Prices here are state averages across all utilities and rate plans, from the U.S. Energy Information Administration — not the rate on any one bill. Generation-mix figures are reported annually, not real time.

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Power Plants in Connecticut

181 operating plants, ranked by nameplate capacity.

MillstoneDominion Energy Nuclear Conn Inc · Nuclear · 2 generators2,259.9 MW CPV Towantic Energy CenterCPV Towantic, LLC · Natural Gas Fired Combined Cycle · 3 generators841.5 MW Lake Road Generating PlantLake Road Generating Co LP · Natural Gas Fired Combined Cycle · 3 generators840 MW Kleen Energy SystemsKleen Energy Systems, LLC · Natural Gas Fired Combined Cycle · 3 generators693 MW New Haven SteamGeneration Bridge II Connecticut, LLC · Petroleum Liquids · 4 generators641.5 MW Milford Power ProjectMilford Power Co LLC · Natural Gas Fired Combined Cycle · 2 generators578 MW Bridgeport StationGeneration Bridge II Connecticut, LLC · Natural Gas Fired Combined Cycle · 2 generators576.3 MW Bridgeport Energy ProjectBridgeport Energy LLC · Natural Gas Fired Combined Cycle · 3 generators520 MW Montville StationMontville Power LLC · Petroleum Liquids · 2 generators489.9 MW Wallingford EnergyWallingford Energy LLC · Natural Gas Fired Combustion Turbine · 7 generators350 MW GenConn Devon LLCGenConn Devon LLC · Petroleum Liquids · 4 generators242 MW GenConn Middletown LLCGenConn Middletown LLC · Petroleum Liquids · 4 generators242 MW Devon StationDevon Power LLC · Petroleum Liquids · 5 generators222.6 MW Gravel Pit Solar, LLCGravel Pit Solar, LLC · Solar Photovoltaic · 2 generators120 MW Cos CobConnecticut Jet Power LLC · Petroleum Liquids · 5 generators115 MW Waterbury GenerationEngie North America · Natural Gas Fired Combustion Turbine · 1 generator96 MW A L PierceMPH AL Pierce, LLC · Natural Gas Fired Combustion Turbine · 1 generator84 MW Algonquin Windsor LocksAhlstrom Power Windsor Locks LLC · Natural Gas Fired Combined Cycle · 3 generators71 MW Waterside Power, LLCWaterside Power, LLC · Petroleum Liquids · 3 generators69.6 MW Wheelabrator BridgeportWheelabrator Environmental Systems · Municipal Solid Waste · 1 generator67 MW Quinebaug SolarQuinebaug Solar, LLC · Solar Photovoltaic · 1 generator49.4 MW Plainfield Renewable Energy LLCPlainfield Renewable Energy, LLC · Wood/Wood Waste Biomass · 1 generator43 MW Pfizer Groton PlantPfizer Inc · Natural Gas Steam Turbine · 4 generators37.5 MW ShepaugFirstLight Power Resources Services LLC · Conventional Hydroelectric · 1 generator37.2 MW DWW Solar llDWW Solar ll LLC · Solar Photovoltaic · 1 generator36.9 MW Kimberly Clark-Unit 1,2,3Kimberly-Clark Corporation · Natural Gas Fired Combined Cycle · 3 generators36.3 MW Rocky River (CT)FirstLight Power Resources Services LLC · Hydroelectric Pumped Storage · 3 generators31 MW StevensonFirstLight Power Resources Services LLC · Conventional Hydroelectric · 4 generators30.5 MW Pratt & WhitneyUnited Technologies · Natural Gas Fired Combustion Turbine · 1 generator25.8 MW UCONN Cogen FacilityUniversity of Connecticut · Natural Gas Fired Combined Cycle · 4 generators25.7 MW TorringtonConnecticut Jet Power LLC · Petroleum Liquids · 1 generator21.8 MW Franklin DriveConnecticut Jet Power LLC · Petroleum Liquids · 1 generator21.8 MW BranfordConnecticut Jet Power LLC · Petroleum Liquids · 1 generator21.8 MW Fusion Solar Center LLCFusion Solar Centre, L.L.C · Solar Photovoltaic · 1 generator20 MW Woods Hill SolarWoods Hill Solar, LLC · Solar Photovoltaic · 1 generator20 MW SR LitchfieldSR Litchfield, LLC · Solar Photovoltaic · 1 generator19.8 MW Nutmeg SolarNutmeg Solar LLC · Solar Photovoltaic · 1 generator19.6 MW Covanta Southeastern Connecticut CompanyCovanta Southeastern Connecticut Company · Municipal Solid Waste · 1 generator18.3 MW Bridgeport Fuel Cell, LLCBridgeport Fuel Cell, LLC · Other Natural Gas · 1 generator16.6 MW Rand Whitney CHP PlantRand Whitney Containerboard L.P. · Natural Gas Fired Combustion Turbine · 1 generator16.5 MW Covanta Bristol EnergyCovanta Bristol Inc · Municipal Solid Waste · 1 generator16.3 MW Foxwoods CoGenFoxwoods Resort Casino · Natural Gas Fired Combined Cycle · 3 generators16.2 MW Wallingford SolarWallingford Renewable Energy, LLC · Solar Photovoltaic · 1 generator16.1 MW North Stonington Solar Center, LLCAdapture Renewables, Inc. · Solar Photovoltaic · 1 generator15 MW Wheelabrator LisbonWheelabrator Environmental Systems · Municipal Solid Waste · 1 generator14.6 MW Derby Fuel CellDerby Fuel Cell LLC · Other Natural Gas · 5 generators14 MW SR North StoningtonSR North Stonington, LLC · Solar Photovoltaic · 1 generator12 MW Hartford Hospital CogenerationCartier Energy, LLC · Natural Gas Fired Combined Cycle · 3 generators11.8 MW Fort Hill 1, 2, 3 & 4Connecticut Mun Elec Engy Coop · Petroleum Liquids · 4 generators10.4 MW Backus Microgrid ProjectConnecticut Mun Elec Engy Coop · Petroleum Liquids · 4 generators10.4 MW Stamford HealthStamford Health Systems, Inc. · Petroleum Liquids · 9 generators10.4 MW Generate Colchester Fuel Cells, LLCGenerate Colchester Fuel Cells, LLC · Other Natural Gas · 1 generator10 MW Sikorsky Aircraft CHPSikorsky Aircraft Corporation · Natural Gas Fired Combustion Turbine · 3 generators9.9 MW Falls VillageFirstLight Power Resources Services LLC · Conventional Hydroelectric · 3 generators9 MW Derby HydroMcCallum Enterprises I LP · Conventional Hydroelectric · 2 generators8 MW Rainbow (CT)Farmington River Power Company · Conventional Hydroelectric · 2 generators8 MW Subase Microgrid ProjectConnecticut Mun Elec Engy Coop · Other Natural Gas · 2 generators7.4 MW Naval Sub Base New London Fuel CellGroton Station Fuel Cell, LLC · Other Natural Gas · 2 generators7.4 MW Bulls BridgeFirstLight Power Resources Services LLC · Conventional Hydroelectric · 6 generators7.2 MW Bradley Energy CenterAmeresco Select Inc · Natural Gas Internal Combustion Engine · 4 generators5.8 MW Pfizer Groton Fuel CellGroton Fuel Cell 1 LLC · Other Natural Gas · 2 generators5.6 MW Lebanon Pines 1 & 2Connecticut Mun Elec Engy Coop · Petroleum Liquids · 2 generators5.2 MW Bridge Street 1 & 2Connecticut Mun Elec Engy Coop · Petroleum Liquids · 2 generators5.2 MW Water Treatment 1 & 2Connecticut Mun Elec Engy Coop · Petroleum Liquids · 2 generators5.2 MW Gary Court 1 & 2Connecticut Mun Elec Engy Coop · Petroleum Liquids · 2 generators5.2 MW LNG 1 & 2Connecticut Mun Elec Engy Coop · Petroleum Liquids · 2 generators5.2 MW Somers Solar Center, LLCOnward Energy · Solar Photovoltaic · 1 generator5 MW UI RCP Bridgeport SeasideUnited Illuminating Co · Other Natural Gas · 2 generators5 MW South Windsor Fuel CellSouth Energy Investments LLC · Other Natural Gas · 1 generator5 MW North Franklin SolarNJR Clean Energy Ventures Corporation · Solar Photovoltaic · 1 generator5 MW East Windsor Solar OneDG Connecticut III, LLC · Solar Photovoltaic · 1 generator5 MW Wind Colebrook SouthWind Colebrook South · Onshore Wind Turbine · 1 generator5 MW Southington Solar OneDG Connecticut III, LLC · Solar Photovoltaic · 1 generator4.7 MW Frito Lay IncorporatedFrito Lay Incorporated Dayville · Natural Gas Fired Combustion Turbine · 1 generator4.6 MW Fairfield University CHP PlantFairfield University · Natural Gas Fired Combustion Turbine · 1 generator4.5 MW Danbury Hospital Cogen PlantDanbury Hospital · Natural Gas Fired Combustion Turbine · 1 generator4.3 MW CMEEC - Polaris Park Solar HybridTesla Inc. · Solar Photovoltaic · 2 generators4.3 MW CMEEC - Norwich Stott St Solar HybridTesla Inc. · Solar Photovoltaic · 2 generators4.3 MW East Windsor Solar TwoEast Windsor Solar Two, LLC · Solar Photovoltaic · 1 generator4 MW Norfolk Landfill Solar ProjectNJR Clean Energy Ventures Corporation · Solar Photovoltaic · 1 generator4 MW Raffia Road Solar ProjectNJR Clean Energy Ventures Corporation · Solar Photovoltaic · 1 generator4 MW East WindsorNJR Clean Energy Ventures Corporation · Solar Photovoltaic · 1 generator4 MW Stafford Solar OneNJR Clean Energy Ventures Corporation · Solar Photovoltaic · 1 generator4 MW HSCo CHPCartier Energy, LLC · Natural Gas Fired Combustion Turbine · 1 generator4 MW Antares-GRE 314 East Lyme LLCMN8 Energy LLC · Solar Photovoltaic · 1 generator4 MW Enfield Solar OneEnfield Solar One, LLC · Solar Photovoltaic · 1 generator4 MW Amazon BDL4Telyon AMZ Windsor LLC · Solar Photovoltaic · 1 generator3.9 MW Burlington Solar 1DG Connecticut III, LLC · Solar Photovoltaic · 1 generator3.5 MW Brass Mill CenterBrass Mill Center · Solar Photovoltaic · 1 generator3.4 MW UDR Glastonbury Fuel CellUIL Distributed Resources, LLC · Other Natural Gas · 1 generator3.4 MW Woodstock Solar OneNJR Clean Energy Ventures Corporation · Solar Photovoltaic · 1 generator3 MW Bristol Solar One, LLCDG Connecticut III, LLC · Solar Photovoltaic · 1 generator3 MW Cellu TissueDunn Paper East Hartford, LLC · Natural Gas Internal Combustion Engine · 1 generator3 MW Town of Rocky Hill PV CSGTesla Inc. · Solar Photovoltaic · 3 generators3 MW Windsor Solar OneNJR Clean Energy Ventures Corporation · Solar Photovoltaic · 1 generator3 MW Glastonbury Solar OneNJR Clean Energy Ventures Corporation · Solar Photovoltaic · 1 generator3 MW UI RCP Woodbridge FCUnited Illuminating Co · Other Natural Gas · 1 generator2.8 MW Wyre Wynd Hydroelectric ProjectRelevate Power Management LLC · Conventional Hydroelectric · 2 generators2.8 MW UI RCP New Haven Fuel CellUnited Illuminating Co · Other Natural Gas · 1 generator2.8 MW Niagara Bottling - BloomfieldWestbound Solar 3, LLC · Solar Photovoltaic · 1 generator2.8 MW

Showing the top 100 of 181 plants by capacity.

Source: U.S. Energy Information Administration, Forms EIA-860/EIA-860M — currently operating generators only, aggregated to the plant level.

Power Plants in Connecticut | EnergyAtlasUSA