REGULATORY ACCOUNTING (Tables)

3 Months Ended

Mar. 31, 2019

Regulated Operations [Abstract]

Components of Regulatory Assets

The components of regulatory assets were as follows:

	As of March 31, 2019								As of December 31, 2018
(Millions of Dollars)	Eversource		CL&P		NSTAR Electric		PSNH		Eversource		CL&P		NSTAR Electric		PSNH
Benefit Costs	$	1,878.7	$	416.0	$	534.9	$	165.8	$	1,914.8	$	424.7	$	544.4	$	169.6
Income Taxes, Net	730.9		454.3		106.1		8.0		728.6		454.4		105.9		8.3
Securitized Stranded Costs	597.7		—		—		597.7		608.4		—		—		608.4
Storm Restoration Costs, Net	579.0		307.4		204.4		67.2		576.0		302.6		212.9		60.5
Regulatory Tracker Mechanisms	317.7		54.4		160.2		78.0		316.0		33.2		169.1		67.3
Derivative Liabilities	353.5		353.1		—		—		356.5		356.5		—		—
Goodwill-related	344.2		—		295.5		—		348.4		—		299.1		—
Asset Retirement Obligations	92.8		32.8		44.9		3.4		89.2		32.3		42.2		3.3
Other Regulatory Assets	202.2		26.4		62.6		11.9		208.0		27.0		64.6		12.1
Total Regulatory Assets	5,096.7		1,644.4		1,408.6		932.0		5,145.9		1,630.7		1,438.2		929.5
Less:  Current Portion	507.3		147.7		234.7		76.6		514.8		125.2		241.7		67.2
Total Long-Term Regulatory Assets	$	4,589.4	$	1,496.7	$	1,173.9	$	855.4	$	4,631.1	$	1,505.5	$	1,196.5	$	862.3

Components of Regulatory Liabilities

The components of regulatory liabilities were as follows:

	As of March 31, 2019								As of December 31, 2018
(Millions of Dollars)	Eversource		CL&P		NSTAR Electric		PSNH		Eversource		CL&P		NSTAR Electric		PSNH
EDIT due to Tax Cuts and Jobs Act	$	2,871.4	$	1,030.7	$	1,096.7	$	394.6	$	2,883.0	$	1,031.0	$	1,103.7	$	396.4
Cost of Removal	535.0		46.2		313.4		22.1		521.0		39.9		307.1		22.1
Benefit Costs	87.2		—		73.6		—		91.2		—		76.9		—
Regulatory Tracker Mechanisms	332.5		79.5		166.7		39.9		309.0		89.5		163.7		48.3
AFUDC - Transmission	71.4		47.1		24.3		—		70.7		47.4		23.3		—
Revenue Subject to Refund due to Tax Cuts   and Jobs Act	27.0		—		—		15.8		24.6		—		—		12.6
Other Regulatory Liabilities	88.3		29.3		33.9		3.2		80.2		24.0		29.2		4.2
Total Regulatory Liabilities	4,012.8		1,232.8		1,708.6		475.6		3,979.7		1,231.8		1,703.9		483.6
Less:  Current Portion	385.4		106.5		194.0		45.7		370.2		109.6		190.6		55.5
Total Long-Term Regulatory Liabilities	$	3,627.4	$	1,126.3	$	1,514.6	$	429.9	$	3,609.5	$	1,122.2	$	1,513.3	$	428.1