PROPERTY, PLANT AND EQUIPMENT AND ACCUMULATED DEPRECIATION (Tables)

3 Months Ended

Mar. 31, 2024

Property, Plant and Equipment [Abstract]

Summary of Property, Plant, and Equipment

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

Eversource	As of March 31, 2024		As of December 31, 2023
(Millions of Dollars)
Distribution - Electric	$	19,929.5	$	19,656.5
Distribution - Natural Gas	8,234.7		8,155.3
Transmission - Electric	15,182.6		14,666.8
Distribution - Water	2,294.9		2,280.1
Solar	201.1		201.1
Utility	45,842.8		44,959.8
Other (1)	2,069.3		2,006.8
Property, Plant and Equipment, Gross	47,912.1		46,966.6
Less:  Accumulated Depreciation
Utility	(9,835.7)		(9,670.1)
Other	(916.2)		(869.6)
Total Accumulated Depreciation	(10,751.9)		(10,539.7)
Property, Plant and Equipment, Net	37,160.2		36,426.9
Construction Work in Progress	3,129.2		3,071.7
Total Property, Plant and Equipment, Net	$	40,289.4	$	39,498.6

	As of March 31, 2024						As of December 31, 2023
(Millions of Dollars)	CL&P		NSTAR Electric		PSNH		CL&P		NSTAR Electric		PSNH
Distribution - Electric	$	8,003.9	$	9,138.5	$	2,827.4	$	7,897.1	$	9,000.5	$	2,799.2
Transmission - Electric	6,609.2		6,014.5		2,560.5		6,548.2		5,630.8		2,489.5
Solar	—		201.1		—		—		201.1		—
Property, Plant and Equipment, Gross	14,613.1		15,354.1		5,387.9		14,445.3		14,832.4		5,288.7
Less:  Accumulated Depreciation	(2,707.9)		(3,648.7)		(1,004.7)		(2,670.5)		(3,585.9)		(984.0)
Property, Plant and Equipment, Net	11,905.2		11,705.4		4,383.2		11,774.8		11,246.5		4,304.7
Construction Work in Progress	627.3		1,334.9		324.4		565.4		1,507.3		270.0
Total Property, Plant and Equipment, Net	$	12,532.5	$	13,040.3	$	4,707.6	$	12,340.2	$	12,753.8	$	4,574.7

(1)    These assets are primarily comprised of computer software, hardware and equipment at Eversource Service and buildings at The Rocky River Realty Company.