Massachusetts operates 700 power plants totaling 14,691 MW of nameplate capacity. Natural Gas dominates the mix at 68%, followed by Hydroelectric (14%) and Solar (11%). The largest plant is Mystic Generating Station at 1,744 MW.
Showing the 120 largest plants by capacity. Massachusetts operates another 580 plants below this size — browse the lists below to reach them.
| Plant | City | Fuel | Capacity |
|---|---|---|---|
| Mystic Generating Station | Charlestown | Natural Gas | 1,744 MW |
| Canal | Sandwich | Natural Gas | 1,495 MW |
| Northfield Mountain | Northfield | Hydroelectric | 1,168 MW |
| Fore River Generating Station | North Weymouth | Natural Gas | 872 MW |
| Salem Harbor Power Development Lp | Salem | Natural Gas | 798 MW |
| Bear Swamp | Florida | Hydroelectric | 666 MW |
| Anp Bellingham Energy Project | Bellingham | Natural Gas | 578 MW |
| Anp Blackstone Energy Project | Blackstone | Natural Gas | 578 MW |
| Stony Brook | Ludlow | Natural Gas | 542 MW |
| Millennium Power | Charlton | Natural Gas | 428 MW |
| Bellingham Cogeneration Facility | Bellingham | Natural Gas | 386 MW |
| Berkshire Power | Agawam | Natural Gas | 289 MW |
| Exelon West Medway Ii Llc | Medway | Natural Gas | 264 MW |
| Masspower | Indian Orchard | Natural Gas | 261 MW |
| Milford Power Lp | Milford | Natural Gas | 249 MW |
| Kendall Square Station | Cambridge | Natural Gas | 235 MW |
| Potter Station 2 | Braintree | Natural Gas | 217 MW |
| Dighton Power Plant | Dighton | Natural Gas | 200 MW |
| Pittsfield Generating Lp | Pittsfield | Natural Gas | 176 MW |
| Exelon Medway Llc | Medway | Oil | 135 MW |
| Cleary Flood Hybrid | Taunton | Natural Gas | 121 MW |
| Semass Resource Recovery | West Wareham | Biomass | 98.5 MW |
| Dartmouth Power Associates Lp | Dartmouth | Natural Gas | 97.4 MW |
| Medical Area Total Energy Plant | Boston | Natural Gas | 94.8 MW |
| Tanner Street Generation | Lowell | Natural Gas | 85.0 MW |
| Deer Island Treatment Plant | Winthrop | Biomass | 72.8 MW |
| M Street Jet | Boston | Oil | 69.0 MW |
| Mmwec Simple Cycle Gas Turbine | Peabody | Natural Gas | 65.0 MW |
| Waters River | Peabody | Natural Gas | 64.9 MW |
| Cabot | Montague | Hydroelectric | 61.8 MW |
| Wheelabrator Saugus | Saugus | Biomass | 57.8 MW |
| Wheelabrator Millbury Facility | Millbury | Biomass | 47.6 MW |
| Covanta Haverhill | Haverhill | Biomass | 46.0 MW |
| Mass Inst Tech Cntrl Utilities/Cogen Plt | Cambridge | Natural Gas | 43.4 MW |
| Exelon Framingham Llc | Framingham | Oil | 42.6 MW |
| Wheelabrator North Andover | North Andover | Biomass | 40.3 MW |
| Hadley Falls | Holyoke | Hydroelectric | 33.4 MW |
| Cobble Mountain | Granville | Hydroelectric | 33.0 MW |
| New England Wind Llc | Florida | Wind | 28.5 MW |
| Outer Cape Community Battery | Provincetown | Other Fossil | 25.0 MW |
| Boott Hydropower | Lowell | Hydroelectric | 22.9 MW |
| Nantucket Hybrid | Nantucket | Oil | 22.4 MW |
| Central Heating Plant | Amherst | Natural Gas | 20.4 MW |
| Berkshire Wind Power Project | Lanesboro | Wind | 19.6 MW |
| Ne Renewable Fitchburg, Llc | Westminster | Biomass | 18.0 MW |
| Deerfield 5 | Florida | Hydroelectric | 17.5 MW |
| Univ Of Massachusetts Medical Center | Worcester | Natural Gas | 17.5 MW |
| Cherry Street | Hudson | Natural Gas | 17.3 MW |
| Lawrence Hydroelectric Associates | Lawrence | Hydroelectric | 14.8 MW |
| Sja Solar Llc-Solterra Monastery Csg | Spencer | Solar | 14.7 MW |