Directory of Power Plants in Massachusetts
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Adams Grove Solar | SoCore Energy LLC | Adams, MA | ISO New England (ISNE) | 6.0 GWh | Aug 2022 | Dec 2025 | Solar |
| Apollo | Sunrise on Wing Ln. LLC | Acushnet, MA | ISO New England (ISNE) | 2.5 GWh | Aug 2021 | Dec 2025 | Solar |
| Marston Mills Solar | SoCore Energy LLC | Marstons Mills, MA | ISO New England (ISNE) | 6.3 GWh | Nov 2021 | Dec 2025 | Solar |
| 20 Bedford | Madison Energy Investments LLC | Bridgewater, MA | ISO New England (ISNE) | 146.0 MWh | Nov 2024 | Dec 2025 | Solar |
| 376 Nash | Madison Energy Investments LLC | New Bedford, MA | ISO New England (ISNE) | 17.0 MWh | Nov 2024 | Dec 2025 | Solar |
| BWC Mystic River | BWC Mystic River LLC | Mendon, MA | ISO New England (ISNE) | 1.8 GWh | Jun 2017 | Dec 2025 | Solar |
| BWC Origination 19 | BWC Origination 19 LLC | Hopedale, MA | ISO New England (ISNE) | 1.7 GWh | Jul 2017 | Dec 2025 | Solar |
| BWC Origination 8 LLC Sturbridge 1 | BWC Origination 8 LLC Sturbridge 1 LLC | Sturbridge, MA | ISO New England (ISNE) | 1.2 GWh | Jul 2017 | Dec 2025 | Solar |
| BWC Origination 8 LLC Sturbridge 2 | BWC Origination 8 LLC Sturbridge 2 LLC | Sturbridge, MA | ISO New England (ISNE) | 1.3 GWh | Aug 2017 | Dec 2025 | Solar |
| Dudley Landfill Solar LLC | Dudley Landfill Solar LLC | Dudley, MA | ISO New England (ISNE) | 1.2 GWh | Apr 2025 | Dec 2025 | Solar |
| Hampden Landfill Solar LLC | Hampden Landfill Solar LLC | Hampden, MA | ISO New England (ISNE) | 1.8 GWh | Nov 2024 | Dec 2025 | Solar |
| Danton XI Solar LLC | Danton XI Solar LLC | Methuen, MA | ISO New England (ISNE) | 1.8 GWh | Dec 2013 | Dec 2025 | Solar |
| NL MA - Copicut | Standard Solar | Freetown, MA | ISO New England (ISNE) | 6.1 GWh | May 2025 | Dec 2025 | Solar |
| Ava Solar | Ecos Energy LLC | Ware, MA | ISO New England (ISNE) | 1.7 GWh | Nov 2023 | Dec 2025 | Solar |
| 0 Middle | Madison Energy Investments LLC | Chatham, MA | ISO New England (ISNE) | 3.4 GWh | Aug 2022 | Dec 2025 | Solar |
| 15 Lincoln | Madison Energy Investments LLC | Norfolk, MA | ISO New England (ISNE) | 1.4 GWh | Nov 2022 | Dec 2025 | Solar |
| TJA MA Wakeby Road | Standard Solar | Barnstable, MA | ISO New England (ISNE) | 1.0 GWh | Aug 2025 | Dec 2025 | Solar |
| Stanley Black & Decker | Onyx Asset Services Group | East Longmeadow, MA | ISO New England (ISNE) | 6.0 MWh | Nov 2025 | Dec 2025 | Solar |
| Sheffield Hewins | Navisun LLC | Sheffield, MA | ISO New England (ISNE) | 2.0 GWh | Nov 2022 | Dec 2025 | Solar |
| GSPP Worcester Business Center, LLC | Green Street Power Partners | Worcester, MA | ISO New England (ISNE) | 300.0 MWh | Jul 2025 | Dec 2025 | Solar |
| Medway Grid | Medway Grid LLC | Medway, MA | ISO New England (ISNE) | 18.4 GWh | - | Jun 2026 | Electricity used for energy storage |
| General Electric Aircraft Engines | General Electric Aircraft Engines | Lynn, MA | ISO New England (ISNE) | 2.4 GWh | Dec 1947 | Jul 2026 | Solar |
| Kendall Square Station | Kendall Green Energy, LLC | Cambridge, MA | ISO New England (ISNE) | 1.4 TWh | May 1949 | Aug 2026 | Natural Gas : 97.3% Distillate Fuel Oil : 2.7% |
| Canal | Canal Generating LLC | Sandwich, MA | ISO New England (ISNE) | 447.0 GWh | May 1968 | Aug 2026 | Residual Fuel Oil : 58.2% Natural Gas : 31.0% Distillate Fuel Oil : 10.8% |
| Stony Brook | Massachusetts Mun Wholes Electric Co | Ludlow, MA | ISO New England (ISNE) | 123.8 GWh | Oct 1981 | Aug 2026 | Distillate Fuel Oil : 79.0% Natural Gas : 21.0% |
| Indian Orchard Plant 1 | Solutia Inc-Indian | Springfield, MA | ISO New England (ISNE) | 11.8 GWh | Apr 1985 | Aug 2026 | Natural Gas |
| Pepperell Hydro Power Plant | Eagle Creek Renewable Energy, LLC | Pepperell, MA | ISO New England (ISNE) | 2.2 GWh | Dec 1919 | Aug 2026 | Water |
| Deer Island Treatment Plant | Massachusetts Wtr Rauth-Deer I | Winthrop, MA | ISO New England (ISNE) | 31.8 GWh | Jul 1995 | Aug 2026 | Other Biomass Gas : 81.6% Distillate Fuel Oil : 13.8% Wind : 2.8% Solar : 1.8% |
| Pittsfield Generating LP | Pittsfield Generating Company, LP | Pittsfield, MA | ISO New England (ISNE) | 43.7 GWh | Jun 1990 | Aug 2026 | Natural Gas : 90.2% Distillate Fuel Oil : 9.8% |
| SEMASS Resource Recovery | SEMASS Partnership | West Wareham, MA | ISO New England (ISNE) | 537.3 GWh | Jun 1988 | Aug 2026 | Non-biogenic Municipal Solid Waste : 53.8% Biogenic Municipal Solid Waste : 44.0% Natural Gas : 2.0% |
| Covanta Haverhill | Ogden Projects Inc-Haverhill | Haverhill, MA | ISO New England (ISNE) | 292.5 GWh | Apr 1989 | Aug 2026 | Non-biogenic Municipal Solid Waste : 54.8% Biogenic Municipal Solid Waste : 44.8% |
| Wheelabrator North Andover | Wheelabrator Environmental Systems | North Andover, MA | ISO New England (ISNE) | 245.8 GWh | Apr 1985 | Aug 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wheelabrator Millbury Facility | Wheelabrator Environmental Systems | Millbury, MA | ISO New England (ISNE) | 288.1 GWh | Aug 1987 | Aug 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wheelabrator Saugus | Wheelabrator Environmental Systems | Saugus, MA | ISO New England (ISNE) | 180.9 GWh | Jul 1985 | Aug 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Gillette SBMC | The Gillette Company | Boston, MA | ISO New England (ISNE) | 59.5 GWh | Jan 1971 | Aug 2026 | Natural Gas |
| Erving Paper Mills | Erving Paper Mills Inc | Erving, MA | ISO New England (ISNE) | 42.6 GWh | Nov 2013 | Aug 2026 | Natural Gas : 98.1% Distillate Fuel Oil : 1.9% |
| Millennium Power | Millennium Power Company, LLC | Charlton, MA | ISO New England (ISNE) | 908.0 GWh | Mar 2001 | Aug 2026 | Natural Gas |
| ANP Bellingham Energy Project | Bellingham Power Generation LLC | Bellingham, MA | ISO New England (ISNE) | 2.7 TWh | Oct 2002 | Aug 2026 | Natural Gas |
| ANP Blackstone Energy Project | ANP Blackstone Energy Company LLC | Blackstone, MA | ISO New England (ISNE) | 2.5 TWh | May 2001 | Aug 2026 | Natural Gas |
| Fore River Generating Station | Calpine Fore River Energy Center, LLC | North Weymouth, MA | ISO New England (ISNE) | 2.5 TWh | Jul 2003 | Aug 2026 | Natural Gas : 91.7% Distillate Fuel Oil : 8.3% |
| New England Wind LLC | Avangrid Power LLC | Florida, MA | ISO New England (ISNE) | 76.2 GWh | Nov 2012 | Aug 2026 | Wind |
| Berkshire Wind Power Project | Massachusetts Mun Wholes Electric Co | Lanesboro, MA | ISO New England (ISNE) | 27.3 GWh | Apr 2011 | Aug 2026 | Wind |
| Mt Wachusett Community College | Mt Wachusett Community College | Gardner, MA | ISO New England (ISNE) | 4.6 GWh | Feb 2011 | Aug 2026 | Wind |
| Cottage Street Solar Facility | Western Massachusetts Electric Company | Springfield, MA | ISO New England (ISNE) | 4.3 GWh | Apr 2014 | Aug 2026 | Solar |
| Cape Cod Air Force Station - 6 SWS | US Space Force | Sagamore, MA | ISO New England (ISNE) | 6.2 GWh | Dec 2013 | Aug 2026 | Wind |
| Dept of Corrections NCCI Wind | Dept of Corrections NCCI Wind | Gardner, MA | ISO New England (ISNE) | 2.1 GWh | Oct 2013 | Aug 2026 | Wind |
| Framingham State University Plant | Framingham State University | Framingham, MA | ISO New England (ISNE) | 53.0 MWh | May 1974 | Aug 2026 | Solar : 66.0% Distillate Fuel Oil : 34.0% |
| Spring Hill Road | AES Distributed Energy | Barre, MA | ISO New England (ISNE) | 286.0 MWh | Nov 2015 | Aug 2026 | Solar |
| Exelon West Medway II LLC | Constellation Power, Inc | Medway, MA | ISO New England (ISNE) | 228.1 GWh | Feb 2019 | Aug 2026 | Natural Gas : 94.6% Kerosene : 5.4% |
| Southbridge Solar | AES Distributed Energy | Southbridge, MA | ISO New England (ISNE) | 1.3 GWh | Feb 2016 | Aug 2026 | Solar |
| Salem Harbor Power Development LP | Salem Harbor Power Development LP | Salem, MA | ISO New England (ISNE) | 1.2 TWh | Apr 2018 | Aug 2026 | Natural Gas |
| Southwick Solar PV | NSTAR Electric Company | Southwick, MA | ISO New England (ISNE) | 7.9 GWh | Dec 2018 | Aug 2026 | Solar |
| Montague Site 36-Grosolar | NSTAR Electric Company | Millers Falls, MA | ISO New England (ISNE) | 5.7 GWh | Sep 2018 | Aug 2026 | Solar |
| Vineyard Wind 1 | Vineyard Wind 1 LLC | Edgartown, MA | ISO New England (ISNE) | 866.5 GWh | - | Aug 2026 | Wind |
Browse Power Plants By Massachusetts Counties
Figures are based on August 2026 generation numbers.| County | State Rank | Active Plants | Aug 2026 Generation |
|---|---|---|---|
| Norfolk County, MA | # 1 | 40 | 5.9 TWh |
| Worcester County, MA | # 2 | 200 | 4.9 TWh |
| Essex County, MA | # 3 | 41 | 2.1 TWh |
| Middlesex County, MA | # 4 | 70 | 1.9 TWh |
| Hampden County, MA | # 5 | 90 | 1.9 TWh |
| Dukes County, MA | # 6 | 7 | 879.6 GWh |
| Plymouth County, MA | # 7 | 86 | 797.7 GWh |
| County | State Rank | Active Plants | Aug 2026 Generation |
|---|---|---|---|
| Bristol County, MA | # 8 | 75 | 645.7 GWh |
| Barnstable County, MA | # 9 | 25 | 531.6 GWh |
| Suffolk County, MA | # 10 | 14 | 427.6 GWh |
| Hampshire County, MA | # 11 | 39 | 226.3 GWh |
| Franklin County, MA | # 12 | 33 | 172.4 GWh |
| Berkshire County, MA | # 13 | 46 | 85.8 GWh |