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PROPERTY, PLANT AND EQUIPMENT AND ACCUMULATED DEPRECIATION (Tables)
 6 Months Ended
Jun. 30, 2020
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 June 30, 2020
 
As of December 31, 2019
(Millions of Dollars)
 
Distribution - Electric
$
16,289.5

 
$
15,880.0

Distribution - Natural Gas
4,025.6

 
3,931.1

Transmission - Electric
11,330.7

 
10,958.4

Distribution - Water
1,760.4

 
1,726.5

Solar
201.2

 
200.2

Utility
33,607.4

 
32,696.2

Other (1)
1,136.3

 
1,025.6

Property, Plant and Equipment, Gross
34,743.7

 
33,721.8

Less:  Accumulated Depreciation
 
 
 
Utility   
(7,689.5
)
 
(7,483.5
)
Other
(431.4
)
 
(387.4
)
Total Accumulated Depreciation
(8,120.9
)
 
(7,870.9
)
Property, Plant and Equipment, Net
26,622.8

 
25,850.9

Construction Work in Progress
1,988.0

 
1,734.6

Total Property, Plant and Equipment, Net
$
28,610.8

 
$
27,585.5


 
As of June 30, 2020
 
As of December 31, 2019
(Millions of Dollars)
CL&P
 
NSTAR
Electric
 
PSNH
 
CL&P
 
NSTAR
Electric
 
PSNH
Distribution - Electric
$
6,683.8

 
$
7,328.8

 
$
2,317.2

 
$
6,485.5

 
$
7,163.7

 
$
2,271.1

Transmission - Electric
5,166.4

 
4,509.3

 
1,650.2

 
5,043.0

 
4,411.9

 
1,498.7

Solar
—

 
201.2

 
—

 
—

 
200.2

 
—

Property, Plant and Equipment, Gross
11,850.2

 
12,039.3

 
3,967.4

 
11,528.5

 
11,775.8

 
3,769.8

Less:  Accumulated Depreciation
(2,445.6
)
 
(2,969.8
)
 
(826.0
)
 
(2,385.7
)
 
(2,895.3
)
 
(799.9
)
Property, Plant and Equipment, Net
9,404.6

 
9,069.5

 
3,141.4

 
9,142.8

 
8,880.5

 
2,969.9

Construction Work in Progress
508.7

 
703.7

 
117.2

 
483.0

 
592.3

 
159.6

Total Property, Plant and Equipment, Net
$
9,913.3

 
$
9,773.2

 
$
3,258.6

 
$
9,625.8

 
$
9,472.8

 
$
3,129.5



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