Directory of Power Plants in Massachusetts
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Oakdale Power Station | Massachusetts Water Res Auth | West Boylston, MA | ISO New England (ISNE) | 13.9 GWh | Apr 1951 | Dec 2024 | Water |
| Kendall Square Station | Kendall Green Energy, LLC | Cambridge, MA | ISO New England (ISNE) | 1.5 TWh | May 1949 | Mar 2026 | Natural Gas : 97.4% Distillate Fuel Oil : 2.6% |
| General Electric Aircraft Engines | General Electric Aircraft Engines | Lynn, MA | ISO New England (ISNE) | 2.5 GWh | Dec 1947 | Mar 2026 | Solar |
| 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% |
| Chemical | City of Holyoke Gas and Electric Dept. | Holyoke, MA | ISO New England (ISNE) | 5.5 GWh | Dec 1934 | 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 |
| Indian Orchard | Central Rivers Power MA, LLC | Indian Orchard, MA | ISO New England (ISNE) | 6.3 GWh | Dec 1927 | Dec 2024 | Water |
| Sherman | Great River Hydro, LLC | Rowe, MA | ISO New England (ISNE) | 26.5 GWh | Nov 1926 | Dec 2024 | Water |
| Boatlock | City of Holyoke Gas and Electric Dept. | Holyoke, MA | ISO New England (ISNE) | 18.9 GWh | Dec 1920 | Dec 2024 | Water |
| Dwight | Central Rivers Power MA, LLC | Chicopee, MA | ISO New England (ISNE) | 6.3 GWh | Dec 1919 | Dec 2024 | Water |
| Pepperell Hydro Power Plant | Eagle Creek Renewable Energy, LLC | Pepperell, MA | ISO New England (ISNE) | 2.9 GWh | Dec 1919 | Mar 2026 | Water |
| Putts Bridge | Central Rivers Power MA, LLC | Ludlow, MA | ISO New England (ISNE) | 16.0 GWh | Dec 1917 | Dec 2024 | Water |
| Cabot | FirstLight Power Resources, Inc. - MA | Montague, MA | ISO New England (ISNE) | 304.2 GWh | Dec 1914 | Dec 2024 | Water |
| Gardners Falls | Central Rivers Power MA, LLC | Buckland, MA | ISO New England (ISNE) | 11.1 GWh | Dec 1913 | Dec 2024 | Water |
| Deerfield 2 | Great River Hydro, LLC | Conway, MA | ISO New England (ISNE) | 29.2 GWh | Jul 1913 | Dec 2024 | Water |
| International Paper Woronoco Mill | Eagle Creek Renewable Energy, LLC | Woronoco, MA | ISO New England (ISNE) | 5.4 GWh | Dec 1912 | Dec 2024 | Water |
| Deerfield 3 | Great River Hydro, LLC | Buckland, MA | ISO New England (ISNE) | 25.0 GWh | Jul 1912 | Dec 2024 | Water |
| Deerfield 4 | Great River Hydro, LLC | Buckland, MA | ISO New England (ISNE) | 20.2 GWh | Jul 1912 | Dec 2024 | Water |
| Indian River Hydro | Eagle Creek Renewable Energy, LLC | Russell, MA | ISO New England (ISNE) | 1.3 GWh | Nov 1909 | 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 |
| Turners Falls | FirstLight Power Resources, Inc. - MA | Montague, MA | ISO New England (ISNE) | 12.4 GWh | Dec 1904 | Dec 2024 | Water |
| Cabot Holyoke | City of Holyoke Gas and Electric Dept. | Holyoke, MA | ISO New England (ISNE) | 4.4 GWh | Dec 1892 | Dec 2024 | Water |
| 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 |
|---|---|---|---|
| Dukes County, MA | # 13 | 7 | 144.1 GWh |
| Berkshire County, MA | # 12 | 44 | 246.9 GWh |
| Hampshire County, MA | # 11 | 37 | 270.0 GWh |
| Franklin County, MA | # 10 | 33 | 280.2 GWh |
| Suffolk County, MA | # 9 | 13 | 429.1 GWh |
| Barnstable County, MA | # 8 | 23 | 624.8 GWh |
| Plymouth County, MA | # 7 | 84 | 823.6 GWh |
| County | State Rank | Active Plants | Mar 2026 Generation |
|---|---|---|---|
| Bristol County, MA | # 6 | 71 | 943.8 GWh |
| Hampden County, MA | # 5 | 86 | 1.8 TWh |
| Middlesex County, MA | # 4 | 68 | 1.9 TWh |
| Essex County, MA | # 3 | 39 | 2.5 TWh |
| Worcester County, MA | # 2 | 190 | 5.7 TWh |
| Norfolk County, MA | # 1 | 39 | 7.0 TWh |