REGULATORY ACCOUNTING (Tables)

12 Months Ended

Dec. 31, 2021

Regulated Operations [Abstract]

Components of Regulatory Assets

The components of regulatory assets were as follows:

	As of December 31,
	2021								2020
(Millions of Dollars)	Eversource		CL&P		NSTAR Electric		PSNH		Eversource		CL&P		NSTAR Electric		PSNH
Benefit Costs	$	1,481.0	$	272.4	$	395.5	$	118.9	$	2,794.2	$	632.3	$	690.0	$	267.6
Income Taxes, Net	790.7		470.5		112.6		17.5		747.1		458.9		110.4		15.2
Securitized Stranded Costs	478.9		—		—		478.9		522.1		—		—		522.1
Storm Costs, Net	1,102.7		695.6		341.3		65.8		765.6		515.1		186.4		64.1
Regulatory Tracker Mechanisms	1,050.5		333.6		376.6		85.4		850.5		246.6		332.2		95.3
Derivative Liabilities	249.2		249.2		—		—		296.3		293.1		—		—
Goodwill-related	297.8		—		255.7		—		314.7		—		270.2		—
Asset Retirement Obligations	115.0		33.6		59.8		4.1		118.4		32.1		58.6		3.9
Other Regulatory Assets	150.0		29.9		37.7		15.8		161.0		33.7		56.1		20.9
Total Regulatory Assets	5,715.8		2,084.8		1,579.2		786.4		6,569.9		2,211.8		1,703.9		989.1
Less:  Current Portion	1,129.1		371.6		444.0		107.2		1,076.6		345.6		399.9		115.9
Total Long-Term Regulatory Assets	$	4,586.7	$	1,713.2	$	1,135.2	$	679.2	$	5,493.3	$	1,866.2	$	1,304.0	$	873.2

Components of Regulatory Liabilities

The components of regulatory liabilities were as follows:

	As of December 31,
	2021								2020
(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	$	2,685.2	$	996.1	$	984.5	$	359.2	$	2,778.6	$	1,010.7	$	1,044.0	$	371.5
Cost of Removal	649.6		100.1		381.0		17.2		624.8		98.4		363.6		12.9
Benefit Costs	133.5		—		107.4		—		83.6		—		72.5		—
Regulatory Tracker Mechanisms	448.4		182.0		185.1		107.0		366.5		148.9		139.7		47.8
AFUDC - Transmission	81.0		43.2		37.8		—		76.8		44.6		32.2		—
CL&P Settlement Agreement and Storm    Performance Penalty	81.3		81.3		—		—		—		—		—		—
Other Regulatory Liabilities	389.7		57.1		91.5		18.2		309.9		39.5		63.2		9.8
Total Regulatory Liabilities	4,468.7		1,459.8		1,787.3		501.6		4,240.2		1,342.1		1,715.2		442.0
Less:  Current Portion	602.4		266.5		228.2		120.2		389.4		137.2		164.8		58.8
Total Long-Term Regulatory Liabilities	$	3,866.3	$	1,193.3	$	1,559.1	$	381.4	$	3,850.8	$	1,204.9	$	1,550.4	$	383.2