LONG-TERM DEBT

Details of long-term debt outstanding are as follows:



CL&P (Millions of Dollars)	As of December 31,
	2018			2017
First Mortgage Bonds:
7.875% 1994 Series D due 2024	$	139.8		$	139.8
5.750% 2004 Series B due 2034	130.0			130.0
5.625% 2005 Series B due 2035	100.0			100.0
6.350% 2006 Series A due 2036	250.0			250.0
5.750% 2007 Series B due 2037	150.0			150.0
6.375% 2007 Series D due 2037	100.0			100.0
5.650% 2008 Series A due 2018	—			300.0
5.500% 2009 Series A due 2019	250.0			250.0
2.500% 2013 Series A due 2023	400.0			400.0
4.300% 2014 Series A due 2044	475.0			475.0
4.150% 2015 Series A due 2045	350.0			350.0
3.200% 2017 Series A due 2027	300.0			300.0
4.000% 2018 Series A due 2048	500.0			—
Total First Mortgage Bonds	3,144.8			2,944.8
Pollution Control Revenue Bonds:
4.375% Fixed Rate Tax Exempt due 2028	120.5			120.5
Less Amounts due Within One Year	(250.0		)	(300.0		)
Unamortized Premiums and Discounts, Net	10.2			11.5
Unamortized Debt Issuance Costs	(21.5		)	(17.7		)
CL&P Long-Term Debt	$	3,004.0		$	2,759.1



NSTAR Electric (Millions of Dollars)	As of December 31,
	2018			2017
Debentures:
5.750% due 2036	$	200.0		$	200.0
5.500% due 2040	300.0			300.0
2.375% due 2022	400.0			400.0
4.400% due 2044	300.0			300.0
3.250% due 2025	250.0			250.0
2.700% due 2026	250.0			250.0
3.200% due 2027	700.0			700.0
Total Debentures	2,400.0			2,400.0
Notes:
5.900% Senior Notes Series B due 2034	50.0			50.0
6.700% Senior Notes Series D due 2037	40.0			40.0
5.100% Senior Notes Series E due 2020	95.0			95.0
3.500% Senior Notes Series F due 2021	250.0			250.0
3.880% Senior Notes Series G due 2023	80.0			80.0
2.750% Senior Notes Series H due 2026	50.0			50.0
Total Notes	565.0			565.0
Less Amounts due Within One Year	—			—
Unamortized Premiums and Discounts, Net	(2.5		)	(1.8		)
Unamortized Debt Issuance Costs	(17.7		)	(19.4		)
NSTAR Electric Long-Term Debt	$	2,944.8		$	2,943.8



PSNH (Millions of Dollars)	As of December 31,
PSNH (Millions of Dollars)	2018			2017
First Mortgage Bonds:
5.600% Series M due 2035	$	50.0		$	50.0
6.000% Series O due 2018	—			110.0
4.500% Series P due 2019	150.0			150.0
4.050% Series Q due 2021	122.0			122.0
3.200% Series R due 2021	160.0			160.0
3.500% Series S due 2023	325.0			325.0
Total First Mortgage Bonds	807.0			917.0
Pollution Control Revenue Bonds:
Adjustable Rate Tax Exempt Series A due 2021	—			89.3
Less Amounts due Within One Year	(150.0		)	(110.0		)
Unamortized Premiums and Discounts, Net	—			0.2
Unamortized Debt Issuance Costs	(1.8		)	(4.1		)
PSNH Long-Term Debt	$	655.2		$	892.4



OTHER (Millions of Dollars)	As of December 31,
OTHER (Millions of Dollars)	2018			2017
Yankee Gas - First Mortgage Bonds: 3.020% - 8.480% due 2019 - 2048	$	470.0		$	520.0
NSTAR Gas - First Mortgage Bonds: 4.09% - 9.950% due 2020 - 2048	385.0			285.0
Eversource Parent and Other - Notes and Debentures:
4.500% Debentures due 2019	350.0			350.0
2.500% - 4.250% Senior Notes due 2021 - 2029	4,360.0			3,260.0
Unsecured Notes 3.570% - 6.430% due 2021 - 2037	289.5			290.9
Secured Debt 4.100% - 9.640% due 2021 - 2035	70.7			70.4
Pre-1983 Spent Nuclear Fuel Obligation (CYAPC)	39.5			181.4
Fair Value Adjustment⁽¹⁾	144.7			172.6
Less Fair Value Adjustment - Current Portion ⁽¹⁾	(36.2		)	(35.4		)
Less Amounts due in One Year	(401.1		)	(104.2		)
Commercial Paper Classified as Long-Term Debt	—			201.2
Unamortized Premiums and Discounts, Net	(4.2		)	1.5
Unamortized Debt Issuance Costs	(23.2		)	(12.8		)
Total Other Long-Term Debt	$	5,644.7		$	5,180.6

Total Eversource Long-Term Debt	$	12,248.7		$	11,775.9


⁽¹⁾	The fair value adjustment amount is the purchase price adjustments, net of amortization, required to record the NSTAR long-term debt at fair value on the date of the 2012 merger and to record the Aquarion long-term debt at fair value on the date of the 2017 acquisition.

Long-Term Debt Issuances and Repayments: The following table summarizes long-term debt issuances and repayments:



(Millions of Dollars)	Issue Date	Issuances/(Repayments)			Maturity Date	Use of Proceeds for Issuances/ Repayment Information
CL&P:
4.00% 2018 Series A First Mortgage Bonds	March 2018	$	500.0		April 2048	Repaid long-term debt that matured in 2018 and repaid short-term borrowings
5.65% 2008 Series A First Mortgage Bonds	May 2008	(300.0		)	May 2018	Repaid at maturity on May 1, 2018
PSNH:
6.00% 2008 Series O First Mortgage Bonds	May 2008	(110.0		)	May 2018	Repaid at maturity on May 1, 2018
2001 Series A Pollution Control Revenue Bonds	December 2001	(89.3		)	May 2021	Redeemed on November 28, 2018 at a redemption price of $89.3 million
Other:
Eversource Parent 2.50% Series I Senior Notes ⁽¹⁾	January 2018	200.0			March 2021	Repaid short-term borrowings
Eversource Parent 3.30% Series M Senior Notes	January 2018	450.0			January 2028	Repaid long-term debt that matured in 2018
Eversource Parent 3.80% Series N Senior Notes	December 2018	400.0			December 2023	Repaid short-term borrowings
Eversource Parent 4.25% Series O Senior Notes	December 2018	500.0			April 2029	Repaid short-term borrowings
Eversource Parent 1.60% Series G Senior Notes	January 2015	(150.0		)	January 2018	Repaid at maturity on January 15, 2018
Eversource Parent 1.45% Series E Senior Notes	May 2013	(300.0		)	May 2018	Repaid at maturity on May 1, 2018
Yankee Gas 4.13% Series O First Mortgage Bonds	September 2018	50.0			October 2048	Repaid long-term debt that matured in 2018
Yankee Gas 6.90% Series J First Mortgage Bonds	October 2008	(100.0		)	October 2018	Repaid at maturity on October 1, 2018
NSTAR Gas 4.09% Series P First Mortgage Bonds	September 2018	100.0			October 2048	Repaid short-term borrowings

⁽¹⁾ These notes are part of the same series issued by Eversource parent in March 2016. The aggregate outstanding principal amount of these notes is now $450 million.

As a result of the Eversource parent debt issuances in January 2018, $446.8 million of current portion of long-term debt related to two Eversource parent issuances maturing in 2018 and $201.2 million of commercial paper borrowings were reclassified to Long-Term Debt as of December 31, 2017.

Long-Term Debt Issuance Authorizations: On August 1, 2018, the DPU approved NSTAR Gas’ request for authorization to issue up to $200 million in long-term debt through December 31, 2019. On December 3, 2018, FERC authorized NPT to issue up to an aggregate of $800 million in short-term debt and long-term debt through December 31, 2020.

Long-Term Debt Provisions: The utility plant of CL&P, PSNH, Yankee Gas, NSTAR Gas and a portion of Aquarion is subject to the lien of each company's respective first mortgage bond indenture. The Eversource parent, NSTAR Electric and certain Aquarion debt is unsecured. Additionally, the long-term debt agreements provide that Eversource and certain of its subsidiaries must comply with certain covenants as are customarily included in such agreements, including equity requirements for NSTAR Electric and NSTAR Gas. Under the equity requirements, NSTAR Electric's and Aquarion's senior notes must maintain a certain consolidated indebtedness to capitalization ratio as of the end of any fiscal quarter and NSTAR Gas' outstanding long-term debt must not exceed equity.

CL&P's obligation to repay the PCRBs is secured by first mortgage bonds. The first mortgage bonds contain similar terms and provisions as the applicable series of PCRBs. If CL&P fails to meet its obligations under the first mortgage bonds, then the holder of the first mortgage bonds (the issuer of the PCRBs) would have rights under the first mortgage bonds. CL&P's tax-exempt PCRBs will be subject to redemption at par on or after September 1, 2021.

Certain secured and unsecured long-term debt securities are callable at redemption price or are subject to make-whole provisions.

Eversource, NSTAR Electric, Yankee Gas and Aquarion have certain long-term debt agreements that contain cross-default provisions. No other debt issuances contain cross-default provisions as of December 31, 2018.

Pre-1983 Spent Nuclear Fuel Obligation: Under the Nuclear Waste Policy Act of 1982, the DOE is responsible for the selection and development of repositories for, and the disposal of, spent nuclear fuel and high-level radioactive waste. CYAPC is obligated to pay the DOE for the costs to dispose of spent nuclear fuel and high-level radioactive waste generated prior to April 7, 1983 (pre-1983 Spent Nuclear Fuel) and recorded an accrual for the full liability thereof to the DOE. This liability accrues interest costs at the 3-month Treasury bill yield rate. For nuclear fuel used to generate electricity prior to April 7, 1983, payment may be made any time prior to the first delivery of spent fuel to the DOE. Fees for disposal of nuclear fuel burned on or after April 7, 1983 were billed to member companies and paid to the DOE.

As of December 31, 2018 and 2017, as a result of consolidating CYAPC, Eversource has consolidated $39.5 million and $181.4 million, respectively, in pre-1983 spent nuclear fuel obligations to the DOE. In December 2018, CYAPC paid $145 million to the DOE to partially settle this obligation. The obligation includes accumulated interest costs of $29.0 million and $132.6 million as of December 31, 2018 and 2017, respectively. CYAPC maintains a trust to fund amounts due to the DOE for the disposal of pre-1983 spent nuclear fuel. For further information, see Note 5, "Marketable Securities," to the financial statements.

Long-Term Debt Maturities: Long-term debt maturities on debt outstanding for the years 2019 through 2023 and thereafter are shown below. These amounts exclude the CYAPC pre-1983 spent nuclear fuel obligation, net unamortized premiums, discounts and debt issuance costs, and other fair value adjustments as of December 31, 2018:



(Millions of Dollars)	Eversource		CL&P		NSTAR Electric		PSNH
2019	$	801.1	$	250.0	$	—	$	150.0
2020	296.1		—		95.0		—
2021	1,033.5		—		250.0		282.0
2022	1,188.9		—		400.0		—
2023	1,665.2		400.0		80.0		325.0
Thereafter	7,977.7		2,615.3		2,140.0		50.0
Total	$	12,962.5	$	3,265.3	$	2,965.0	$	807.0