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Largest power plants in Massachusetts

The 50 largest power plants in Massachusetts by nameplate capacity, from EIA-860M for August 2026, with 2025 net generation from EIA-923.

Plants

50

Nameplate capacity

11,834 MW

Net generation, 2025

19.7 TWh

48 of 50 plants reported

Largest

Canal

1,495 MW

Top 50 by nameplate capacity

#PlantMW2025 net generation, GWhGWh, 2025Capacity factorOperator
1CanalBarnstable County · Oil and natural gas1,495374–Canal Generating LLC
2Northfield MountainFranklin County · Pumped storage1,168−285–FirstLight Power Resources, Inc. - MA
3Fore River Generating StationNorfolk County · Natural gas8723,10640.6%Calpine Fore River Energy Center, LLC
4Vineyard Wind 1Dukes County · Wind800––Vineyard Wind 1 LLC
5Salem Harbor Power Development LPEssex County · Natural gas7981,79425.7%Salem Harbor Power Development LP
6Bear SwampBerkshire County · Pumped storage666−154–Bear Swamp Power Company LLC
7ANP Bellingham Energy ProjectNorfolk County · Natural gas5783,50969.3%Bellingham Power Generation LLC
8ANP Blackstone Energy ProjectWorcester County · Natural gas5783,25464.3%ANP Blackstone Energy Company LLC
9Stony BrookHampden County · Oil and natural gas538104–Massachusetts Mun Wholes Electric Co
10Millennium PowerWorcester County · Natural gas42885222.8%Millennium Power Company, LLC
11Bellingham Cogeneration FacilityNorfolk County · Natural gas3863189.4%Northeast Energy Associates LP
12Berkshire PowerHampden County · Natural gas28981032.0%Berkshire Power Co LLC
13Exelon West Medway II LLCNorfolk County · Natural gas2642119.1%Constellation Power, Inc
14MasspowerHampden County · Natural gas26144219.3%Masspower
15Medway GridNorfolk County · Battery storage250––Medway Grid LLC
16Milford Power LPWorcester County · Natural gas24925311.6%Milford Power LLC
17Kendall Square StationMiddlesex County · Natural gas2351,53574.7%Kendall Green Energy, LLC
18Dighton Power PlantBristol County · Natural gas20027615.7%Dighton Power, LLC
19Pittsfield Generating LPBerkshire County · Natural gas1761358.8%Pittsfield Generating Company, LP
20Cranberry Point Energy StoragePlymouth County · Battery storage150−9.6*–Cranberry Point Energy Storage LLC
21Exelon Medway LLCNorfolk County · Oil1354.40.4%Constellation Power, Inc
22Cleary Flood HybridBristol County · Natural gas12154.25.3%City of Taunton - (MA)
23Potter Station 2Norfolk County · Natural gas11641.04.0%Town of Braintree - (MA)
24SEMASS Resource RecoveryPlymouth County · Municipal solid waste9956765.7%SEMASS Partnership
25Dartmouth Power Associates LPBristol County · Natural gas9788.910.4%Dartmouth Energy Center
26M Street JetSuffolk County · Oil690.30.0%Massachusetts Bay Trans Auth
27MMWEC Simple Cycle Gas TurbineEssex County · Natural gas658.31.5%Massachusetts Mun Wholes Electric Co
28CabotFranklin County · Hydro6223944.2%FirstLight Power Resources, Inc. - MA
29Medical Area Total Energy PlantSuffolk County · Natural gas6131437.8%MATEP LLC
30Wheelabrator SaugusEssex County · Municipal solid waste5818536.5%Wheelabrator Environmental Systems
31Wheelabrator Millbury FacilityWorcester County · Municipal solid waste4831976.6%Wheelabrator Environmental Systems
32Covanta HaverhillEssex County · Municipal solid waste46198*58.6%Ogden Projects Inc-Haverhill
33Waters RiverEssex County · Natural gas445.51.0%City of Peabody - (MA)
34Mass Inst Tech Cntrl Utilities/Cogen PltMiddlesex County · Natural gas4320955.1%Massachusetts Inst of Tech
35Exelon Framingham LLCNorfolk County · Oil431.20.3%Constellation Power, Inc
36Wheelabrator North AndoverEssex County · Municipal solid waste4024068.0%Wheelabrator Environmental Systems
37Hadley FallsHampden County · Hydro3313746.9%City of Holyoke Gas and Elec Dept - (MA)
38Cobble MountainHampden County · Hydro337.12.4%City of Holyoke Gas and Elec Dept - (MA)
39New England Wind LLCBerkshire County · Wind2974.429.8%Avangrid Power LLC
40Outer Cape Community BatteryBarnstable County · Battery storage25−0.1–Eversource
41Boott HydropowerMiddlesex County · Hydro2360.830.3%Boott Hydro, LLC - Hybrid
42Nantucket HybridNantucket County · Oil and battery storage22−0.4–Nantucket Electric Co
43Deer Island Treatment PlantSuffolk County · Biomass2133.45.2%Massachusetts Wtr Rauth-Deer I
44Central Heating PlantHampshire County · Natural gas2079.653.4%University of Massachusetts Amherst
45Berkshire Wind Power ProjectBerkshire County · Wind2041.924.4%Massachusetts Mun Wholes Electric Co
46NE Renewable Fitchburg, LLCWorcester County · Wood biomass1878.749.9%NE Renewable Fitchburg, LLC
47Deerfield 5Berkshire County · Hydro1844.429.0%Great River Hydro, LLC
48Univ of Massachusetts Medical CenterWorcester County · Natural gas1863.341.3%University of Massachusetts Medical
49Lawrence Hydroelectric AssociatesEssex County · Hydro1558.945.4%Central Rivers Power US, LLC
50SJA Solar LLC-Solterra Monastery CSGWorcester County · Solar1523.618.3%SJA Solar, LLC

* Fewer than 12 months of 2025 reported, so the total is partial.

MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources

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