Directory of Power Plants in Massachusetts
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Millis MA 1 | Millis MA 1 LLC | Millis, MA | ISO New England (ISNE) | 1.6 GWh | Oct 2018 | Dec 2024 | Solar |
| Rochester MA 2 | Rochester MA 2 LLC | Rochester, MA | ISO New England (ISNE) | 1.5 GWh | Nov 2018 | Dec 2024 | Solar |
| Wendell MA 1 | Wendell MA 1 LLC | Wendell, MA | ISO New England (ISNE) | 1.4 GWh | Nov 2018 | Dec 2024 | Solar |
| Central Heating Plant | University of Massachusetts Amherst | Amherst, MA | ISO New England (ISNE) | 104.0 GWh | Sep 2007 | Dec 2024 | Natural Gas : 98.5% Distillate Fuel Oil : 1.5% |
| Overlook | Westbound Solar 3, LLC | Westminster, MA | ISO New England (ISNE) | 6.9 GWh | Feb 2023 | Dec 2024 | Solar |
| New Marlborough | Sunrise on Knight Rd. LLC | New Marlborough, MA | ISO New England (ISNE) | 7.4 GWh | May 2021 | Dec 2024 | Solar |
| Peru (MA) | Sunrise on West Main Rd. LLC | Peru, MA | ISO New England (ISNE) | 5.2 GWh | Oct 2020 | Dec 2024 | Solar |
| Russell (MA) | Sunrise on Blandford Rd. LLC | Russell, MA | ISO New England (ISNE) | 5.0 GWh | Oct 2020 | Dec 2024 | Solar |
| Tolland | Sunrise on Clubhouse Rd. LLC | Tolland, MA | ISO New England (ISNE) | 8.3 GWh | Nov 2020 | Dec 2024 | Solar |
| Westhampton | Sunrise on Montague Rd. LLC | Westhampton, MA | ISO New England (ISNE) | 7.4 GWh | Nov 2020 | Dec 2024 | Solar |
| Westport (MA) | Sunrise on Drift Rd. LLC | Westport, MA | ISO New England (ISNE) | 4.0 GWh | Sep 2020 | Dec 2024 | Solar |
| Partridge Solar | SoCore Energy LLC | Lanesborough, MA | ISO New England (ISNE) | 8.0 GWh | Aug 2022 | Dec 2024 | Solar |
| Saddleback Solar | SoCore Energy LLC | Lanesborough, MA | ISO New England (ISNE) | 3.5 GWh | Aug 2022 | Dec 2024 | Solar |
| Skyline Solar | SoCore Energy LLC | Lanesborough, MA | ISO New England (ISNE) | 7.2 GWh | Aug 2022 | Dec 2024 | Solar |
| Adams Grove Solar | SoCore Energy LLC | Adams, MA | ISO New England (ISNE) | 6.2 GWh | Aug 2022 | Dec 2024 | Solar |
| Apollo | Sunrise on Wing Ln. LLC | Acushnet, MA | ISO New England (ISNE) | 2.1 GWh | Aug 2021 | Dec 2024 | Solar |
| Marston Mills Solar | SoCore Energy LLC | Marstons Mills, MA | ISO New England (ISNE) | 5.7 GWh | Nov 2021 | Dec 2024 | Solar |
| Waters River | City of Peabody - (MA) | Peabody, MA | ISO New England (ISNE) | 4.8 GWh | Nov 1971 | Nov 2024 | Natural Gas : 78.8% Distillate Fuel Oil : 21.2% |
| Acton Solar Landfill | Heliovaas LLC | Acton, MA | ISO New England (ISNE) | 1.9 GWh | Nov 2013 | Nov 2024 | Solar |
| East Brookfield Main Street Solar LLC CS | AES Distributed Energy | East Brookfield, MA | ISO New England (ISNE) | 1.6 GWh | Nov 2020 | Nov 2024 | Solar |
| Charlemont A | Charlemont MA, LLC | Charlemont, MA | ISO New England (ISNE) | 3.6 GWh | Aug 2021 | Nov 2024 | Solar |
| Fife Brook | Bear Swamp Power Company LLC | Florida, MA | ISO New England (ISNE) | 29.5 GWh | Sep 1974 | Oct 2024 | Water |
| Ventura | Ventura Drive Dartmouth Solar 1, LLC | Dartmouth, MA | ISO New England (ISNE) | 1.8 GWh | May 2022 | Oct 2024 | Solar |
Browse Power Plants By Massachusetts Counties
Figures are based on March 2026 generation numbers.| County | State Rank | Active Plants | Mar 2026 Generation |
|---|---|---|---|
| Dukes County, MA | # 13 | 7 | 144.1 GWh |
| Berkshire County, MA | # 12 | 44 | 246.9 GWh |
| Hampshire County, MA | # 11 | 37 | 270.0 GWh |
| Franklin County, MA | # 10 | 33 | 280.2 GWh |
| Suffolk County, MA | # 9 | 13 | 429.1 GWh |
| Barnstable County, MA | # 8 | 23 | 624.8 GWh |
| Plymouth County, MA | # 7 | 84 | 823.6 GWh |
| County | State Rank | Active Plants | Mar 2026 Generation |
|---|---|---|---|
| Bristol County, MA | # 6 | 71 | 943.8 GWh |
| Hampden County, MA | # 5 | 86 | 1.8 TWh |
| Middlesex County, MA | # 4 | 68 | 1.9 TWh |
| Essex County, MA | # 3 | 39 | 2.5 TWh |
| Worcester County, MA | # 2 | 190 | 5.7 TWh |
| Norfolk County, MA | # 1 | 39 | 7.0 TWh |