REGULATORY ACCOUNTING (Tables)

6 Months Ended

Jun. 30, 2017

Regulated Operations [Abstract]

Schedule of Regulatory Assets

The components of regulatory assets were as follows:

Eversource	As of June 30, 2017		As of December 31, 2016
(Millions of Dollars)
Benefit Costs	$	1,833.6	$	1,817.8
Derivative Liabilities	398.1		423.3
Income Taxes, Net	652.5		644.5
Storm Restoration Costs	352.9		385.3
Goodwill-related	454.2		464.4
Regulatory Tracker Mechanisms	584.3		576.6
Asset Retirement Obligations	103.0		99.3
Other Regulatory Assets	72.8		115.1
Total Regulatory Assets	4,451.4		4,526.3
Less:  Current Portion	870.4		887.6
Total Long-Term Regulatory Assets	$	3,581.0	$	3,638.7

	As of June 30, 2017								As of December 31, 2016
(Millions of Dollars)	CL&P		NSTAR Electric		PSNH		WMECO		CL&P		NSTAR Electric		PSNH		WMECO
Benefit Costs	$	423.5	$	445.6	$	189.7	$	86.4	$	429.3	$	438.6	$	184.2	$	86.7
Derivative Liabilities	394.8		2.3		—		—		420.5		2.8		—		—
Income Taxes, Net	440.7		91.2		22.4		31.2		437.0		89.7		24.2		30.8
Storm Restoration Costs	210.3		115.3		12.9		14.4		239.8		112.5		17.1		15.9
Goodwill-related	—		389.9		—		—		—		398.7		—		—
Regulatory Tracker Mechanisms	153.0		240.7		125.7		50.5		123.9		257.3		104.5		46.7
Asset Retirement Obligations	34.5		33.2		16.6		4.4		33.2		31.9		16.2		4.2
Other Regulatory Assets	32.7		16.1		14.7		5.3		43.4		15.6		16.5		7.1
Total Regulatory Assets	1,689.5		1,334.3		382.0		192.2		1,727.1		1,347.1		362.7		191.4
Less:  Current Portion	346.5		270.2		132.4		67.3		335.5		289.4		117.2		64.1
Total Long-Term Regulatory Assets	$	1,343.0	$	1,064.1	$	249.6	$	124.9	$	1,391.6	$	1,057.7	$	245.5	$	127.3

Schedule of Regulatory Liabilities

The components of regulatory liabilities were as follows:

Eversource	As of June 30, 2017		As of December 31, 2016
(Millions of Dollars)
Cost of Removal	$	474.4	$	459.7
Benefit Costs	129.5		136.2
Regulatory Tracker Mechanisms	176.3		145.3
AFUDC - Transmission	65.6		65.8
Other Regulatory Liabilities	36.8		42.1
Total Regulatory Liabilities	882.6		849.1
Less:  Current Portion	185.9		146.8
Total Long-Term Regulatory Liabilities	$	696.7	$	702.3

	As of June 30, 2017								As of December 31, 2016
(Millions of Dollars)	CL&P		NSTAR Electric		PSNH		WMECO		CL&P		NSTAR Electric		PSNH		WMECO
Cost of Removal	$	43.4	$	277.4	$	42.8	$	12.4	$	38.8	$	271.6	$	44.1	$	8.6
Benefit Costs	—		109.4		—		—		—		113.1		—		—
Regulatory Tracker Mechanisms	47.5		48.4		11.7		10.9		37.2		63.7		10.7		14.7
AFUDC - Transmission	49.5		7.4		—		8.7		50.2		6.9		—		8.7
Other Regulatory Liabilities	23.7		0.3		3.0		—		21.0		0.2		2.7		0.1
Total Regulatory Liabilities	164.1		442.9		57.5		32.0		147.2		455.5		57.5		32.1
Less:  Current Portion	62.2		48.4		13.7		11.1		47.1		63.7		12.7		14.9
Total Long-Term Regulatory Liabilities	$	101.9	$	394.5	$	43.8	$	20.9	$	100.1	$	391.8	$	44.8	$	17.2