PROPERTY, PLANT AND EQUIPMENT AND ACCUMULATED DEPRECIATION (Tables)

9 Months Ended

Sep. 30, 2019

Property, Plant and Equipment [Abstract]

Public Utility Property, Plant, and Equipment

The following tables summarize property, plant and equipment by asset category:

Eversource	As of September 30, 2019			As of December 31, 2018
(Millions of Dollars)
Distribution - Electric	$	15,737.6		$	15,071.1
Distribution - Natural Gas	3,723.7			3,546.2
Transmission - Electric	10,570.6			10,153.9
Distribution - Water	1,686.3			1,639.8
Solar	199.2			164.1
Utility	31,917.4			30,575.1
Other (1)	935.2			778.6
Property, Plant and Equipment, Gross	32,852.6			31,353.7
Less:  Accumulated Depreciation
Utility	(7,417.6		)	(7,126.2		)
Other	(375.1		)	(336.7		)
Total Accumulated Depreciation	(7,792.7		)	(7,462.9		)
Property, Plant and Equipment, Net	25,059.9			23,890.8
Construction Work in Progress	1,852.0			1,719.6
Total Property, Plant and Equipment, Net	$	26,911.9		$	25,610.4

	As of September 30, 2019									As of December 31, 2018
(Millions of Dollars)	CL&P			NSTAR Electric			PSNH			CL&P			NSTAR Electric			PSNH
Distribution - Electric	$	6,417.9		$	7,102.3		$	2,257.7		$	6,176.4		$	6,756.4		$	2,178.6
Transmission - Electric	4,938.5			4,186.6			1,440.7			4,700.5			4,065.9			1,338.7
Solar	—			199.2			—			—			164.1			—
Property, Plant and Equipment, Gross	11,356.4			11,488.1			3,698.4			10,876.9			10,986.4			3,517.3
Less:  Accumulated Depreciation	(2,370.6		)	(2,860.3		)	(803.0		)	(2,302.6		)	(2,702.0		)	(772.9		)
Property, Plant and Equipment, Net	8,985.8			8,627.8			2,895.4			8,574.3			8,284.4			2,744.4
Construction Work in Progress	470.8			636.4			136.6			335.4			510.3			135.7
Total Property, Plant and Equipment, Net	$	9,456.6		$	9,264.2		$	3,032.0		$	8,909.7		$	8,794.7		$	2,880.1

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These assets are primarily comprised of building improvements, computer software, hardware and equipment at Eversource Service.