Power plants in Berkshire County, Massachusetts
42 operating power plants in Berkshire County, Massachusetts, with 1,024 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Plants
42
Nameplate capacity
1,024 MW
Net generation, 2025
247 GWh
40 of 42 plants reported
Largest power plants in Berkshire County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Bear SwampPumped storage | 666 | −154 | – |
| 2 | Pittsfield Generating LPNatural gas | 176 | 135 | 8.8% |
| 3 | New England Wind LLCWind | 29 | 74.4 | 29.8% |
| 4 | Berkshire Wind Power ProjectWind | 20 | 41.9 | 24.4% |
| 5 | Deerfield 5Hydro | 18 | 44.4 | 29.0% |
| 6 | Fife BrookHydro | 11 | 0.0 | – |
| 7 | Adams Grove SolarSolar and battery storage | 8.3 | 6.0 | 13.9% |
| 8 | Partridge SolarSolar and battery storage | 7.5 | 8.1 | 20.5% |
| 9 | Skyline SolarSolar and battery storage | 7.5 | 8.2 | 20.7% |
| 10 | Williams College - Campus CHPOil and natural gas | 7.0 | 3.2 | 5.1% |
| 11 | Saddleback SolarSolar and battery storage | 6.1 | 4.5 | 14.2% |
| 12 | East Acres Solar NG, LLCSolar | 5.8 | 4.8 | 9.5% |
| 13 | Tanglewood Circle Solar 1 LLCSolar | 5.0 | 7.2 | 16.5% |
| 14 | New MarlboroughSolar | 5.0 | 6.9 | 15.9% |
| 15 | Peru (MA)Solar | 3.3 | 4.5 | 15.4% |
| 16 | Oak Leaf Solar XVII Community SolarSolar | 3.2 | 0.0 | – |
| 17 | Monument ValleySolar and battery storage | 3.0 | 3.1 | 17.9% |
| 18 | Rising PaperSolar | 2.5 | 3.4 | 15.5% |
| 19 | Downing Parkway SolarSolar | 2.3 | 3.2 | 15.7% |
| 20 | North Adams LandfillSolar | 2.2 | 3.3 | 17.1% |
| 21 | Sheffield HewinsSolar | 2.1 | 2.0 | 10.6% |
| 22 | Rail TrailSolar | 2.0 | 3.1 | 17.6% |
| 23 | Nexamp Peak CSGSolar | 2.0 | 2.1 | 11.8% |
| 24 | Syncarpha Hancock I CSGSolar | 2.0 | 2.7 | 15.5% |
| 25 | Syncarpha Hancock II CSGSolar | 2.0 | 2.8 | 15.7% |
| 26 | Hinsdale Solar PVSolar | 2.0 | 2.8 | 15.8% |
| 27 | Truck StopSolar | 2.0 | 2.5 | 14.4% |
| 28 | Harbor Road Solar 1Solar | 2.0 | 2.7 | 15.7% |
| 29 | Seaboard Sheffield, LLCSolar | 2.0 | 2.3 | 13.1% |
| 30 | Lee Site 31 SolarSolar | 1.9 | 0.1 | 0.9% |
| 31 | Kearsarge GBSolar | 1.9 | 2.9 | 17.6% |
| 32 | Berkshire 1Solar | 1.8 | 2.4 | 15.0% |
| 33 | Silver Lake Solar Photovoltaic FacilitySolar | 1.5 | 2.4 | 18.5% |
| 34 | Waste Water Treatment PlantSolar | 1.5 | – | – |
| 35 | Town of Otis Wind Energy ProjectWind | 1.5 | 3.5 | 26.6% |
| 36 | Jiminy Peak Wind QFWind | 1.5 | 0.0 | 0.0% |
| 37 | 401 SouthSolar and battery storage | 1.5 | 0.9 | 21.6% |
| 38 | Pittsfield 44 - M&W PVSolar | 1.2 | 1.5 | 14.7% |
| 39 | Glendale Hydroelectric ProjectHydro | 1.1 | – | – |
| 40 | Syncarpha Hancock III CSGSolar | 1.0 | 1.4 | 16.1% |
| 41 | NolanSolar | 1.0 | 1.4 | 16.1% |
| 42 | Oak Leaf Solar XVI Community SolarSolar | 1.0 | 0.0 | – |
MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources
More power plant lists for Massachusetts
Largest power plants in Massachusetts50 plants · 11,834 MWSolar farms in Massachusetts554 plants · 1,498 MWWind farms in Massachusetts19 plants · 897 MWBattery storage projects in Massachusetts131 projects · 739 MWNatural gas power plants in Massachusetts43 plants · 6,537 MWHydroelectric power plants in Massachusetts28 plants · 265 MW
Other counties in Massachusetts
Worcester County188 plants · 1,953 MWHampden County79 plants · 1,402 MWPlymouth County69 plants · 473 MWBristol County65 plants · 592 MWMiddlesex County59 plants · 474 MWHampshire County38 plants · 160 MWNorfolk County37 plants · 2,731 MWEssex County33 plants · 1,151 MWFranklin County33 plants · 1,334 MW