Directory of Power Plants in Massachusetts
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Exelon Medway LLC | Constellation Power, Inc | Medway, MA | ISO New England (ISNE) | 4.4 GWh | Jun 1970 | Dec 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 |
| 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 |
| Shrewsbury | Town of Shrewsbury - (MA) | Shrewsbury, MA | ISO New England (ISNE) | 1.9 GWh | Oct 1969 | Dec 2025 | Distillate Fuel Oil |
| Exelon Framingham LLC | Constellation Power, Inc | Framingham, MA | ISO New England (ISNE) | 1.2 GWh | Aug 1969 | Dec 2025 | Distillate Fuel Oil |
| Wilkins Station | Town of Marblehead - (MA) | Marblehead, MA | ISO New England (ISNE) | 32.0 MWh | Oct 1975 | Dec 2025 | Distillate Fuel Oil |
| Front Street | City of Chicopee - (MA) | Chicopee, MA | ISO New England (ISNE) | 1.2 GWh | Dec 1977 | Dec 2025 | Distillate Fuel Oil |
| West Water Street | City of Taunton - (MA) | Taunton, MA | ISO New England (ISNE) | 2.4 GWh | Dec 2017 | Dec 2025 | Distillate Fuel Oil |
| Cherry Street | Town of Hudson - (MA) | Hudson, MA | ISO New England (ISNE) | 320.0 MWh | Apr 1951 | Dec 2025 | Distillate Fuel Oil : 58.5% Natural Gas : 41.5% |
| Stony Brook | Massachusetts Mun Wholes Electric Co | Ludlow, MA | ISO New England (ISNE) | 164.1 GWh | Oct 1981 | May 2026 | Distillate Fuel Oil : 61.3% Natural Gas : 38.7% |
| MMWEC Simple Cycle Gas Turbine | Massachusetts Mun Wholes Electric Co | Peabody, MA | ISO New England (ISNE) | 8.3 GWh | Jun 2024 | Dec 2025 | Distillate Fuel Oil : 69.0% Natural Gas : 31.0% |
| Medway Grid | Medway Grid LLC | Medway, MA | ISO New England (ISNE) | 19.5 GWh | - | May 2026 | Electricity used for energy storage |
| Chocksett Rd Energy Storage Project | Sterling Municipal Light Department - (MA) | Sterling, MA | ISO New England (ISNE) | 62.0 MWh | Mar 2017 | Dec 2025 | Electricity used for energy storage |
| M Street Jet | Massachusetts Bay Trans Auth | Boston, MA | ISO New England (ISNE) | 294.0 MWh | Apr 1979 | Dec 2025 | Kerosene |
| Greater New Bedford LFG Utiliz. Facility | CommonWealth New Bedford Energy LLC | New Bedford, MA | ISO New England (ISNE) | 13.4 GWh | Sep 2005 | Dec 2025 | Landfill Gas |
| Fitchburg Gas Recovery | WM Renewable Energy LLC | Westminster, MA | ISO New England (ISNE) | 31.7 GWh | Sep 2007 | Dec 2025 | Landfill Gas |
| Southbridge Landfill Gas-to-Energy | Southbridge Recycling and Disposal Park | Southbridge, MA | ISO New England (ISNE) | 9.6 GWh | Sep 2011 | Dec 2025 | Landfill Gas |
| Ameresco Chicopee Energy | AMERESCO Chicopee Energy LLC | Chicopee, MA | ISO New England (ISNE) | 3.7 GWh | Jan 2004 | Dec 2025 | Landfill Gas |
| Granby LFG | Industrial Power Services Corp. | Granby, MA | ISO New England (ISNE) | 1.7 GWh | Aug 2001 | Dec 2025 | Landfill Gas |
| MM Taunton Energy | MM Taunton Energy LLC | Taunton, MA | ISO New England (ISNE) | 6.9 GWh | Aug 1997 | Dec 2025 | Landfill Gas |
| Clark University | Clark University | Worcester, MA | ISO New England (ISNE) | 3.6 GWh | Dec 2012 | Dec 2025 | Natural Gas |
| Indian Orchard Plant 1 | Solutia Inc-Indian | Springfield, MA | ISO New England (ISNE) | 7.4 GWh | Apr 1985 | May 2026 | Natural Gas |
| West Groton CHP | Hollingsworth & Vose Co West Groton | Groton, MA | ISO New England (ISNE) | 22.0 GWh | Nov 2015 | Dec 2024 | Natural Gas |
| Masspower | Masspower | Indian Orchard, MA | ISO New England (ISNE) | 441.7 GWh | Jun 1993 | Dec 2025 | Natural Gas |
| ANP Blackstone Energy Project | ANP Blackstone Energy Company LLC | Blackstone, MA | ISO New England (ISNE) | 2.9 TWh | May 2001 | May 2026 | Natural Gas |
| ANP Bellingham Energy Project | Bellingham Power Generation LLC | Bellingham, MA | ISO New England (ISNE) | 3.1 TWh | Oct 2002 | May 2026 | Natural Gas |
| Millennium Power | Millennium Power Company, LLC | Charlton, MA | ISO New England (ISNE) | 995.2 GWh | Mar 2001 | May 2026 | Natural Gas |
| Berkshire Power | Berkshire Power Co LLC | Agawam, MA | ISO New England (ISNE) | 809.5 GWh | Aug 1999 | Dec 2025 | Natural Gas |
| Dighton Power Plant | Dighton Power, LLC | Dighton, MA | ISO New England (ISNE) | 275.5 GWh | Apr 1999 | Dec 2025 | Natural Gas |
| Wellesley College Central Utility Plant | Wellesley College | Wellesley, MA | ISO New England (ISNE) | 9.6 GWh | May 1985 | Dec 2025 | Natural Gas |
| Mass Inst Tech Cntrl Utilities/Cogen Plt | Massachusetts Inst of Tech | Cambridge, MA | ISO New England (ISNE) | 209.4 GWh | May 1995 | Dec 2025 | Natural Gas |
| Gillette SBMC | The Gillette Company | Boston, MA | ISO New England (ISNE) | 54.2 GWh | Jan 1971 | May 2026 | Natural Gas |
| Boston Medical Center CHP Plant | Boston Medical Center | Boston, MA | ISO New England (ISNE) | 14.0 GWh | Mar 2017 | Dec 2025 | Natural Gas |
| Milford Power LP | Milford Power LLC | Milford, MA | ISO New England (ISNE) | 253.3 GWh | Feb 1993 | Dec 2025 | Natural Gas |
| One Patriot | Bloom Energy | Foxborough, MA | ISO New England (ISNE) | 16.9 GWh | Nov 2019 | Dec 2025 | Natural Gas |
| Equinix - Billerica | Bloom Energy | Billerica, MA | ISO New England (ISNE) | 14.5 GWh | Aug 2021 | Dec 2025 | Natural Gas |
| Amherst College Co Gen | Amherst College | Amherst, MA | ISO New England (ISNE) | 8.2 GWh | Oct 2006 | Dec 2025 | Natural Gas |
| Salem Harbor Power Development LP | Salem Harbor Power Development LP | Salem, MA | ISO New England (ISNE) | 1.6 TWh | Apr 2018 | May 2026 | Natural Gas |
| Centech Gas Generator | Town of Shrewsbury - (MA) | Shrewsbury, MA | ISO New England (ISNE) | 428.0 MWh | Mar 2019 | Dec 2025 | Natural Gas |
| Smith College Central Heating Plant | The Trustees of Smith College | Northampton, MA | ISO New England (ISNE) | 6.5 GWh | Sep 2008 | Dec 2025 | Natural Gas |
| CoreSite - Somerville | Bloom Energy | Somerville, MA | ISO New England (ISNE) | 27.8 GWh | Aug 2020 | Dec 2025 | Natural Gas |
| Norton Powerhouse 2 | Norton Powerhouse 2 | Worcester, MA | ISO New England (ISNE) | 28.7 GWh | Oct 2022 | Dec 2025 | Natural Gas |
| Bridgewater Complex Co-Generation Plant | Massachusetts Department of Correction | Bridgewater, MA | ISO New England (ISNE) | 1.2 GWh | Oct 2015 | Dec 2025 | Natural Gas |
| 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% |
| Waters River | City of Peabody - (MA) | Peabody, MA | ISO New England (ISNE) | 5.5 GWh | Nov 1971 | Dec 2025 | Natural Gas : 71.3% Distillate Fuel Oil : 28.7% |
| High Street Station | Town of Ipswich - (MA) | Ipswich, MA | ISO New England (ISNE) | 153.0 MWh | May 1937 | Dec 2025 | Natural Gas : 92.3% Distillate Fuel Oil : 7.7% |
| Fore River Generating Station | Calpine Fore River Energy Center, LLC | North Weymouth, MA | ISO New England (ISNE) | 2.8 TWh | Jul 2003 | May 2026 | Natural Gas : 92.7% Distillate Fuel Oil : 7.3% |
| Cleary Flood Hybrid | City of Taunton - (MA) | Taunton, MA | ISO New England (ISNE) | 54.2 GWh | May 1966 | Dec 2025 | Natural Gas : 94.0% Distillate Fuel Oil : 6.0% |
| Exelon West Medway II LLC | Constellation Power, Inc | Medway, MA | ISO New England (ISNE) | 258.6 GWh | Feb 2019 | May 2026 | Natural Gas : 95.3% Kerosene : 4.7% |
| 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% |
| Dartmouth Power Associates LP | Dartmouth Energy Center | Dartmouth, MA | ISO New England (ISNE) | 88.9 GWh | Feb 1992 | Dec 2025 | Natural Gas : 96.7% Distillate Fuel Oil : 3.3% |
| 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% |
| Kendall Square Station | Kendall Green Energy, LLC | Cambridge, MA | ISO New England (ISNE) | 1.5 TWh | May 1949 | May 2026 | Natural Gas : 97.3% Distillate Fuel Oil : 2.7% |
| Erving Paper Mills | Erving Paper Mills Inc | Erving, MA | ISO New England (ISNE) | 41.9 GWh | Nov 2013 | May 2026 | Natural Gas : 98.0% Distillate Fuel Oil : 2.0% |
| Medical Area Total Energy Plant | MATEP LLC | Boston, MA | ISO New England (ISNE) | 318.1 GWh | Dec 1979 | Dec 2024 | Natural Gas : 98.3% Distillate Fuel Oil : 1.7% |
| Williams College - Campus CHP | President & Trustees of Williams College | Williamstown, MA | ISO New England (ISNE) | 3.2 GWh | Feb 2003 | Dec 2025 | Natural Gas : 98.4% Distillate Fuel Oil : 1.6% |
| Univ of Massachusetts Medical Center | University of Massachusetts Medical | Worcester, MA | ISO New England (ISNE) | 63.3 GWh | Mar 1974 | Dec 2025 | Natural Gas : 99.3% Distillate Fuel Oil : 0.6% |
| Bellingham Cogeneration Facility | Northeast Energy Associates LP | Bellingham, MA | ISO New England (ISNE) | 367.8 GWh | Aug 1991 | Dec 2024 | Natural Gas : 99.9% |
| Covanta Haverhill | Ogden Projects Inc-Haverhill | Haverhill, MA | ISO New England (ISNE) | 287.3 GWh | Apr 1989 | May 2026 | Non-biogenic Municipal Solid Waste : 52.8% Biogenic Municipal Solid Waste : 43.2% Distillate Fuel Oil : 4.1% |
| SEMASS Resource Recovery | SEMASS Partnership | West Wareham, MA | ISO New England (ISNE) | 553.0 GWh | Jun 1988 | May 2026 | Non-biogenic Municipal Solid Waste : 54.0% Biogenic Municipal Solid Waste : 44.2% Natural Gas : 1.7% |
| Wheelabrator Millbury Facility | Wheelabrator Environmental Systems | Millbury, MA | ISO New England (ISNE) | 288.2 GWh | Aug 1987 | May 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wheelabrator North Andover | Wheelabrator Environmental Systems | North Andover, MA | ISO New England (ISNE) | 240.5 GWh | Apr 1985 | May 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) | 180.5 GWh | Jul 1985 | May 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Deer Island Treatment Plant | Massachusetts Wtr Rauth-Deer I | Winthrop, MA | ISO New England (ISNE) | 33.2 GWh | Jul 1995 | May 2026 | Other Biomass Gas : 82.5% Distillate Fuel Oil : 13.1% Wind : 2.7% Solar : 1.8% |
| Canal | Canal Generating LLC | Sandwich, MA | ISO New England (ISNE) | 546.2 GWh | May 1968 | May 2026 | Residual Fuel Oil : 55.3% Natural Gas : 34.6% Distillate Fuel Oil : 10.1% |
| Cohasse Solar, LLC CSG | 38 Degrees North, LLC | Southbridge, MA | ISO New England (ISNE) | 1.5 GWh | Sep 2017 | Dec 2025 | Solar |
| ZPD-PT Solar Project 2017-038 Hybrid LLC | AES Distributed Energy | Lancaster, MA | ISO New England (ISNE) | 7.5 GWh | Mar 2021 | 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 |
| Alicea Solar Project Hybrid CSG | AES Distributed Energy | Southbridge, MA | ISO New England (ISNE) | 4.0 GWh | Nov 2020 | 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 |
| Hurteau Solar Project Hybrid | AES Distributed Energy | Uxbridge, MA | ISO New England (ISNE) | 2.8 GWh | Feb 2020 | Dec 2025 | Solar |
| Kearsarge Amesbury Hybrid | Kearsarge Amesbury LLC | Amesbury, MA | ISO New England (ISNE) | 5.0 GWh | Nov 2019 | Dec 2025 | Solar |
| Granby Solar, LLC CSG | Granby Solar, LLC | Granby, MA | ISO New England (ISNE) | 5.8 GWh | Jun 2021 | Dec 2025 | Solar |
| SELCO Community Solar | Massachusetts Mun Wholes Electric Co | Shrewsbury, MA | ISO New England (ISNE) | 4.6 GWh | May 2018 | Dec 2025 | Solar |
| Ware Palmer Road Solar LLC CSG | Ware Palmer Road Solar LLC | Ware, MA | ISO New England (ISNE) | 4.9 GWh | May 2021 | Dec 2024 | Solar |
| BWC Stony Brook, LLC Hybrid | AES Distributed Energy | Chelmsford, MA | ISO New England (ISNE) | 1.8 GWh | Jun 2021 | Dec 2025 | Solar |
| Elm Street | ISM Solar Dighton 3, LLC | Dighton, MA | ISO New England (ISNE) | 4.7 GWh | Nov 2020 | Dec 2025 | Solar |
| Breckenridge Solar | Breckenridge Street Solar 1, LLC | Palmer, MA | ISO New England (ISNE) | 6.7 GWh | Oct 2020 | Dec 2024 | Solar |
| Kenmare - Mansfield Branch Street | MN8 Energy LLC | Mansfield, MA | ISO New England (ISNE) | 2.3 GWh | May 2017 | Dec 2025 | Solar |
| Carver | Captona Carver LLC | North Carver, MA | ISO New England (ISNE) | 1.8 GWh | Apr 2017 | Dec 2025 | Solar |
| Hudson | Captona Hudson LLC | Hudson, MA | ISO New England (ISNE) | 5.4 GWh | Apr 2017 | Dec 2025 | Solar |
| Berkley | Captona Berkley LLC | Berkley, MA | ISO New England (ISNE) | 3.7 GWh | Mar 2017 | Dec 2025 | Solar |
| Cycz Solar Project CSG Hybrid | AES Distributed Energy | Spencer, MA | ISO New England (ISNE) | 2.9 GWh | May 2020 | Dec 2025 | Solar |
| Blair Wire Village Solar, LLC CSG | 38 Degrees North, LLC | Spencer, MA | ISO New England (ISNE) | 1.6 GWh | Nov 2017 | Dec 2025 | Solar |
| Barton Acres Solar, LLC CSG | 38 Degrees North, LLC | Phillipston, MA | ISO New England (ISNE) | 1.6 GWh | Sep 2017 | Dec 2025 | Solar |
| Boutillier Solar, LLC CSG | 38 Degrees North, LLC | Leicester, MA | ISO New England (ISNE) | 4.5 GWh | Mar 2018 | Dec 2025 | Solar |
| St. Joseph's Solar, LLC CSG | 38 Degrees North, LLC | Charlton, MA | ISO New England (ISNE) | 1.6 GWh | Nov 2017 | Dec 2025 | Solar |
| Randall Solar Project Hybrid | AES Distributed Energy | Berlin, MA | ISO New England (ISNE) | 8.5 GWh | Jun 2021 | Dec 2025 | Solar |
| Southampton Solar PV | NSTAR Electric Company | Southampton, MA | ISO New England (ISNE) | 2.6 GWh | Jan 2019 | Dec 2025 | Solar |
| Cherry Valley Solar, LLC CSG | 38 Degrees North, LLC | Leicester, MA | ISO New England (ISNE) | 1.5 GWh | Oct 2017 | Dec 2025 | Solar |
| West A&B Solar Project Hybrid CSG | AES Distributed Energy | Southbridge, MA | ISO New England (ISNE) | 4.7 GWh | Nov 2020 | Dec 2025 | Solar |
| Ledeaux Solar, LLC CSG | 38 Degrees North, LLC | North Brookfield, MA | ISO New England (ISNE) | 1.4 GWh | Oct 2017 | Dec 2025 | Solar |
| ISM Solar Dighton 2, LLC CSG | 38 Degrees North, LLC | Dighton, MA | ISO New England (ISNE) | 3.6 GWh | Nov 2017 | Dec 2025 | Solar |
| McDougle-Mitchell Solar Project Hybrid C | AES Distributed Energy | Charlton, MA | ISO New England (ISNE) | 6.9 GWh | Jul 2020 | Dec 2025 | Solar |
| Incom Solar, LLC CSG | 38 Degrees North, LLC | Charlton, MA | ISO New England (ISNE) | 3.2 GWh | Oct 2017 | Dec 2025 | Solar |
| JH Solar, LLC CSG | 38 Degrees North, LLC | North Brookfield, MA | ISO New England (ISNE) | 1.5 GWh | Oct 2017 | Dec 2025 | Solar |
| Woodchuck Solar, LLC CSG | 38 Degrees North, LLC | Spencer, MA | ISO New England (ISNE) | 1.5 GWh | Nov 2017 | Dec 2025 | Solar |
| Dudley River 3 Solar, LLC CSG | 38 Degrees North, LLC | Southbridge, MA | ISO New England (ISNE) | 1.7 GWh | Oct 2017 | Dec 2025 | Solar |
| Dudley River 2 Solar, LLC CSG | 38 Degrees North, LLC | Southbridge, MA | ISO New England (ISNE) | 1.6 GWh | Oct 2017 | Dec 2025 | Solar |
| Dudley River Solar, LLC CSG | 38 Degrees North, LLC | Southbridge, MA | ISO New England (ISNE) | 1.6 GWh | Oct 2017 | Dec 2025 | Solar |
Browse Power Plants By Massachusetts Counties
Figures are based on May 2026 generation numbers.| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Norfolk County, MA | # 1 | 40 | 6.7 TWh |
| Worcester County, MA | # 2 | 197 | 5.4 TWh |
| Essex County, MA | # 3 | 41 | 2.5 TWh |
| Middlesex County, MA | # 4 | 68 | 1.9 TWh |
| Hampden County, MA | # 5 | 89 | 1.9 TWh |
| Plymouth County, MA | # 6 | 84 | 814.7 GWh |
| Bristol County, MA | # 7 | 74 | 645.8 GWh |
| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Barnstable County, MA | # 8 | 25 | 628.3 GWh |
| Suffolk County, MA | # 9 | 14 | 428.0 GWh |
| Dukes County, MA | # 10 | 7 | 376.1 GWh |
| Hampshire County, MA | # 11 | 39 | 226.9 GWh |
| Berkshire County, MA | # 12 | 46 | 198.8 GWh |
| Franklin County, MA | # 13 | 33 | 182.1 GWh |