| Summary of Property, Plant, and Equipment |
The following tables summarize property, plant and equipment by asset category: | | | | | | | | | | | | | Eversource | As of March 31, 2021 | | As of December 31, 2020 | | (Millions of Dollars) | | | Distribution - Electric | $ | 16,941.8 | | | $ | 16,703.2 | | | Distribution - Natural Gas | 6,158.4 | | | 6,111.2 | | | Transmission - Electric | 12,099.4 | | | 11,954.0 | | | Distribution - Water | 1,749.0 | | | 1,743.1 | | | Solar | 200.4 | | | 201.5 | | | Utility | 37,149.0 | | | 36,713.0 | | Other (1) | 1,365.2 | | | 1,269.0 | | | Property, Plant and Equipment, Gross | 38,514.2 | | | 37,982.0 | | | Less: Accumulated Depreciation | | | | | Utility | (8,628.0) | | | (8,476.3) | | | Other | (499.0) | | | (477.6) | | | Total Accumulated Depreciation | (9,127.0) | | | (8,953.9) | | | Property, Plant and Equipment, Net | 29,387.2 | | | 29,028.1 | | | Construction Work in Progress | 1,878.6 | | | 1,854.4 | | | Total Property, Plant and Equipment, Net | $ | 31,265.8 | | | $ | 30,882.5 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As of March 31, 2021 | | As of December 31, 2020 | | (Millions of Dollars) | CL&P | | NSTAR
Electric | | PSNH | | CL&P | | NSTAR
Electric | | PSNH | | Distribution - Electric | $ | 6,919.2 | | | $ | 7,640.4 | | | $ | 2,422.5 | | | $ | 6,820.7 | | | $ | 7,544.4 | | | $ | 2,378.4 | | | Transmission - Electric | 5,561.0 | | | 4,782.9 | | | 1,757.2 | | | 5,512.0 | | | 4,701.3 | | | 1,742.4 | | | Solar | — | | | 200.4 | | | — | | | — | | | 201.5 | | | — | | Property, Plant and Equipment, Gross | 12,480.2 | | | 12,623.7 | | | 4,179.7 | | | 12,332.7 | | | 12,447.2 | | | 4,120.8 | | Less: Accumulated Depreciation | (2,523.8) | | | (3,130.9) | | | (862.7) | | | (2,475.4) | | | (3,074.1) | | | (848.9) | | Property, Plant and Equipment, Net | 9,956.4 | | | 9,492.8 | | | 3,317.0 | | | 9,857.3 | | | 9,373.1 | | | 3,271.9 | | Construction Work in Progress | 388.4 | | | 759.5 | | | 95.8 | | | 377.3 | | | 750.0 | | | 102.4 | | Total Property, Plant and Equipment, Net | $ | 10,344.8 | | | $ | 10,252.3 | | | $ | 3,412.8 | | | $ | 10,234.6 | | | $ | 10,123.1 | | | $ | 3,374.3 | |
(1) These assets are primarily comprised of computer software, hardware and equipment at Eversource Service and buildings at The Rocky River Realty Company.
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