This is a list of electricity-generating power stations in the U.S. state of Connecticut, sorted by type and name. In 2024, Connecticut had a total summer capacity of 10.0 GW through all of its power plants, and a net generation of 44,761 GWh. In 2025, the electrical energy generation mix was 56.2% natural gas, 38.4% nuclear, 1.7% solar, 1.4% biomass & refuse-derived fuels, 0.8% hydroelectric, 0.6% petroleum, and 1% other. Distributed small-scale solar, including customer-owned photovoltaic panels, delivered an additional net 1,747 GWh to the state's electricity grid in 2024. This compares as more than twice the amount generated by Connecticut's utility-scale solar facilities.

Nuclear power stations Data reported by U.S. Energy Information Administration Plant name Location Coordinates Capacity(MW) Technology Yearcompleted Refs Millstone Nuclear Power Plant New London County 2,162.9 Nuclear Retired plants: Connecticut Yankee Nuclear Power Plant: 560 MW, operated 1968-1996

Fossil-fuel power stations Coal The last coal-fired plant was retired in 2021.

Petroleum Data reported by U.S. Energy Information Administration Plant name Location Coordinates Capacity(MW) Technology Yearcompleted Refs Backus Microgrid Project New London County 10.4 Petroleum liquids Branford New Haven County 21.8 Petroleum liquids Bridge Street 1 & 2 New London County 5.2 Petroleum liquids Bridgeport Station Fairfield County 17 Petroleum liquids CCSU Co-Gen-STBY Gen Hartford County 1 Petroleum liquids Cos Cob Fairfield County 115 Petroleum liquids Devon Station New Haven County 222.6 Petroleum liquids Fort Hill 1, 2, 3 & 4 New London County 10.4 Petroleum liquids Franklin Drive Litchfield County 21.8 Petroleum liquids Gary Court 1 & 2 New London County 6 Petroleum liquids Jewett City 1 New London County 2.6 Petroleum liquids Lebanon Pines 1 & 2 New London County 5.2 Petroleum liquids LNG 1 & 2 New London County 5.2 Petroleum liquids Middletown Middlesex County 417.2 Petroleum liquids Montville Station New London County 495.3 Petroleum liquids New Haven Harbor New Haven County 128.7 Petroleum liquids Norden 1-3 Fairfield County 6 Petroleum liquids North Main Street New London County 19 Petroleum liquids Norwich WWTP New London County 2 Petroleum liquids South Meadow Hartford County 167.2 Petroleum liquids Torrington Terminal Litchfield County 21.8 Petroleum liquids Tunnel New London County 16.5 Petroleum liquids Water Treatment 1 & 2 New London County 5.2 Petroleum liquids Waterside Power, LLC Fairfield County 69.6 Petroleum liquids Multi-fuel plant, listed is "total net summer capacity" by source. Not to be confused with the historic Cos Cob Power Station

Natural gas Data reported by U.S. Energy Information Administration Plant name Location Coordinates Capacity(MW) Technology Yearcompleted Refs A L Pierce New Haven County 84 Natural gas fired combustion turbine Algonquin Windsor Locks Hartford County 71 Natural gas fired combined cycle Bradley Energy Center Hartford County 5.8 Natural gas internal combustion engine Bridgeport Energy Project Fairfield County 520 Natural gas fired combined cycle Bridgeport Fuel Cell, LLC Fairfield County 16.6 Other natural gas Bridgeport Station Fairfield County 576.3 Natural gas fired combined cycle Capitol District Energy Center Hartford County 70.5 Natural gas fired combined cycle CCSU Co-Gen-STBY Gen Hartford County 2.6 Natural gas internal combustion engine CCSU Fuel Cell Project Hartford County 1.4 Other natural gas Cellu Tissue Hartford County 3 Natural gas internal combustion engine CJTS Energy Center Middlesex County 0.4 Other natural gas CPV Towantic Energy Center New Haven County 841.5 Natural gas fired combined cycle Danbury Hospital Cogen Plant Fairfield County 4.3 Natural gas fired combustion turbine Digital Fairfield Fairfield County 2 Other natural gas Fairfield University CHP Plant Fairfield County 4.5 Natural gas fired combustion turbine Foxwoods CoGen New London County 162 Natural gas fired combined cycle Frito Lay Incorporated Windham County 4.6 Natural gas fired combustion turbine Hartford Hospital Cogeneration Hartford County 11.8 Other natural gas,natural gas fired combined cycle HSCo CHP Hartford County 4 Natural gas fired combustion turbine IBM Southbury New Haven County 1.1 Other natural gas IKEA New Haven Rooftop PV & Fuel Cell New Haven County 0.3 Other natural gas Lake Road Generating Plant Windham County 840 Natural gas fired combined cycle Kimberly Clark-Unit 1,2,3 Litchfield County 36.3 Natural gas fired combined cycle,natural gas fired combustion turbine Kleen Energy Systems, LLC Middlesex County 693 Natural gas fired combined cycle Middletown Middlesex County 417.2 Natural gas steam turbine Milford Power Project New Haven County 578 Natural gas fired combined cycle New Haven Harbor New Haven County 447.9 Natural gas steam turbine Pepperidge Farm Bloomfield Hartford County 2.6 Other natural gas Pfizer Groton Fuel Cell New London County 5.6 Other natural gas Pfizer Groton Plant New London County 37.5 Natural gas fired combustion turbine,natural gas steam turbine Pratt & Whitney Hartford County 25.8 Natural gas fired combustion turbine Rand Whitney CHP Plant New London County 14.6 Natural gas fired combustion turbine Sikorsky Aircraft CHP Fairfield County 9.3 Natural gas fired combustion turbine South Windsor Fuel Cell Hartford County 5 Other natural gas Trinity College Fuel Cell Hartford County 1.4 Other natural gas TRS Fuel Cell Fairfield County 3.7 Other natural gas UB Fuel Cell Fairfield County 1.4 Other natural gas UCONN Cogen Facility Tolland County 25.7 Natural gas fired combined cycle UI RCP Bridgeport Seaside Fairfield County 2.5 Other natural gas UI RCP New Haven Fuel Cell New Haven County 2.8 Other natural gas UI RCP Woodbridge FC New Haven County 2.8 Other natural gas Waterbury Generation New Haven County 96 Natural gas steam turbine Wesleyan University Cogen 1 Middlesex County 2.4 Natural gas internal combustion engine Multi-fuel plant, listed is "total net summer capacity" by source.

Renewable power stations

Biomass and refuse-derived fuels Data reported by U.S. Energy Information Administration Plant name Location Coordinates Capacity(MW) Technology Yearcompleted Notes Refs Covanta Bristol Energy Hartford County 16.9 Municipal solid waste Covanta Southeastern Connecticut Company New London County 18.3 Municipal solid waste CT Resource Rec Authority Facility Hartford County 90 Municipal solid waste Closed July 2022 Exeter Energy LP Windham County 31.3 Tire-derived fuel (TDF) New Milford Gas Recovery Litchfield County 2.4 Landfill gas Plainfield Renewable Energy LLC Windham County 43 Wood/wood waste biomass Win Waste Innovations Bridgeport Fairfield County 67 Municipal solid waste Win Waste Innovations Lisbon New London County 14.6 Municipal solid waste

Geothermal There were no utility-scale Geothermal facilities in the state of Connecticut in 2019.

Hydroelectric

Data reported by U.S. Energy Information Administration Plant name Location Coordinates Capacity (MW) Year completed Refs Bulls Bridge Litchfield County 7.2 Falls Village Litchfield County 9 Goodwin Hydroelectric Hartford County 3.2 Kinneytown New Old New Haven County 2.3 McCallum Enterprises I LP Fairfield County 8.6 Quinebaug Lower Project Windham County 2.5 Rainbow (CT) Hartford County 8 Scotland Dam Windham County 2 Shepaug New Haven County 37.2 Stevenson Fairfield County 30.5 Taftville New London County 1.6 Tenth Street New London County 1.4 Tunnel New Haven County 1.6

Multi-fuel plant, listed is "total net summer capacity" by source.

Solar

Data reported by U.S. Energy Information AdministrationPlantLocationAreaCapacity (MW) Refs Adams Solar New London County 1 Advance Stores Company, Inc Hartford County 1 ALDI DC 2 Hartford County 1.2 Amazon BLD3 New Haven County 1 Antares-GRE 314 East Lyme LLC New London County 4 Barrett Farm Solar - Phase I Windham County 1.7 Becton Canaan Litchfield County 2.5 Brass Mill Center New Haven County 3.4 Canis Major Solar Farm Hartford County 2 Canis Minor Solar Farm Litchfield County 1 CMEEC - Bozrah New London County 2.5 CMEEC - Navy NE Trident New London County 1 CMEEC - Norwich Stott St Solar Hybrid New London County 4.3 CMEEC - Polaris Park Solar Hybrid New London County 4.3 Conn Mun Electric Energy Coop New London County 2.5 Corbin Russwin Phase 3 Berlin Hartford County 1 CP Middletown Solar I LLC Middlesex County 1 DWW Solar II Hartford County 36.9 Franklin Solar New London County 1 Fusion Solar Center LLC New London County 20 Hamilton Solar New London County 1 Hartford Landfill Solar EGF Hartford County 1 IKEA New Haven Rooftop PV & Fuel Cell New Haven County 0.8 Jackson Solar (CT) New London County 1 Jefferson Solar New London County 1 Manchester Community College East Hartford County 1 Manchester Community College North Hartford County 1 Plainfield Solar 2 Windham County 1 Sherman Solar New London County 1 Sikorsky Aircraft CHP Fairfield County 0.1 Somers Solar Center, LLC Tolland County 5 Stafford MS Ground Mount Community Solar Tolland County 2 Ticket Network South Windsor Hartford County 1 Town of Branford New Haven County 1.1 Town of Rocky Hill PV CSG Hartford County 3 UI RCP Bridgeport Seaside Fairfield County 2.2 Wilson Solar New London County 1 Woods Hill Solar Windham County 20 Multi-fuel plant, listed is "total net summer capacity" by source.

Wind

Data reported by U.S. Energy Information AdministrationPlantLocationAreaCapacity (MW) Refs Wind Colebrook South Litchfield County 5

Storage power stations

Battery storage There were no utility-scale battery storage facilities in the state of Connecticut in 2019.

Pumped storage Data reported by U.S. Energy Information AdministrationPlantLocationAreaCapacity (MW) Refs Rocky River Litchfield County 31

See also

List of power stations in the United States List of wind farms in the United States

Notes

References