Directory of Power Plants in Massachusetts
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| 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 |
| Stanley Black & Decker | Onyx Asset Services Group | East Longmeadow, MA | ISO New England (ISNE) | 6.0 MWh | Nov 2025 | Dec 2025 | Solar |
| Kendall Square Station | Kendall Green Energy, LLC | Cambridge, MA | ISO New England (ISNE) | 1.4 TWh | May 1949 | Jun 2026 | Natural Gas : 97.3% Distillate Fuel Oil : 2.7% |
| Canal | Canal Generating LLC | Sandwich, MA | ISO New England (ISNE) | 528.7 GWh | May 1968 | Jun 2026 | Residual Fuel Oil : 54.7% Natural Gas : 35.0% Distillate Fuel Oil : 10.4% |
| Stony Brook | Massachusetts Mun Wholes Electric Co | Ludlow, MA | ISO New England (ISNE) | 140.7 GWh | Oct 1981 | Jun 2026 | Distillate Fuel Oil : 70.0% Natural Gas : 30.0% |
| General Electric Aircraft Engines | General Electric Aircraft Engines | Lynn, MA | ISO New England (ISNE) | 2.5 GWh | Dec 1947 | Jun 2026 | Solar |
| Indian Orchard Plant 1 | Solutia Inc-Indian | Springfield, MA | ISO New England (ISNE) | 8.5 GWh | Apr 1985 | Jun 2026 | Natural Gas |
| Pepperell Hydro Power Plant | Eagle Creek Renewable Energy, LLC | Pepperell, MA | ISO New England (ISNE) | 2.1 GWh | Dec 1919 | Jun 2026 | Water |
| Deer Island Treatment Plant | Massachusetts Wtr Rauth-Deer I | Winthrop, MA | ISO New England (ISNE) | 32.9 GWh | Jul 1995 | Jun 2026 | Other Biomass Gas : 82.6% Distillate Fuel Oil : 13.0% Wind : 2.7% Solar : 1.8% |
| Pittsfield Generating LP | Pittsfield Generating Company, LP | Pittsfield, MA | ISO New England (ISNE) | 113.9 GWh | Jun 1990 | Jun 2026 | Natural Gas : 96.3% Distillate Fuel Oil : 3.7% |
| SEMASS Resource Recovery | SEMASS Partnership | West Wareham, MA | ISO New England (ISNE) | 549.5 GWh | Jun 1988 | Jun 2026 | Non-biogenic Municipal Solid Waste : 54.0% Biogenic Municipal Solid Waste : 44.2% Natural Gas : 1.7% |
| Covanta Haverhill | Ogden Projects Inc-Haverhill | Haverhill, MA | ISO New England (ISNE) | 288.6 GWh | Apr 1989 | Jun 2026 | Non-biogenic Municipal Solid Waste : 52.8% Biogenic Municipal Solid Waste : 43.2% Distillate Fuel Oil : 4.0% |
| Wheelabrator North Andover | Wheelabrator Environmental Systems | North Andover, MA | ISO New England (ISNE) | 241.9 GWh | Apr 1985 | Jun 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) | 288.8 GWh | Aug 1987 | Jun 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) | 180.0 GWh | Jul 1985 | Jun 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) | 58.4 GWh | Jan 1971 | Jun 2026 | Natural Gas |
| Erving Paper Mills | Erving Paper Mills Inc | Erving, MA | ISO New England (ISNE) | 42.1 GWh | Nov 2013 | Jun 2026 | Natural Gas : 98.0% Distillate Fuel Oil : 2.0% |
| Millennium Power | Millennium Power Company, LLC | Charlton, MA | ISO New England (ISNE) | 948.2 GWh | Mar 2001 | Jun 2026 | Natural Gas |
| ANP Bellingham Energy Project | Bellingham Power Generation LLC | Bellingham, MA | ISO New England (ISNE) | 2.9 TWh | Oct 2002 | Jun 2026 | Natural Gas |
| ANP Blackstone Energy Project | ANP Blackstone Energy Company LLC | Blackstone, MA | ISO New England (ISNE) | 2.8 TWh | May 2001 | Jun 2026 | Natural Gas |
| Fore River Generating Station | Calpine Fore River Energy Center, LLC | North Weymouth, MA | ISO New England (ISNE) | 2.7 TWh | Jul 2003 | Jun 2026 | Natural Gas : 92.4% Distillate Fuel Oil : 7.6% |
| New England Wind LLC | Avangrid Power LLC | Florida, MA | ISO New England (ISNE) | 72.9 GWh | Nov 2012 | Jun 2026 | Wind |
| Berkshire Wind Power Project | Massachusetts Mun Wholes Electric Co | Lanesboro, MA | ISO New England (ISNE) | 28.8 GWh | Apr 2011 | Jun 2026 | Wind |
| Mt Wachusett Community College | Mt Wachusett Community College | Gardner, MA | ISO New England (ISNE) | 4.3 GWh | Feb 2011 | Jun 2026 | Wind |
| Cottage Street Solar Facility | Western Massachusetts Electric Company | Springfield, MA | ISO New England (ISNE) | 4.1 GWh | Apr 2014 | Jun 2026 | Solar |
| Cape Cod Air Force Station - 6 SWS | US Space Force | Sagamore, MA | ISO New England (ISNE) | 6.2 GWh | Dec 2013 | Jun 2026 | Wind |
| Dept of Corrections NCCI Wind | Dept of Corrections NCCI Wind | Gardner, MA | ISO New England (ISNE) | 1.8 GWh | Oct 2013 | Jun 2026 | Wind |
| Framingham State University Plant | Framingham State University | Framingham, MA | ISO New England (ISNE) | 45.0 MWh | May 1974 | Jun 2026 | Solar : 60.0% Distillate Fuel Oil : 40.0% |
| Spring Hill Road | AES Distributed Energy | Barre, MA | ISO New England (ISNE) | 285.0 MWh | Nov 2015 | Jun 2026 | Solar |
| Exelon West Medway II LLC | Constellation Power, Inc | Medway, MA | ISO New England (ISNE) | 252.4 GWh | Feb 2019 | Jun 2026 | Natural Gas : 95.1% Kerosene : 4.9% |
| Southbridge Solar | AES Distributed Energy | Southbridge, MA | ISO New England (ISNE) | 1.7 GWh | Feb 2016 | Jun 2026 | Solar |
| Salem Harbor Power Development LP | Salem Harbor Power Development LP | Salem, MA | ISO New England (ISNE) | 1.5 TWh | Apr 2018 | Jun 2026 | Natural Gas |
| Southwick Solar PV | NSTAR Electric Company | Southwick, MA | ISO New England (ISNE) | 8.0 GWh | Dec 2018 | Jun 2026 | Solar |
| Montague Site 36-Grosolar | NSTAR Electric Company | Millers Falls, MA | ISO New England (ISNE) | 5.8 GWh | Sep 2018 | Jun 2026 | Solar |
| Vineyard Wind 1 | Vineyard Wind 1 LLC | Edgartown, MA | ISO New England (ISNE) | 457.7 GWh | - | Jun 2026 | Wind |
| Medway Grid | Medway Grid LLC | Medway, MA | ISO New England (ISNE) | 18.4 GWh | - | Jun 2026 | Electricity used for energy storage |
Browse Power Plants By Massachusetts Counties
Figures are based on June 2026 generation numbers.| County | State Rank | Active Plants | Jun 2026 Generation |
|---|---|---|---|
| Norfolk County, MA | # 1 | 40 | 6.4 TWh |
| Worcester County, MA | # 2 | 200 | 5.1 TWh |
| Essex County, MA | # 3 | 41 | 2.3 TWh |
| Middlesex County, MA | # 4 | 70 | 1.9 TWh |
| Hampden County, MA | # 5 | 90 | 1.9 TWh |
| Plymouth County, MA | # 6 | 86 | 811.3 GWh |
| Bristol County, MA | # 7 | 75 | 645.8 GWh |
| County | State Rank | Active Plants | Jun 2026 Generation |
|---|---|---|---|
| Barnstable County, MA | # 8 | 25 | 610.8 GWh |
| Dukes County, MA | # 9 | 7 | 470.9 GWh |
| Suffolk County, MA | # 10 | 14 | 431.9 GWh |
| Hampshire County, MA | # 11 | 39 | 226.9 GWh |
| Franklin County, MA | # 12 | 33 | 176.1 GWh |
| Berkshire County, MA | # 13 | 46 | 163.5 GWh |