Directory of Power Plants in Massachusetts
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Pepperell Hydro Power Plant | Eagle Creek Renewable Energy, LLC | Pepperell, MA | ISO New England (ISNE) | 2.3 GWh | Dec 1919 | May 2026 | Water |
| Pittsfield Generating LP | Pittsfield Generating Company, LP | Pittsfield, MA | ISO New England (ISNE) | 136.2 GWh | Jun 1990 | May 2026 | Natural Gas : 96.9% Distillate Fuel Oil : 3.1% |
| Plymouth Solar | NSTAR Electric Company | Plymouth, MA | ISO New England (ISNE) | 1.5 GWh | May 2018 | Dec 2025 | Solar |
| Partridge Solar | SoCore Energy LLC | Lanesborough, MA | ISO New England (ISNE) | 8.1 GWh | Aug 2022 | Dec 2025 | Solar |
| Plympton Main Street Solar, LLC | REA Investments, LLC | Plympton, MA | ISO New England (ISNE) | 7.4 GWh | Nov 2023 | Dec 2025 | Solar |
| Plympton Lake Street Solar | REA Investments, LLC | Plympton, MA | ISO New England (ISNE) | 2.0 GWh | Nov 2022 | Dec 2025 | Solar |
| Pulpit Hill | LSE Fornax LLC | Amherst, MA | ISO New England (ISNE) | 7.2 GWh | Jun 2019 | Dec 2025 | Solar |
| Pine Hill Westport | Greenbacker Renewable Energy Corporation | Westport, MA | ISO New England (ISNE) | 2.7 GWh | May 2025 | Dec 2025 | Solar |
| Palombo B Solar, LLC CSG | 38 Degrees North, LLC | Uxbridge, MA | ISO New England (ISNE) | 1.6 GWh | Nov 2017 | Dec 2025 | Solar |
| Palombo Solar, LLC CSG | 38 Degrees North, LLC | Uxbridge, MA | ISO New England (ISNE) | 3.4 GWh | Nov 2017 | Dec 2025 | Solar |
| Partridge Hill Solar Hybrid | AES Distributed Energy | Charlton, MA | ISO New England (ISNE) | 2.9 GWh | Jun 2020 | Dec 2025 | Solar |
| Plainfield Community Solar LLC | Plainfield Solar LLC | Plainfield, MA | ISO New England (ISNE) | 3.3 GWh | Jan 2019 | Dec 2025 | Solar |
| Putts Bridge | Central Rivers Power MA, LLC | Ludlow, MA | ISO New England (ISNE) | 10.6 GWh | Dec 1917 | Dec 2025 | Water |
| Pittsfield 44 - M&W PV | NSTAR Electric Company | Pittsfield, MA | ISO New England (ISNE) | 1.5 GWh | Jul 2018 | Dec 2025 | Solar |
| Palmer | AES Distributed Energy | Palmer, MA | ISO New England (ISNE) | 5.7 GWh | Sep 2019 | Dec 2025 | Solar |
| Peterson Road Solar | Peterson Road Solar, LLC | Palmer, MA | ISO New England (ISNE) | 4.3 GWh | Mar 2017 | Dec 2025 | Solar |
| Pleasantdale Road Community Solar | Pleasantdale Road Solar, LLC | Rutland, MA | ISO New England (ISNE) | 1.3 GWh | Aug 2017 | Dec 2025 | Solar |
| Palmer Landfill | Syncarpha Bondsville, LLC | Palmer, MA | ISO New England (ISNE) | 6.0 GWh | Nov 2016 | Dec 2025 | Solar |
| Plymouth Site 1 | CleanCapital Holdings | Plympton, MA | ISO New England (ISNE) | 7.5 GWh | Sep 2013 | Dec 2025 | Solar |
| Padelford Solar | RWE Clean Energy | Berkley, MA | ISO New England (ISNE) | 3.5 GWh | Nov 2012 | Dec 2025 | Solar |
| Princeton Wind Farm | Town of Princeton - (MA) | Princeton, MA | ISO New England (ISNE) | 4.0 GWh | Dec 2009 | Dec 2025 | Wind |
| Potter Station 2 | Town of Braintree - (MA) | Braintree, MA | ISO New England (ISNE) | 41.0 GWh | Jun 1963 | Dec 2025 | Natural Gas : 61.2% Distillate Fuel Oil : 38.8% |
| Partridgeville Hybrid CSG | Partridgeville Road Solar 1, LLC | Athol, MA | ISO New England (ISNE) | 5.7 GWh | Dec 2019 | 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 |
Browse Power Plants By Massachusetts Counties
Figures are based on May 2026 generation numbers.| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Franklin County, MA | # 13 | 33 | 182.1 GWh |
| Berkshire County, MA | # 12 | 46 | 198.8 GWh |
| Hampshire County, MA | # 11 | 39 | 226.9 GWh |
| Dukes County, MA | # 10 | 7 | 376.1 GWh |
| Suffolk County, MA | # 9 | 14 | 428.0 GWh |
| Barnstable County, MA | # 8 | 25 | 628.3 GWh |
| Bristol County, MA | # 7 | 74 | 645.8 GWh |
| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Plymouth County, MA | # 6 | 84 | 814.7 GWh |
| Hampden County, MA | # 5 | 89 | 1.9 TWh |
| Middlesex County, MA | # 4 | 68 | 1.9 TWh |
| Essex County, MA | # 3 | 41 | 2.5 TWh |
| Worcester County, MA | # 2 | 197 | 5.4 TWh |
| Norfolk County, MA | # 1 | 40 | 6.7 TWh |