REGULATORY ACCOUNTING (Tables)

12 Months Ended

Dec. 31, 2023

Regulated Operations [Abstract]

Components of Regulatory Assets

The components of regulatory assets were as follows:

	As of December 31,
	2023								2022
(Millions of Dollars)	Eversource		CL&P		NSTAR Electric		PSNH		Eversource		CL&P		NSTAR Electric		PSNH
Storm Costs, Net	$	1,785.9	$	896.6	$	609.1	$	280.2	$	1,379.1	$	799.3	$	484.4	$	95.4
Regulatory Tracking Mechanisms	1,319.2		354.5		482.9		182.2		1,075.3		216.8		391.5		73.7
Benefit Costs	1,117.3		197.4		336.7		79.3		921.7		156.7		299.5		56.6
Income Taxes, Net	912.4		512.6		128.6		16.4		853.3		491.1		115.6		16.0
Securitized Stranded Costs	392.5		—		—		392.5		435.7		—		—		435.7
Goodwill-related	264.1		—		226.7		—		281.0		—		241.2		—
Asset Retirement Obligations	137.9		38.5		72.3		4.7		127.9		35.9		68.2		4.4
Derivative Liabilities	120.9		120.9		—		—		181.8		181.8		—		—
Other Regulatory Assets	339.0		22.7		101.6		8.0		322.5		26.2		114.0		14.4
Total Regulatory Assets	6,389.2		2,143.2		1,957.9		963.3		5,578.3		1,907.8		1,714.4		696.2
Less:  Current Portion	1,674.2		480.4		676.1		189.5		1,335.5		314.1		492.8		102.2
Total Long-Term Regulatory Assets	$	4,715.0	$	1,662.8	$	1,281.8	$	773.8	$	4,242.8	$	1,593.7	$	1,221.6	$	594.0

Components of Regulatory Liabilities

The components of regulatory liabilities were as follows:

	As of December 31,
	2023								2022
(Millions of Dollars)	Eversource		CL&P		NSTAR Electric		PSNH		Eversource		CL&P		NSTAR Electric		PSNH
EDIT due to Tax Cuts and Jobs Act of 2017	$	2,548.6	$	969.2	$	905.1	$	339.3	$	2,619.3	$	983.6	$	944.3	$	348.6
Cost of Removal	666.6		157.9		420.9		16.2		670.6		130.8		405.3		14.7
Regulatory Tracking Mechanisms	668.3		154.0		347.2		114.4		890.8		361.0		336.1		155.0
Deferred Portion of Non-Service Income    Components of Pension, SERP and PBOP	354.0		49.9		175.9		36.6		270.9		34.5		139.7		28.8
AFUDC - Transmission	124.3		56.1		68.2		—		98.2		48.2		50.0		—
Benefit Costs	51.0		0.6		22.2		—		55.4		0.7		31.4		—
Other Regulatory Liabilities	201.9		30.4		13.9		4.6		215.9		40.6		14.5		6.5
Total Regulatory Liabilities	4,614.7		1,418.1		1,953.4		511.1		4,821.1		1,599.4		1,921.3		553.6
Less:  Current Portion	591.8		102.2		368.1		117.5		890.8		336.0		373.2		162.0
Total Long-Term Regulatory Liabilities	$	4,022.9	$	1,315.9	$	1,585.3	$	393.6	$	3,930.3	$	1,263.4	$	1,548.1	$	391.6