Power Plants in Massachusetts

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.

Plants700operating sites
Capacity14,691 MWnameplate
Generation20.0M MWhannual
CO₂8.1Mmetric tons/year
Natural Gas 68%Hydroelectric 14%Solar 11%Biomass 3%Oil 2%

Plant locations

Showing the 120 largest plants by capacity. Massachusetts operates another 580 plants below this size — browse the lists below to reach them.

Largest plants in Massachusetts

PlantCityFuelCapacity
Mystic Generating StationCharlestownNatural Gas1,744 MW
CanalSandwichNatural Gas1,495 MW
Northfield MountainNorthfieldHydroelectric1,168 MW
Fore River Generating StationNorth WeymouthNatural Gas872 MW
Salem Harbor Power Development LpSalemNatural Gas798 MW
Bear SwampFloridaHydroelectric666 MW
Anp Bellingham Energy ProjectBellinghamNatural Gas578 MW
Anp Blackstone Energy ProjectBlackstoneNatural Gas578 MW
Stony BrookLudlowNatural Gas542 MW
Millennium PowerCharltonNatural Gas428 MW
Bellingham Cogeneration FacilityBellinghamNatural Gas386 MW
Berkshire PowerAgawamNatural Gas289 MW
Exelon West Medway Ii LlcMedwayNatural Gas264 MW
MasspowerIndian OrchardNatural Gas261 MW
Milford Power LpMilfordNatural Gas249 MW
Kendall Square StationCambridgeNatural Gas235 MW
Potter Station 2BraintreeNatural Gas217 MW
Dighton Power PlantDightonNatural Gas200 MW
Pittsfield Generating LpPittsfieldNatural Gas176 MW
Exelon Medway LlcMedwayOil135 MW
Cleary Flood HybridTauntonNatural Gas121 MW
Semass Resource RecoveryWest WarehamBiomass98.5 MW
Dartmouth Power Associates LpDartmouthNatural Gas97.4 MW
Medical Area Total Energy PlantBostonNatural Gas94.8 MW
Tanner Street GenerationLowellNatural Gas85.0 MW
Deer Island Treatment PlantWinthropBiomass72.8 MW
M Street JetBostonOil69.0 MW
Mmwec Simple Cycle Gas TurbinePeabodyNatural Gas65.0 MW
Waters RiverPeabodyNatural Gas64.9 MW
CabotMontagueHydroelectric61.8 MW
Wheelabrator SaugusSaugusBiomass57.8 MW
Wheelabrator Millbury FacilityMillburyBiomass47.6 MW
Covanta HaverhillHaverhillBiomass46.0 MW
Mass Inst Tech Cntrl Utilities/Cogen PltCambridgeNatural Gas43.4 MW
Exelon Framingham LlcFraminghamOil42.6 MW
Wheelabrator North AndoverNorth AndoverBiomass40.3 MW
Hadley FallsHolyokeHydroelectric33.4 MW
Cobble MountainGranvilleHydroelectric33.0 MW
New England Wind LlcFloridaWind28.5 MW
Outer Cape Community BatteryProvincetownOther Fossil25.0 MW
Boott HydropowerLowellHydroelectric22.9 MW
Nantucket HybridNantucketOil22.4 MW
Central Heating PlantAmherstNatural Gas20.4 MW
Berkshire Wind Power ProjectLanesboroWind19.6 MW
Ne Renewable Fitchburg, LlcWestminsterBiomass18.0 MW
Deerfield 5FloridaHydroelectric17.5 MW
Univ Of Massachusetts Medical CenterWorcesterNatural Gas17.5 MW
Cherry StreetHudsonNatural Gas17.3 MW
Lawrence Hydroelectric AssociatesLawrenceHydroelectric14.8 MW
Sja Solar Llc-Solterra Monastery CsgSpencerSolar14.7 MW

By county