Directory of Power Plants in Massachusetts
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Wheelabrator North Andover | Wheelabrator Environmental Systems | North Andover, MA | ISO New England (ISNE) | 236.2 GWh | Apr 1985 | Mar 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wheelabrator Millbury Facility | Wheelabrator Environmental Systems | Millbury, MA | ISO New England (ISNE) | 319.4 GWh | Aug 1987 | Mar 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wheelabrator Saugus | Wheelabrator Environmental Systems | Saugus, MA | ISO New England (ISNE) | 183.1 GWh | Jul 1985 | Mar 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Gillette SBMC | The Gillette Company | Boston, MA | ISO New England (ISNE) | 54.2 GWh | Jan 1971 | Mar 2026 | Natural Gas |
| Erving Paper Mills | Erving Paper Mills Inc | Erving, MA | ISO New England (ISNE) | 41.6 GWh | Nov 2013 | Mar 2026 | Natural Gas : 98.0% Distillate Fuel Oil : 2.0% |
| Millennium Power | Millennium Power Company, LLC | Charlton, MA | ISO New England (ISNE) | 970.2 GWh | Mar 2001 | Mar 2026 | Natural Gas |
| ANP Bellingham Energy Project | Bellingham Power Generation LLC | Bellingham, MA | ISO New England (ISNE) | 3.3 TWh | Oct 2002 | Mar 2026 | Natural Gas |
| ANP Blackstone Energy Project | ANP Blackstone Energy Company LLC | Blackstone, MA | ISO New England (ISNE) | 3.2 TWh | May 2001 | Mar 2026 | Natural Gas |
| Fore River Generating Station | Calpine Fore River Energy Center, LLC | North Weymouth, MA | ISO New England (ISNE) | 3.0 TWh | Jul 2003 | Mar 2026 | Natural Gas : 93.1% Distillate Fuel Oil : 6.9% |
| New England Wind LLC | Avangrid Power LLC | Florida, MA | ISO New England (ISNE) | 74.1 GWh | Nov 2012 | Mar 2026 | Wind |
| Berkshire Wind Power Project | Massachusetts Mun Wholes Electric Co | Lanesboro, MA | ISO New England (ISNE) | 36.2 GWh | Apr 2011 | Mar 2026 | Wind |
| Mt Wachusett Community College | Mt Wachusett Community College | Gardner, MA | ISO New England (ISNE) | 3.6 GWh | Feb 2011 | Mar 2026 | Wind |
| Cottage Street Solar Facility | Western Massachusetts Electric Company | Springfield, MA | ISO New England (ISNE) | 3.6 GWh | Apr 2014 | Mar 2026 | Solar |
| Cape Cod Air Force Station - 6 SWS | US Air Force | Sagamore, MA | ISO New England (ISNE) | 6.8 GWh | Dec 2013 | Mar 2026 | Wind |
| Dept of Corrections NCCI Wind | Dept of Corrections NCCI Wind | Gardner, MA | ISO New England (ISNE) | 2.1 GWh | Oct 2013 | Mar 2026 | Wind |
| Framingham State University Plant | Framingham State University | Framingham, MA | ISO New England (ISNE) | 28.0 MWh | May 1974 | Mar 2026 | Solar : 64.3% Distillate Fuel Oil : 35.7% |
| Spring Hill Road | AES Distributed Energy | Barre, MA | ISO New England (ISNE) | 430.0 MWh | Nov 2015 | Mar 2026 | Solar |
| Exelon West Medway II LLC | Constellation Power, Inc | Medway, MA | ISO New England (ISNE) | 258.4 GWh | Feb 2019 | Mar 2026 | Natural Gas : 95.3% Kerosene : 4.7% |
| Southbridge Solar | AES Distributed Energy | Southbridge, MA | ISO New England (ISNE) | 2.2 GWh | Feb 2016 | Mar 2026 | Solar |
| Salem Harbor Power Development LP | Salem Harbor Power Development LP | Salem, MA | ISO New England (ISNE) | 1.7 TWh | Apr 2018 | Mar 2026 | Natural Gas |
| Southwick Solar PV | NSTAR Electric Company | Southwick, MA | ISO New England (ISNE) | 7.7 GWh | Dec 2018 | Mar 2026 | Solar |
| Montague Site 36-Grosolar | NSTAR Electric Company | Millers Falls, MA | ISO New England (ISNE) | 5.7 GWh | Sep 2018 | Mar 2026 | Solar |
| Vineyard Wind 1 | Vineyard Wind 1 LLC | Edgartown, MA | ISO New England (ISNE) | 134.2 GWh | - | Mar 2026 | Wind |
Browse Power Plants By Massachusetts Counties
Figures are based on March 2026 generation numbers.| County | State Rank | Active Plants | Mar 2026 Generation |
|---|---|---|---|
| Norfolk County, MA | # 1 | 39 | 7.0 TWh |
| Worcester County, MA | # 2 | 190 | 5.7 TWh |
| Essex County, MA | # 3 | 39 | 2.5 TWh |
| Middlesex County, MA | # 4 | 68 | 1.9 TWh |
| Hampden County, MA | # 5 | 86 | 1.8 TWh |
| Bristol County, MA | # 6 | 71 | 943.8 GWh |
| Plymouth County, MA | # 7 | 84 | 823.6 GWh |
| County | State Rank | Active Plants | Mar 2026 Generation |
|---|---|---|---|
| Barnstable County, MA | # 8 | 23 | 624.8 GWh |
| Suffolk County, MA | # 9 | 13 | 429.1 GWh |
| Franklin County, MA | # 10 | 33 | 280.2 GWh |
| Hampshire County, MA | # 11 | 37 | 270.0 GWh |
| Berkshire County, MA | # 12 | 44 | 246.9 GWh |
| Dukes County, MA | # 13 | 7 | 144.1 GWh |