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Debt and Financing Arrangements (Tables)

3 Months Ended

Mar. 31, 2015

Details on Long Term Debt

Details on long-term debt at March 31, 2015, March 31, 2014 and December 31, 2014 are shown below:

($ millions)		March 31,								December 31,
		2015				2014				2014
Unitil Corporation Senior Notes:
6.33% Notes, Due May 1, 2022		$	20.0			$	20.0			$	20.0
Unitil Energy Systems, Inc.:
First Mortgage Bonds:
5.24% Series, Due March 2, 2020			15.0				15.0				15.0
8.49% Series, Due October 14, 2024			15.0				15.0				15.0
6.96% Series, Due September 1, 2028			20.0				20.0				20.0
8.00% Series, Due May 1, 2031			15.0				15.0				15.0
6.32% Series, Due September 15, 2036			15.0				15.0				15.0
Fitchburg Gas and Electric Light Company:
Long-Term Notes:
6.75% Notes, Due November 30, 2023			15.2				19.0				15.2
7.37% Notes, Due January 15, 2029			12.0				12.0				12.0
7.98% Notes, Due June 1, 2031			14.0				14.0				14.0
6.79% Notes, Due October 15, 2025			10.0				10.0				10.0
5.90% Notes, Due December 15, 2030			15.0				15.0				15.0
Northern Utilities Senior Notes:
6.95% Senior Notes, Series A, Due December 3, 2018			30.0				30.0				30.0
5.29% Senior Notes, Due March 2, 2020			25.0				25.0				25.0
7.72% Senior Notes, Series B, Due December 3, 2038			50.0				50.0				50.0
4.42% Senior Notes, Due October 15, 2044			50.0				—				50.0
Granite State Senior Notes:
7.15% Senior Notes, Due December 15, 2018			10.0				10.0				10.0
Unitil Realty Corp.:
Senior Secured Notes:
8.00% Notes, Due Through August 1, 2017			1.5				2.2				1.7
Total Long-Term Debt			332.7				287.2				332.9
Less: Current Portion			4.0				2.5				4.0
Total Long-term Debt, Less Current Portion		$	328.7			$	284.7			$	328.9

Fair Value of Long Term Debt

($ millions)		March 31,								December 31,
		2015				2014				2014
Estimated Fair Value of Long-Term Debt		$	385.3			$	332.8			$	380.6

Borrowing Limits Amounts Outstanding and Amounts Available under Revolving Credit Facility

The following table details the borrowing limits, amounts outstanding and amounts available under the revolving Credit Facility as of March 31, 2015, March 31, 2014 and December 31, 2014:

		Revolving Credit Facility ($ millions)
		March 31,								December 31,
		2015				2014				2014
Limit		$	120.0			$	120.0			$	120.0
Outstanding		$	32.0			$	59.2			$	29.3
Available		$	88.0			$	60.8			$	90.7

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