Directory of Power Plants in Massachusetts
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Antanavica Solar | SunStrong Management, LLC | Leicester, MA | ISO New England (ISNE) | 1.3 GWh | Jul 2018 | 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 |
| Braintree Landfill Solar | Ameresco, Inc - Braintree | Braintree, MA | ISO New England (ISNE) | 1.3 GWh | Nov 2014 | Dec 2025 | Solar |
| Southbridge Solar | AES Distributed Energy | Southbridge, MA | ISO New England (ISNE) | 1.3 GWh | Feb 2016 | Aug 2026 | Solar |
| Town of East Bridgewater CSG | Tesla Inc. | East Bridgewater, MA | ISO New England (ISNE) | 1.3 GWh | May 2013 | Dec 2025 | Solar |
| Sutton Solar 2, LLC CSG | Sutton Solar 2, LLC | Sutton, MA | ISO New England (ISNE) | 1.3 GWh | Nov 2020 | Dec 2025 | Solar |
| Sudbury Landfill | Heliovaas LLC | Sudbury, MA | ISO New England (ISNE) | 1.3 GWh | Nov 2013 | Dec 2025 | Solar |
| Webster Solar | Webster Solar, LLC | Webster, MA | ISO New England (ISNE) | 1.2 GWh | Nov 2017 | Dec 2025 | Solar |
| Maynard PV | Terraform Arcadia | Maynard, MA | ISO New England (ISNE) | 1.2 GWh | Dec 2013 | Dec 2025 | Solar |
| Front Street | City of Chicopee - (MA) | Chicopee, MA | ISO New England (ISNE) | 1.2 GWh | Dec 1977 | Dec 2025 | Distillate Fuel Oil |
| Dudley Landfill Solar LLC | Dudley Landfill Solar LLC | Dudley, MA | ISO New England (ISNE) | 1.2 GWh | Apr 2025 | Dec 2025 | Solar |
| Wendell MA 1 | Wendell MA 1 LLC | Wendell, MA | ISO New England (ISNE) | 1.2 GWh | Nov 2018 | Dec 2025 | Solar |
| MA Solar Storage 1 Hybrid | Origis Energy USA, Inc | Sterling, MA | ISO New England (ISNE) | 1.2 GWh | Feb 2018 | Dec 2025 | Solar |
| Exelon Framingham LLC | Constellation Power, Inc | Framingham, MA | ISO New England (ISNE) | 1.2 GWh | Aug 1969 | Dec 2025 | Distillate Fuel Oil |
| 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 |
| Bridgewater Complex Co-Generation Plant | Massachusetts Department of Correction | Bridgewater, MA | ISO New England (ISNE) | 1.2 GWh | Oct 2015 | Dec 2025 | Natural Gas |
| Haverhill Solar Power Project | Massachusetts Electric Co | Haverhill, MA | ISO New England (ISNE) | 1.2 GWh | Nov 2010 | Dec 2025 | Solar |
| Lowell Solar Landfill | Heliovaas LLC | Lowell, MA | ISO New England (ISNE) | 1.2 GWh | Nov 2013 | Dec 2025 | Solar |
| Norton LLC | Greenbacker Renewable Energy Corporation | Norton, MA | ISO New England (ISNE) | 1.1 GWh | Aug 2020 | Dec 2025 | Solar |
| CVEC Round 4 Brewster Captn Golf Course | Freemans Way Solar Project 2019, LLC | Brewster, MA | ISO New England (ISNE) | 1.1 GWh | Feb 2022 | Dec 2025 | Solar |
| Wareham Solar PV | NSTAR Electric Company | Wareham, MA | ISO New England (ISNE) | 1.1 GWh | Nov 2018 | Dec 2025 | Solar |
| UMass Boston | MSS Energy Holdings, LLC (d.b.a. Calibrant Energy) | Dorchester, MA | ISO New England (ISNE) | 1.0 GWh | Dec 1971 | Dec 2025 | Solar |
| Acushnet MA 2 (CSG) | Navisun LLC | Acushnet, MA | ISO New England (ISNE) | 1.0 GWh | Feb 2024 | Dec 2025 | Solar |
| Acushnet MA 1 | Navisun LLC | Acushnet, MA | ISO New England (ISNE) | 1.0 GWh | Nov 2023 | Dec 2025 | Solar |
| Williamsburg Solar LLC VNEM CSG | Tesla Inc. | Haydenville, MA | ISO New England (ISNE) | 1.0 GWh | Jan 2016 | Dec 2025 | Solar |
| TJA MA Wakeby Road | Standard Solar | Barnstable, MA | ISO New England (ISNE) | 1.0 GWh | Aug 2025 | Dec 2025 | Solar |
| NEDC Solar Site | Massachusetts Electric Co | Whitinsville, MA | ISO New England (ISNE) | 953.0 MWh | May 2010 | Dec 2025 | Solar |
| 401 South | Madison Energy Investments LLC | Dalton, MA | Southern Company Services, Inc. - Trans (SOCO) | 945.0 MWh | Nov 2023 | Dec 2025 | Solar |
| Cedarville CSG | Altus Power America Management, LLC | Plymouth, MA | ISO New England (ISNE) | 914.0 MWh | Jun 2017 | Dec 2025 | Solar |
| Wilson Solar (MA) | RWE Clean Energy | Spencer, MA | ISO New England (ISNE) | 870.0 MWh | May 2013 | Dec 2025 | Solar |
| 118 Echo | Madison Energy Investments LLC | Mashpee, MA | ISO New England (ISNE) | 814.0 MWh | Jun 2023 | Dec 2025 | Solar |
| ZPD-PT Solar Project 2017-044 LLC CSG | AES Distributed Energy | Spencer, MA | ISO New England (ISNE) | 812.0 MWh | Sep 2021 | Dec 2025 | Solar |
| Cosgrove Intake and Power Station | Massachusetts Water Res Auth | Clinton, MA | ISO New England (ISNE) | 646.0 MWh | Dec 1968 | Jan 2025 | Water |
| 1 Commercial | Madison Energy Investments LLC | Sharon, MA | ISO New England (ISNE) | 622.0 MWh | Aug 2023 | Oct 2025 | Solar |
| Spencer Solar CSG | Madison Energy Investments LLC | Spencer, MA | ISO New England (ISNE) | 584.0 MWh | May 2025 | Dec 2025 | Solar |
| Acton Solar Landfill | Heliovaas LLC | Acton, MA | ISO New England (ISNE) | 475.0 MWh | Nov 2013 | Dec 2025 | Solar |
| West Boylston Community Shared Solar | Town of West Boylston - (MA) | West Boylston, MA | ISO New England (ISNE) | 447.0 MWh | Nov 2016 | Dec 2025 | Solar |
| Centech Gas Generator | Town of Shrewsbury - (MA) | Shrewsbury, MA | ISO New England (ISNE) | 428.0 MWh | Mar 2019 | Dec 2025 | Natural Gas |
| Cherry Street | Town of Hudson - (MA) | Hudson, MA | ISO New England (ISNE) | 320.0 MWh | Apr 1951 | Dec 2025 | Distillate Fuel Oil : 58.5% Natural Gas : 41.5% |
| GSPP Worcester Business Center, LLC | Green Street Power Partners | Worcester, MA | ISO New England (ISNE) | 300.0 MWh | Jul 2025 | Dec 2025 | Solar |
| M Street Jet | Massachusetts Bay Trans Auth | Boston, MA | ISO New England (ISNE) | 294.0 MWh | Apr 1979 | Dec 2025 | Kerosene |
| Spring Hill Road | AES Distributed Energy | Barre, MA | ISO New England (ISNE) | 286.0 MWh | Nov 2015 | Aug 2026 | Solar |
| BJ's Wholesale Club, Inc- Uxbridge | Tesla Inc. | Uxbridge, MA | ISO New England (ISNE) | 270.0 MWh | Jun 2017 | Dec 2024 | Solar |
| High Street Station | Town of Ipswich - (MA) | Ipswich, MA | ISO New England (ISNE) | 153.0 MWh | May 1937 | Dec 2025 | Natural Gas : 92.3% Distillate Fuel Oil : 7.7% |
| Lee Site 31 Solar | NSTAR Electric Company | Lee, MA | ISO New England (ISNE) | 149.0 MWh | Jul 2018 | Dec 2025 | Solar |
| 20 Bedford | Madison Energy Investments LLC | Bridgewater, MA | ISO New England (ISNE) | 146.0 MWh | Nov 2024 | Dec 2025 | Solar |
| 665 Scenic Highway | Madison Energy Investments LLC | Bourne, MA | ISO New England (ISNE) | 89.0 MWh | Nov 2022 | Dec 2025 | Solar |
| 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% |
| Oak Leaf Solar XVII Community Solar | Navisun LLC | Pittsfield, MA | ISO New England (ISNE) | 47.0 MWh | Nov 2025 | Dec 2025 | Solar |
| Wilkins Station | Town of Marblehead - (MA) | Marblehead, MA | ISO New England (ISNE) | 32.0 MWh | Oct 1975 | Dec 2025 | Distillate Fuel Oil |
| 376 Nash | Madison Energy Investments LLC | New Bedford, MA | ISO New England (ISNE) | 17.0 MWh | Nov 2024 | Dec 2025 | Solar |
| Oak Leaf Solar XVI Community Solar | Navisun LLC | Pittsfield, MA | ISO New England (ISNE) | 10.0 MWh | Nov 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 |
| Jiminy Peak Wind QF | Jiminy Peak Mountain Resort, LLC | Hancock, MA | ISO New England (ISNE) | 2.0 MWh | Jul 2007 | Apr 2025 | 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 |