TCJA</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(1.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(0.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(2.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 7em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Billed and Unbilled
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">91.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">61.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">153.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Rate Adjustment Mechanism
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(4.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(4.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(8.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Gas and Electric
 Operating Revenues</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>87.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>57.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>144.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="FONT-SIZE: 1pt">
 <td height="16"></td>
 <td height="16" colspan="12"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended&#xA0;March&#xA0;31,&#xA0;2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 171pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas and
 Electric Operating Revenues ($ millions):</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Electric</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Billed and Unbilled
 Revenue:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Residential</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">30.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">27.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">58.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">C&amp;I</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">42.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">19.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">61.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 7em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Billed and Unbilled
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">78.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">49.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">127.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Rate Adjustment Mechanism
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(4.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(3.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Gas and Electric
 Operating Revenues</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>74.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>49.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>124.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock', window );">Schedule of Other Operating Revenues and Operating Expenses</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">If ASU <font style="WHITE-SPACE: nowrap">2014-09</font> had been adopted retroactively
 for the three months ended March&#xA0;31, 2017, the result would
 have been corresponding reductions of $0.3&#xA0;million in both
 &#x201C;Other&#x201D; in in the &#x201C;Operating Revenues&#x201D;
 section of the Consolidated Statements of Earnings and
 &#x201C;Operation and Maintenance&#x201D; in the &#x201C;Operating
 Expenses&#x201D; section of the Company&#x2019;s Consolidated
 Statements of Earnings as shown in the tables below.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="72%"></td>
 <td valign="bottom" width="11%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="11%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended&#xA0;March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>As
 Reported</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" nowrap="nowrap" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>If ASU <font style="WHITE-SPACE: nowrap">2014-09</font><br />
 Had Been in</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Effect</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 134pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Other
 Operating Revenues ($ millions):</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Usource Contract
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Revenue Sharing
 Payments</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Other Operating
 Revenues</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="FONT-SIZE: 1pt">
 <td height="16"></td>
 <td height="16" colspan="8"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended&#xA0;March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>As
 Reported</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>If ASU <font style="WHITE-SPACE: nowrap">2014-09</font><br />
 Had Been in</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Effect</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 169pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Operation
 and Maintenance Expense ($ millions):</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Operation and Maintenance
 Expense</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>17.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_AllowanceForDoubtfulAccountsTableTextBlock', window );">Allowance for Doubtful Accounts Included in Accounts Receivable Net</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The Allowance for Doubtful
 Accounts as of March&#xA0;31, 2018, March&#xA0;31, 2017 and
 December&#xA0;31, 2017, which are included in Accounts Receivable,
 net on the accompanying unaudited consolidated balance sheets, was
 as follows:</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="82%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>($
 millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="10"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Allowance for Doubtful
 Accounts</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_UnbilledAccountsReceivableTableTextBlock', window );">Components of Accrued Revenue</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The following table shows
 the components of Accrued Revenue as of March&#xA0;31, 2018,
 March&#xA0;31, 2017 and December&#xA0;31, 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="82%"></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 100pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Accrued
 Revenue ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Regulatory Assets &#x2013;
 Current</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>34.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">32.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">39.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Unbilled
 Revenues</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">13.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Accrued
 Revenue</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>45.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">41.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">53.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ScheduleOfOtherAccountsReceivableTableTextBlock', window );">Components of Exchange Gas Receivable</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The following table shows
 the components of Exchange Gas Receivable as of March&#xA0;31,
 2018, March&#xA0;31, 2017 and December&#xA0;31, 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="81%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 127pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Exchange Gas
 Receivable ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Northern
 Utilities</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Fitchburg</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Exchange Gas
 Receivable</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfUtilityInventoryTextBlock', window );">Components of Gas Inventory</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">The Company uses the
 weighted average cost methodology to value natural gas inventory.
 The following table shows the components of Gas Inventory as of
 March&#xA0;31, 2018, March&#xA0;31, 2017 and December&#xA0;31,
 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="80%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 89pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas
 Inventory ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Natural Gas</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Propane</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Liquefied Natural
 Gas&#xA0;&amp; Other</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Gas
 Inventory</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfRegulatoryAssetsTextBlock', window );">Regulatory Assets</a></td>
<td class="text"><div>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="79%"></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 181pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Regulatory
 Assets consist of the following ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Retirement
 Benefits</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>85.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">75.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">84.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Energy Supply&#xA0;&amp;
 Other Rate Adjustment Mechanisms</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>31.9</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">27.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">36.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Deferred Storm
 Charges</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>8.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">8.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Environmental</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>9.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income Taxes</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>6.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>5.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Regulatory
 Assets</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>145.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">135.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">149.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Current Portion of
 Regulatory Assets</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="VERTICAL-ALIGN: baseline; POSITION: relative; BOTTOM: 0.8ex">(1)</sup></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>34.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">32.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">39.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Regulatory Assets
 &#x2013; noncurrent</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>111.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">103.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">109.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 6px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" border="0">
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="VERTICAL-ALIGN: baseline; POSITION: relative; BOTTOM: 0.8ex">(1)</sup></font></b></font></td>
 <td valign="top" align="left">
 <p align="left"><font style="FONT-FAMILY: Times New Roman" size="2">Reflects amounts included in Accrued Revenue, discussed above,
 on the Company&#x2019;s Consolidated Balance Sheets.</font></p>
 </td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock', window );">Regulatory Liabilities</a></td>
<td class="text"><div>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="80%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 194pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Regulatory
 Liabilities consist of the following ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Rate Adjustment
 Mechanisms</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Gas Pipeline Refund (Note
 6)</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income Taxes (Note
 8)</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>49.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">48.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Regulatory
 Liabilities</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>60.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">13.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">58.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Current Portion of
 Regulatory Liabilities</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.9</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">12.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Regulatory Liabilities
 &#x2013; noncurrent</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>49.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">48.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MarketableSecuritiesTextBlock', window );">Fair Value of Marketable Securities</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">Changes in the fair value
 of these investments are recorded in Other Expense, net.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="82%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 162pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Fair Value
 of Marketable Securities ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Equity Funds</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.9</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Fixed Income
 Funds</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Cash and
 Equivalents</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Marketable
 Securities</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>5.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SupplyCommitmentTableTextBlock', window );">Components of Energy Supply Obligations</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The following discussion
 and table summarize the nature and amounts of the items recorded as
 Energy Supply Obligations (current portion) and Other Noncurrent
 Liabilities (noncurrent portion) on the Company&#x2019;s
 Consolidated Balance Sheets.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="80%"></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="4%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 132pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Energy
 Supply Obligations ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Current:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Exchange Gas
 Obligation</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Renewable Energy Portfolio
 Standards</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Power Supply Contract
 Divestitures</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Energy Supply
 Obligations &#x2013; Current</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Long-Term:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Power Supply Contract
 Divestitures</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 5em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Energy Supply
 Obligations</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>8.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_MarketableSecuritiesTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=82896770&amp;loc=d3e26626-111562<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03.4)<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -Subparagraph (d)<br> -URI http://asc.fasb.org/extlink&amp;oid=82897076&amp;loc=d3e27232-111563<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=82896770&amp;loc=d3e26610-111562<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=82897076&amp;loc=d3e27161-111563<br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.2,12)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_MarketableSecuritiesTextBlock</td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of each detailed component of other operating costs and expenses that are applicable to sales and revenues, but not included in the cost of sales in the income statement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.3)<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<td style="white-space:nowrap;">us-gaap_ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of assets that are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 340<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=6499975&amp;loc=d3e44264-110382<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 715<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6501251&amp;loc=d3e52485-110419<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 340<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6499975&amp;loc=d3e44250-110382<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ScheduleOfRegulatoryAssetsTextBlock</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of regulatory liabilities. Detailed information about liabilities that result from rate actions of a regulator. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 405<br> -Section 25<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6500807&amp;loc=d3e48068-110394<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ScheduleOfUtilityInventoryTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of all information related to inventories for utilities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-05.6(a))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of arrangements in which the entity has committed resources to supply goods or services to a customer. May include identification of the goods or services to be furnished, identity of the purchasing party, pricing, effects on pricing for failing to deliver the [minimum] quantities required to be furnished, cancellation rights, and termination provisions.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(25))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Allowance for Doubtful Accounts, Table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Components of gas operating revenue and electric operating revenue.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Description of the components and amounts included in Exchange Gas Receivable.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Description of the components and amounts included in Accrued Revenue.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>DIVIDENDS DECLARED PER SHARE (Tables)<br></strong></div></th>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of information related to dividends declared, including paid and unpaid dividends.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<td>nonnum:textBlockItemType</td>
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<td>duration</td>
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</body>
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</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>34
<FILENAME>R20.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6936067216">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>SEGMENT INFORMATION (Tables)<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock', window );">Significant Segment Financial Data</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2">The following table
 provides significant segment financial data for the three months
 ended March&#xA0;31, 2018 and March&#xA0;31, 2017:</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="71%"></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">&#xA0;<font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Gas</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Electric</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Non-</b></font><br />
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Regulated</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Other</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1pt">
 <td height="8"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 168pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Three Months
 Ended March&#xA0;31, 2018 ($ millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Revenues:</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Billed and Unbilled
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>91.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>61.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>153.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Rate Adjustment Mechanism
 Revenue</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(4.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(4.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(8.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other Operating Revenue
 &#x2013; <font style="WHITE-SPACE: nowrap">Non-Regulated</font></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 2em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Operating
 Revenues</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>87.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>57.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>145.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Segment Profit
 (Loss)</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>12.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>3.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(0.4</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>15.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Identifiable Segment
 Assets</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>712.6</b></font></td>
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 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>481.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>42.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,244.3</b></font></td>
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 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Capital
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 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>3.6</b></font></td>
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 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>6.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
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 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
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 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
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 <tr style="FONT-SIZE: 1pt">
 <td height="8"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 <td height="8" colspan="4"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
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 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
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 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
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 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">74.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">49.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">126.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">641.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">442.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">42.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,134.4</font></td>
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 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">17.5</font></td>
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 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
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 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Identifiable Segment
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 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">714.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">476.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">44.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -URI http://asc.fasb.org/extlink&amp;oid=68060357&amp;loc=d3e8906-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 25<br> -URI http://asc.fasb.org/extlink&amp;oid=68060357&amp;loc=d3e8813-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 21<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=68060357&amp;loc=d3e8721-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=35741047&amp;loc=d3e13816-109267<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -URI http://asc.fasb.org/extlink&amp;oid=68060357&amp;loc=d3e8736-108599<br></p></div>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6922189680">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>DEBT AND FINANCING ARRANGEMENTS (Tables)<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
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 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="79%"></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>($
 millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Unitil
 Corporation:</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">6.33% Senior Notes, Due
 May&#xA0;1, 2022</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>20.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">3.70% Senior Notes, Due
 August&#xA0;1, 2026</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>30.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">30.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">30.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Unitil Energy First
 Mortgage Bonds:</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">5.24% Senior Secured Notes,
 Due March&#xA0;2, 2020</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">8.49% Senior Secured Notes,
 Due October&#xA0;14, 2024</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">6.96% Senior Secured Notes,
 Due September&#xA0;1, 2028</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>20.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">8.00% Senior Secured Notes,
 Due May&#xA0;1, 2031</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>15.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">6.32% Senior Secured Notes,
 Due September&#xA0;15, 2036</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>15.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Fitchburg:</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">6.75% Senior Notes, Due
 November&#xA0;30, 2023</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">6.79% Senior Notes, Due
 October&#xA0;15, 2025</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">3.52% Senior Notes, Due
 November&#xA0;1, 2027</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">7.37% Senior Notes, Due
 January&#xA0;15, 2029</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>12.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">12.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">12.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">5.90% Senior Notes, Due
 December&#xA0;15, 2030</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>15.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">7.98% Senior Notes, Due
 June&#xA0;1, 2031</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>14.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">14.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">14.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">4.32% Senior Notes, Due
 November&#xA0;1, 2047</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>15.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Northern
 Utilities:</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">6.95% Senior Notes, Due
 December&#xA0;3, 2018</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">5.29% Senior Notes, Due
 March&#xA0;2, 2020</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>16.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">25.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">25.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">3.52% Senior Notes, Due
 November&#xA0;1, 2027</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>20.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">7.72% Senior Notes, Due
 December&#xA0;3, 2038</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>50.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">50.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">50.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">4.42% Senior Notes, Due
 October&#xA0;15, 2044</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>50.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">50.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">50.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">4.32% Senior Notes, Due
 November&#xA0;1, 2047</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>30.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">30.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Granite
 State:</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">7.15% Senior Notes, Due
 December&#xA0;15, 2018</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>3.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">3.72% Senior Notes, Due
 November&#xA0;1, 2027</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>15.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Unitil Realty
 Corp.:</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">8.00% Senior Secured Notes,
 Due Through August&#xA0;1, 2017</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Long-Term
 Debt</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>396.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">336.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">409.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Unamortized Debt
 Issuance Costs</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>3.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Long-Term Debt, net
 of Unamortized Debt Issuance Costs</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>392.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">333.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">406.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Current
 Portion</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>29.8</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">30.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">29.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total Long-term Debt, Less
 Current Portion</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>363.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">303.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">376.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock', window );">Fair Value of Long Term Debt</a></td>
<td class="text"><div>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="79%"></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 38pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>($
 millions)</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Estimated Fair Value of
 Long-Term Debt</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>428.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">374.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">457.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfDebtTableTextBlock', window );">Borrowing Limits Amounts Outstanding and Amounts Available under Revolving Credit Facility</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;The following table
 details the borrowing limits, amounts outstanding and amounts
 available under the revolving Credit Facility as of March&#xA0;31,
 2018, March&#xA0;31, 2017 and December&#xA0;31, 2017:</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="79%"></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="3%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="10" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Revolving&#xA0;Credit&#xA0;Facility&#xA0;($&#xA0;millions)</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Limit</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>120.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">120.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">120.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Short-Term Borrowings
 Outstanding</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>45.3</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">76.6</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">38.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Letters of Credit
 Outstanding</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Available</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>74.7</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">42.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">81.7</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>nonnum:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ScheduleOfDebtInstrumentsTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.22)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84159872&amp;loc=d3e21475-112644<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 470<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=75038535&amp;loc=d3e64711-112823<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08.(e),(f))<br> -URI http://asc.fasb.org/extlink&amp;oid=26873400&amp;loc=d3e23780-122690<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 30<br> -Section 55<br> -Paragraph 8<br> -URI http://asc.fasb.org/extlink&amp;oid=64930739&amp;loc=d3e28878-108400<br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI http://asc.fasb.org/extlink&amp;oid=84159872&amp;loc=d3e21538-112644<br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=84159872&amp;loc=d3e21506-112644<br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 30<br> -Section 45<br> -Paragraph 1A<br> -URI http://asc.fasb.org/extlink&amp;oid=64930785&amp;loc=d3e28541-108399<br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 30<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=64930785&amp;loc=d3e28551-108399<br><br>Reference 10: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 7<br> -URI http://asc.fasb.org/extlink&amp;oid=84159872&amp;loc=d3e21521-112644<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ScheduleOfDebtInstrumentsTextBlock</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6776381296">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>COMMON STOCK AND PREFERRED STOCK (Tables)<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock', window );">Restricted Stock Units Issued</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px"><font style="FONT-FAMILY: Times New Roman" size="2">The equity portion of
 Restricted Stock Units activity during the three months ended
 March&#xA0;31, 2018 in conjunction with the Stock Plan are
 presented in the following table:</font></p>
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 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
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 Granted</font></p>
 </td>
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 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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 Earned</font></p>
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 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of the change in restricted stock units (RSUs).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock</td>
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<td><strong> Data Type:</strong></td>
<td>nonnum:textBlockItemType</td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6925320080">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>ENVIRONMENTAL MATTERS (Tables)<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock', window );">Environmental Obligations Recognized by Company</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The following table sets
 forth a summary of changes in the Company&#x2019;s liability for
 Environmental Obligations for the three months ended March&#xA0;31,
 2018 and 2017.</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
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 <tr>
 <td width="76%"></td>
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 <td></td>
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 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
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 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Environmental
 Obligations</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom" colspan="5"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
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 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom" colspan="5"></td>
 <td valign="bottom"></td>
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 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="22" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>($
 millions)</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
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 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Northern<br />
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 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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 <td valign="bottom"><font size="1">&#xA0;</font></td>
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 <tr style="PAGE-BREAK-INSIDE: avoid">
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 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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 March&#xA0;31,</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Balance at
 Beginning of Period</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>2.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.9</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>2.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.0</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Additions</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Payments /
 Reductions</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.2</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total Balance at End of
 Period</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>2.0</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.2</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>2.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.3</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less: Current
 Portion</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.1</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.1</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.4</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>0.6</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.5</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Noncurrent Balance at
 End of Period</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.5</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.8</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of environmental loss contingencies by individual site. Does not include loss contingencies that are not environmental in nature.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB TOPIC 5.Y.Q2)<br> -URI http://asc.fasb.org/extlink&amp;oid=27011672&amp;loc=d3e149879-122751<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -Section 50<br> -Paragraph 10<br> -Subparagraph (d)<br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13237-110859<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -Section 50<br> -Paragraph 7<br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13207-110859<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -Section 50<br> -Paragraph 11<br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13283-110859<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -Section 50<br> -Paragraph 12<br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13296-110859<br></p></div>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6597528880">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>RETIREMENT BENEFIT OBLIGATIONS (Tables)<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfAssumptionsUsedTableTextBlock', window );">Key Weighted Average Assumptions Used in Determining Benefit Plan Costs and Obligations</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">The following table
 includes the key weighted average assumptions used in determining
 the Company&#x2019;s benefit plan costs and obligations:</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
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 <td width="91%"></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Used to Determine Plan
 Costs</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 <td valign="bottom"></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Discount Rate</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>3.60</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>%&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4.10</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Rate of Compensation
 Increase</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>3.00</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>%&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3.00</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Expected Long-term rate of
 return on plan assets</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.75</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>%&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7.75</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Health Care Cost Trend Rate
 Assumed for Next Year</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.50</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>%&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">8.00</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Ultimate Health Care Cost
 Trend Rate</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>4.50</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>%&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4.00</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Year that Ultimate Health
 Care Cost Trend Rate is reached</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>2024</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2025</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock', window );">Components of Retirement Plan Costs</a></td>
<td class="text"><div>
 <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2">The following table
 provides the components of the Company&#x2019;s Retirement plan
 costs ($000&#x2019;s):</font></p>
 <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 12px; MARGIN-TOP: 0px">
 &#xA0;</p>
 <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
 <tr>
 <td width="66%"></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 <td valign="bottom" width="2%"></td>
 <td></td>
 <td></td>
 <td></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Pension
 Plan</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>PBOP
 Plan</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>SERP</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="bottom" nowrap="nowrap">
 <p style="WIDTH: 110pt; BORDER-BOTTOM: #000000 1px solid; DISPLAY: inline">
 <font style="FONT-FAMILY: Times New Roman" size="1"><b>Three Months
 Ended March&#xA0;31,</b></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2018</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2017</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Service Cost</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>848</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">824</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>733</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">744</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>122</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">115</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Interest Cost</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,469</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,514</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>851</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">978</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>101</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">98</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Expected Return on Plan
 Assets</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(1,946</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(1,819</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(409</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(337</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#x2014;&#xA0;&#xA0;</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Prior Service Cost
 Amortization</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>81</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">66</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>327</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">350</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>47</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">47</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Actuarial Loss
 Amortization</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,447</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,176</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>346</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">524</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>122</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">74</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 3em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2"><font style="WHITE-SPACE: nowrap">Sub-total</font></font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,899</b></font></td>
 <td valign="bottom" nowrap="nowrap"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,761</font></td>
 <td valign="bottom" nowrap="nowrap"></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,848</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2,259</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>392</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">334</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid" bgcolor="#CCEEFF">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Amounts Capitalized and
 Deferred</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(720</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(662</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(742</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(1,037</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>(113</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>)&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(99</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 <tr style="PAGE-BREAK-INSIDE: avoid">
 <td valign="top">
 <p style="MARGIN-LEFT: 1em; TEXT-INDENT: -1em"><font style="FONT-FAMILY: Times New Roman" size="2">Net Periodic Benefit Cost
 Recognized</font></p>
 </td>
 <td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,179</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,099</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1,106</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,222</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>279</b></font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>&#xA0;</b></font></td>
 <td valign="bottom"><font size="1">&#xA0;</font></td>
 <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
 <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">235</font></td>
 <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
 </tr>
 <tr style="FONT-SIZE: 1px">
 <td valign="bottom"></td>
 <td valign="bottom">&#xA0;&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 <td valign="bottom">&#xA0;</td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td valign="bottom">
 <p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
 </td>
 <td>&#xA0;</td>
 </tr>
 </table>
 </div><span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ScheduleOfAssumptionsUsedTableTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (k)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ScheduleOfAssumptionsUsedTableTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>nonnum:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>nonnum:textBlockItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6786952720">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Summary of Significant Accounting Policies - Additional Information (Detail)<br> Bcf in Billions</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th">
<div>Mar. 31, 2018 </div>
<div>USD ($) </div>
<div>Subsidiary </div>
<div>mi </div>
<div>Bcf</div>
</th>
<th class="th">
<div>Mar. 31, 2017 </div>
<div>USD ($) </div>
<div>Bcf</div>
</th>
<th class="th">
<div>Dec. 31, 2017 </div>
<div>USD ($) </div>
<div>Bcf</div>
</th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_LengthOfPipeline', window );">Length Of Pipeline | mi</a></td>
<td class="nump">86<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_RevenueSharingPayment', window );">Revenue sharing payments</a></td>
<td class="nump">$ 300,000<span></span>
</td>
<td class="nump">$ 300,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherSalesRevenueNet', window );">Other</a></td>
<td class="nump">1,300,000<span></span>
</td>
<td class="nump">1,700,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations', window );">Operation and Maintenance Expense</a></td>
<td class="nump">17,300,000<span></span>
</td>
<td class="nump">16,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetRetirementObligationsNoncurrent', window );">Cost of removal obligation</a></td>
<td class="nump">86,600,000<span></span>
</td>
<td class="nump">79,700,000<span></span>
</td>
<td class="nump">$ 84,300,000<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssets', window );">Regulatory Assets</a></td>
<td class="nump">$ 145,800,000<span></span>
</td>
<td class="nump">$ 135,500,000<span></span>
</td>
<td class="nump">$ 149,100,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_NaturalGasAndOilProvedReservesMultiplierToCoverFairValueOfTransactionsOutstanding', window );">Number of Natural Gas Storage Outstanding | Bcf</a></td>
<td class="nump">0.0<span></span>
</td>
<td class="nump">1.2<span></span>
</td>
<td class="nump">0.6<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TradingSecurities', window );">Investments in trading securities</a></td>
<td class="nump">$ 5,100,000<span></span>
</td>
<td class="nump">$ 3,300,000<span></span>
</td>
<td class="nump">$ 3,600,000<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201409Member', window );">ASU 2014-09</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_RevenueSharingPayment', window );">Revenue sharing payments</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">300,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations', window );">Operation and Maintenance Expense</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">15,700,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RetirementPlanTypeAxis=utl_NonServiceMember', window );">Non Service</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost', window );">Non-service cost net periodic benefit costs</a></td>
<td class="nump">1,500,000<span></span>
</td>
<td class="nump">1,600,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember', window );">Not Designated as Hedging Instruments</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral', window );">Derivative Assets, not designated as hedging instruments</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">300,000<span></span>
</td>
<td class="nump">100,000<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProductOrServiceAxis=utl_ProductTypeOneMember', window );">Annual Electric Sales Volume</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PercentageOfSalesVolume', window );">Percentage of total sales volumes revenue subject to RDM</a></td>
<td class="nump">27.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProductOrServiceAxis=utl_ProductTypeTwoMember', window );">Annual Natural Gas Sales Volume</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PercentageOfSalesVolume', window );">Percentage of total sales volumes revenue subject to RDM</a></td>
<td class="nump">11.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RangeAxis=us-gaap_MaximumMember', window );">Maximum</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_CashEquivalentsMaturityPeriod', window );">Cash equivalents maturity period</a></td>
<td class="text">3 months<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementGeographicalAxis=utl_NewEnglandMember', window );">ISO-NE Obligations</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_CashDeposits', window );">Cash Deposits</a></td>
<td class="nump">$ 3,300,000<span></span>
</td>
<td class="nump">2,600,000<span></span>
</td>
<td class="nump">2,900,000<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAxis=utl_HedgingObligationsMember', window );">Natural Gas Hedging Program</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_CashDeposits', window );">Cash Deposits</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementScenarioAxis=us-gaap_RestatementAdjustmentMember', window );">Restatement Adjustment [Member] | ASU 2014-09</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherSalesRevenueNet', window );">Other</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(300,000)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations', window );">Operation and Maintenance Expense</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="num">(300,000)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetAxis=utl_ElectricUtilitiesMember', window );">Deferred Storm Charges</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssets', window );">Regulatory Assets</a></td>
<td class="nump">8,000,000<span></span>
</td>
<td class="nump">$ 8,600,000<span></span>
</td>
<td class="nump">$ 7,200,000<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetAxis=utl_ElectricUtilitiesMember', window );">Deferred Storm Charges | Recovered over Next Year</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssets', window );">Regulatory Assets</a></td>
<td class="nump">500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetAxis=utl_EnvironmentalAndRateCaseCostsAndOtherExpendituresMember', window );">Environmental and Rate Case Costs and Other Expenditures | Recovered over the next seven years</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssets', window );">Regulatory Assets</a></td>
<td class="nump">$ 6,500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_OtherSubsidiariesMember', window );">Unitil Service; Unitil Realty; and Unitil Resources</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_NumberOfSubsidiaries', window );">Number of Subsidiaries | Subsidiary</a></td>
<td class="nump">3<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_UtilitiesMember', window );">Utilities</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SignificantAccountingPoliciesLineItems', window );"><strong>Significant Accounting Policies [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_NumberOfSubsidiaries', window );">Number of Subsidiaries | Subsidiary</a></td>
<td class="nump">3<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetRetirementObligationsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=6392692&amp;loc=d3e7535-110849<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetRetirementObligationsNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of net periodic benefit cost (credit) for defined benefit plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (h)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 20<br> -Section 55<br> -Paragraph 10<br> -URI http://asc.fasb.org/extlink&amp;oid=82849420&amp;loc=SL20226008-175313<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 20<br> -Section 55<br> -Paragraph 9<br> -URI http://asc.fasb.org/extlink&amp;oid=82849420&amp;loc=SL20226006-175313<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 815<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=84234895&amp;loc=d3e41678-113959<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 20<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=51824906&amp;loc=SL20225862-175312<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherSalesRevenueNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after sales adjustments, returns, allowances, and discounts, of revenue classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.1(a),(d))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherSalesRevenueNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 340<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6499975&amp;loc=d3e44250-110382<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TradingSecurities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=82896770&amp;loc=d3e26626-111562<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03.4)<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=82896770&amp;loc=d3e26610-111562<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TradingSecurities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of operating expense for routine plant maintenance, repairs and operations of regulated operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.2(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_CashDeposits">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Cash Deposits</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_CashDeposits</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_CashEquivalentsMaturityPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Cash Equivalents, Maturity Period</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_CashEquivalentsMaturityPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_LengthOfPipeline">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Length of natural gas transmission pipeline.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_LengthOfPipeline</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:lengthItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_NaturalGasAndOilProvedReservesMultiplierToCoverFairValueOfTransactionsOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of natural gas purchase contracts outstanding under hedging program.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_NaturalGasAndOilProvedReservesMultiplierToCoverFairValueOfTransactionsOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:volumeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_NumberOfSubsidiaries">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of Subsidiaries.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_NumberOfSubsidiaries</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:integerItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_PercentageOfSalesVolume">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage Of Sales Volume</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_PercentageOfSalesVolume</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_RevenueSharingPayment">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Revenue sharing payment.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_RevenueSharingPayment</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_SignificantAccountingPoliciesLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Significant Accounting Policies [Line Items]</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_SignificantAccountingPoliciesLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201409Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201409Member</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RetirementPlanTypeAxis=utl_NonServiceMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RetirementPlanTypeAxis=utl_NonServiceMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProductOrServiceAxis=utl_ProductTypeOneMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProductOrServiceAxis=utl_ProductTypeOneMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProductOrServiceAxis=utl_ProductTypeTwoMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProductOrServiceAxis=utl_ProductTypeTwoMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RangeAxis=us-gaap_MaximumMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RangeAxis=us-gaap_MaximumMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementGeographicalAxis=utl_NewEnglandMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementGeographicalAxis=utl_NewEnglandMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsAxis=utl_HedgingObligationsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAndCashEquivalentsAxis=utl_HedgingObligationsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementScenarioAxis=us-gaap_RestatementAdjustmentMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementScenarioAxis=us-gaap_RestatementAdjustmentMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssetAxis=utl_ElectricUtilitiesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssetAxis=utl_ElectricUtilitiesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_PeriodTypeAxis=utl_RecoveredOverNextYearMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_PeriodTypeAxis=utl_RecoveredOverNextYearMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssetAxis=utl_EnvironmentalAndRateCaseCostsAndOtherExpendituresMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssetAxis=utl_EnvironmentalAndRateCaseCostsAndOtherExpendituresMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_PeriodTypeAxis=utl_PeriodFiveMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_PeriodTypeAxis=utl_PeriodFiveMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_OtherSubsidiariesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_OtherSubsidiariesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_UtilitiesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_UtilitiesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>40
<FILENAME>R26.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6785048976">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Components of Gas and Electric Operating Revenue (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">$ 144.5<span></span>
</td>
<td class="nump">$ 124.3<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=utl_BilledAndUnbilledRevenueMember', window );">Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">153.0<span></span>
</td>
<td class="nump">127.8<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=utl_RateAdjustmentMechanismRevenueMember', window );">Rate Adjustment Mechanism Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="num">(8.5)<span></span>
</td>
<td class="num">(3.5)<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=utl_GasSegmentMember', window );">Gas Segment</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">87.0<span></span>
</td>
<td class="nump">74.8<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=utl_GasSegmentMember', window );">Gas Segment | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">91.4<span></span>
</td>
<td class="nump">78.8<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=utl_GasSegmentMember', window );">Gas Segment | Rate Adjustment Mechanism Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="num">(4.4)<span></span>
</td>
<td class="num">(4.0)<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=utl_ElectricMember', window );">Electric</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">57.5<span></span>
</td>
<td class="nump">49.5<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=utl_ElectricMember', window );">Electric | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">61.6<span></span>
</td>
<td class="nump">49.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=utl_ElectricMember', window );">Electric | Rate Adjustment Mechanism Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="num">(4.1)<span></span>
</td>
<td class="nump">0.5<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MajorCustomersAxis=utl_ResidentialMember', window );">Residential | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">70.2<span></span>
</td>
<td class="nump">58.2<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MajorCustomersAxis=utl_ResidentialMember', window );">Residential | Gas Segment | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">35.8<span></span>
</td>
<td class="nump">30.9<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MajorCustomersAxis=utl_ResidentialMember', window );">Residential | Electric | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">34.4<span></span>
</td>
<td class="nump">27.3<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MajorCustomersAxis=utl_CommercialAndIndustrialMember', window );">C&amp;I | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">74.7<span></span>
</td>
<td class="nump">61.8<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MajorCustomersAxis=utl_CommercialAndIndustrialMember', window );">C&amp;I | Gas Segment | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">50.6<span></span>
</td>
<td class="nump">42.3<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MajorCustomersAxis=utl_CommercialAndIndustrialMember', window );">C&amp;I | Electric | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">24.1<span></span>
</td>
<td class="nump">19.5<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MajorCustomersAxis=utl_OtherCustomerMember', window );">Other | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">10.4<span></span>
</td>
<td class="nump">7.8<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MajorCustomersAxis=utl_OtherCustomerMember', window );">Other | Gas Segment | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">6.5<span></span>
</td>
<td class="nump">5.6<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MajorCustomersAxis=utl_OtherCustomerMember', window );">Other | Electric | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="nump">3.9<span></span>
</td>
<td class="nump">$ 2.2<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MajorCustomersAxis=utl_RevenueReductionAdjustmentsTcjaMember', window );">Revenue Reduction - TCJA | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="num">(2.3)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MajorCustomersAxis=utl_RevenueReductionAdjustmentsTcjaMember', window );">Revenue Reduction - TCJA | Gas Segment | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="num">(1.5)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MajorCustomersAxis=utl_RevenueReductionAdjustmentsTcjaMember', window );">Revenue Reduction - TCJA | Electric | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_OperatingRevenuesLineItems', window );"><strong>Operating Revenues [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax', window );">Total Gas and Electric Operating Revenues</a></td>
<td class="num">$ (0.8)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 32<br> -Paragraph 2A<br> -URI http://asc.fasb.org/extlink&amp;oid=82859839&amp;loc=SL82860478-203043<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=82913847&amp;loc=SL49130539-203045<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=82913847&amp;loc=SL49130543-203045<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -URI http://asc.fasb.org/extlink&amp;oid=82913847&amp;loc=SL49130545-203045<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_OperatingRevenuesLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Operating revenues.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_OperatingRevenuesLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=utl_BilledAndUnbilledRevenueMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=utl_BilledAndUnbilledRevenueMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=utl_RateAdjustmentMechanismRevenueMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=utl_RateAdjustmentMechanismRevenueMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementBusinessSegmentsAxis=utl_GasSegmentMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=utl_GasSegmentMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementBusinessSegmentsAxis=utl_ElectricMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=utl_ElectricMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_MajorCustomersAxis=utl_ResidentialMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_MajorCustomersAxis=utl_ResidentialMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_MajorCustomersAxis=utl_CommercialAndIndustrialMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_MajorCustomersAxis=utl_CommercialAndIndustrialMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_MajorCustomersAxis=utl_OtherCustomerMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_MajorCustomersAxis=utl_OtherCustomerMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_MajorCustomersAxis=utl_RevenueReductionAdjustmentsTcjaMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_MajorCustomersAxis=utl_RevenueReductionAdjustmentsTcjaMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>41
<FILENAME>R27.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6773270736">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Schedule of Other Operating Revenues and Operating Expenses (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ComponentOfOperatingOtherCostAndExpenseLineItems', window );"><strong>Component of Operating Other Cost and Expense [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ContractsRevenue', window );">Usource Contract Revenue</a></td>
<td class="nump">$ 1.6<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_RevenueSharingPayment', window );">Less: Revenue Sharing Payments</a></td>
<td class="nump">0.3<span></span>
</td>
<td class="nump">$ 0.3<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedOperatingRevenueOther', window );">Total Other Operating Revenues</a></td>
<td class="nump">1.3<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations', window );">Operation and Maintenance Expense</a></td>
<td class="nump">$ 17.3<span></span>
</td>
<td class="nump">16.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201409Member', window );">ASU 2014-09</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ComponentOfOperatingOtherCostAndExpenseLineItems', window );"><strong>Component of Operating Other Cost and Expense [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ContractsRevenue', window );">Usource Contract Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1.7<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_RevenueSharingPayment', window );">Less: Revenue Sharing Payments</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0.3<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedOperatingRevenueOther', window );">Total Other Operating Revenues</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1.4<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations', window );">Operation and Maintenance Expense</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 15.7<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ComponentOfOperatingOtherCostAndExpenseLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ComponentOfOperatingOtherCostAndExpenseLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ContractsRevenue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of revenue earned from products sold or services provided under the terms of a contract, including, but not limited to, government contracts and construction contracts, classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.1)<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ContractsRevenue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatedOperatingRevenueOther">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of regulated other operating revenues recognized during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatedOperatingRevenueOther</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of operating expense for routine plant maintenance, repairs and operations of regulated operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 225<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.2(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=63488584&amp;loc=d3e20235-122688<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_RevenueSharingPayment">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Revenue sharing payment.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_RevenueSharingPayment</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201409Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201409Member</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>42
<FILENAME>R28.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6776928960">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Allowance for Doubtful Accounts Included in Accounts Receivable Net (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ValuationAllowanceLineItems', window );"><strong>Valuation Allowance [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AllowanceForDoubtfulAccountsReceivable', window );">Allowance for Doubtful Accounts</a></td>
<td class="nump">$ 1.6<span></span>
</td>
<td class="nump">$ 1.6<span></span>
</td>
<td class="nump">$ 1.0<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AllowanceForDoubtfulAccountsReceivable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=84173941&amp;loc=d3e5074-111524<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.4)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AllowanceForDoubtfulAccountsReceivable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ValuationAllowanceLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ValuationAllowanceLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>43
<FILENAME>R29.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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</head>
<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6787625760">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Components of Accrued Revenue (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredRevenueArrangementLineItems', window );"><strong>Deferred Revenue Arrangement [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UnbilledContractsReceivable', window );">Accrued Revenue</a></td>
<td class="nump">$ 45.1<span></span>
</td>
<td class="nump">$ 53.3<span></span>
</td>
<td class="nump">$ 41.3<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=us-gaap_UnbilledRevenuesMember', window );">Unbilled Revenues</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredRevenueArrangementLineItems', window );"><strong>Deferred Revenue Arrangement [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UnbilledContractsReceivable', window );">Accrued Revenue</a></td>
<td class="nump">10.5<span></span>
</td>
<td class="nump">13.8<span></span>
</td>
<td class="nump">9.3<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BalanceSheetLocationAxis=utl_RegulatoryAssetMember', window );">Regulatory Assets</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredRevenueArrangementLineItems', window );"><strong>Deferred Revenue Arrangement [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UnbilledContractsReceivable', window );">Accrued Revenue</a></td>
<td class="nump">$ 34.6<span></span>
</td>
<td class="nump">$ 39.5<span></span>
</td>
<td class="nump">$ 32.0<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredRevenueArrangementLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredRevenueArrangementLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UnbilledContractsReceivable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.3(c)(3))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 912<br> -SubTopic 310<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=68054760&amp;loc=d3e55302-109406<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UnbilledContractsReceivable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=us-gaap_UnbilledRevenuesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=us-gaap_UnbilledRevenuesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_BalanceSheetLocationAxis=utl_RegulatoryAssetMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_BalanceSheetLocationAxis=utl_RegulatoryAssetMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>44
<FILENAME>R30.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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</head>
<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6785536480">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Components of Exchange Gas Receivable (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ReceivablesLineItems', window );"><strong>Receivables [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherReceivablesNetCurrent', window );">Total Exchange Gas Receivable</a></td>
<td class="nump">$ 0.2<span></span>
</td>
<td class="nump">$ 5.8<span></span>
</td>
<td class="nump">$ 2.1<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ReceivablesLineItems', window );"><strong>Receivables [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherReceivablesNetCurrent', window );">Total Exchange Gas Receivable</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">5.4<span></span>
</td>
<td class="nump">1.9<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ReceivablesLineItems', window );"><strong>Receivables [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherReceivablesNetCurrent', window );">Total Exchange Gas Receivable</a></td>
<td class="nump">$ 0.2<span></span>
</td>
<td class="nump">$ 0.4<span></span>
</td>
<td class="nump">$ 0.2<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherReceivablesNetCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherReceivablesNetCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ReceivablesLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent receivables.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ReceivablesLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>45
<FILENAME>R31.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6786208432">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Components of Gas Inventory (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesInventoryLineItems', window );"><strong>Public Utilities, Inventory [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageCostInventoryAmount', window );">Weighted average cost inventory amount</a></td>
<td class="nump">$ 0.4<span></span>
</td>
<td class="nump">$ 0.6<span></span>
</td>
<td class="nump">$ 0.3<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ReserveQuantitiesByTypeOfReserveAxis=us-gaap_NaturalGasLiquidsReservesMember', window );">Liquefied Natural Gas &amp; Other</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesInventoryLineItems', window );"><strong>Public Utilities, Inventory [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageCostInventoryAmount', window );">Weighted average cost inventory amount</a></td>
<td class="nump">0.1<span></span>
</td>
<td class="nump">0.1<span></span>
</td>
<td class="nump">0.1<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesInventoryAxis=us-gaap_PublicUtilitiesInventoryNaturalGasMember', window );">Natural Gas</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesInventoryLineItems', window );"><strong>Public Utilities, Inventory [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageCostInventoryAmount', window );">Weighted average cost inventory amount</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0.4<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesInventoryAxis=us-gaap_PublicUtilitiesInventoryPropaneMember', window );">Propane</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesInventoryLineItems', window );"><strong>Public Utilities, Inventory [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageCostInventoryAmount', window );">Weighted average cost inventory amount</a></td>
<td class="nump">$ 0.3<span></span>
</td>
<td class="nump">$ 0.1<span></span>
</td>
<td class="nump">$ 0.2<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesInventoryLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesInventoryLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WeightedAverageCostInventoryAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of weighted average cost inventory present at the reporting date when inventory is valued using different valuation methods.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6361739&amp;loc=d3e7789-107766<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WeightedAverageCostInventoryAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ReserveQuantitiesByTypeOfReserveAxis=us-gaap_NaturalGasLiquidsReservesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ReserveQuantitiesByTypeOfReserveAxis=us-gaap_NaturalGasLiquidsReservesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesInventoryAxis=us-gaap_PublicUtilitiesInventoryNaturalGasMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesInventoryAxis=us-gaap_PublicUtilitiesInventoryNaturalGasMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesInventoryAxis=us-gaap_PublicUtilitiesInventoryPropaneMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesInventoryAxis=us-gaap_PublicUtilitiesInventoryPropaneMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>46
<FILENAME>R32.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6938516480">
<tr>
<th class="tl" colspan="2" rowspan="1"><div style="width: 200px;"><strong>Regulatory Assets (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssets', window );">Regulatory Assets</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="nump">$ 145.8<span></span>
</td>
<td class="nump">$ 149.1<span></span>
</td>
<td class="nump">$ 135.5<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetsCurrent', window );">Less: Current Portion of Regulatory Assets</a></td>
<td class="th" style="border-bottom: 0px;"><sup>[1]</sup></td>
<td class="nump">34.6<span></span>
</td>
<td class="nump">39.5<span></span>
</td>
<td class="nump">32.0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetsNoncurrent', window );">Regulatory Assets - noncurrent</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="nump">111.2<span></span>
</td>
<td class="nump">109.6<span></span>
</td>
<td class="nump">103.5<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LossContingenciesByNatureOfContingencyAxis=utl_EnvironmentalMattersMember', window );">Environmental Matters</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssets', window );">Regulatory Assets</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="nump">9.0<span></span>
</td>
<td class="nump">9.5<span></span>
</td>
<td class="nump">10.7<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BalanceSheetLocationAxis=us-gaap_OtherAssetsMember', window );">Other Assets</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssets', window );">Regulatory Assets</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="nump">5.2<span></span>
</td>
<td class="nump">5.4<span></span>
</td>
<td class="nump">5.5<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetAxis=utl_PostretirementBenefitMember', window );">Retirement Benefits</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssets', window );">Regulatory Assets</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="nump">85.4<span></span>
</td>
<td class="nump">84.5<span></span>
</td>
<td class="nump">75.7<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetAxis=utl_ElectricUtilitiesMember', window );">Deferred Storm Charges</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssets', window );">Regulatory Assets</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="nump">8.0<span></span>
</td>
<td class="nump">7.2<span></span>
</td>
<td class="nump">8.6<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetAxis=utl_IncomeTaxesMember', window );">Income Taxes</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssets', window );">Regulatory Assets</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="nump">6.3<span></span>
</td>
<td class="nump">6.5<span></span>
</td>
<td class="nump">7.3<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RestructuringCostAndReserveAxis=utl_ContractualObligationsMember', window );">Energy Supply &amp; Other Rate Adjustment Mechanisms</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssets', window );">Regulatory Assets</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="nump">$ 31.9<span></span>
</td>
<td class="nump">$ 36.0<span></span>
</td>
<td class="nump">$ 27.7<span></span>
</td>
</tr>
<tr><td colspan="4"></td></tr>
<tr><td colspan="4"><table class="outerFootnotes" width="100%"><tr class="outerFootnote">
<td style="vertical-align: top; width: 12pt;" valign="top">[1]</td>
<td style="vertical-align: top;" valign="top">Reflects amounts included in Accrued Revenue, discussed above, on the Company's Consolidated Balance Sheets.</td>
</tr></table></td></tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssetLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssetLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 340<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6499975&amp;loc=d3e44250-110382<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssetsCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 340<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6499975&amp;loc=d3e44250-110382<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssetsCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssetsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 340<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6499975&amp;loc=d3e44250-110382<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssetsNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LossContingenciesByNatureOfContingencyAxis=utl_EnvironmentalMattersMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LossContingenciesByNatureOfContingencyAxis=utl_EnvironmentalMattersMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_BalanceSheetLocationAxis=us-gaap_OtherAssetsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_BalanceSheetLocationAxis=us-gaap_OtherAssetsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssetAxis=utl_PostretirementBenefitMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssetAxis=utl_PostretirementBenefitMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssetAxis=utl_ElectricUtilitiesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssetAxis=utl_ElectricUtilitiesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssetAxis=utl_IncomeTaxesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssetAxis=utl_IncomeTaxesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RestructuringCostAndReserveAxis=utl_ContractualObligationsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RestructuringCostAndReserveAxis=utl_ContractualObligationsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>47
<FILENAME>R33.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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</head>
<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6785165488">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Regulatory Liabilities (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilitiesLineItems', window );"><strong>Regulatory Liabilities [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilities', window );">Regulatory Liabilities</a></td>
<td class="nump">$ 60.0<span></span>
</td>
<td class="nump">$ 58.1<span></span>
</td>
<td class="nump">$ 13.5<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilityCurrent', window );">Less: Current Portion of Regulatory Liabilities</a></td>
<td class="nump">10.9<span></span>
</td>
<td class="nump">9.2<span></span>
</td>
<td class="nump">12.8<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilityNoncurrent', window );">Regulatory Liabilities-noncurrent</a></td>
<td class="nump">49.1<span></span>
</td>
<td class="nump">48.9<span></span>
</td>
<td class="nump">0.7<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilityAxis=utl_RateAdjustmentMechanismsMember', window );">Rate Adjustment Mechanisms</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilitiesLineItems', window );"><strong>Regulatory Liabilities [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilities', window );">Regulatory Liabilities</a></td>
<td class="nump">10.3<span></span>
</td>
<td class="nump">6.9<span></span>
</td>
<td class="nump">9.2<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilityAxis=utl_GasPipelineRefundMember', window );">Gas Pipeline Refund</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilitiesLineItems', window );"><strong>Regulatory Liabilities [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilities', window );">Regulatory Liabilities</a></td>
<td class="nump">0.6<span></span>
</td>
<td class="nump">2.3<span></span>
</td>
<td class="nump">$ 4.3<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilityAxis=utl_IncomeTaxRelatedLiabilitiesMember', window );">Income Tax Related Liabilities</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilitiesLineItems', window );"><strong>Regulatory Liabilities [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilities', window );">Regulatory Liabilities</a></td>
<td class="nump">$ 49.1<span></span>
</td>
<td class="nump">$ 48.9<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 405<br> -Section 25<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6500807&amp;loc=d3e48068-110394<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilitiesLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilitiesLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilityCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 405<br> -Section 25<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6500807&amp;loc=d3e48068-110394<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilityCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilityNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.24)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilityNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilityAxis=utl_RateAdjustmentMechanismsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilityAxis=utl_RateAdjustmentMechanismsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilityAxis=utl_GasPipelineRefundMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilityAxis=utl_GasPipelineRefundMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilityAxis=utl_IncomeTaxRelatedLiabilitiesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilityAxis=utl_IncomeTaxRelatedLiabilitiesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>48
<FILENAME>R34.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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</head>
<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6786760576">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Fair Value of Marketable Securities (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueInputsAssetsQuantitativeInformationLineItems', window );"><strong>Fair Value Inputs, Assets, Quantitative Information [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TradingSecurities', window );">Trading Securities</a></td>
<td class="nump">$ 5.1<span></span>
</td>
<td class="nump">$ 3.6<span></span>
</td>
<td class="nump">$ 3.3<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member', window );">Fair Value, Inputs, Level 1</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueInputsAssetsQuantitativeInformationLineItems', window );"><strong>Fair Value Inputs, Assets, Quantitative Information [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TradingSecurities', window );">Trading Securities</a></td>
<td class="nump">5.1<span></span>
</td>
<td class="nump">3.6<span></span>
</td>
<td class="nump">3.3<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member', window );">Fair Value, Inputs, Level 1 | Equity Funds</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueInputsAssetsQuantitativeInformationLineItems', window );"><strong>Fair Value Inputs, Assets, Quantitative Information [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TradingSecurities', window );">Trading Securities</a></td>
<td class="nump">1.9<span></span>
</td>
<td class="nump">2.1<span></span>
</td>
<td class="nump">1.1<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member', window );">Fair Value, Inputs, Level 1 | Fixed Income Funds</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueInputsAssetsQuantitativeInformationLineItems', window );"><strong>Fair Value Inputs, Assets, Quantitative Information [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TradingSecurities', window );">Trading Securities</a></td>
<td class="nump">1.6<span></span>
</td>
<td class="nump">$ 1.5<span></span>
</td>
<td class="nump">0.9<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member', window );">Fair Value, Inputs, Level 1 | Cash Equivalents</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueInputsAssetsQuantitativeInformationLineItems', window );"><strong>Fair Value Inputs, Assets, Quantitative Information [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TradingSecurities', window );">Trading Securities</a></td>
<td class="nump">$ 1.6<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1.3<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueInputsAssetsQuantitativeInformationLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueInputsAssetsQuantitativeInformationLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TradingSecurities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=82896770&amp;loc=d3e26626-111562<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03.4)<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=82896770&amp;loc=d3e26610-111562<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TradingSecurities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InvestmentTypeAxis=us-gaap_EquityFundsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InvestmentTypeAxis=us-gaap_EquityFundsMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<td><strong> Period Type:</strong></td>
<td></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InvestmentTypeAxis=us-gaap_FixedIncomeFundsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InvestmentTypeAxis=us-gaap_FixedIncomeFundsMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InvestmentTypeAxis=us-gaap_CashEquivalentsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InvestmentTypeAxis=us-gaap_CashEquivalentsMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6786209104">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Components of Energy Supply Obligations (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ContractualObligationLineItems', window );"><strong>Contractual Obligation [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EnergyMarketingContractLiabilitiesCurrent', window );">Energy Supply Obligations-Current</a></td>
<td class="nump">$ 7.8<span></span>
</td>
<td class="nump">$ 9.7<span></span>
</td>
<td class="nump">$ 9.0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EnergyMarketingContractLiabilitiesNoncurrent', window );">Power Supply Contract Divestitures, Noncurrent</a></td>
<td class="nump">0.8<span></span>
</td>
<td class="nump">0.9<span></span>
</td>
<td class="nump">1.2<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_EnergyMarketingContractLiabilities', window );">Total Energy Supply Obligations</a></td>
<td class="nump">8.6<span></span>
</td>
<td class="nump">10.6<span></span>
</td>
<td class="nump">10.2<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByLiabilityClassAxis=us-gaap_ObligationsMember', window );">Exchange Gas Obligation</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ContractualObligationLineItems', window );"><strong>Contractual Obligation [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EnergyMarketingContractLiabilitiesCurrent', window );">Energy Supply Obligations-Current</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">5.4<span></span>
</td>
<td class="nump">1.9<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilityAxis=utl_RenewableEnergyPortfolioRequirementMember', window );">Renewable Energy Portfolio Standards</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ContractualObligationLineItems', window );"><strong>Contractual Obligation [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EnergyMarketingContractLiabilitiesCurrent', window );">Energy Supply Obligations-Current</a></td>
<td class="nump">7.5<span></span>
</td>
<td class="nump">4.0<span></span>
</td>
<td class="nump">6.8<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilityAxis=utl_DivestitureMember', window );">Power Supply Contract Divestitures</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ContractualObligationLineItems', window );"><strong>Contractual Obligation [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EnergyMarketingContractLiabilitiesCurrent', window );">Energy Supply Obligations-Current</a></td>
<td class="nump">$ 0.3<span></span>
</td>
<td class="nump">$ 0.3<span></span>
</td>
<td class="nump">$ 0.3<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EnergyMarketingContractLiabilitiesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Current liabilities attributable to energy marketing activities (trading activities). Current energy marketing (trading activities) are when entities engage in both financial and physical trading to increase profits, manage their commodity price risk and enhance system reliability. They may trade electricity, coal, natural gas and oil. These entities typically use a variety of financial instruments, including forward contracts, options and swaps.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EnergyMarketingContractLiabilitiesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
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</table></div>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Fair value of liability arising from energy marketing activities (trading activities), expected to be settled after one year or beyond the normal operating cycle, if longer. Examples of energy marketing activities include, but are not limited to, trading of electricity, coal, natural gas and oil using financial instruments, including, but not limited to, forward contracts, options and swaps.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 15<br> -URI http://asc.fasb.org/extlink&amp;oid=77997519&amp;loc=d3e13495-108611<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 815<br> -SubTopic 10<br> -Section 45<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=6945355&amp;loc=d3e41271-113958<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 10<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=77997519&amp;loc=d3e13433-108611<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 815<br> -SubTopic 10<br> -Section 45<br> -Paragraph 5<br> -URI http://asc.fasb.org/extlink&amp;oid=6945355&amp;loc=d3e41228-113958<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EnergyMarketingContractLiabilitiesNoncurrent</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<td><strong> Period Type:</strong></td>
<td>instant</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Contractual Obligation [Line Items]</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ContractualObligationLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
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</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_EnergyMarketingContractLiabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total amount of obligations resulting from entry into energy supply contracts.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_EnergyMarketingContractLiabilities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueByLiabilityClassAxis=us-gaap_ObligationsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueByLiabilityClassAxis=us-gaap_ObligationsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
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<td></td>
</tr>
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</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilityAxis=utl_RenewableEnergyPortfolioRequirementMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilityAxis=utl_RenewableEnergyPortfolioRequirementMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
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<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilityAxis=utl_DivestitureMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilityAxis=utl_DivestitureMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
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</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>50
<FILENAME>R36.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6785482352">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Dividends Declared Per Share (Detail) - $ / shares<br></strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableLineItems', window );"><strong>Dividends Payable [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockDividendsPerShareDeclared', window );">Dividend Amount</a></td>
<td class="nump">$ 0.365<span></span>
</td>
<td class="nump">$ 0.360<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsAxis=utl_GroupOneMember', window );">Group One</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableLineItems', window );"><strong>Dividends Payable [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableDateDeclaredDayMonthAndYear', window );">Declaration Date</a></td>
<td class="text">Apr. 25,  2018<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendPayableDateToBePaidDayMonthAndYear', window );">Date Paid (Payable)</a></td>
<td class="text">May 29,  2018<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear', window );">Shareholder of Record Date</a></td>
<td class="text">May 15,  2018<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockDividendsPerShareDeclared', window );">Dividend Amount</a></td>
<td class="nump">$ 0.365<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsAxis=utl_GroupTwoMember', window );">Group Two</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableLineItems', window );"><strong>Dividends Payable [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableDateDeclaredDayMonthAndYear', window );">Declaration Date</a></td>
<td class="text">Jan. 30,  2018<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendPayableDateToBePaidDayMonthAndYear', window );">Date Paid (Payable)</a></td>
<td class="text">Feb. 28,  2018<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear', window );">Shareholder of Record Date</a></td>
<td class="text">Feb. 14,  2018<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockDividendsPerShareDeclared', window );">Dividend Amount</a></td>
<td class="nump">$ 0.365<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsAxis=utl_GroupThreeMember', window );">Group Three</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableLineItems', window );"><strong>Dividends Payable [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableDateDeclaredDayMonthAndYear', window );">Declaration Date</a></td>
<td class="text">Oct. 25,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendPayableDateToBePaidDayMonthAndYear', window );">Date Paid (Payable)</a></td>
<td class="text">Nov. 29,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear', window );">Shareholder of Record Date</a></td>
<td class="text">Nov. 15,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockDividendsPerShareDeclared', window );">Dividend Amount</a></td>
<td class="nump">$ 0.360<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsAxis=utl_GroupFourMember', window );">Group Four</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableLineItems', window );"><strong>Dividends Payable [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableDateDeclaredDayMonthAndYear', window );">Declaration Date</a></td>
<td class="text">Jul. 26,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendPayableDateToBePaidDayMonthAndYear', window );">Date Paid (Payable)</a></td>
<td class="text">Aug. 29,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear', window );">Shareholder of Record Date</a></td>
<td class="text">Aug. 15,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockDividendsPerShareDeclared', window );">Dividend Amount</a></td>
<td class="nump">$ 0.360<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsAxis=utl_GroupFiveMember', window );">Group Five</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableLineItems', window );"><strong>Dividends Payable [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableDateDeclaredDayMonthAndYear', window );">Declaration Date</a></td>
<td class="text">Apr. 26,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendPayableDateToBePaidDayMonthAndYear', window );">Date Paid (Payable)</a></td>
<td class="text">May 30,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear', window );">Shareholder of Record Date</a></td>
<td class="text">May 16,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockDividendsPerShareDeclared', window );">Dividend Amount</a></td>
<td class="nump">$ 0.360<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsAxis=utl_GroupSixMember', window );">Group Six</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableLineItems', window );"><strong>Dividends Payable [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableDateDeclaredDayMonthAndYear', window );">Declaration Date</a></td>
<td class="text">Jan. 25,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendPayableDateToBePaidDayMonthAndYear', window );">Date Paid (Payable)</a></td>
<td class="text">Feb. 28,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear', window );">Shareholder of Record Date</a></td>
<td class="text">Feb. 14,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockDividendsPerShareDeclared', window );">Dividend Amount</a></td>
<td class="nump">$ 0.360<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockDividendsPerShareDeclared">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate dividends declared during the period for each share of common stock outstanding.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=27012166&amp;loc=d3e187085-122770<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockDividendsPerShareDeclared</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendPayableDateToBePaidDayMonthAndYear">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Date the declared dividend will be paid, in CCYY-MM-DD format.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=98513485&amp;loc=d3e4304-108586<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DividendPayableDateToBePaidDayMonthAndYear</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendsPayableDateDeclaredDayMonthAndYear">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Date the dividend to be paid was declared, in CCYY-MM-DD format.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=98513485&amp;loc=d3e4304-108586<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DividendsPayableDateDeclaredDayMonthAndYear</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DividendsPayableDateOfRecordDayMonthAndYear</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
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<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendsPayableLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DividendsPayableLineItems</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendsAxis=utl_GroupOneMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DividendsAxis=utl_GroupOneMember</td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<td></td>
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<td><strong> Period Type:</strong></td>
<td></td>
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</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendsAxis=utl_GroupTwoMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DividendsAxis=utl_GroupTwoMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendsAxis=utl_GroupThreeMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DividendsAxis=utl_GroupThreeMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendsAxis=utl_GroupFourMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DividendsAxis=utl_GroupFourMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendsAxis=utl_GroupFiveMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DividendsAxis=utl_GroupFiveMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendsAxis=utl_GroupSixMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DividendsAxis=utl_GroupSixMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>51
<FILENAME>R37.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6786013200">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Significant Segment Financial Data (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UnregulatedOperatingRevenue', window );">Other Operating Revenue - Non-Regulated</a></td>
<td class="nump">$ 1.3<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedAndUnregulatedOperatingRevenue', window );">Revenues</a></td>
<td class="nump">145.8<span></span>
</td>
<td class="nump">$ 126.0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic', window );">Segment Profit</a></td>
<td class="nump">15.6<span></span>
</td>
<td class="nump">12.4<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Assets', window );">Identifiable Segment Assets</a></td>
<td class="nump">1,244.3<span></span>
</td>
<td class="nump">1,134.4<span></span>
</td>
<td class="nump">$ 1,241.9<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment', window );">Capital Expenditures</a></td>
<td class="nump">10.1<span></span>
</td>
<td class="nump">17.5<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=utl_BilledAndUnbilledRevenueMember', window );">Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedAndUnregulatedOperatingRevenue', window );">Revenues</a></td>
<td class="nump">153.0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=utl_RateAdjustmentMechanismRevenueMember', window );">Rate Adjustment Mechanism Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedAndUnregulatedOperatingRevenue', window );">Revenues</a></td>
<td class="num">(8.5)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=utl_GasSegmentMember', window );">Gas Segment</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedAndUnregulatedOperatingRevenue', window );">Revenues</a></td>
<td class="nump">87.0<span></span>
</td>
<td class="nump">74.8<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic', window );">Segment Profit</a></td>
<td class="nump">12.6<span></span>
</td>
<td class="nump">9.9<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Assets', window );">Identifiable Segment Assets</a></td>
<td class="nump">712.6<span></span>
</td>
<td class="nump">641.8<span></span>
</td>
<td class="nump">714.3<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment', window );">Capital Expenditures</a></td>
<td class="nump">3.6<span></span>
</td>
<td class="nump">5.7<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=utl_GasSegmentMember', window );">Gas Segment | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedAndUnregulatedOperatingRevenue', window );">Revenues</a></td>
<td class="nump">91.4<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=utl_GasSegmentMember', window );">Gas Segment | Rate Adjustment Mechanism Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedAndUnregulatedOperatingRevenue', window );">Revenues</a></td>
<td class="num">(4.4)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=utl_ElectricMember', window );">Electric</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedAndUnregulatedOperatingRevenue', window );">Revenues</a></td>
<td class="nump">57.5<span></span>
</td>
<td class="nump">49.5<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic', window );">Segment Profit</a></td>
<td class="nump">3.0<span></span>
</td>
<td class="nump">2.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Assets', window );">Identifiable Segment Assets</a></td>
<td class="nump">481.8<span></span>
</td>
<td class="nump">442.8<span></span>
</td>
<td class="nump">476.9<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment', window );">Capital Expenditures</a></td>
<td class="nump">6.0<span></span>
</td>
<td class="nump">8.3<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=utl_ElectricMember', window );">Electric | Billed and Unbilled Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedAndUnregulatedOperatingRevenue', window );">Revenues</a></td>
<td class="nump">61.6<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=utl_ElectricMember', window );">Electric | Rate Adjustment Mechanism Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedAndUnregulatedOperatingRevenue', window );">Revenues</a></td>
<td class="num">(4.1)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember', window );">All Other Segments</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic', window );">Segment Profit</a></td>
<td class="num">(0.4)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Assets', window );">Identifiable Segment Assets</a></td>
<td class="nump">42.8<span></span>
</td>
<td class="nump">42.8<span></span>
</td>
<td class="nump">44.0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment', window );">Capital Expenditures</a></td>
<td class="nump">0.5<span></span>
</td>
<td class="nump">3.5<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis=us-gaap_UnregulatedOperationMember', window );">Unregulated Operation</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UnregulatedOperatingRevenue', window );">Other Operating Revenue - Non-Regulated</a></td>
<td class="nump">1.3<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatedAndUnregulatedOperatingRevenue', window );">Revenues</a></td>
<td class="nump">1.3<span></span>
</td>
<td class="nump">1.7<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic', window );">Segment Profit</a></td>
<td class="nump">0.4<span></span>
</td>
<td class="nump">0.4<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Assets', window );">Identifiable Segment Assets</a></td>
<td class="nump">$ 7.1<span></span>
</td>
<td class="nump">$ 7.0<span></span>
</td>
<td class="nump">$ 6.7<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Assets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(12))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(11))<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Assets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 11<br> -URI http://asc.fasb.org/extlink&amp;oid=96947427&amp;loc=d3e1377-109256<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic</td>
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<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 13<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3213-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PaymentsToAcquirePropertyPlantAndEquipment</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatedAndUnregulatedOperatingRevenue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The total amount of operating revenues recognized during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatedAndUnregulatedOperatingRevenue</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UnregulatedOperatingRevenue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of unregulated operating revenues recognized during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UnregulatedOperatingRevenue</td>
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<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=utl_BilledAndUnbilledRevenueMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=utl_BilledAndUnbilledRevenueMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=utl_RateAdjustmentMechanismRevenueMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=utl_RateAdjustmentMechanismRevenueMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementBusinessSegmentsAxis=utl_GasSegmentMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=utl_GasSegmentMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementBusinessSegmentsAxis=utl_ElectricMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=utl_ElectricMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis=us-gaap_UnregulatedOperationMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis=us-gaap_UnregulatedOperationMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>52
<FILENAME>R38.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6787271888">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Details on Long Term Debt (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">$ 396.0<span></span>
</td>
<td class="nump">$ 409.4<span></span>
</td>
<td class="nump">$ 336.4<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UnamortizedDebtIssuanceExpense', window );">Less: Unamortized Debt Issuance Costs</a></td>
<td class="nump">3.2<span></span>
</td>
<td class="nump">3.3<span></span>
</td>
<td class="nump">2.9<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebt', window );">Long-Term Debt</a></td>
<td class="nump">392.8<span></span>
</td>
<td class="nump">406.1<span></span>
</td>
<td class="nump">333.5<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtCurrent', window );">Less: Current Portion</a></td>
<td class="nump">29.8<span></span>
</td>
<td class="nump">29.8<span></span>
</td>
<td class="nump">30.0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtNoncurrent', window );">Total Long-term Debt, Less Current Portion</a></td>
<td class="nump">363.0<span></span>
</td>
<td class="nump">376.3<span></span>
</td>
<td class="nump">303.5<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebt', window );">Long-Term Debt</a></td>
<td class="nump">392.8<span></span>
</td>
<td class="nump">406.1<span></span>
</td>
<td class="nump">333.5<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointThreeThreePercentDueMayOneTwentyTwentyTwoMember', window );">6.33% Senior Notes, Due May 1, 2022</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">20.0<span></span>
</td>
<td class="nump">20.0<span></span>
</td>
<td class="nump">20.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorUnsecuredNotesThreePointSevenZeroPercentDueAugustOneTwentyTwentySixMember', window );">3.70% Senior Notes, Due August 1, 2026</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">30.0<span></span>
</td>
<td class="nump">30.0<span></span>
</td>
<td class="nump">30.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_UnitilEnergySystemsIncMember', window );">Unitil Energy Systems Inc | First Mortgage Bonds 5.24% Senior Secured Notes, Due March 2, 2020</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">10.0<span></span>
</td>
<td class="nump">15.0<span></span>
</td>
<td class="nump">15.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_UnitilEnergySystemsIncMember', window );">Unitil Energy Systems Inc | First Mortgage Bonds 8.49% Senior Secured Notes, Due October 14, 2024</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">7.5<span></span>
</td>
<td class="nump">7.5<span></span>
</td>
<td class="nump">9.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_UnitilEnergySystemsIncMember', window );">Unitil Energy Systems Inc | First Mortgage Bonds 6.96% Senior Secured Notes, Due September 1, 2028</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">20.0<span></span>
</td>
<td class="nump">20.0<span></span>
</td>
<td class="nump">20.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_UnitilEnergySystemsIncMember', window );">Unitil Energy Systems Inc | First Mortgage Bonds 8.00% Senior Secured Notes, Due May 1, 2031</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">15.0<span></span>
</td>
<td class="nump">15.0<span></span>
</td>
<td class="nump">15.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_UnitilEnergySystemsIncMember', window );">Unitil Energy Systems Inc | First Mortgage Bonds 6.32% Senior Secured Notes, Due September 15, 2036</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">15.0<span></span>
</td>
<td class="nump">15.0<span></span>
</td>
<td class="nump">15.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | 6.75% Senior Notes, Due November 30, 2023</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">7.6<span></span>
</td>
<td class="nump">7.6<span></span>
</td>
<td class="nump">9.5<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | 6.79% Senior Notes, Due October 15, 2025</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">10.0<span></span>
</td>
<td class="nump">10.0<span></span>
</td>
<td class="nump">10.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | 3.52% Senior Notes, Due November 1, 2027</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">10.0<span></span>
</td>
<td class="nump">10.0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | 7.37% Senior Notes, Due January 15, 2029</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">12.0<span></span>
</td>
<td class="nump">12.0<span></span>
</td>
<td class="nump">12.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | 5.90% Senior Notes, Due December 15, 2030</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">15.0<span></span>
</td>
<td class="nump">15.0<span></span>
</td>
<td class="nump">15.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | 7.98% Senior Notes, Due June 1, 2031</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">14.0<span></span>
</td>
<td class="nump">14.0<span></span>
</td>
<td class="nump">14.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | 4.32% Senior Notes, Due November 1, 2047</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">15.0<span></span>
</td>
<td class="nump">15.0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | 3.52% Senior Notes, Due November 1, 2027</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">20.0<span></span>
</td>
<td class="nump">20.0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | 4.32% Senior Notes, Due November 1, 2047</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">30.0<span></span>
</td>
<td class="nump">30.0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | 6.95% Senior Notes, Due December 3, 2018</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">10.0<span></span>
</td>
<td class="nump">10.0<span></span>
</td>
<td class="nump">20.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | 5.29% Senior Notes, Due March 2, 2020</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">16.6<span></span>
</td>
<td class="nump">25.0<span></span>
</td>
<td class="nump">25.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | 7.72% Senior Notes, Due December 3, 2038</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">50.0<span></span>
</td>
<td class="nump">50.0<span></span>
</td>
<td class="nump">50.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | 4.42% Senior Notes, Due October 15, 2044</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">50.0<span></span>
</td>
<td class="nump">50.0<span></span>
</td>
<td class="nump">50.0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_GraniteStateGasTransmissionIncMember', window );">Granite State Gas Transmission Inc | 7.15% Senior Notes, Due December 15, 2018</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">3.3<span></span>
</td>
<td class="nump">3.3<span></span>
</td>
<td class="nump">6.7<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_GraniteStateGasTransmissionIncMember', window );">Granite State Gas Transmission Inc | 3.72% Senior Notes, Due November 1, 2027</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="nump">$ 15.0<span></span>
</td>
<td class="nump">$ 15.0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_UnitilRealtyCorpMember', window );">Unitil Realty Corp | 8.00% Senior Secured Notes, Due August 1, 2017</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCarryingAmount', window );">Total Long-Term Debt</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 0.2<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentCarryingAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(22))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(16))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(16))<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentCarryingAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(16))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(16))<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(22))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LongTermDebt</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<td><strong> Period Type:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19,20)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LongTermDebtCurrent</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.22)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LongTermDebtNoncurrent</td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.17)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UnamortizedDebtIssuanceExpense</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointThreeThreePercentDueMayOneTwentyTwentyTwoMember</td>
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<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorUnsecuredNotesThreePointSevenZeroPercentDueAugustOneTwentyTwentySixMember</td>
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<td><strong> Name:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsFivePointTwoFourPercentSeniorSecuredNotesDueMarchTwoTwentyTwentyMember</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsEightPointFourNinePercentSeniorSecuredNotesDueOctoberFourteenTwentyTwentyFourMember</td>
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<td><strong> Data Type:</strong></td>
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<tr>
<td><strong> Name:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<tr>
<td><strong> Name:</strong></td>
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<td><strong> Name:</strong></td>
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<tr>
<td><strong> Name:</strong></td>
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<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointSevenNinePercentDueOctoberFifteenTwentyTwentyFiveMember</td>
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<tr>
<td><strong> Name:</strong></td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointThreeSevenPercentDueJanuaryFifteenTwentyTwentyNineMember</td>
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>53
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<DESCRIPTION>IDEA: XBRL DOCUMENT
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<html>
<head>
<title></title>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6787345440">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Details on Long Term Debt (Parenthetical) (Detail)<br></strong></div></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="1">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Nov. 01, 2017</div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
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<td class="nump">6.33%<span></span>
</td>
<td class="nump">6.33%<span></span>
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</td>
<td class="text">May  01,  2022<span></span>
</td>
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</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<tr class="re">
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<td class="nump">3.70%<span></span>
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<td class="nump">3.70%<span></span>
</td>
<td class="nump">3.70%<span></span>
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<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
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</td>
<td class="text">Aug.  01,  2026<span></span>
</td>
<td class="text">Aug.  01,  2026<span></span>
</td>
<td class="text">Aug.  01,  2026<span></span>
</td>
</tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsFivePointTwoFourPercentSeniorSecuredNotesDueMarchTwoTwentyTwentyMember', window );">First Mortgage Bonds 5.24% Senior Secured Notes, Due March 2, 2020 | Unitil Energy Systems Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<td class="text">&#160;<span></span>
</td>
<td class="nump">5.24%<span></span>
</td>
<td class="nump">5.24%<span></span>
</td>
<td class="nump">5.24%<span></span>
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</tr>
<tr class="ro">
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</td>
<td class="text">Mar.  02,  2020<span></span>
</td>
<td class="text">Mar.  02,  2020<span></span>
</td>
<td class="text">Mar.  02,  2020<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsEightPointFourNinePercentSeniorSecuredNotesDueOctoberFourteenTwentyTwentyFourMember', window );">First Mortgage Bonds 8.49% Senior Secured Notes, Due October 14, 2024 | Unitil Energy Systems Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">8.49%<span></span>
</td>
<td class="nump">8.49%<span></span>
</td>
<td class="nump">8.49%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Oct. 14,  2024<span></span>
</td>
<td class="text">Oct. 14,  2024<span></span>
</td>
<td class="text">Oct. 14,  2024<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsSixPointNineSixPercentSeniorSecuredNotesDueSeptemberOneTwentyTwentyEightMember', window );">First Mortgage Bonds 6.96% Senior Secured Notes, Due September 1, 2028 | Unitil Energy Systems Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">6.96%<span></span>
</td>
<td class="nump">6.96%<span></span>
</td>
<td class="nump">6.96%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Sep.  01,  2028<span></span>
</td>
<td class="text">Sep.  01,  2028<span></span>
</td>
<td class="text">Sep.  01,  2028<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsEightPointZeroZeroPercentSeniorSecuredNotesDueMayOneTwentyThirtyOneMember', window );">First Mortgage Bonds 8.00% Senior Secured Notes, Due May 1, 2031 | Unitil Energy Systems Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">8.00%<span></span>
</td>
<td class="nump">8.00%<span></span>
</td>
<td class="nump">8.00%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">May  01,  2031<span></span>
</td>
<td class="text">May  01,  2031<span></span>
</td>
<td class="text">May  01,  2031<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsSixPointThreeTwoPercentSeniorSecuredNotesDueSeptemberFifteenTwentyThirtySixMember', window );">First Mortgage Bonds 6.32% Senior Secured Notes, Due September 15, 2036 | Unitil Energy Systems Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">6.32%<span></span>
</td>
<td class="nump">6.32%<span></span>
</td>
<td class="nump">6.32%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Sep. 15,  2036<span></span>
</td>
<td class="text">Sep. 15,  2036<span></span>
</td>
<td class="text">Sep. 15,  2036<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointSevenFivePercentDueNovemberThirtyTwentyTwentyThreeMember', window );">6.75% Senior Notes, Due November 30, 2023 | Fitchburg Gas and Electric Light Company</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">6.75%<span></span>
</td>
<td class="nump">6.75%<span></span>
</td>
<td class="nump">6.75%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Nov. 30,  2023<span></span>
</td>
<td class="text">Nov. 30,  2023<span></span>
</td>
<td class="text">Nov. 30,  2023<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointSevenNinePercentDueOctoberFifteenTwentyTwentyFiveMember', window );">6.79% Senior Notes, Due October 15, 2025 | Fitchburg Gas and Electric Light Company</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">6.79%<span></span>
</td>
<td class="nump">6.79%<span></span>
</td>
<td class="nump">6.79%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Oct. 15,  2025<span></span>
</td>
<td class="text">Oct. 15,  2025<span></span>
</td>
<td class="text">Oct. 15,  2025<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember', window );">3.52% Senior Notes, Due November 1, 2027 | Fitchburg Gas and Electric Light Company</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="nump">3.52%<span></span>
</td>
<td class="nump">3.52%<span></span>
</td>
<td class="nump">3.52%<span></span>
</td>
<td class="nump">3.52%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember', window );">3.52% Senior Notes, Due November 1, 2027 | Northern Utilities Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="nump">3.52%<span></span>
</td>
<td class="nump">3.52%<span></span>
</td>
<td class="nump">3.52%<span></span>
</td>
<td class="nump">3.52%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointThreeSevenPercentDueJanuaryFifteenTwentyTwentyNineMember', window );">7.37% Senior Notes, Due January 15, 2029 | Fitchburg Gas and Electric Light Company</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">7.37%<span></span>
</td>
<td class="nump">7.37%<span></span>
</td>
<td class="nump">7.37%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Jan. 15,  2029<span></span>
</td>
<td class="text">Jan. 15,  2029<span></span>
</td>
<td class="text">Jan. 15,  2029<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesFivePointNineZeroPercentDueDecemberFifteenTwentyThirtyMember', window );">5.90% Senior Notes, Due December 15, 2030 | Fitchburg Gas and Electric Light Company</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">5.90%<span></span>
</td>
<td class="nump">5.90%<span></span>
</td>
<td class="nump">5.90%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Dec. 15,  2030<span></span>
</td>
<td class="text">Dec. 15,  2030<span></span>
</td>
<td class="text">Dec. 15,  2030<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointNineEightPercentDueJuneOneTwentyThirtyOneMember', window );">7.98% Senior Notes, Due June 1, 2031 | Fitchburg Gas and Electric Light Company</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">7.98%<span></span>
</td>
<td class="nump">7.98%<span></span>
</td>
<td class="nump">7.98%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Jun.  01,  2031<span></span>
</td>
<td class="text">Jun.  01,  2031<span></span>
</td>
<td class="text">Jun.  01,  2031<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember', window );">4.32% Senior Notes, Due November 1, 2047 | Fitchburg Gas and Electric Light Company</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="nump">4.32%<span></span>
</td>
<td class="nump">4.32%<span></span>
</td>
<td class="nump">4.32%<span></span>
</td>
<td class="nump">4.32%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">Nov.  01,  2047<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember', window );">4.32% Senior Notes, Due November 1, 2047 | Northern Utilities Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="nump">4.32%<span></span>
</td>
<td class="nump">4.32%<span></span>
</td>
<td class="nump">4.32%<span></span>
</td>
<td class="nump">4.32%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">Nov.  01,  2047<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointNineFivePercentDueDecemberThreeTwentyEighteenMember', window );">6.95% Senior Notes, Due December 3, 2018 | Northern Utilities Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">6.95%<span></span>
</td>
<td class="nump">6.95%<span></span>
</td>
<td class="nump">6.95%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Dec.  03,  2018<span></span>
</td>
<td class="text">Dec.  03,  2018<span></span>
</td>
<td class="text">Dec.  03,  2018<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesFivePointTwoNinePercentDueMarchTwoTwentyTwentyMember', window );">5.29% Senior Notes, Due March 2, 2020 | Northern Utilities Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">5.29%<span></span>
</td>
<td class="nump">5.29%<span></span>
</td>
<td class="nump">5.29%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Mar.  02,  2020<span></span>
</td>
<td class="text">Mar.  02,  2020<span></span>
</td>
<td class="text">Mar.  02,  2020<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointSevenTwoPercentDueDecemberThreeTwentyThirtyEightMember', window );">7.72% Senior Notes, Due December 3, 2038 | Northern Utilities Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">7.72%<span></span>
</td>
<td class="nump">7.72%<span></span>
</td>
<td class="nump">7.72%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Dec.  03,  2038<span></span>
</td>
<td class="text">Dec.  03,  2038<span></span>
</td>
<td class="text">Dec.  03,  2038<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesFourPointFourTwoPercentDueOctoberFifteenTwentyFortyFourMember', window );">4.42% Senior Notes, Due October 15, 2044 | Northern Utilities Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">4.42%<span></span>
</td>
<td class="nump">4.42%<span></span>
</td>
<td class="nump">4.42%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Oct. 15,  2044<span></span>
</td>
<td class="text">Oct. 15,  2044<span></span>
</td>
<td class="text">Oct. 15,  2044<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointOneFivePercentDueDecemberFifteenTwentyEighteenMember', window );">7.15% Senior Notes, Due December 15, 2018 | Granite State Gas Transmission Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">7.15%<span></span>
</td>
<td class="nump">7.15%<span></span>
</td>
<td class="nump">7.15%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Dec. 15,  2018<span></span>
</td>
<td class="text">Dec. 15,  2018<span></span>
</td>
<td class="text">Dec. 15,  2018<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointSevenTwoPercentDueNovemberOneTwentyTwentySevenMember', window );">3.72% Senior Notes, Due November 1, 2027 | Granite State Gas Transmission Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="nump">3.72%<span></span>
</td>
<td class="nump">3.72%<span></span>
</td>
<td class="nump">3.72%<span></span>
</td>
<td class="nump">3.72%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorSecuredNotesEightPointZeroZeroPercentDueThroughAugustOneTwentySeventeenMember', window );">8.00% Senior Secured Notes, Due August 1, 2017 | Unitil Realty Corp</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">8.00%<span></span>
</td>
<td class="nump">8.00%<span></span>
</td>
<td class="nump">8.00%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt instrument due date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Aug.  01,  2017<span></span>
</td>
<td class="text">Aug.  01,  2017<span></span>
</td>
<td class="text">Aug.  01,  2017<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentInterestRateStatedPercentage">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Contractual interest rate for funds borrowed, under the debt agreement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.22(a)(1))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentInterestRateStatedPercentage</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentMaturityDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.22(a)(2))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentMaturityDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointThreeThreePercentDueMayOneTwentyTwentyTwoMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointThreeThreePercentDueMayOneTwentyTwentyTwoMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorUnsecuredNotesThreePointSevenZeroPercentDueAugustOneTwentyTwentySixMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorUnsecuredNotesThreePointSevenZeroPercentDueAugustOneTwentyTwentySixMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsFivePointTwoFourPercentSeniorSecuredNotesDueMarchTwoTwentyTwentyMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsFivePointTwoFourPercentSeniorSecuredNotesDueMarchTwoTwentyTwentyMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_UnitilEnergySystemsIncMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_UnitilEnergySystemsIncMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsEightPointFourNinePercentSeniorSecuredNotesDueOctoberFourteenTwentyTwentyFourMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsEightPointFourNinePercentSeniorSecuredNotesDueOctoberFourteenTwentyTwentyFourMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsSixPointNineSixPercentSeniorSecuredNotesDueSeptemberOneTwentyTwentyEightMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsSixPointNineSixPercentSeniorSecuredNotesDueSeptemberOneTwentyTwentyEightMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsEightPointZeroZeroPercentSeniorSecuredNotesDueMayOneTwentyThirtyOneMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsEightPointZeroZeroPercentSeniorSecuredNotesDueMayOneTwentyThirtyOneMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsSixPointThreeTwoPercentSeniorSecuredNotesDueSeptemberFifteenTwentyThirtySixMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_FirstMortgageBondsSixPointThreeTwoPercentSeniorSecuredNotesDueSeptemberFifteenTwentyThirtySixMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointSevenFivePercentDueNovemberThirtyTwentyTwentyThreeMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointSevenFivePercentDueNovemberThirtyTwentyTwentyThreeMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointSevenNinePercentDueOctoberFifteenTwentyTwentyFiveMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointSevenNinePercentDueOctoberFifteenTwentyTwentyFiveMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointThreeSevenPercentDueJanuaryFifteenTwentyTwentyNineMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointThreeSevenPercentDueJanuaryFifteenTwentyTwentyNineMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesFivePointNineZeroPercentDueDecemberFifteenTwentyThirtyMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesFivePointNineZeroPercentDueDecemberFifteenTwentyThirtyMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointNineEightPercentDueJuneOneTwentyThirtyOneMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointNineEightPercentDueJuneOneTwentyThirtyOneMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointNineFivePercentDueDecemberThreeTwentyEighteenMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesSixPointNineFivePercentDueDecemberThreeTwentyEighteenMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesFivePointTwoNinePercentDueMarchTwoTwentyTwentyMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesFivePointTwoNinePercentDueMarchTwoTwentyTwentyMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointSevenTwoPercentDueDecemberThreeTwentyThirtyEightMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointSevenTwoPercentDueDecemberThreeTwentyThirtyEightMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesFourPointFourTwoPercentDueOctoberFifteenTwentyFortyFourMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesFourPointFourTwoPercentDueOctoberFifteenTwentyFortyFourMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<td><strong> Balance Type:</strong></td>
<td></td>
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<td><strong> Period Type:</strong></td>
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</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointOneFivePercentDueDecemberFifteenTwentyEighteenMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointOneFivePercentDueDecemberFifteenTwentyEighteenMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
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</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_GraniteStateGasTransmissionIncMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_GraniteStateGasTransmissionIncMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointSevenTwoPercentDueNovemberOneTwentyTwentySevenMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointSevenTwoPercentDueNovemberOneTwentyTwentySevenMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorSecuredNotesEightPointZeroZeroPercentDueThroughAugustOneTwentySeventeenMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorSecuredNotesEightPointZeroZeroPercentDueThroughAugustOneTwentySeventeenMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
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</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_UnitilRealtyCorpMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_UnitilRealtyCorpMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
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</html>
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>54
<FILENAME>R40.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6772988544">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Estimated Fair Value of Long Term Debt (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member', window );">Fair Value, Inputs, Level 2</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtFairValue', window );">Estimated Fair Value of Long-Term Debt</a></td>
<td class="nump">$ 428.0<span></span>
</td>
<td class="nump">$ 457.1<span></span>
</td>
<td class="nump">$ 374.3<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentLineItems</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LongTermDebtFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LongTermDebtFairValue</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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</div>
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</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>55
<FILENAME>R41.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6787895536">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Debt and Financing Arrangements - Additional Information (Detail) - USD ($)<br></strong></div></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="1">12 Months Ended</th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Nov. 01, 2017</div></th>
<th class="th"><div>Oct. 04, 2013</div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Oct. 30, 2015</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityLineItems', window );"><strong>Line of Credit Facility [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShortTermDebtWeightedAverageInterestRate', window );">Weighted average interest rate on short term borrowings</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">2.90%<span></span>
</td>
<td class="nump">2.10%<span></span>
</td>
<td class="nump">2.40%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredFinanceCostsNoncurrentNet', window );">Issuance of long-term debt</a></td>
<td class="nump">$ 700,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalLeaseObligationsCurrent', window );">Capital lease obligation, current</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 3,100,000<span></span>
</td>
<td class="nump">$ 3,000,000<span></span>
</td>
<td class="nump">$ 3,100,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalLeaseObligationsNoncurrent', window );">Capital lease obligation, noncurrent</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">4,900,000<span></span>
</td>
<td class="nump">7,500,000<span></span>
</td>
<td class="nump">5,700,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsPayableCurrent', window );">Accounts Payable</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">30,100,000<span></span>
</td>
<td class="nump">28,100,000<span></span>
</td>
<td class="nump">41,500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_LetterOfCreditFacilityAndBankGuaranteesOutstanding', window );">Guarantee outstanding</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 17,900,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_UnitilServiceCorpMember', window );">Unitil Service Corp.</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityLineItems', window );"><strong>Line of Credit Facility [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalLeaseObligations', window );">Capital lease obligation, total capitalized cost</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 13,400,000<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_CapitalLeasesTerminationDate', window );">Capital lease obligation, maturity period</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Sep. 30,  2020<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalLeaseObligationsCurrent', window );">Capital lease obligation, current</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 2,700,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalLeaseObligationsNoncurrent', window );">Capital lease obligation, noncurrent</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">4,400,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityLineItems', window );"><strong>Line of Credit Facility [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EnergyRelatedInventoryNaturalGasInStorage', window );">Natural gas storage inventory</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,000,000<span></span>
</td>
<td class="nump">3,800,000<span></span>
</td>
<td class="nump">8,500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsPayableCurrent', window );">Accounts Payable</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,000,000<span></span>
</td>
<td class="nump">2,000,000<span></span>
</td>
<td class="nump">3,100,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember', window );">Revolving Credit Facility</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityLineItems', window );"><strong>Line of Credit Facility [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity', window );">Revolving credit facility</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">120,000,000<span></span>
</td>
<td class="nump">120,000,000<span></span>
</td>
<td class="nump">$ 120,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromLinesOfCredit', window );">Proceeds from lines of credit</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 88,900,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RepaymentsOfLinesOfCredit', window );">Repayments of lines of credit</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 81,900,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_CreditFacilityMember', window );">Credit Facility | Revolving Credit Facility</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityLineItems', window );"><strong>Line of Credit Facility [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity', window );">Revolving credit facility</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 120,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SublimitForIssuanceOfStandbyLettersOfCredit', window );">Sublimit for the issuance of standby letters of credit</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">25,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_LineOfCreditFacilityMaximumIncreaseToAggregateCommitments', window );">Credit Facility by an aggregate additional amount</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 30,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityExpirationDate1', window );">Revolving credit facility termination date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Oct.  04,  2020<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCovenantDescription', window );">Percentage of capitalization</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">The affirmative and negative covenants under the Credit Facility shall apply until the Credit Facility terminates and all amounts borrowed under the Credit Facility are paid in full (or with respect to letters of credit, they are cash collateralized). The only financial covenant in the Credit Facility provides that Funded Debt to Capitalization (as each term is defined in the Credit Facility) cannot exceed 65%, tested on a quarterly basis. At March 31, 2018, March 31, 2017 and December 31, 2017, the Company was in compliance with the covenants contained in the Credit Facility in effect on that date.<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_CreditFacilityMember', window );">Credit Facility | Revolving Credit Facility | London Interbank Offered Rate (LIBOR)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityLineItems', window );"><strong>Line of Credit Facility [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1', window );">Credit facility, daily fluctuating rate of interest</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1.25%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointOneFivePercentDueDecemberFifteenTwentyEighteenMember', window );">7.15% Senior Notes, Due December 15, 2018 | Granite State Gas Transmission Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityLineItems', window );"><strong>Line of Credit Facility [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Long-term debt, maturity date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Dec. 15,  2018<span></span>
</td>
<td class="text">Dec. 15,  2018<span></span>
</td>
<td class="text">Dec. 15,  2018<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Long-term debt, stated interest rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">7.15%<span></span>
</td>
<td class="nump">7.15%<span></span>
</td>
<td class="nump">7.15%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SeniorNotes', window );">Senior Notes</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 3,300,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember', window );">3.52% Senior Notes, Due November 1, 2027 | Northern Utilities Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityLineItems', window );"><strong>Line of Credit Facility [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentFaceAmount', window );">Long-term debt, aggregate principal amount</a></td>
<td class="nump">$ 20,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Long-term debt, maturity date</a></td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Long-term debt, stated interest rate</a></td>
<td class="nump">3.52%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3.52%<span></span>
</td>
<td class="nump">3.52%<span></span>
</td>
<td class="nump">3.52%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember', window );">3.52% Senior Notes, Due November 1, 2027 | Fitchburg Gas and Electric Light Company</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityLineItems', window );"><strong>Line of Credit Facility [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentFaceAmount', window );">Long-term debt, aggregate principal amount</a></td>
<td class="nump">$ 10,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Long-term debt, maturity date</a></td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Long-term debt, stated interest rate</a></td>
<td class="nump">3.52%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3.52%<span></span>
</td>
<td class="nump">3.52%<span></span>
</td>
<td class="nump">3.52%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember', window );">4.32% Senior Notes, Due November 1, 2047 | Northern Utilities Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityLineItems', window );"><strong>Line of Credit Facility [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentFaceAmount', window );">Long-term debt, aggregate principal amount</a></td>
<td class="nump">$ 30,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Long-term debt, maturity date</a></td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Long-term debt, stated interest rate</a></td>
<td class="nump">4.32%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">4.32%<span></span>
</td>
<td class="nump">4.32%<span></span>
</td>
<td class="nump">4.32%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember', window );">4.32% Senior Notes, Due November 1, 2047 | Fitchburg Gas and Electric Light Company</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityLineItems', window );"><strong>Line of Credit Facility [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentFaceAmount', window );">Long-term debt, aggregate principal amount</a></td>
<td class="nump">$ 15,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Long-term debt, maturity date</a></td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">Nov.  01,  2047<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Long-term debt, stated interest rate</a></td>
<td class="nump">4.32%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">4.32%<span></span>
</td>
<td class="nump">4.32%<span></span>
</td>
<td class="nump">4.32%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointSevenTwoPercentDueNovemberOneTwentyTwentySevenMember', window );">3.72% Senior Notes, Due November 1, 2027 | Granite State Gas Transmission Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityLineItems', window );"><strong>Line of Credit Facility [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentFaceAmount', window );">Long-term debt, aggregate principal amount</a></td>
<td class="nump">$ 15,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Long-term debt, maturity date</a></td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">Nov.  01,  2027<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Long-term debt, stated interest rate</a></td>
<td class="nump">3.72%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3.72%<span></span>
</td>
<td class="nump">3.72%<span></span>
</td>
<td class="nump">3.72%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19(a))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsPayableCurrent</td>
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<tr>
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<td>credit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=84164817&amp;loc=d3e45280-112737<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(22))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(16))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CapitalLeaseObligations</td>
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<tr>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CapitalLeaseObligationsCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of capital lease obligation due within one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=84164817&amp;loc=d3e45280-112737<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(19))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=84164758&amp;loc=d3e45023-112735<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CapitalLeaseObligationsCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CapitalLeaseObligationsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=84164817&amp;loc=d3e45280-112737<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=84164758&amp;loc=d3e45023-112735<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.22)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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</div></td></tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage points added to the reference rate to compute the variable rate on the debt instrument.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentBasisSpreadOnVariableRate1</td>
</tr>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr>
<td><strong> Balance Type:</strong></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentCovenantDescription">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(22))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 470<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (g)<br> -URI http://asc.fasb.org/extlink&amp;oid=75038535&amp;loc=d3e64711-112823<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentCovenantDescription</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
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</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentFaceAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Face (par) amount of debt instrument at time of issuance.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 30<br> -Section 55<br> -Paragraph 8<br> -URI http://asc.fasb.org/extlink&amp;oid=64930739&amp;loc=d3e28878-108400<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 30<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=64930785&amp;loc=d3e28551-108399<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentFaceAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentInterestRateStatedPercentage">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Contractual interest rate for funds borrowed, under the debt agreement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.22(a)(1))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentInterestRateStatedPercentage</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentMaturityDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.22(a)(2))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentMaturityDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredFinanceCostsNoncurrentNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 30<br> -Section 45<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=64930785&amp;loc=d3e28555-108399<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.17)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredFinanceCostsNoncurrentNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EnergyRelatedInventoryNaturalGasInStorage">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying amount as of the balance sheet date of natural gas in storage, which is a mixture of gases (liquefied or otherwise), used for fuel and manufacturing purposes, which is ready for sale.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.6(a))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EnergyRelatedInventoryNaturalGasInStorage</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LineOfCreditFacilityExpirationDate1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Date the credit facility terminates, in CCYY-MM-DD format.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19(b),22(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LineOfCreditFacilityExpirationDate1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LineOfCreditFacilityLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LineOfCreditFacilityLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19(b),22(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromLinesOfCredit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3255-108585<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08.(f))<br> -URI http://asc.fasb.org/extlink&amp;oid=26873400&amp;loc=d3e23780-122690<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromLinesOfCredit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RepaymentsOfLinesOfCredit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 15<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3291-108585<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08.(f))<br> -URI http://asc.fasb.org/extlink&amp;oid=26873400&amp;loc=d3e23780-122690<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RepaymentsOfLinesOfCredit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SeniorNotes">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03.16(a))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03.16)<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SeniorNotes</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShortTermDebtWeightedAverageInterestRate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted average interest rate of short-term debt outstanding calculated at point in time.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShortTermDebtWeightedAverageInterestRate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_CapitalLeasesTerminationDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Capital Leases Termination Date</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_CapitalLeasesTerminationDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_LetterOfCreditFacilityAndBankGuaranteesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Corporate guarantees on energy and natural gas storage management contracts entered into by the Company's distribution utilities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_LetterOfCreditFacilityAndBankGuaranteesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_LineOfCreditFacilityMaximumIncreaseToAggregateCommitments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line Of Credit Facility Maximum Increase To Aggregate Commitments.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_LineOfCreditFacilityMaximumIncreaseToAggregateCommitments</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_SublimitForIssuanceOfStandbyLettersOfCredit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Sublimit For Issuance Of Standby Letters Of Credit.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_SublimitForIssuanceOfStandbyLettersOfCredit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_UnitilServiceCorpMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_UnitilServiceCorpMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_CreditFacilityMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_CreditFacilityMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointOneFivePercentDueDecemberFifteenTwentyEighteenMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesSevenPointOneFivePercentDueDecemberFifteenTwentyEighteenMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_GraniteStateGasTransmissionIncMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_GraniteStateGasTransmissionIncMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointFiveTwoPercentDueNovemberOneTwentyTwentySevenMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesFourPointThreeTwoPercentDueNovemberOneTwentyFortySevenMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointSevenTwoPercentDueNovemberOneTwentyTwentySevenMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=utl_SeniorNotesThreePointSevenTwoPercentDueNovemberOneTwentyTwentySevenMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
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</html>
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>56
<FILENAME>R42.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6925953264">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Borrowing Limits Amounts Outstanding and Amounts Available under Revolving Credit Facility (Detail) - USD ($)<br></strong></div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShortTermBorrowings', window );">Short-Term Borrowings Outstanding</a></td>
<td class="nump">$ 45,300,000<span></span>
</td>
<td class="nump">$ 38,300,000<span></span>
</td>
<td class="nump">$ 76,600,000<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember', window );">Revolving Credit Facility</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentLineItems', window );"><strong>Debt Instrument [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity', window );">Revolving credit facility, limit</a></td>
<td class="nump">120,000,000<span></span>
</td>
<td class="nump">120,000,000<span></span>
</td>
<td class="nump">120,000,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShortTermBorrowings', window );">Short-Term Borrowings Outstanding</a></td>
<td class="nump">45,300,000<span></span>
</td>
<td class="nump">38,300,000<span></span>
</td>
<td class="nump">76,600,000<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LettersOfCreditOutstandingAmount', window );">Letters of Credit Outstanding</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="nump">1,100,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity', window );">Available revolving credit facility</a></td>
<td class="nump">$ 74,700,000<span></span>
</td>
<td class="nump">$ 81,700,000<span></span>
</td>
<td class="nump">$ 42,300,000<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LettersOfCreditOutstandingAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LettersOfCreditOutstandingAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19(b),22(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19(b),22(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShortTermBorrowings">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(19)(a))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(13))<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(16)(a)(1))<br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShortTermBorrowings</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6783353408">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Common Stock And Preferred Stock - Additional Information (Detail) - USD ($)<br></strong></div></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="1">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jan. 29, 2018</div></th>
<th class="th"><div>Dec. 14, 2017</div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Class of Stock [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesOutstanding', window );">Common stock, shares outstanding</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">14,860,123<span></span>
</td>
<td class="nump">14,107,741<span></span>
</td>
<td class="nump">14,815,585<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesNewIssues', window );">Common stock, shares issued</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">7,812<span></span>
</td>
<td class="nump">7,581<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfCommonStock', window );">Proceeds from Issuance of Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 300,000<span></span>
</td>
<td class="nump">$ 300,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RestrictedStockExpense', window );">Share based compensation expense</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1,800,000<span></span>
</td>
<td class="nump">1,700,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCommonSharesWhenSettled', window );">Percentage of fully-vested restricted stock units that directors will receive in common shares when settled</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">70.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCashWhenSettled', window );">Percentage of fully-vested restricted stock units that directors will receive in cash when settled</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">30.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_FairValueOfRestrictedStockUnitsSettledInCash', window );">Fair value of liabilities associated with fully vested RSUs that will be settled in cash</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1,000,000<span></span>
</td>
<td class="nump">800,000<span></span>
</td>
<td class="nump">$ 1,000,000<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockValue', window );">Preferred Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">200,000<span></span>
</td>
<td class="nump">200,000<span></span>
</td>
<td class="nump">$ 200,000<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RangeAxis=us-gaap_MaximumMember', window );">Maximum</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Class of Stock [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPreferredStock', window );">Dividend declared</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">100,000<span></span>
</td>
<td class="nump">$ 100,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SubsidiarySaleOfStockAxis=utl_RegisteredPublicOfferingMember', window );">Registered Public Offering</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Class of Stock [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfCommonStock', window );">Proceeds from Issuance of Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 31,700,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SubsidiarySaleOfStockAxis=utl_RegisteredPublicOfferingMember', window );">Registered Public Offering | Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Class of Stock [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesNewIssues', window );">Common stock, shares issued</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">690,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SharesIssuedPricePerShare', window );">Common stock price per share</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 48.30<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SubsidiarySaleOfStockAxis=utl_DividendAndDistributionReinvestmentAndSharePurchasePlanMember', window );">Dividend and Distribution Reinvestment and Share Purchase Plan</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Class of Stock [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfCommonStock', window );">Proceeds from Issuance of Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 341,500<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SubsidiarySaleOfStockAxis=utl_DividendAndDistributionReinvestmentAndSharePurchasePlanMember', window );">Dividend and Distribution Reinvestment and Share Purchase Plan | Average</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Class of Stock [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SharesIssuedPricePerShare', window );">Common stock price per share</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 43.71<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SubsidiarySaleOfStockAxis=utl_DividendAndDistributionReinvestmentAndSharePurchasePlanMember', window );">Dividend and Distribution Reinvestment and Share Purchase Plan | Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Class of Stock [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesNewIssues', window );">Common stock, shares issued</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">7,812<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_UnitilEnergySystemsIncMember', window );">Unitil Energy Systems Inc | Series 6</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Class of Stock [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockSharesOutstanding', window );">Preferred stock, outstanding</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,893<span></span>
</td>
<td class="nump">1,893<span></span>
</td>
<td class="nump">1,893<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockValue', window );">Preferred Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 200,000<span></span>
</td>
<td class="nump">$ 200,000<span></span>
</td>
<td class="nump">$ 200,000<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockDividendRatePercentage', window );">Dividend rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">6.00%<span></span>
</td>
<td class="nump">6.00%<span></span>
</td>
<td class="nump">6.00%<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember', window );">Restricted Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Class of Stock [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1', window );">Restricted stock vesting period</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">4 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonvestedOptionsOutstandingNumber', window );">Restricted stock non-vested</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">90,882<span></span>
</td>
<td class="nump">94,880<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedInPeriodWeightedAverageGrantDateFairValue', window );">Restricted stock weighted average grant date fair value</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 41.93<span></span>
</td>
<td class="nump">$ 39.55<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions', window );">Unrecognized share based compensation</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1,300,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1', window );">Share compensation recognition period</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">2 years 9 months 18 days<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod', window );">Restricted Stock Units Granted</a></td>
<td class="nump">37,510<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodAggregateIntrinsicValue', window );">Aggregate Market Value</a></td>
<td class="nump">$ 1,600,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod', window );">Forfeitures under the stock plan</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">784<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledInPeriod', window );">Cancellations under the stock plan</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember', window );">Restricted Stock | Maximum</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Class of Stock [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized', window );">Restricted stock available for awards</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">677,500<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant', window );">Restricted stock that may be awarded in any one calendar year to any one participant</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">20,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember', window );">Restricted Stock | Vesting Annually</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Class of Stock [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage', window );">Restricted stock vesting percentage annually</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">25.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember', window );">Restricted Stock Units (RSUs)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ClassOfStockLineItems', window );"><strong>Class of Stock [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod', window );">Restricted Stock Units Granted</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber', window );">Restricted stock units outstanding</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">43,696<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SharebasedCompensationArrangementBySharebasedPaymentAwardsEquityInstrumentOtherThanOptionsOutstandingWeightedAverageExercisePrice', window );">Weighted-Average Stock Price</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 33.49<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfStockLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfStockLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockSharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=84159872&amp;loc=d3e21463-112644<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockSharesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendsPreferredStock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 405<br> -Section 45<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=6957935&amp;loc=d3e64057-112817<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=27012166&amp;loc=d3e187085-122770<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DividendsPreferredStock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (i)<br> -URI http://asc.fasb.org/extlink&amp;oid=96867065&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Unrecognized cost of unvested options awarded to employees as compensation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (i)<br> -URI http://asc.fasb.org/extlink&amp;oid=96867065&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockDividendRatePercentage">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The percentage rate used to calculate dividend payments on preferred stock.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockDividendRatePercentage</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockSharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockSharesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromIssuanceOfCommonStock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash inflow from the additional capital contribution to the entity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3255-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromIssuanceOfCommonStock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RestrictedStockExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RestrictedStockExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=96867065&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)(iii)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=96867065&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of equity instruments other than options outstanding, including both vested and non-vested instruments.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(i)<br> -URI http://asc.fasb.org/extlink&amp;oid=96867065&amp;loc=d3e5070-113901<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(ii)<br> -URI http://asc.fasb.org/extlink&amp;oid=96867065&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(3)<br> -URI http://asc.fasb.org/extlink&amp;oid=96867065&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=96867065&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iv)(3)<br> -URI http://asc.fasb.org/extlink&amp;oid=96867065&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage of vesting of share-based compensation awards.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=96867065&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharesIssuedPricePerShare">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Per share or per unit amount of equity securities issued.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharesIssuedPricePerShare</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodSharesNewIssues">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of new stock issued during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=84159872&amp;loc=d3e21463-112644<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=27012166&amp;loc=d3e187085-122770<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodSharesNewIssues</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_FairValueOfRestrictedStockUnitsSettledInCash">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Fair Value of Restricted Stock Units to be settled in cash.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_FairValueOfRestrictedStockUnitsSettledInCash</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCashWhenSettled">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage of fully-vested restricted stock units that Directors will receive in cash when settled.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCashWhenSettled</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCommonSharesWhenSettled">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage of fully-vested restricted stock units that Directors will receive in common shares when settled.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_PercentageOfFullyVestedRestrictedStockUnitsThatDirectorsWillReceiveInCommonSharesWhenSettled</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodAggregateIntrinsicValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Grants in Period, Aggregate Intrinsic Value</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodAggregateIntrinsicValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedInPeriodWeightedAverageGrantDateFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Share based Compensation Arrangement by Share based Payment Award, Equity Instruments Other than Options, Nonvested in Period, Weighted Average Grant Date Fair Value.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedInPeriodWeightedAverageGrantDateFairValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonvestedOptionsOutstandingNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Share Based Compensation Arrangement by Share Based Payment Award, Nonvested Shares, Outstanding, Number.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonvestedOptionsOutstandingNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledInPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Share Based Compensation Arrangement by Share Based Payment Award, Options, Cancelled in Period</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledInPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_SharebasedCompensationArrangementBySharebasedPaymentAwardsEquityInstrumentOtherThanOptionsOutstandingWeightedAverageExercisePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Share-based Compensation Arrangement by Share-based Payment Awards Equity Instrument Other than Options Outstanding Weighted Average Exercise Price</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_SharebasedCompensationArrangementBySharebasedPaymentAwardsEquityInstrumentOtherThanOptionsOutstandingWeightedAverageExercisePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RangeAxis=us-gaap_MaximumMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RangeAxis=us-gaap_MaximumMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SubsidiarySaleOfStockAxis=utl_RegisteredPublicOfferingMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
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<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementEquityComponentsAxis=utl_SeriesSixMember</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
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<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember</td>
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</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>58
<FILENAME>R44.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6923466592">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Restricted Stock Units Issued (Detail) - Restricted Stock Units (RSUs)<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th">
<div>Mar. 31, 2018 </div>
<div>$ / shares </div>
<div>shares</div>
</th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward', window );"><strong>Restricted Stock Units</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedNumber', window );">Beginning Restricted Stock Units | shares</a></td>
<td class="nump">52,224<span></span>
</td>
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<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod', window );">Restricted Stock Units Granted | shares</a></td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentRightsInPeriod', window );">Dividend Equivalents Earned | shares</a></td>
<td class="nump">453<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettled', window );">Restricted Stock Units Settled | shares</a></td>
<td class="nump">0<span></span>
</td>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedNumber', window );">Ending Restricted Stock Units | shares</a></td>
<td class="nump">52,677<span></span>
</td>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward', window );"><strong>Weighted-Average Stock Price</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedWeightedAverageGrantDateFairValue', window );">Beginning Restricted Stock Units | $ / shares</a></td>
<td class="nump">$ 36.22<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedGrantsInPeriodWeightedAverageGrantDateFairValue', window );">Restricted Stock Units Granted | $ / shares</a></td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedDividendEquivalentRightsInPeriodWeightedAverageGrantDateFairValue', window );">Dividend Equivalents Earned | $ / shares</a></td>
<td class="nump">42.04<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettledInPeriodWeightedAverageGrantDateFairValue', window );">Restricted Stock Units Settled | $ / shares</a></td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedWeightedAverageGrantDateFairValue', window );">Ending Restricted Stock Units | $ / shares</a></td>
<td class="nump">$ 36.27<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)(iii)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=96867065&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedGrantsInPeriodWeightedAverageGrantDateFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Fully Vested Grants in Period, Weighted Average Grant Date Fair Value.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedGrantsInPeriodWeightedAverageGrantDateFairValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettled">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Fully Vested Settled.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettled</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettledInPeriodWeightedAverageGrantDateFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Fully Vested Settled in Period, Weighted Average Grant Date Fair Value.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedSettledInPeriodWeightedAverageGrantDateFairValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedWeightedAverageGrantDateFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Fully Vested, Weighted Average Grant Date Fair Value</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedWeightedAverageGrantDateFairValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentRightsInPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Share Based Payment Award Equity Instruments Other Than Options Dividend Equivalent Rights In Period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentRightsInPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedDividendEquivalentRightsInPeriodWeightedAverageGrantDateFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Share Based Payment Award Equity Instruments Other Than Options Fully Vested Dividend Equivalent Rights In Period Weighted Average Grant Date Fair Value.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedDividendEquivalentRightsInPeriodWeightedAverageGrantDateFairValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Fully Vested, Number</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsFullyVestedNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
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<FILENAME>R45.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
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<html>
<head>
<title></title>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6799495936">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Regulatory Matters - Additional Information (Detail)<br></strong></div></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
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<th class="th" colspan="1"></th>
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<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1">1 Months Ended</th>
<th class="th" colspan="1">3 Months Ended</th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
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<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th">
<div>May 01, 2019 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>May 01, 2018 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Apr. 06, 2018 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Mar. 16, 2018 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Feb. 28, 2018 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Dec. 20, 2017 </div>
<div>USD ($)</div>
</th>
<th class="th"><div>Oct. 31, 2017</div></th>
<th class="th">
<div>Aug. 25, 2017 </div>
<div>MW</div>
</th>
<th class="th">
<div>Jul. 31, 2017 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Jun. 21, 2017 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Jun. 05, 2017 </div>
<div>USD ($)</div>
</th>
<th class="th"><div>Apr. 28, 2017</div></th>
<th class="th">
<div>Apr. 20, 2017 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Oct. 31, 2016 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Apr. 29, 2016 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Apr. 15, 2015 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>May 31, 2017 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Mar. 31, 2018 </div>
<div>USD ($) </div>
<div>State </div>
<div>Customer</div>
</th>
<th class="th">
<div>Jun. 30, 2027 </div>
<div>MW</div>
</th>
<th class="th">
<div>Dec. 31, 2022 </div>
<div>MWh</div>
</th>
<th class="th">
<div>Jun. 01, 2018 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Dec. 31, 2017 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Jun. 30, 2017 </div>
<div>MW</div>
</th>
<th class="th">
<div>Jun. 23, 2017 </div>
<div>kW</div>
</th>
<th class="th">
<div>Mar. 31, 2017 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Aug. 19, 2016 </div>
<div>MW</div>
</th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate', window );">Corporate income tax rate</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">21.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilityCurrent', window );">Current Portion of Regulatory Liabilities</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 10,900,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 9,200,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 12,800,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PowerCapacityFacilityForSmallCustomers', window );">Power capacity facility for small customers | kW</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">100<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue', window );">Increase (decrease) in annual revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1,600,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 6,000,000<span></span>
</td>
<td class="nump">$ 700,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PublicUtilitiesApprovedRateIncreaseDecreaseEffectiveDate', window );">Amendment effective date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Aug.  01,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegistrationPaymentArrangementTerm', window );">TIRA initial term</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Four years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredCostsCurrentAndNoncurrent', window );">Deferred cost</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1,100,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromLegalSettlements', window );">Pipeline refund received</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 22,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">21,400,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilityCurrent', window );">Current Portion of Regulatory Liabilities</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">600,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | Subsequent Event</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue', window );">Increase (decrease) in annual revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 2,600,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | Revenue Offset [Member] | Subsequent Event</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue', window );">Increase (decrease) in annual revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">$ (1,700,000)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | Scenario Forecast</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue', window );">Increase (decrease) in annual revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 0.9<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_RevenueAdjustment', window );">Annual revenue adjustment</a></td>
<td class="nump">$ 2,200,000<span></span>
</td>
<td class="nump">$ 2,300,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | Maine</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue', window );">Increase (decrease) in annual revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 2,100,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">$ (100,000)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage', window );">Percentage of approved return on equity</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">9.50%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesApprovedEquityCapitalStructurePercentage', window );">Percentage of approved return on equity, reflecting on equity</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">50.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PublicUtilitiesApprovedDebtCapitalStructurePercentage', window );">Percentage of approved return on equity, reflecting on debt</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">50.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_IncreaseDecreaseInOperatingCosts', window );">Reduction of annual operating costs</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">$ (500,000)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_RegistrationPaymentArrangementExtensionTerm', window );">TIRA extended term</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">8 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_ConstructionCompletionPeriod', window );">Construction completion period</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">3 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_NumberOfNewCustomers', window );">Number of new customers | Customer</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PotentialRegulatedOperatingRevenue', window );">Potential regulated operating revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_GracePeriodForIssuingOrReceivingRefunds', window );">Grace period to receive refund</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">3 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | Maine | Second TAB program</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_NumberOfNewCustomers', window );">Number of new customers | Customer</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">2,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PotentialRegulatedOperatingRevenue', window );">Potential regulated operating revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 2,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | Maine | Revenue Offset [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue', window );">Increase (decrease) in annual revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">$ (2,200,000)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | New Hampshire</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_GracePeriodForIssuingOrReceivingRefunds', window );">Grace period to receive refund</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">3 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc | New Hampshire | Natural Gas Distribution</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue', window );">Increase (decrease) in annual revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 4,700,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_GraniteStateGasTransmissionIncMember', window );">Granite State Gas Transmission Inc | Gas Transportation and Storage</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue', window );">Increase (decrease) in annual revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 200,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PublicUtilitiesApprovedRateIncreaseDecreaseEffectiveDate', window );">Amendment effective date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Aug.  01,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Jul. 28,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_UnitilEnergySystemsIncMember', window );">Unitil Energy Systems Inc | New Hampshire</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue', window );">Increase (decrease) in annual revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 400,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PermanentAdjustmentForRateIncrease', window );">Permanent rate increase</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 4,100,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_UnitilEnergySystemsIncMember', window );">Unitil Energy Systems Inc | New Hampshire | First Rate Step Adjustments</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PermanentAdjustmentForRateIncrease', window );">Permanent rate increase</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 900,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue', window );">Increase (decrease) in annual revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="num">$ (800,000)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetRecoveryDamagedPropertyCostsNoncurrent', window );">Recovery amount</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 900,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PercentageOfWaiverApproved', window );">Percentage of waiver approved on annual changes in the revenue requirement eligible for recovery</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1.50%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_AmendmentEffectiveDate', window );">Amendment effective date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">May  01,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_DeferredRegulatoryClauseRevenue', window );">Revenues sought approval to collect, deferred for recovery in future periods</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 400,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PercentageOfWaiverSought', window );">Percentage of waiver sought on annual changes in the revenue requirement eligible for recovery</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1.50%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NumberOfStatesInWhichEntityOperates', window );">Number of states with electric distribution companies | State</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | Solar Generation</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_FacilityPowerCapacity', window );">Power generation facility | MW</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1.3<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | Minimum | Offshore Wind Energy</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_FacilityPowerCapacity', window );">Power generation facility | MW</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">400<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | Solar Massachusetts Renewable Target Program | Solar Generation</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_GeneratingCapacity', window );">Power generation capacity | MW</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,600<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | Scenario Forecast</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PowerGenerationCapacity', window );">Power generation capacity | MWh</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">9,450,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | Scenario Forecast | Solar Generation</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetRecoveryDamagedPropertyCostsNoncurrent', window );">Recovery amount</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 300,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | Scenario Forecast | Offshore Wind Energy</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_FacilityPowerCapacity', window );">Power generation facility | MW</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,600<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | Electric base</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue', window );">Increase (decrease) in annual revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 2,100,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PublicUtilitiesApprovedRateIncreaseDecreaseEffectiveDate', window );">Amendment effective date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Jan.  01,  2018<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">May  01,  2016<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">Jan.  01,  2017<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_RevenueAdjustment', window );">Annual revenue adjustment</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 400,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company | Gas base</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryAssetLineItems', window );"><strong>Regulatory Assets [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue', window );">Increase (decrease) in annual revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1,600,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_PublicUtilitiesApprovedRateIncreaseDecreaseEffectiveDate', window );">Amendment effective date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">May  01,  2016<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetRecoveryDamagedPropertyCostsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying amount as of the balance sheet date of the portion of the reserved funds established by a utility from customer payments to cover the repair costs of damages from major storms, which repairs are expected to be incurred beyond one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 340<br> -Section 25<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=77907324&amp;loc=d3e43603-110378<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetRecoveryDamagedPropertyCostsNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredCostsCurrentAndNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The carrying amount of deferred costs.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredCostsCurrentAndNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage of domestic federal statutory tax rate applicable to pretax income (loss).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 12<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32687-109319<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB TOPIC 6.I)<br> -URI http://asc.fasb.org/extlink&amp;oid=34349781&amp;loc=d3e330036-122817<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 13<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32698-109319<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in unrecovered fuel costs for a regulated utility company.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInRegulatoryClauseRevenue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NumberOfStatesInWhichEntityOperates">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of states the entity operates in as of the balance sheet date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NumberOfStatesInWhichEntityOperates</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:integerItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromLegalSettlements">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Cash received for the settlement of litigation during the current period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 25<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=98514028&amp;loc=d3e3536-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromLegalSettlements</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesApprovedDebtCapitalStructurePercentage">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage of public utility's approved debt to capital, including debt and equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesApprovedDebtCapitalStructurePercentage</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesApprovedEquityCapitalStructurePercentage">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage of public utility's approved equity to capital, including debt and equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesApprovedEquityCapitalStructurePercentage</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage of public utility's approved return on equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegistrationPaymentArrangementTerm">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Describes the term of the registration payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=6449706&amp;loc=d3e16207-108621<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegistrationPaymentArrangementTerm</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssetLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssetLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilityCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 405<br> -Section 25<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6500807&amp;loc=d3e48068-110394<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilityCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_AmendmentEffectiveDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Effective date of rates resulting from rate case.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_AmendmentEffectiveDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_ConstructionCompletionPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Construction Completion Period</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_ConstructionCompletionPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_DeferredRegulatoryClauseRevenue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Deferred regulatory clause revenue.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_DeferredRegulatoryClauseRevenue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_FacilityPowerCapacity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Facility Power Capacity</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_FacilityPowerCapacity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:powerItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_GeneratingCapacity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Generating Capacity</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_GeneratingCapacity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:powerItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_GracePeriodForIssuingOrReceivingRefunds">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Grace Period for Issuing or Receiving Refunds</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_GracePeriodForIssuingOrReceivingRefunds</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_IncreaseDecreaseInOperatingCosts">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Increase (Decrease) in Operating Costs</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_IncreaseDecreaseInOperatingCosts</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_NumberOfNewCustomers">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number Of New Customers</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_NumberOfNewCustomers</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:integerItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_PercentageOfWaiverApproved">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage of waiver approved.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_PercentageOfWaiverApproved</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_PercentageOfWaiverSought">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage Of Waiver Sought</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_PercentageOfWaiverSought</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_PermanentAdjustmentForRateIncrease">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Permanent adjustment for rate Increase.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_PermanentAdjustmentForRateIncrease</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_PotentialRegulatedOperatingRevenue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Potential Regulated Operating Revenue</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_PotentialRegulatedOperatingRevenue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_PowerCapacityFacilityForSmallCustomers">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Power capacity facility for small customers.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_PowerCapacityFacilityForSmallCustomers</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:powerItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_PowerGenerationCapacity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Power Generation Capacity</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_PowerGenerationCapacity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:energyItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_PublicUtilitiesApprovedRateIncreaseDecreaseEffectiveDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Public utilities approved rate increase decrease effective date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_PublicUtilitiesApprovedRateIncreaseDecreaseEffectiveDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_RegistrationPaymentArrangementExtensionTerm">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Describes the extended term of the registration payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_RegistrationPaymentArrangementExtensionTerm</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_RevenueAdjustment">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Revenue Adjustment</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_RevenueAdjustment</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssetAxis=utl_RevenueOffsetMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssetAxis=utl_RevenueOffsetMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementGeographicalAxis=stpr_ME">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementGeographicalAxis=stpr_ME</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryAssetAxis=utl_SecondTabProgramMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssetAxis=utl_SecondTabProgramMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementGeographicalAxis=stpr_NH">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementGeographicalAxis=stpr_NH</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilityAxis=us-gaap_GasDistributionMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilityAxis=us-gaap_GasDistributionMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_GraniteStateGasTransmissionIncMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_GraniteStateGasTransmissionIncMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilityAxis=utl_GasTransportationAndStorageMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilityAxis=utl_GasTransportationAndStorageMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<td><strong> Period Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_UnitilEnergySystemsIncMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_VariableRateAxis=utl_FirstRateStepAdjustmentsMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EnergyAxis=utl_OffshoreEnergyMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryAssetAxis=utl_SolarMassachusettsRenewableTargetProgramMember</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilityAxis=us-gaap_ElectricTransmissionMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilityAxis=us-gaap_ElectricTransmissionMember</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilityAxis=us-gaap_GasTransmissionMember</td>
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>60
<FILENAME>R46.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6773280608">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Environmental Matters - Additional Information (Detail) - Environmental Restoration Costs<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th"><div>Mar. 31, 2018</div></th></tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementGeographicalAxis=stpr_ME', window );">Maine</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SiteContingencyLineItems', window );"><strong>Site Contingency [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="text">5 years<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementGeographicalAxis=stpr_NH', window );">New Hampshire</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SiteContingencyLineItems', window );"><strong>Site Contingency [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_RemainingAmortizationPeriod', window );">Amortization period for environmental costs</a></td>
<td class="text">7 years<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SiteContingencyLineItems">
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SiteContingencyLineItems</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Period Type:</strong></td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Remaining Amortization Period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_RemainingAmortizationPeriod</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementGeographicalAxis=stpr_ME</td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilityAxis=us-gaap_EnvironmentalRestorationCostsMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementGeographicalAxis=stpr_NH</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td>na</td>
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</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>61
<FILENAME>R47.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6773643440">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Company's Liability for Environmental Obligations (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EnvironmentalExitCostLineItems', window );"><strong>Environmental Exit Cost [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingencies', window );">Total Balance at Beginning of Period</a></td>
<td class="nump">$ 2.1<span></span>
</td>
<td class="nump">$ 2.0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses', window );">Additions</a></td>
<td class="nump">0.2<span></span>
</td>
<td class="nump">0.4<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingenciesPayments1', window );">Less: Payments / Reductions</a></td>
<td class="nump">0.2<span></span>
</td>
<td class="nump">0.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingencies', window );">Total Balance at End of Period</a></td>
<td class="nump">2.1<span></span>
</td>
<td class="nump">2.3<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedEnvironmentalLossContingenciesCurrent', window );">Less: Current Portion</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 0.6<span></span>
</td>
<td class="nump">$ 0.5<span></span>
</td>
<td class="nump">$ 0.5<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent', window );">Noncurrent Balance</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1.5<span></span>
</td>
<td class="nump">1.6<span></span>
</td>
<td class="nump">1.8<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingencies', window );">Total Balance at End of period</a></td>
<td class="nump">2.1<span></span>
</td>
<td class="nump">2.3<span></span>
</td>
<td class="nump">2.1<span></span>
</td>
<td class="nump">2.1<span></span>
</td>
<td class="nump">2.3<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember', window );">Fitchburg Gas and Electric Light Company</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EnvironmentalExitCostLineItems', window );"><strong>Environmental Exit Cost [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingencies', window );">Total Balance at Beginning of Period</a></td>
<td class="nump">0.1<span></span>
</td>
<td class="nump">0.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses', window );">Additions</a></td>
<td class="nump">0.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingenciesPayments1', window );">Less: Payments / Reductions</a></td>
<td class="nump">0.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingencies', window );">Total Balance at End of Period</a></td>
<td class="nump">0.1<span></span>
</td>
<td class="nump">0.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedEnvironmentalLossContingenciesCurrent', window );">Less: Current Portion</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0.1<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingencies', window );">Total Balance at End of period</a></td>
<td class="nump">0.1<span></span>
</td>
<td class="nump">0.1<span></span>
</td>
<td class="nump">0.1<span></span>
</td>
<td class="nump">0.1<span></span>
</td>
<td class="nump">0.1<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember', window );">Northern Utilities Inc</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EnvironmentalExitCostLineItems', window );"><strong>Environmental Exit Cost [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingencies', window );">Total Balance at Beginning of Period</a></td>
<td class="nump">2.0<span></span>
</td>
<td class="nump">1.9<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses', window );">Additions</a></td>
<td class="nump">0.1<span></span>
</td>
<td class="nump">0.4<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingenciesPayments1', window );">Less: Payments / Reductions</a></td>
<td class="nump">0.1<span></span>
</td>
<td class="nump">0.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingencies', window );">Total Balance at End of Period</a></td>
<td class="nump">2.0<span></span>
</td>
<td class="nump">2.2<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedEnvironmentalLossContingenciesCurrent', window );">Less: Current Portion</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0.5<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0.4<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent', window );">Noncurrent Balance</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1.5<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1.8<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccrualForEnvironmentalLossContingencies', window );">Total Balance at End of period</a></td>
<td class="nump">$ 2.0<span></span>
</td>
<td class="nump">$ 2.2<span></span>
</td>
<td class="nump">$ 2.0<span></span>
</td>
<td class="nump">$ 2.0<span></span>
</td>
<td class="nump">$ 2.2<span></span>
</td>
</tr>
</table>
<div style="display: none;">
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total costs accrued as of the balance sheet date for environmental loss contingencies.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=82911808&amp;loc=d3e14326-108349<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -Section 50<br> -Paragraph 7<br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13207-110859<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section 25<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=6395460&amp;loc=d3e13647-108346<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccrualForEnvironmentalLossContingencies</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
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</div></td></tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of expense for newly incurred environmental loss contingencies. Includes, but is not limited to, remediation expense and interest accretion.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB TOPIC 5.Y.Q2)<br> -URI http://asc.fasb.org/extlink&amp;oid=27011672&amp;loc=d3e149879-122751<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
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<td>duration</td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash outflow to settle environmental loss contingencies.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB TOPIC 5.Y.Q2)<br> -URI http://asc.fasb.org/extlink&amp;oid=27011672&amp;loc=d3e149879-122751<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccrualForEnvironmentalLossContingenciesPayments1</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -Section 50<br> -Paragraph 7<br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13207-110859<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=82911808&amp;loc=d3e14326-108349<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=82887183&amp;loc=d3e6911-107765<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -Section 50<br> -Paragraph 10<br> -Subparagraph (d)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13237-110859<br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccruedEnvironmentalLossContingenciesCurrent</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable after twelve months or beyond the next operating cycle if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.24)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -Section 50<br> -Paragraph 10<br> -Subparagraph (d)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13237-110859<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 30<br> -Section 50<br> -Paragraph 7<br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13207-110859<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=82911808&amp;loc=d3e14326-108349<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr>
<td><strong> Data Type:</strong></td>
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<tr>
<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EnvironmentalExitCostLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EnvironmentalExitCostLineItems</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_FitchburgGasAndElectricLightCompanyMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<td><strong> Balance Type:</strong></td>
<td></td>
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<td><strong> Period Type:</strong></td>
<td></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LegalEntityAxis=utl_NorthernUtilitiesIncMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
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<DOCUMENT>
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<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6774361584">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Income Taxes - Additional Information (Detail) - USD ($)<br> $ in Millions</strong></div></th>
<th class="th" colspan="1">1 Months Ended</th>
<th class="th" colspan="1">3 Months Ended</th>
<th class="th" colspan="2">12 Months Ended</th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
<th class="th"><div>Dec. 31, 2016</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_IncomeTaxesLineItems', window );"><strong>Income Taxes [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate', window );">Corporate federal income tax</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">21.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilities', window );">Regulatory Liability</a></td>
<td class="nump">$ 58.1<span></span>
</td>
<td class="nump">$ 60.0<span></span>
</td>
<td class="nump">$ 58.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 13.5<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_RegulatoryLiabilityRecoveryRefund', window );">Regulatory liability, expected flow back to customers</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 47.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilityRecoveryRefund', window );">Regulatory liability, expected pass back to ratepayers</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1.8<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeTaxReconciliationTaxCredits', window );">Tax benefit for New Hampshire business enterprise tax credits</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 0.7<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic', window );">Deferred tax assets, operating loss carryforwards, federal</a></td>
<td class="nump">1.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards', window );">Net Operating Loss Carryforwards</a></td>
<td class="nump">12.7<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 12.7<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_NetOperatingLossCarryforwardsExpirationYear', window );">NOL carryforward assets expiration date</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">2029<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax', window );">Alternative minimum tax credit carryforwards</a></td>
<td class="nump">3.5<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 3.5<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RangeAxis=us-gaap_MinimumMember', window );">Minimum</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_IncomeTaxesLineItems', window );"><strong>Income Taxes [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_EstimatedFlowBackPeriod', window );">Average Rate Assumption Method estimated flow back period</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">15 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RangeAxis=us-gaap_MaximumMember', window );">Maximum</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_IncomeTaxesLineItems', window );"><strong>Income Taxes [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_EstimatedFlowBackPeriod', window );">Average Rate Assumption Method estimated flow back period</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">20 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilityAxis=utl_IncomeTaxRelatedLiabilitiesMember', window );">Income Tax Related Liabilities</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_IncomeTaxesLineItems', window );"><strong>Income Taxes [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RegulatoryLiabilities', window );">Regulatory Liability</a></td>
<td class="nump">$ 48.9<span></span>
</td>
<td class="nump">$ 49.1<span></span>
</td>
<td class="nump">48.9<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TaxPeriodAxis=utl_TaxYear2018Member', window );">Tax Year 2018</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_IncomeTaxesLineItems', window );"><strong>Income Taxes [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate', window );">Corporate federal income tax</a></td>
<td class="nump">21.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic', window );">Deferred tax assets, operating loss carryforwards, federal</a></td>
<td class="nump">$ 10.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 10.1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeTaxAuthorityAxis=utl_DomesticCountryAndStateAndLocalJurisdictionMember', window );">Federal, Maine, Massachusetts, and New Hampshire Tax Authorities</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_IncomeTaxesLineItems', window );"><strong>Income Taxes [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeTaxExaminationDescription', window );">Tax examination description</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">The Company remains subject to examination by Federal, Maine, Massachusetts, and New Hampshire tax authorities for the tax periods ended December 31, 2014; December 31, 2015; and December 31, 2016<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
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<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 25<br> -Paragraph 20<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=96869850&amp;loc=d3e28680-109314<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32621-109319<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32632-109319<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxAssetsOperatingLossCarryforwards</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32621-109319<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 25<br> -Paragraph 20<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=96869850&amp;loc=d3e28680-109314<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32632-109319<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32559-109319<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32632-109319<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32621-109319<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Percentage of domestic federal statutory tax rate applicable to pretax income (loss).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 12<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32687-109319<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB TOPIC 6.I)<br> -URI http://asc.fasb.org/extlink&amp;oid=34349781&amp;loc=d3e330036-122817<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 13<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32698-109319<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxExaminationDescription">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A brief description of status of the tax examination, significant findings to date, and the entity's position with respect to the findings.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 15<br> -Subparagraph (d)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32718-109319<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxExaminationDescription</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxReconciliationTaxCredits">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 12<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32687-109319<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 13<br> -URI http://asc.fasb.org/extlink&amp;oid=84230637&amp;loc=d3e32698-109319<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxReconciliationTaxCredits</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 980<br> -SubTopic 405<br> -Section 25<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6500807&amp;loc=d3e48068-110394<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_EstimatedFlowBackPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Estimated flow back period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_EstimatedFlowBackPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_IncomeTaxesLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Income Taxes [Line Items]</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_IncomeTaxesLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_NetOperatingLossCarryforwardsExpirationYear">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Net Operating Loss Carryforwards, Expiration Year</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_NetOperatingLossCarryforwardsExpirationYear</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:gYearItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_RegulatoryLiabilityRecoveryRefund">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Regulatory liability recovery refund.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_RegulatoryLiabilityRecoveryRefund</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilityRecoveryRefund">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tax Cuts and Jobs Act of 2017 Change in Tax Rate Regulatory Liability Recovery Refund</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilityRecoveryRefund</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>utl_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RangeAxis=us-gaap_MinimumMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RangeAxis=us-gaap_MinimumMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RangeAxis=us-gaap_MaximumMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RangeAxis=us-gaap_MaximumMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RegulatoryLiabilityAxis=utl_IncomeTaxRelatedLiabilitiesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RegulatoryLiabilityAxis=utl_IncomeTaxRelatedLiabilitiesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TaxPeriodAxis=utl_TaxYear2018Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TaxPeriodAxis=utl_TaxYear2018Member</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxAuthorityAxis=utl_DomesticCountryAndStateAndLocalJurisdictionMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxAuthorityAxis=utl_DomesticCountryAndStateAndLocalJurisdictionMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
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</table></div>
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</div>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>63
<FILENAME>R49.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
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</head>
<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6785930064">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Key Weighted Average Assumptions Used in Determining Benefit Plan Costs and Obligations (Detail) - Benefit Plan Costs<br></strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanDisclosureLineItems', window );"><strong>Defined Benefit Plan Disclosure [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate', window );">Discount Rate</a></td>
<td class="nump">3.60%<span></span>
</td>
<td class="nump">4.10%<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease', window );">Rate of Compensation Increase</a></td>
<td class="nump">3.00%<span></span>
</td>
<td class="nump">3.00%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets', window );">Expected Long-term rate of return on plan assets</a></td>
<td class="nump">7.75%<span></span>
</td>
<td class="nump">7.75%<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear', window );">Health Care Cost Trend Rate Assumed for Next Year</a></td>
<td class="nump">7.50%<span></span>
</td>
<td class="nump">8.00%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1', window );">Ultimate Health Care Cost Trend Rate</a></td>
<td class="nump">4.50%<span></span>
</td>
<td class="nump">4.00%<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate', window );">Year that Ultimate Health Care Cost Trend Rate is reached</a></td>
<td class="text">2024<span></span>
</td>
<td class="text">2025<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (k)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (k)(3)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (k)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanDisclosureLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanDisclosureLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (l)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Ultimate trend rate for health care cost for defined benefit postretirement plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (l)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Year ultimate health care cost trend rate is expected to be reached, in CCYY format.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (l)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:gYearItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RetirementPlanTypeAxis=utl_BenefitPlanCostsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RetirementPlanTypeAxis=utl_BenefitPlanCostsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>64
<FILENAME>R50.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6773479600">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Components of Retirement Plan Costs (Detail) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Mar. 31, 2018</div></th>
<th class="th"><div>Mar. 31, 2017</div></th>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember', window );">Pension Plans</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanDisclosureLineItems', window );"><strong>Defined Benefit Plan Disclosure [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanServiceCost', window );">Service Cost</a></td>
<td class="nump">$ 848<span></span>
</td>
<td class="nump">$ 824<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanInterestCost', window );">Interest Cost</a></td>
<td class="nump">1,469<span></span>
</td>
<td class="nump">1,514<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets', window );">Expected Return on Plan Assets</a></td>
<td class="num">(1,946)<span></span>
</td>
<td class="num">(1,819)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit', window );">Prior Service Cost Amortization</a></td>
<td class="nump">81<span></span>
</td>
<td class="nump">66<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses', window );">Actuarial Loss Amortization</a></td>
<td class="nump">1,447<span></span>
</td>
<td class="nump">1,176<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_DefinedBenefitPlanGrossPeriodicBenefitCost', window );">Sub-total</a></td>
<td class="nump">1,899<span></span>
</td>
<td class="nump">1,761<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_DefinedBenefitPlanCapitalizedAndDeferred', window );">Amounts Capitalized and Deferred</a></td>
<td class="num">(720)<span></span>
</td>
<td class="num">(662)<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost', window );">Net Periodic Benefit Cost Recognized</a></td>
<td class="nump">1,179<span></span>
</td>
<td class="nump">1,099<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember', window );">Other Postretirement Benefit Plans, Defined Benefit</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanDisclosureLineItems', window );"><strong>Defined Benefit Plan Disclosure [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanServiceCost', window );">Service Cost</a></td>
<td class="nump">733<span></span>
</td>
<td class="nump">744<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanInterestCost', window );">Interest Cost</a></td>
<td class="nump">851<span></span>
</td>
<td class="nump">978<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets', window );">Expected Return on Plan Assets</a></td>
<td class="num">(409)<span></span>
</td>
<td class="num">(337)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit', window );">Prior Service Cost Amortization</a></td>
<td class="nump">327<span></span>
</td>
<td class="nump">350<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses', window );">Actuarial Loss Amortization</a></td>
<td class="nump">346<span></span>
</td>
<td class="nump">524<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_DefinedBenefitPlanGrossPeriodicBenefitCost', window );">Sub-total</a></td>
<td class="nump">1,848<span></span>
</td>
<td class="nump">2,259<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_DefinedBenefitPlanCapitalizedAndDeferred', window );">Amounts Capitalized and Deferred</a></td>
<td class="num">(742)<span></span>
</td>
<td class="num">(1,037)<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost', window );">Net Periodic Benefit Cost Recognized</a></td>
<td class="nump">1,106<span></span>
</td>
<td class="nump">1,222<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RetirementPlanTypeAxis=us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember', window );">Supplemental Employee Retirement Plans, Defined Benefit</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanDisclosureLineItems', window );"><strong>Defined Benefit Plan Disclosure [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanServiceCost', window );">Service Cost</a></td>
<td class="nump">122<span></span>
</td>
<td class="nump">115<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanInterestCost', window );">Interest Cost</a></td>
<td class="nump">101<span></span>
</td>
<td class="nump">98<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit', window );">Prior Service Cost Amortization</a></td>
<td class="nump">47<span></span>
</td>
<td class="nump">47<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses', window );">Actuarial Loss Amortization</a></td>
<td class="nump">122<span></span>
</td>
<td class="nump">74<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_DefinedBenefitPlanGrossPeriodicBenefitCost', window );">Sub-total</a></td>
<td class="nump">392<span></span>
</td>
<td class="nump">334<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_utl_DefinedBenefitPlanCapitalizedAndDeferred', window );">Amounts Capitalized and Deferred</a></td>
<td class="num">(113)<span></span>
</td>
<td class="num">(99)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost', window );">Net Periodic Benefit Cost Recognized</a></td>
<td class="nump">$ 279<span></span>
</td>
<td class="nump">$ 235<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (h)(4)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (h)(5)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanDisclosureLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanDisclosureLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (h)(3)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanInterestCost">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cost recognized for passage of time related to defined benefit plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (h)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)(2)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanInterestCost</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of net periodic benefit cost (credit) for defined benefit plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (h)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanServiceCost">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (h)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanServiceCost</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_utl_DefinedBenefitPlanCapitalizedAndDeferred">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amounts of pension and other post retirement benefit costs capitalized and deferred.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">utl_DefinedBenefitPlanCapitalizedAndDeferred</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The gross amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<td><strong> Name:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RetirementPlanTypeAxis=us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember</td>
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<DOCUMENT>
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<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.8.0.1</span><table class="report" border="0" cellspacing="2" id="idp6773348400">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Retirement Benefit Obligations - Additional Information (Detail)<br></strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th">
<div>Mar. 31, 2018 </div>
<div>USD ($)</div>
</th></tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember', window );">Pension Plans</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanDisclosureLineItems', window );"><strong>Defined Benefit Plan Disclosure [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanContributionsByEmployer', window );">Contributions to benefit plan</a></td>
<td class="nump">$ 1,200,000<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember', window );">Other Postretirement Benefit Plans, Defined Benefit</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanDisclosureLineItems', window );"><strong>Defined Benefit Plan Disclosure [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanContributionsByEmployer', window );">Contributions to benefit plan</a></td>
<td class="nump">1,000,000<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RetirementPlanTypeAxis=us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember', window );">Supplemental Employee Retirement Plans, Defined Benefit</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanDisclosureLineItems', window );"><strong>Defined Benefit Plan Disclosure [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid', window );">Benefit payments under SERP Plan</a></td>
<td class="nump">356,300<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsRemainderOfFiscalYear', window );">Expected additional benefit payments under SERP Plan in 2016</a></td>
<td class="nump">$ 43,900<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 60<br> -Section 50<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=6414203&amp;loc=d3e39716-114964<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)(6)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of contribution received by defined benefit plan from employer which increases plan assets.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (d)(5)(ii)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 6<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e2709-114920<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (b)(3)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (d)(5)(iv)(01)<br> -URI http://asc.fasb.org/extlink&amp;oid=82843861&amp;loc=d3e1928-114920<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of benefits for defined benefit plan expected to be paid in remainder of fiscal year.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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end
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
