<SEC-DOCUMENT>0001161728-19-000031.txt : 20190807
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ACCESSION NUMBER:		0001161728-19-000031
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		14
CONFORMED PERIOD OF REPORT:	20190807
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20190807
DATE AS OF CHANGE:		20190807

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MGE ENERGY INC
		CENTRAL INDEX KEY:			0001161728
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC, GAS & SANITARY SERVICES [4900]
		IRS NUMBER:				392040501
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-49965
		FILM NUMBER:		191004738

	BUSINESS ADDRESS:	
		STREET 1:		133 SOUTH BLAIR STREET
		STREET 2:		P.O. BOX 1231
		CITY:			MADISON
		STATE:			WI
		ZIP:			53701-1231
		BUSINESS PHONE:		(608) 252-7000

	MAIL ADDRESS:	
		STREET 1:		133 SOUTH BLAIR STREET
		STREET 2:		P.O. BOX 1231
		CITY:			MADISON
		STATE:			WI
		ZIP:			53701-1231

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MADISON GAS & ELECTRIC CO
		CENTRAL INDEX KEY:			0000061339
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		IRS NUMBER:				390444025
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1025

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-01125
		FILM NUMBER:		191004737

	BUSINESS ADDRESS:	
		STREET 1:		133 SOUTH BLAIR STREET
		STREET 2:		P.O. BOX 1231
		CITY:			MADISON
		STATE:			WI
		ZIP:			53701-1231
		BUSINESS PHONE:		(608) 252-7000

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 1231
		CITY:			MADISON
		STATE:			WI
		ZIP:			53701-1231
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padding-left: 5.75pt; padding-right: 5.75pt; padding-top: 0; padding-bottom: 0"><p style="margin-bottom: 0"><span style="font-family: Calibri; font-size: 11.00pt">&#160;</span></p></td><td style="width: 55%; padding-left: 5.75pt; padding-right: 5.75pt; padding-top: 0; padding-bottom: 0"><p style="margin-bottom: 0"><span style="font-family: Calibri; font-size: 11.00pt">&#160;</span></p></td></tr><tr style="height: 0.01in"><td style="width: 45%; padding-left: 5.75pt; padding-right: 5.75pt; padding-top: 0; padding-bottom: 0"><p style="margin-bottom: 0"><span style="font-family: Calibri; font-size: 11.00pt">&#160;</span></p></td><td style="width: 55%; padding-left: 5.75pt; padding-right: 5.75pt; padding-top: 0; padding-bottom: 0"><p style="margin-bottom: 0"><span style="font-family: Calibri; font-size: 11.00pt">&#160;</span></p></td></tr><tr style="height: 0.01in"><td style="width: 45%; padding-left: 5.75pt; padding-right: 5.75pt; padding-top: 0; padding-bottom: 0; text-align: left"><p style="margin-top: 0; margin-bottom: 0; text-align: left"><span style="font-family: Calibri; font-size: 11.00pt">Date: August 7, 2019</span></p></td><td style="width: 55%; border-bottom: solid windowText 0.5pt; padding-left: 5.75pt; padding-right: 5.75pt; padding-top: 0; padding-bottom: 0; text-align: left"><p style="margin-top: 0; margin-bottom: 0; text-align: left"><span style="font-family: Calibri; font-size: 11.00pt">/s/ Jeffrey C. Newman</span></p></td></tr><tr style="height: 0.01in"><td style="width: 45%; padding-left: 5.75pt; padding-right: 5.75pt; padding-top: 0; padding-bottom: 0"><p style="margin-bottom: 0"><span style="font-family: Calibri; font-size: 11.00pt">&#160;</span></p></td><td style="width: 55%; border-top: solid windowText 0.5pt; padding-left: 5.75pt; padding-right: 5.75pt; padding-top: 0; padding-bottom: 0; text-align: left"><p style="margin-top: 0; margin-bottom: 0; text-align: left"><span style="font-family: Calibri; font-size: 11.00pt">Jeffrey C. Newman</span></p><p style="margin-top: 0; margin-bottom: 0; text-align: left"><span style="font-family: Calibri; font-size: 11.00pt">Executive Vice President, Chief Financial Officer,</span></p><p style="margin-top: 0; margin-bottom: 0; text-align: left"><span style="font-family: Calibri; font-size: 11.00pt">Secretary and Treasurer</span></p></td></tr></table><p style="margin-top: 0; line-height: 107.92%; margin-bottom: 8.00pt; text-align: left"><span style="font-family: Calibri; font-size: 11.00pt">&#160;</span></p></div><div><p style="margin-top: 0; margin-bottom: 0; text-align: center"><span style="font-family: Calibri; font-size: 10.00pt">3<br /></span></p></div></body></html>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>2
<FILENAME>ex991.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>

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<meta content="text/html; charset=utf-8" />

<title>Exhibit 99.1</title>


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<p style="border:none;margin:0in;margin-bottom:.0001pt;mso-border-shadow:yes;mso-line-height-rule:exactly;mso-padding-alt:31.0pt 31.0pt 31.0pt 31.0pt;mso-pagination:widow-orphan no-line-numbers;"><font style="border:none;"><font face="Times New Roman,serif" lang=EN-US style="font-size:12.0pt;line-height:.7pt;">&nbsp;</font></font></p>


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<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font style="border:none;"><font face="Times New Roman,serif" lang=EN-US style="font-size:12.0pt;">&nbsp;</font></font></p>

<p align=center style="border:none;margin:0in;margin-bottom:.0001pt;text-align:center;"><font face=Calibri,sans-serif style="border:none;"><b><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">EXHIBIT
99.1</font></b></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><b><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">News</font></b></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">&nbsp;</font></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><b><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">MGE Energy Reports Second-Quarter
Earnings</font></b></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">&nbsp;</font></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">Madison, Wis., Aug. 7, 2019&#8212;MGE Energy,
Inc. (Nasdaq: MGEE) today reported financial results for the second quarter of
2019.</font></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">&nbsp;</font></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">MGE Energy&#8217;s earnings for the second
quarter of 2019 were $15.5&nbsp;million, or 45 cents per share, compared to $18.3&nbsp;million,
or 53 cents per share, for the same period in the prior year.&#160; </font></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">&nbsp;</font></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">During the second quarter of
2019, electric net income decreased due to lower residential customer usage
resulting from cooler weather in June compared to the same period in the prior
year.&#160; Gas net income decreased during the quarter primarily related to lower
gas retail sales attributable to warmer weather in April 2019 compared to the
same period in the prior year.</font></font></p>

<p style="margin:0in;margin-bottom:.0001pt;"><font face="Times New Roman,serif" lang=EN-US style="font-size:12.0pt;">&nbsp;</font></p>

<div align=left><table border=0 cellpadding=0 cellspacing=0 style="border-collapse:collapse;width:100%;">
 <tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td colspan=4 nowrap valign=bottom width=92% style="height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p align=center style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:center;"><b><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">MGE Energy,
  Inc.</font></b></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td colspan=4 nowrap valign=bottom width=92% style="height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p align=center style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:center;"><i><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">(In
  thousands, except per share amounts)</font></i></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td colspan=4 nowrap valign=bottom width=92% style="height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p align=center style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:center;"><i><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">(Unaudited)</font></i></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><b><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">Three Months Ended June 30,</font></b></p>
  </td>
 <td nowrap valign=bottom width=15% style="border:none;border-bottom:solid black 1.0pt;height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p align=center style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:center;"><b><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">2019</font></b></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p align=center style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:center;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="border:none;border-bottom:solid black 1.0pt;height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p align=center style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:center;"><b><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">2018</font></b></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="background:#CCEEFF;height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">Operating revenue </font></p>
  </td>
 <td nowrap valign=bottom width=15% style="background:#CCEEFF;border:none;height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$122,147</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="background:#CCEEFF;height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="background:#CCEEFF;border:none;height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$124,262</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">Operating income </font></p>
  </td>
 <td nowrap valign=bottom width=15% style="height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$19,783</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$24,231</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="background:#CCEEFF;height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">Net income </font></p>
  </td>
 <td nowrap valign=bottom width=15% style="background:#CCEEFF;height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$15,548</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="background:#CCEEFF;height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="background:#CCEEFF;height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$18,351</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">Earnings per share (basic and diluted) </font></p>
  </td>
 <td nowrap valign=bottom width=15% style="height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$0.45</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$0.53</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="background:#CCEEFF;height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">Weighted average shares outstanding (basic
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  </td>
 <td nowrap valign=bottom width=15% style="background:#CCEEFF;height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">34,668</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="background:#CCEEFF;height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="background:#CCEEFF;height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">34,668</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:5.25pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:5.25pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="height:5.25pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="height:5.25pt;padding:0in 0in 0in 0in;">
  <p align=center style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:center;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:5.25pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="height:5.25pt;padding:0in 0in 0in 0in;">
  <p align=center style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:center;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:5.25pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><b><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">Six Months Ended June 30,</font></b></p>
  </td>
 <td nowrap valign=bottom width=15% style="border:none;border-bottom:solid black 1.0pt;height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p align=center style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:center;"><b><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">2019</font></b></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p align=center style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:center;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="border:none;border-bottom:solid black 1.0pt;height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p align=center style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:center;"><b><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">2018</font></b></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="background:#CCEEFF;height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">Operating revenue </font></p>
  </td>
 <td nowrap valign=bottom width=15% style="background:#CCEEFF;border:none;height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$289,716</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="background:#CCEEFF;height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="background:#CCEEFF;border:none;height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$281,894</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">Operating income </font></p>
  </td>
 <td nowrap valign=bottom width=15% style="height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$50,293</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$50,419</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="background:#CCEEFF;height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">Net income </font></p>
  </td>
 <td nowrap valign=bottom width=15% style="background:#CCEEFF;height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$39,554</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="background:#CCEEFF;height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="background:#CCEEFF;height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$38,352</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">Earnings per share (basic and diluted) </font></p>
  </td>
 <td nowrap valign=bottom width=15% style="height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$1.14</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">$1.11</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 </tr>
<tr style="height:12.75pt;page-break-inside:avoid;">
  <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=58% style="background:#CCEEFF;height:12.75pt;padding:0in 2.0pt 0in 2.0pt;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">Weighted average shares outstanding (basic
  and diluted) </font></p>
  </td>
 <td nowrap valign=bottom width=15% style="background:#CCEEFF;height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">34,668</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="background:#CCEEFF;height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
  </td>
 <td nowrap valign=bottom width=15% style="background:#CCEEFF;height:12.75pt;padding:0in 5.75pt 0in 2.0pt;">
  <p align=right style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;text-align:right;"><font color=black face=Calibri,sans-serif style="font-size:12.0pt;">34,668</font></p>
  </td>
 <td nowrap valign=bottom width=4% style="height:12.75pt;padding:0in 0in 0in 0in;">
  <p style="margin:0in;margin-bottom:.0001pt;page-break-after:avoid;"><font face=Calibri,sans-serif style="font-size:12.0pt;">&nbsp;</font></p>
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 </tr>
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<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font style="border:none;"><font face="Times New Roman,serif" lang=EN-US style="font-size:12.0pt;">&nbsp;</font></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><b><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">About MGE Energy</font></b></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">MGE Energy is a public utility
holding company. Its principal subsidiary, Madison Gas and Electric, generates
and distributes electricity to 153,000 customers in Dane County, Wis., and
purchases and distributes natural gas to 161,000 customers in seven
south-central and western Wisconsin counties. MGE's roots in the Madison area
date back more than 150 years.</font></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><b><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">&nbsp;</font></b></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><b><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">Contact</font></b></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">Steven B. Schultz</font></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">Corporate Communications Manager</font></font></p>

<p style="border:none;margin:0in;margin-bottom:.0001pt;"><font face=Calibri,sans-serif style="border:none;"><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">608-252-7219 | </font></font><font face=Calibri,sans-serif style="border:none;"><font face=Calibri,sans-serif lang=EN-US style="font-size:11.0pt;">sbschultz@mge.com</font></font></p>




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    <dei:EntityTaxIdentificationNumber
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728_dei_LegalEntityAxis_mgee_MgeMember"
      id="ID_19">390444025</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressStateOrProvince
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728"
      id="ID_26">WI</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressStateOrProvince
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728_dei_LegalEntityAxis_mgee_MgeMember"
      id="ID_27">WI</dei:EntityAddressStateOrProvince>
    <dei:DocumentPeriodEndDate
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728"
      id="ID_33">2019-08-07</dei:DocumentPeriodEndDate>
    <dei:DocumentType
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728"
      id="ID_32">8-K</dei:DocumentType>
    <dei:EntityFileNumber
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728"
      id="ID_20">000-49965</dei:EntityFileNumber>
    <mgee:Entityincorporationstatecountrycode
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728"
      id="ID_22">Wisconsin</mgee:Entityincorporationstatecountrycode>
    <dei:EntityAddressAddressLine1
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728"
      id="ID_0">133 South Blair Street</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728"
      id="ID_24">Madison</dei:EntityAddressCityOrTown>
    <dei:EntityAddressPostalZipCode
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728"
      id="ID_28">53788</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728"
      id="ID_2">608</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728"
      id="ID_30">252-7000</dei:LocalPhoneNumber>
    <dei:EntityFileNumber
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728_dei_LegalEntityAxis_mgee_MgeMember"
      id="ID_21">000-1125</dei:EntityFileNumber>
    <dei:EntityRegistrantName
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728_dei_LegalEntityAxis_mgee_MgeMember"
      id="ID_7">Madison Gas and Electric Company</dei:EntityRegistrantName>
    <mgee:Entityincorporationstatecountrycode
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728_dei_LegalEntityAxis_mgee_MgeMember"
      id="ID_23">Wisconsin</mgee:Entityincorporationstatecountrycode>
    <dei:EntityAddressAddressLine1
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728_dei_LegalEntityAxis_mgee_MgeMember"
      id="ID_1">133 South Blair Street</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728_dei_LegalEntityAxis_mgee_MgeMember"
      id="ID_25">Madison</dei:EntityAddressCityOrTown>
    <dei:EntityAddressPostalZipCode
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728_dei_LegalEntityAxis_mgee_MgeMember"
      id="ID_29">53788</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728_dei_LegalEntityAxis_mgee_MgeMember"
      id="ID_3">608</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728_dei_LegalEntityAxis_mgee_MgeMember"
      id="ID_31">252-7000</dei:LocalPhoneNumber>
    <mgee:Security12btitle
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728"
      id="ID_16">Common Stock, $1 Par Value Per Share</mgee:Security12btitle>
    <dei:TradingSymbol
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728"
      id="ID_4">MGEE</dei:TradingSymbol>
    <mgee:Securityexchangename
      contextRef="FROM_Aug07_2019_TO_Aug07_2019_Entity_0001161728"
      id="ID_17">The Nasdaq Stock Market</mgee:Securityexchangename>
</xbrl>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>8
<FILENAME>R1.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) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
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</head>
<body>
<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6606960800">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Document and Entity Information<br></strong></div></th>
<th class="th"><div>Aug. 07, 2019</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_mgee_DocumentAndEntityInformationLineItems', window );"><strong>Document And Entity Information [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_dei_EntityRegistrantName', window );">Entity Registrant Name</a></td>
<td class="text">MGE Energy Inc<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityCentralIndexKey', window );">Entity Central Index Key</a></td>
<td class="text">0001161728<span></span>
</td>
</tr>
<tr class="ro">
<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">8-K<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentPeriodEndDate', window );">Document Period End Date</a></td>
<td class="text">Aug.  07,  2019<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_AmendmentFlag', window );">Amendment Flag</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_TradingSymbol', window );">Trading Symbol</a></td>
<td class="text">MGEE<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityEmergingGrowthCompany', window );">Entity Emerging Growth Company</a></td>
<td class="text">false<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_mgee_Securityexchangename', window );">Security Exchange Name</a></td>
<td class="text">The Nasdaq Stock Market<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_mgee_Security12btitle', window );">Security 12b Title</a></td>
<td class="text">Common Stock, $1 Par Value Per Share<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityTaxIdentificationNumber', window );">Entity Tax Identification Number</a></td>
<td class="text">392040501<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityFileNumber', window );">Entity File Number</a></td>
<td class="text">000-49965<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressAddressLine1', window );">Entity Address Address Line1</a></td>
<td class="text">133 South Blair Street<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressCityOrTown', window );">Entity Address City Or Town</a></td>
<td class="text">Madison<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressStateOrProvince', window );">Entity Address State Or Province</a></td>
<td class="text">WI<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressPostalZipCode', window );">Entity Address Postal Zip Code</a></td>
<td class="text">53788<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_CityAreaCode', window );">City Area Code</a></td>
<td class="text">608<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LocalPhoneNumber', window );">Local Phone Number</a></td>
<td class="text">252-7000<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_mgee_WrittenCommunications', window );">Written Communications</a></td>
<td class="text">false<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_mgee_SolicitingMaterial', window );">Soliciting Material</a></td>
<td class="text">false<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_mgee_PreCommencementIssuerTenderOffer', window );">Pre-commencement Issuer Tender Offer</a></td>
<td class="text">false<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_mgee_PreCommencementTenderOffer', window );">Pre-commencement Tender Offer</a></td>
<td class="text">false<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_mgee_Entityincorporationstatecountrycode', window );">Entity Incorporation State Country Code</a></td>
<td class="text">Wisconsin<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=mgee_MgeMember', window );">MGE [Member]</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_mgee_DocumentAndEntityInformationLineItems', window );"><strong>Document And Entity Information [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_dei_EntityRegistrantName', window );">Entity Registrant Name</a></td>
<td class="text">Madison Gas and Electric Company<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityCentralIndexKey', window );">Entity Central Index Key</a></td>
<td class="text">0000061339<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityEmergingGrowthCompany', window );">Entity Emerging Growth Company</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityTaxIdentificationNumber', window );">Entity Tax Identification Number</a></td>
<td class="text">390444025<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityFileNumber', window );">Entity File Number</a></td>
<td class="text">000-1125<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressAddressLine1', window );">Entity Address Address Line1</a></td>
<td class="text">133 South Blair Street<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressCityOrTown', window );">Entity Address City Or Town</a></td>
<td class="text">Madison<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressStateOrProvince', window );">Entity Address State Or Province</a></td>
<td class="text">WI<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressPostalZipCode', window );">Entity Address Postal Zip Code</a></td>
<td class="text">53788<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_CityAreaCode', window );">City Area Code</a></td>
<td class="text">608<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LocalPhoneNumber', window );">Local Phone Number</a></td>
<td class="text">252-7000<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_mgee_Entityincorporationstatecountrycode', window );">Entity Incorporation State Country Code</a></td>
<td class="text">Wisconsin<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_AmendmentFlag">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<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">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_AmendmentFlag</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:booleanItemType</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_CityAreaCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Area code of city</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_CityAreaCode</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_DocumentPeriodEndDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></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 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">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentPeriodEndDate</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: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_dei_DocumentType">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></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 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">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentType</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:submissionTypeItemType</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_EntityAddressAddressLine1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Address Line 1 such as Building Name, Street Name</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_EntityAddressAddressLine1</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_EntityAddressCityOrTown">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the City or Town</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_EntityAddressCityOrTown</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_EntityAddressPostalZipCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Code for the postal or zip code</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_EntityAddressPostalZipCode</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_EntityAddressStateOrProvince">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the state or province.</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_EntityAddressStateOrProvince</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_EntityCentralIndexKey">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></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 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 12<br> -Subsection b-2<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_EntityCentralIndexKey</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:centralIndexKeyItemType</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_EntityEmergingGrowthCompany">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></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 if registrant meets the emerging growth company criteria.</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 12<br> -Subsection b-2<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_EntityEmergingGrowthCompany</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:booleanItemType</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_EntityFileNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.</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_EntityFileNumber</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:fileNumberItemType</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 12<br> -Subsection b-2<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_EntityTaxIdentificationNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></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 Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.</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 12<br> -Subsection b-2<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_EntityTaxIdentificationNumber</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:nineDigitItemType</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_LocalPhoneNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Local phone number for entity.</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_LocalPhoneNumber</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>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_mgee_DocumentAndEntityInformationLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.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;">mgee_DocumentAndEntityInformationLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>mgee_</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_mgee_Entityincorporationstatecountrycode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Two-character EDGAR code representing the state or country of incorporation.</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;">mgee_Entityincorporationstatecountrycode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>mgee_</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_mgee_PreCommencementIssuerTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.</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;">mgee_PreCommencementIssuerTenderOffer</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>mgee_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</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_mgee_PreCommencementTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.</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;">mgee_PreCommencementTenderOffer</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>mgee_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</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_mgee_Security12btitle">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Title of a 12(b) registered security.</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;">mgee_Security12btitle</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>mgee_</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_mgee_Securityexchangename">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the Exchange on which a security is registered.</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;">mgee_Securityexchangename</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>mgee_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
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end
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
