Directory of Power Plants in Massachusetts
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Ward Solar 1, LLC | REA Investments, LLC | Carver, MA | ISO New England (ISNE) | 3.4 GWh | Jan 2019 | Dec 2025 | Solar |
| Old Frontier Solar III | Old Frontier Solar III PV, LLC | South Deerfield, MA | ISO New England (ISNE) | 3.8 GWh | Aug 2022 | Dec 2025 | Solar |
| 118 Echo | Madison Energy Investments LLC | Mashpee, MA | ISO New England (ISNE) | 814.0 MWh | Jun 2023 | Dec 2025 | Solar |
| 515 Main Saugus | 515 Main Saugus LLC | Saugus, MA | ISO New England (ISNE) | 1.9 GWh | Aug 2017 | Dec 2025 | Solar |
| Aegean Drive Solar | Aegean Drive Solar LLC | Methuen, MA | ISO New England (ISNE) | 2.4 GWh | Aug 2021 | Dec 2025 | Solar |
| Downing Parkway Solar | Downing Parkway Solar LLC | Pittsfield, MA | ISO New England (ISNE) | 3.2 GWh | Jun 2015 | Dec 2025 | Solar |
| Millbury MA #1092 | Millbury MA #1092 LLC | Millbury, MA | ISO New England (ISNE) | 1.6 GWh | May 2019 | Dec 2025 | Solar |
| Millis MA 1 | Millis MA 1 LLC | Millis, MA | ISO New England (ISNE) | 1.5 GWh | Oct 2018 | Dec 2025 | Solar |
| Rochester MA 2 | Rochester MA 2 LLC | Rochester, MA | ISO New England (ISNE) | 1.4 GWh | Nov 2018 | Dec 2025 | Solar |
| Wendell MA 1 | Wendell MA 1 LLC | Wendell, MA | ISO New England (ISNE) | 1.2 GWh | Nov 2018 | Dec 2025 | Solar |
| Central Heating Plant | University of Massachusetts Amherst | Amherst, MA | ISO New England (ISNE) | 79.6 GWh | Sep 2007 | Dec 2025 | Natural Gas : 96.3% Distillate Fuel Oil : 3.7% |
| Overlook | Westbound Solar 3, LLC | Westminster, MA | ISO New England (ISNE) | 6.8 GWh | Feb 2023 | Dec 2025 | Solar |
| New Marlborough | Sunrise on Knight Rd. LLC | New Marlborough, MA | ISO New England (ISNE) | 6.9 GWh | May 2021 | Dec 2025 | Solar |
| Peru (MA) | Sunrise on West Main Rd. LLC | Peru, MA | ISO New England (ISNE) | 4.5 GWh | Oct 2020 | Dec 2025 | Solar |
| Russell (MA) | Sunrise on Blandford Rd. LLC | Russell, MA | ISO New England (ISNE) | 4.9 GWh | Oct 2020 | Dec 2025 | Solar |
| Tolland | Sunrise on Clubhouse Rd. LLC | Tolland, MA | ISO New England (ISNE) | 7.6 GWh | Nov 2020 | Dec 2025 | Solar |
| Westhampton | Sunrise on Montague Rd. LLC | Westhampton, MA | ISO New England (ISNE) | 6.8 GWh | Nov 2020 | Dec 2025 | Solar |
| Westport (MA) | Sunrise on Drift Rd. LLC | Westport, MA | ISO New England (ISNE) | 3.5 GWh | Sep 2020 | Dec 2025 | Solar |
| Partridge Solar | SoCore Energy LLC | Lanesborough, MA | ISO New England (ISNE) | 8.1 GWh | Aug 2022 | Dec 2025 | Solar |
| Saddleback Solar | SoCore Energy LLC | Lanesborough, MA | ISO New England (ISNE) | 4.5 GWh | Aug 2022 | Dec 2025 | Solar |
| Skyline Solar | SoCore Energy LLC | Lanesborough, MA | ISO New England (ISNE) | 8.2 GWh | Aug 2022 | Dec 2025 | Solar |
| Adams Grove Solar | SoCore Energy LLC | Adams, MA | ISO New England (ISNE) | 6.0 GWh | Aug 2022 | Dec 2025 | Solar |
| Apollo | Sunrise on Wing Ln. LLC | Acushnet, MA | ISO New England (ISNE) | 2.5 GWh | Aug 2021 | Dec 2025 | Solar |
| Marston Mills Solar | SoCore Energy LLC | Marstons Mills, MA | ISO New England (ISNE) | 6.3 GWh | Nov 2021 | Dec 2025 | Solar |
| 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 |
| TJA MA Wakeby Road | Standard Solar | Barnstable, MA | ISO New England (ISNE) | 1.0 GWh | Aug 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 |
| Sheffield Hewins | Navisun LLC | Sheffield, MA | ISO New England (ISNE) | 2.0 GWh | Nov 2022 | Dec 2025 | Solar |
| GSPP Worcester Business Center, LLC | Green Street Power Partners | Worcester, MA | ISO New England (ISNE) | 300.0 MWh | Jul 2025 | Dec 2025 | Solar |
| Waters River | City of Peabody - (MA) | Peabody, MA | ISO New England (ISNE) | 5.5 GWh | Nov 1971 | Nov 2025 | Natural Gas : 71.3% Distillate Fuel Oil : 28.7% |
| Future Generation Wind | RWE Clean Energy | Plymouth, MA | ISO New England (ISNE) | 12.2 GWh | Jul 2016 | Nov 2025 | Wind |
| Lilly Lane | LSE Chamaeleon LLC | Charlton, MA | ISO New England (ISNE) | 1.5 GWh | May 2018 | Oct 2025 | Solar |
| 1 Commercial | Madison Energy Investments LLC | Sharon, MA | ISO New England (ISNE) | 622.0 MWh | Aug 2023 | Oct 2025 | Solar |
| Oak Bluffs Diesel Generating Facility | Vineyard Reliability LLC | Oak Bluffs, MA | ISO New England (ISNE) | 2.9 GWh | Dec 1968 | Sep 2025 | Distillate Fuel Oil |
| West Tisbury Generating Facility | Vineyard Reliability LLC | West Tisbury, MA | ISO New England (ISNE) | 5.4 GWh | Dec 1974 | Sep 2025 | Distillate Fuel Oil |
| Hardwick-Athol & Eagle Hill | Madison Energy Investments LLC | Hardwick, MA | ISO New England (ISNE) | 1.8 GWh | Jun 2015 | Sep 2025 | Solar |
| ENGIE 2019 ProjectCo-MA1, LLC | ENGIE 2019 ProjectCo MA-1, LLC | Agawam, MA | ISO New England (ISNE) | 5.1 GWh | Feb 2021 | Jul 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 |
| Twiss Street Solar | Citizens Enterprises Corporation | Westfield, MA | ISO New England (ISNE) | 1.9 GWh | Dec 2014 | Mar 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 |
| BJ's Wholesale Club, Inc- Uxbridge | Tesla Inc. | Uxbridge, MA | ISO New England (ISNE) | 270.0 MWh | Jun 2017 | Dec 2024 | Solar |
| Natick Mall | Natick Mall | Natick, MA | ISO New England (ISNE) | 3.6 GWh | Dec 2014 | Dec 2024 | 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 |