Directory of Power Plants in Massachusetts
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Mystic Generating Station | Constellation Mystic Power LLC | Charlestown, MA | ISO New England (ISNE) | 1.8 TWh | May 1969 | Mar 2024 | Natural Gas |
| Exelon Medway LLC | Constellation Power, Inc | Medway, MA | ISO New England (ISNE) | 2.0 GWh | Jun 1970 | Dec 2024 | Distillate Fuel Oil |
| Kendall Square Station | Kendall Green Energy, LLC | Cambridge, MA | ISO New England (ISNE) | 1.5 TWh | May 1949 | Mar 2025 | Natural Gas : 99.0% Distillate Fuel Oil : 1.0% |
| Oak Bluffs Diesel Generating Facility | Vineyard Reliability LLC | Oak Bluffs, MA | ISO New England (ISNE) | 2.1 GWh | Dec 1968 | Dec 2024 | Distillate Fuel Oil |
| Canal | Canal Generating LLC | Sandwich, MA | ISO New England (ISNE) | 305.0 GWh | May 1968 | Mar 2025 | Natural Gas : 73.0% Residual Fuel Oil : 24.5% Distillate Fuel Oil : 2.5% |
| Boatlock | City of Holyoke Gas and Electric Dept. | Holyoke, MA | ISO New England (ISNE) | 18.9 GWh | Dec 1920 | Dec 2024 | Water |
| Chemical | City of Holyoke Gas and Electric Dept. | Holyoke, MA | ISO New England (ISNE) | 5.5 GWh | Dec 1934 | Dec 2024 | Water |
| Hadley Falls | City of Holyoke Gas and Electric Dept. | Holyoke, MA | ISO New England (ISNE) | 151.1 GWh | Dec 1951 | Dec 2024 | Water |
| Riverside Holyoke | City of Holyoke Gas and Electric Dept. | Holyoke, MA | ISO New England (ISNE) | 38.4 GWh | Dec 1905 | Dec 2024 | Water |
| Clark University | Clark University | Worcester, MA | ISO New England (ISNE) | 4.4 GWh | Dec 2012 | Dec 2024 | Natural Gas |
| Cabot | FirstLight Power Resources, Inc. - MA | Montague, MA | ISO New England (ISNE) | 304.2 GWh | Dec 1914 | Dec 2024 | Water |
| Cobble Mountain | City of Holyoke Gas and Electric Dept. | Granville, MA | ISO New England (ISNE) | 7.8 GWh | Dec 1929 | Dec 2024 | Water |
| Gardners Falls | Central Rivers Power MA, LLC | Buckland, MA | ISO New England (ISNE) | 11.1 GWh | Dec 1913 | Dec 2024 | Water |
| Putts Bridge | Central Rivers Power MA, LLC | Ludlow, MA | ISO New England (ISNE) | 16.0 GWh | Dec 1917 | Dec 2024 | Water |
| Potter Station 2 | Town of Braintree - (MA) | Braintree, MA | ISO New England (ISNE) | 23.3 GWh | Jun 1963 | Dec 2024 | Natural Gas : 93.9% Distillate Fuel Oil : 6.1% |
| High Street Station | Town of Ipswich - (MA) | Ipswich, MA | ISO New England (ISNE) | 197.0 MWh | May 1937 | Dec 2024 | Natural Gas : 91.9% Distillate Fuel Oil : 8.1% |
| Waters River | City of Peabody - (MA) | Peabody, MA | ISO New England (ISNE) | 4.6 GWh | Nov 1971 | Dec 2024 | Natural Gas : 78.9% Distillate Fuel Oil : 21.1% |
| Cleary Flood Hybrid | City of Taunton | Taunton, MA | ISO New England (ISNE) | 132.5 GWh | May 1966 | Dec 2024 | Natural Gas : 99.8% |
| ANP Bellingham Energy Project | Bellingham Power Generation LLC | Bellingham, MA | ISO New England (ISNE) | 2.9 TWh | Oct 2002 | Mar 2025 | Natural Gas |
| Erving Paper Mills | Erving Paper Mills Inc | Erving, MA | ISO New England (ISNE) | 42.8 GWh | Nov 2013 | Mar 2025 | Natural Gas : 98.0% Distillate Fuel Oil : 2.0% |
| NE Renewable Fitchburg, LLC | NE Renewable Fitchburg, LLC | Westminster, MA | ISO New England (ISNE) | 36.4 GWh | Jul 1992 | Dec 2023 | Wood/Wood Waste Solids : 97.6% Natural Gas : 2.4% |
| Milford Power LP | Milford Power LLC | Milford, MA | ISO New England (ISNE) | 253.1 GWh | Feb 1993 | Dec 2024 | Natural Gas |
| Mass Inst Tech Cntrl Utilities/Cogen Plt | Massachusetts Inst of Tech | Cambridge, MA | ISO New England (ISNE) | 204.8 GWh | May 1995 | Dec 2024 | Natural Gas |
| Wellesley College Central Utility Plant | Wellesley College | Wellesley, MA | ISO New England (ISNE) | 480.2 MWh | May 1985 | Dec 2023 | Natural Gas |
| Dighton Power Plant | Dighton Power, LLC | Dighton, MA | ISO New England (ISNE) | 358.4 GWh | Apr 1999 | Dec 2023 | Natural Gas |
| Berkshire Power | Berkshire Power Co LLC | Agawam, MA | ISO New England (ISNE) | 573.3 GWh | Aug 1999 | Dec 2024 | Natural Gas |
| Millennium Power | Millennium Power Company, LLC | Charlton, MA | ISO New England (ISNE) | 464.7 GWh | Mar 2001 | Mar 2025 | Natural Gas |
| MM Taunton Energy | MM Taunton Energy LLC | Taunton, MA | ISO New England (ISNE) | 5.8 GWh | Aug 1997 | Dec 2024 | Landfill Gas |
| Gillette SBMC | The Gillette Company | Boston, MA | ISO New England (ISNE) | 60.0 GWh | Jan 1971 | Mar 2025 | Natural Gas : 99.9% |
| ANP Blackstone Energy Project | ANP Blackstone Energy Company LLC | Blackstone, MA | ISO New England (ISNE) | 2.1 TWh | May 2001 | Mar 2025 | Natural Gas |
| Fore River Generating Station | Calpine Fore River Energy Center, LLC | North Weymouth, MA | ISO New England (ISNE) | 3.4 TWh | Jul 2003 | Mar 2025 | Natural Gas : 95.4% Distillate Fuel Oil : 4.6% |
| Ameresco Chicopee Energy | AMERESCO Chicopee Energy LLC | Chicopee, MA | ISO New England (ISNE) | 9.5 GWh | Jan 2004 | Dec 2024 | Landfill Gas |
| Fitchburg Gas Recovery | WM Renewable Energy LLC | Westminster, MA | ISO New England (ISNE) | 32.3 GWh | Sep 2007 | Dec 2024 | Landfill Gas |
| MA Military Reservation Wind Project | Air Force Civil Engineer Center | Otis ANG Base Bourne, MA | ISO New England (ISNE) | 9.7 GWh | Nov 2009 | Dec 2024 | Wind |
| Dorchester Solar Site | Massachusetts Electric Co | Dorchester, MA | ISO New England (ISNE) | 1.5 GWh | Dec 2011 | Dec 2024 | Solar |
| Haverhill Solar Power Project | Massachusetts Electric Co | Haverhill, MA | ISO New England (ISNE) | 1.2 GWh | Nov 2010 | Dec 2024 | Solar |
| NEDC Solar Site | Massachusetts Electric Co | Whitinsville, MA | ISO New England (ISNE) | 979.0 MWh | May 2010 | Dec 2024 | Solar |
| International Paper Woronoco Mill | Eagle Creek Renewable Energy, LLC | Woronoco, MA | ISO New England (ISNE) | 5.4 GWh | Dec 1912 | Dec 2024 | Water |
| Boott Hydropower | Boott Hydro, LLC - Hybrid | Lowell, MA | ISO New England (ISNE) | 27.5 GWh | Sep 1985 | Dec 2024 | Water |
| Pepperell Hydro Power Plant | Eagle Creek Renewable Energy, LLC | Pepperell, MA | ISO New England (ISNE) | 4.3 GWh | Dec 1919 | Mar 2025 | Water |
| Masspower | Masspower | Indian Orchard, MA | ISO New England (ISNE) | 609.1 GWh | Jun 1993 | Dec 2023 | Natural Gas |
| Deer Island Treatment Plant | Massachusetts Wtr Rauth-Deer I | Winthrop, MA | ISO New England (ISNE) | 35.3 GWh | Jul 1995 | Mar 2025 | Other Biomass Gas : 78.7% Distillate Fuel Oil : 12.5% Water : 4.8% Wind : 2.3% Solar : 1.8% |
| Oakdale Power Station | Massachusetts Water Res Auth | West Boylston, MA | ISO New England (ISNE) | 2.4 GWh | Apr 1951 | Dec 2024 | Water |
| Cosgrove Intake and Power Station | Massachusetts Water Res Auth | Clinton, MA | ISO New England (ISNE) | 738.0 MWh | Dec 1968 | Dec 2024 | Water |
| Medical Area Total Energy Plant | MATEP LLC | Boston, MA | ISO New England (ISNE) | 338.6 GWh | Dec 1979 | Dec 2023 | Natural Gas : 99.7% |
| Pittsfield Generating LP | Pittsfield Generating Company, LP | Pittsfield, MA | ISO New England (ISNE) | 31.2 GWh | Jun 1990 | Feb 2025 | Natural Gas : 94.6% Distillate Fuel Oil : 5.4% |
| Univ of Massachusetts Medical Center | University of Massachusetts Medical | Worcester, MA | ISO New England (ISNE) | 68.7 GWh | Mar 1974 | Dec 2024 | Natural Gas : 99.2% Distillate Fuel Oil : 0.7% |
| Barnstable Landfill | Clean Focus Yield, LLC | Marstons Mills, MA | ISO New England (ISNE) | 5.3 GWh | Aug 2014 | Dec 2024 | Solar |
| SEMASS Resource Recovery | SEMASS Partnership | West Wareham, MA | ISO New England (ISNE) | 568.9 GWh | Jun 1988 | Mar 2025 | Non-biogenic Municipal Solid Waste : 54.1% Biogenic Municipal Solid Waste : 44.3% Natural Gas : 1.5% |
| Lawrence Hydroelectric Associates | Central Rivers Power US, LLC | Lawrence, MA | ISO New England (ISNE) | 65.1 GWh | Jun 1981 | Dec 2024 | Water |
| Covanta Haverhill | Ogden Projects Inc-Haverhill | Haverhill, MA | ISO New England (ISNE) | 298.4 GWh | Apr 1989 | Mar 2025 | Non-biogenic Municipal Solid Waste : 54.8% Biogenic Municipal Solid Waste : 44.8% |
| Wheelabrator North Andover | Wheelabrator Environmental Systems | North Andover, MA | ISO New England (ISNE) | 238.8 GWh | Apr 1985 | Mar 2025 | 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) | 322.8 GWh | Aug 1987 | Mar 2025 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wheelabrator Saugus | Wheelabrator Environmental Systems | Saugus, MA | ISO New England (ISNE) | 231.4 GWh | Jul 1985 | Mar 2025 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Dartmouth Power Associates LP | Morris Energy Operations Company, LLC | Dartmouth, MA | ISO New England (ISNE) | 63.0 GWh | Feb 1992 | Dec 2024 | Natural Gas : 99.7% |
| Collins Facility | Relevate Power Management LLC | Wilbraham, MA | ISO New England (ISNE) | 6.8 GWh | Feb 1985 | Dec 2023 | Water |
| Cedarville CSG | Altus Power America Management, LLC | Plymouth, MA | ISO New England (ISNE) | 4.4 GWh | Jun 2017 | Dec 2024 | Solar |
| Belchertown | Altus Power America Management, LLC | Belchertown, MA | ISO New England (ISNE) | 1.5 GWh | Nov 2015 | Dec 2024 | Solar |
| Stone Hill Solar CSG | MN8 Energy LLC | North Easton, MA | ISO New England (ISNE) | 2.8 GWh | Jun 2014 | Dec 2024 | Solar |
| Bridgewater Solar CSG | MN8 Energy LLC | Bridgewater, MA | ISO New England (ISNE) | 3.9 GWh | Jul 2015 | Dec 2024 | Solar |
| Holliston Solar CSG | MN8 Energy LLC | Holliston, MA | ISO New England (ISNE) | 1.1 GWh | Jun 2015 | Dec 2024 | Solar |
| Wilmington Solar | MN8 Energy LLC | Wilmington, MA | ISO New England (ISNE) | 2.6 GWh | Oct 2015 | Dec 2024 | Solar |
| Fall River Solar CSG | MN8 Energy LLC | Fall River, MA | ISO New England (ISNE) | 2.5 GWh | Jan 2013 | Dec 2024 | Solar |
| Shirley Landfill | Altus Power America Management, LLC | Shirley, MA | ISO New England (ISNE) | 1.5 GWh | Apr 2017 | Dec 2024 | Solar |
| DDR Shoppers World | Altus Power America Management, LLC | Framingham, MA | ISO New England (ISNE) | 1.9 GWh | Oct 2017 | Dec 2024 | Solar |
| Meadow Solar | Altus Power America Management, LLC | Boston, MA | ISO New England (ISNE) | 4.3 GWh | Nov 2016 | Dec 2024 | Solar |
| West Brookfield Solar, LLC | CVI CleanCapital Solar 7 | West Brookfield, MA | ISO New England (ISNE) | 1.9 GWh | Dec 2015 | Dec 2024 | Solar |
| Deerfield CSG Solar | MN8 Energy LLC | Deerfield, MA | ISO New England (ISNE) | 6.3 GWh | Nov 2017 | Dec 2024 | Solar |
| Iron Horse Solar 4, LLC | Iron Horse Solar 4, LLC | North Billerica, MA | ISO New England (ISNE) | 7.4 GWh | May 2017 | Dec 2023 | Solar |
| Hampshire College Hybrid | Tesla Inc. | Amherst, MA | ISO New England (ISNE) | 5.2 GWh | Apr 2017 | Dec 2024 | Solar |
| Town of Lexington Solar | Syncarpha Lexington, LLC | Lexington, MA | ISO New England (ISNE) | 2.6 GWh | Apr 2017 | Dec 2024 | Solar |
| Curtis Hill Solar CSG | CCC Solar Holdings LLC | Charlton, MA | ISO New England (ISNE) | 2.8 GWh | Sep 2016 | Dec 2024 | Solar |
| Depot Hill Solar CSG | CCC Solar Holdings LLC | Charlton, MA | ISO New England (ISNE) | 3.1 GWh | Sep 2016 | Dec 2024 | Solar |
| Bird Machine Solar Farm | Bird Machine Solar Farm, LLC | South Walpole, MA | ISO New England (ISNE) | 5.9 GWh | Jul 2017 | Dec 2024 | Solar |
| Iron Horse Solar I CSG | Iron Horse Solar 1, LLC | North Billerica, MA | ISO New England (ISNE) | 4.3 GWh | Nov 2016 | Dec 2024 | Solar |
| Rising Paper | Altus Power America Management, LLC | Great Barrington, MA | ISO New England (ISNE) | 3.7 GWh | Apr 2016 | Dec 2024 | Solar |
| SJA Solar LLC-Solterra Monastery CSG | SJA Solar, LLC | Spencer, MA | ISO New England (ISNE) | 27.3 GWh | Nov 2016 | Dec 2024 | Solar |
| Fairhaven C CSG | MN8 Energy LLC | Fairhaven, MA | ISO New England (ISNE) | 2.9 GWh | Apr 2017 | Dec 2024 | Solar |
| West Bridgewater AB CSG | MN8 Energy LLC | West Bridgewater, MA | ISO New England (ISNE) | 2.7 GWh | May 2017 | Dec 2024 | Solar |
| Carver MA 1 Community Solar | Navisun LLC | Carver, MA | ISO New England (ISNE) | 2.8 GWh | Aug 2016 | Dec 2023 | Solar |
| Wareham MA 1 Community Solar | Navisun LLC | Wareham, MA | ISO New England (ISNE) | 3.1 GWh | Aug 2016 | Dec 2023 | Solar |
| Hardwick-Athol & Eagle Hill | SEC CRSD Solar One, LLC | Hardwick, MA | ISO New England (ISNE) | 2.6 GWh | Jun 2015 | Dec 2024 | Solar |
| Westport MA 1 Community Solar | Navisun LLC | Westport, MA | ISO New England (ISNE) | 2.2 GWh | Aug 2016 | Dec 2023 | Solar |
| Westport MA 2 Community Solar | Navisun LLC | Westport, MA | ISO New England (ISNE) | 1.8 GWh | Aug 2016 | Dec 2023 | Solar |
| Rail Trail | Altus Power America Management, LLC | Great Barrington, MA | ISO New England (ISNE) | 3.3 GWh | Apr 2016 | Dec 2024 | Solar |
| 126 Grove Solar LLC | Altus Power America Management, LLC | Franklin, MA | ISO New England (ISNE) | 1.6 GWh | May 2012 | Dec 2024 | Solar |
| Hampden | Altus Power America Management, LLC | Hampden, MA | ISO New England (ISNE) | 5.2 GWh | Jun 2015 | Dec 2024 | Solar |
| Shirley Water | Altus Power America Management, LLC | Shirley, MA | ISO New England (ISNE) | 3.1 GWh | Jul 2016 | Dec 2024 | Solar |
| Morin Solar 2013 LLC | CVI CleanCapital Solar 6 | Warren, MA | ISO New England (ISNE) | 5.0 GWh | Nov 2013 | Dec 2024 | Solar |
| Brookfield Solar 2013 LLC | CVI CleanCapital Solar 6 | North Brookfield, MA | ISO New England (ISNE) | 2.5 GWh | Nov 2013 | Dec 2024 | Solar |
| WYM 1250 Palmer LLC | CVI CleanCapital Solar 6 | Palmer, MA | ISO New England (ISNE) | 755.0 MWh | Aug 2013 | Dec 2023 | Solar |
| Southern Sky Renew Energy Berkley LLC | Southern Sky Renewable Energy Berkley, LLC | Berkley, MA | ISO New England (ISNE) | 3.4 GWh | May 2014 | Dec 2024 | Solar |
| Worcester Landfill | City of Worcester DPW | Worcester, MA | ISO New England (ISNE) | 8.8 GWh | Apr 2017 | Dec 2023 | Solar |
| Renew Canal 1 CSG LLC | NRG Renew Canal 1 LLC | Sandwich, MA | ISO New England (ISNE) | 1.9 GWh | May 2017 | Dec 2024 | Solar |
| Pleasantdale Road Community Solar | Pleasantdale Road Solar, LLC | Rutland, MA | ISO New England (ISNE) | 1.4 GWh | Aug 2017 | Dec 2024 | Solar |
| Boston Medical Center CHP Plant | Boston Medical Center | Boston, MA | ISO New England (ISNE) | 14.2 GWh | Mar 2017 | Dec 2024 | Natural Gas |
| 433 Purchase Solar NG, LLC | NuGen Capital Management | Swansea, MA | ISO New England (ISNE) | 3.8 GWh | Mar 2012 | Dec 2024 | Solar |
| Old Wardour Solar | NuGen Capital Management | East Brookfield, MA | ISO New England (ISNE) | 6.6 GWh | Dec 2015 | Dec 2024 | Solar |
| Shuman Solar | NuGen Capital Management | Stoughton, MA | ISO New England (ISNE) | 2.1 GWh | Mar 2016 | Dec 2024 | Solar |
| Vuelta Solar | NuGen Capital Management | East Brookfield, MA | ISO New England (ISNE) | 6.6 GWh | Dec 2015 | Dec 2024 | Solar |
Browse Power Plants By Massachusetts Counties
Figures are based on March 2025 generation numbers.| County | State Rank | Active Plants | Mar 2025 Generation |
|---|---|---|---|
| Norfolk County, MA | # 1 | 38 | 7.1 TWh |
| Worcester County, MA | # 2 | 190 | 4.0 TWh |
| Middlesex County, MA | # 3 | 68 | 3.8 TWh |
| Essex County, MA | # 4 | 39 | 2.1 TWh |
| Hampden County, MA | # 5 | 86 | 1.8 TWh |
| Plymouth County, MA | # 6 | 82 | 868.7 GWh |
| Bristol County, MA | # 7 | 70 | 765.7 GWh |
| County | State Rank | Active Plants | Mar 2025 Generation |
|---|---|---|---|
| Suffolk County, MA | # 8 | 13 | 456.2 GWh |
| Barnstable County, MA | # 9 | 22 | 378.3 GWh |
| Franklin County, MA | # 10 | 33 | 294.6 GWh |
| Hampshire County, MA | # 11 | 37 | 142.3 GWh |
| Berkshire County, MA | # 12 | 44 | 73.1 GWh |
| Dukes County, MA | # 13 | 7 | 9.9 GWh |