Directory of Power Plants in Massachusetts
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Westborough Solar LLC | SunRay Power LLC | Westborough, MA | ISO New England (ISNE) | 2.2 GWh | Mar 2014 | Dec 2025 | Solar |
| True North | CD US Solar MT1 LLC | Salisbury, MA | ISO New England (ISNE) | 6.0 GWh | Jul 2012 | Dec 2025 | Solar |
| Grafton Solar | CD US Solar MT 2 LLC | Grafton, MA | ISO New England (ISNE) | 2.0 GWh | Sep 2013 | Dec 2025 | Solar |
| Shaffer | CD US Solar MT3, LLC | Billerica, MA | ISO New England (ISNE) | 6.4 GWh | Aug 2014 | Dec 2025 | Solar |
| 205 Sturbridge A | Altus Power America Management, LLC | Brimfield, MA | ISO New England (ISNE) | 3.8 GWh | May 2014 | Dec 2025 | Solar |
| Monson Solar | Altus Power America Management, LLC | Monson, MA | ISO New England (ISNE) | 3.8 GWh | Jun 2014 | Dec 2025 | Solar |
| Sullivan Solar | Altus Power America Management, LLC | New Bedford, MA | ISO New England (ISNE) | 2.1 GWh | Jul 2014 | Dec 2025 | Solar |
| Winchendon Solar | Altus Power America Management, LLC | Winchendon, MA | ISO New England (ISNE) | 2.7 GWh | Mar 2014 | Dec 2025 | Solar |
| KS Solar Six LLC | Kearsarge Solar LLC | Hubbardston, MA | ISO New England (ISNE) | 2.8 GWh | Nov 2013 | Dec 2025 | Solar |
| Hadley Solar NG, LLC | NuGen Capital Management | Hadley, MA | ISO New England (ISNE) | 3.2 GWh | Jun 2014 | Dec 2025 | Solar |
| 265 Pleasant Solar NG, LLC | NuGen Capital Management | Lunenburg, MA | ISO New England (ISNE) | 1.3 GWh | Jun 2014 | Dec 2025 | Solar |
| Acton Solar Landfill | Heliovaas LLC | Acton, MA | ISO New England (ISNE) | 475.0 MWh | Nov 2013 | Dec 2025 | Solar |
| Tisbury Landfill Solar | Clean Focus Yield, LLC | Tisbury, MA | ISO New England (ISNE) | 1.5 GWh | Jun 2014 | Dec 2025 | Solar |
| Future Generation Wind | RWE Clean Energy | Plymouth, MA | ISO New England (ISNE) | 12.2 GWh | Jul 2016 | Nov 2025 | Wind |
| Rail Trail | Altus Power America Management, LLC | Great Barrington, MA | ISO New England (ISNE) | 3.1 GWh | Apr 2016 | Dec 2025 | Solar |
| Southbridge Solar | AES Distributed Energy | Southbridge, MA | ISO New England (ISNE) | 1.3 GWh | Feb 2016 | Aug 2026 | Solar |
| SJA Solar LLC-Solterra Monastery CSG | SJA Solar, LLC | Spencer, MA | ISO New England (ISNE) | 23.6 GWh | Nov 2016 | Dec 2025 | Solar |
| Fairhaven C CSG | MN8 Energy LLC | Fairhaven, MA | ISO New England (ISNE) | 2.2 GWh | Apr 2017 | Dec 2025 | Solar |
| West Bridgewater AB CSG | MN8 Energy LLC | West Bridgewater, MA | ISO New England (ISNE) | 2.5 GWh | May 2017 | Dec 2025 | Solar |
| Carver MA 1 Community Solar | Navisun LLC | Carver, MA | ISO New England (ISNE) | 3.1 GWh | Aug 2016 | Dec 2025 | Solar |
| Wareham MA 1 Community Solar | Navisun LLC | Wareham, MA | ISO New England (ISNE) | 2.8 GWh | Aug 2016 | Dec 2025 | Solar |
| Hardwick-Athol & Eagle Hill | Madison Energy Investments LLC | Hardwick, MA | ISO New England (ISNE) | 1.8 GWh | Jun 2015 | Sep 2025 | Solar |
| Westport MA 1 Community Solar | Navisun LLC | Westport, MA | ISO New England (ISNE) | 2.1 GWh | Aug 2016 | Dec 2025 | Solar |
| Westport MA 2 Community Solar | Navisun LLC | Westport, MA | ISO New England (ISNE) | 1.5 GWh | Aug 2016 | Dec 2025 | Solar |
| West Groton CHP | Hollingsworth & Vose Co West Groton | Groton, MA | ISO New England (ISNE) | 20.9 GWh | Nov 2015 | Dec 2025 | Natural Gas |
| Rising Paper | Altus Power America Management, LLC | Great Barrington, MA | ISO New England (ISNE) | 3.4 GWh | Apr 2016 | Dec 2025 | Solar |
| Hampden | Altus Power America Management, LLC | Hampden, MA | ISO New England (ISNE) | 4.9 GWh | Jun 2015 | Dec 2025 | Solar |
| Shirley Water | Altus Power America Management, LLC | Shirley, MA | ISO New England (ISNE) | 2.8 GWh | Jul 2016 | Dec 2025 | Solar |
| Morin Solar 2013 LLC | CVI CleanCapital Solar 6 | Warren, MA | ISO New England (ISNE) | 5.1 GWh | Nov 2013 | Dec 2025 | Solar |
| Brookfield Solar 2013 LLC | CVI CleanCapital Solar 6 | North Brookfield, MA | ISO New England (ISNE) | 2.6 GWh | Nov 2013 | Dec 2025 | Solar |
| WYM 1250 Palmer LLC | CVI CleanCapital Solar 6 | Palmer, MA | ISO New England (ISNE) | 1.5 GWh | Aug 2013 | Dec 2025 | Solar |
| Southern Sky Renew Energy Berkley LLC | Southern Sky Renewable Energy Berkley, LLC | Berkley, MA | ISO New England (ISNE) | 4.2 GWh | May 2014 | Dec 2025 | Solar |
| Worcester Landfill | City of Worcester DPW - (MA) | Worcester, MA | ISO New England (ISNE) | 7.9 GWh | Apr 2017 | Dec 2025 | Solar |
| Renew Canal 1 CSG LLC | NRG Renew Canal 1 LLC | Sandwich, MA | ISO New England (ISNE) | 1.9 GWh | May 2017 | Dec 2025 | Solar |
| BWC Swan Pond River CSG | BWC Swan Pond River, LLC | Rehoboth, MA | ISO New England (ISNE) | 3.0 GWh | Nov 2015 | Dec 2025 | Solar |
| 201 Sturbridge B | Altus Power America Management, LLC | Brimfield, MA | ISO New England (ISNE) | 2.5 GWh | May 2014 | Dec 2025 | Solar |
| Spring Hill Road | AES Distributed Energy | Barre, MA | ISO New England (ISNE) | 286.0 MWh | Nov 2015 | Aug 2026 | Solar |
| Lowell Solar Landfill | Heliovaas LLC | Lowell, MA | ISO New England (ISNE) | 1.2 GWh | Nov 2013 | Dec 2025 | 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% |
| Hunt Road Solar | Citizens Enterprises Corporation | Amesbury, MA | ISO New England (ISNE) | 7.0 GWh | Nov 2016 | Dec 2025 | Solar |
| Mashpee Landfill Solar | Nautilus Solar Solutions | Mashpee, MA | ISO New England (ISNE) | 2.0 GWh | Aug 2014 | Dec 2025 | Solar |
| Oxford | CVI CleanCapital Solar 6 | Oxford, MA | ISO New England (ISNE) | 3.1 GWh | Jun 2014 | Dec 2025 | Solar |
| Syncarpha Palmer, LLC | Syncarpha Palmer, LLC | Palmer, MA | ISO New England (ISNE) | 7.2 GWh | Nov 2015 | Dec 2025 | Solar |
| Federal Road Solar 1, LLC CSG | Federal Road Solar 1, LLC | South Carver, MA | ISO New England (ISNE) | 8.3 GWh | Nov 2015 | 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 |
| Leominster | Syncarpha Massachusetts, LLC | Leominster, MA | ISO New England (ISNE) | 2.6 GWh | Apr 2015 | Dec 2025 | Solar |
| North Adams Landfill | Syncarpha North Adams, LLC | North Adams, MA | ISO New England (ISNE) | 3.3 GWh | Sep 2015 | Dec 2025 | Solar |
| Fisher Road Solar | Fisher Road Solar I, LLC | Dartmouth, MA | ISO New England (ISNE) | 7.1 GWh | Apr 2015 | Dec 2025 | Solar |
| Palmer Landfill | Syncarpha Bondsville, LLC | Palmer, MA | ISO New England (ISNE) | 6.0 GWh | Nov 2016 | Dec 2025 | Solar |
| Hewlett-Packard (HP) - Andover, MA | Tesla Inc. | Andover, MA | ISO New England (ISNE) | 2.3 GWh | May 2017 | Dec 2025 | Solar |
| Town of Needham VNEM CSG | Tesla Inc. | Needham, MA | ISO New England (ISNE) | 4.1 GWh | Jan 2016 | Dec 2025 | Solar |
| Williamsburg Solar LLC VNEM CSG | Tesla Inc. | Haydenville, MA | ISO New England (ISNE) | 1.0 GWh | Jan 2016 | Dec 2025 | Solar |
| BJ's Wholesale Club, Inc- Uxbridge | Tesla Inc. | Uxbridge, MA | ISO New England (ISNE) | 270.0 MWh | Jun 2017 | Dec 2024 | Solar |
| CED Westfield Solar, LLC | RWE Clean Energy | Westfield, MA | ISO New England (ISNE) | 2.7 GWh | Jul 2016 | Dec 2025 | Solar |
Browse Power Plants By Massachusetts Counties
Figures are based on August 2026 generation numbers.| County | State Rank | Active Plants | Aug 2026 Generation |
|---|---|---|---|
| Berkshire County, MA | # 13 | 46 | 85.8 GWh |
| Franklin County, MA | # 12 | 33 | 172.4 GWh |
| Hampshire County, MA | # 11 | 39 | 226.3 GWh |
| Suffolk County, MA | # 10 | 14 | 427.6 GWh |
| Barnstable County, MA | # 9 | 25 | 531.6 GWh |
| Bristol County, MA | # 8 | 75 | 645.7 GWh |
| Plymouth County, MA | # 7 | 86 | 797.7 GWh |
| County | State Rank | Active Plants | Aug 2026 Generation |
|---|---|---|---|
| Dukes County, MA | # 6 | 7 | 879.6 GWh |
| Hampden County, MA | # 5 | 90 | 1.9 TWh |
| Middlesex County, MA | # 4 | 70 | 1.9 TWh |
| Essex County, MA | # 3 | 41 | 2.1 TWh |
| Worcester County, MA | # 2 | 200 | 4.9 TWh |
| Norfolk County, MA | # 1 | 40 | 5.9 TWh |