PROPERTY, PLANT AND EQUIPMENT AND ACCUMULATED DEPRECIATION

9 Months Ended

Sep. 30, 2018

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT AND EQUIPMENT AND ACCUMULATED DEPRECIATION

PROPERTY, PLANT AND EQUIPMENT AND ACCUMULATED DEPRECIATION

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

Eversource	As of September 30, 2018			As of December 31, 2017
(Millions of Dollars)
Distribution - Electric	$	14,794.9		$	14,410.5
Distribution - Natural Gas	3,371.2			3,244.2
Transmission - Electric	9,733.6			9,270.9
Distribution - Water	1,594.3			1,558.4
Solar	109.3			36.2
Utility	29,603.3			28,520.2
Other (1)	759.0			693.7
Property, Plant and Equipment, Gross	30,362.3			29,213.9
Less:  Accumulated Depreciation
Utility	(7,065.4		)	(6,846.9		)
Other	(325.4		)	(286.9		)
Total Accumulated Depreciation	(7,390.8		)	(7,133.8		)
Property, Plant and Equipment, Net	22,971.5			22,080.1
Construction Work in Progress	1,996.2			1,537.4
Total Property, Plant and Equipment, Net	$	24,967.7		$	23,617.5

	As of September 30, 2018									As of December 31, 2017
(Millions of Dollars)	CL&P			NSTAR Electric			PSNH			CL&P			NSTAR Electric			PSNH
Distribution	$	6,027.1		$	6,651.1		$	2,157.0		$	5,888.3		$	6,479.0		$	2,083.4
Transmission	4,513.7			3,915.5			1,255.6			4,239.9			3,821.2			1,161.3
Solar	—			109.3			—			—			36.2			—
Property, Plant and Equipment, Gross	10,540.8			10,675.9			3,412.6			10,128.2			10,336.4			3,244.7
Less:  Accumulated Depreciation	(2,297.4		)	(2,673.0		)	(762.1		)	(2,239.0		)	(2,550.2		)	(751.8		)
Property, Plant and Equipment, Net	8,243.4			8,002.9			2,650.5			7,889.2			7,786.2			2,492.9
Construction Work in Progress	510.3			573.2			176.0			381.8			460.3			149.4
Total Property, Plant and Equipment, Net	$	8,753.7		$	8,576.1		$	2,826.5		$	8,271.0		$	8,246.5		$	2,642.3

⁽¹⁾  These assets are primarily comprised of building improvements, computer software, hardware and equipment at Eversource Service.