Power Plants in Connecticut

Bywatts lists 83 power plants in Connecticut.

83Plants
83Shown this page
10.1 GWTotal capacity

View Connecticut on the map

Plants by fuel type
Connecticut plants by fuelUnknown28Natural Gas15Oil14Hydro14Biomass9Coal2Nuclear1

Weather peril risk for Connecticut projects

9 Connecticut counties carry a FEMA National Risk Index hazard profile. Hurricane is the leading peril in 6 of them, and Greater Bridgeport Planning Region ranks highest for modeled catastrophe exposure at 2.4 of 5.

9Counties assessed
Greater Bridgeport Planning Region, 2.4 of 5Highest scoring county
HurricaneLeading peril
0Counties in the worst national hail quintile

Connecticut counties ranked by modeled catastrophe exposure

CountyExposure scoreBandLeading perilFEMA ratingInsurability signal
Greater Bridgeport Planning Region2.4 of 5ModerateHurricaneRelatively HighStandard
South Central Connecticut Planning Region2.3 of 5ModerateHurricaneRelatively HighStandard
Southeastern Connecticut Planning Region2.1 of 5ModerateHurricaneRelatively HighStandard
Western Connecticut Planning Region2.0 of 5ModerateHurricaneRelatively HighStandard
Naugatuck Valley Planning Region1.9 of 5ModerateHurricaneRelatively HighStandard
Northeastern Connecticut Planning Region1.9 of 5ModerateHurricaneRelatively ModerateStandard
Northwest Hills Planning Region1.8 of 5LowRiverine floodingRelatively ModerateStandard
Lower Connecticut River Valley Planning Region1.7 of 5LowRiverine floodingRelatively ModerateStandard
Capitol Planning Region1.5 of 5LowRiverine floodingRelatively HighStandard

What this means for insurance placement in Connecticut

0 of 9 assessed Connecticut counties flag as Constrained or Difficult on the modeled insurability signal, which is where percentage hail and named windstorm deductibles, and any sublimit discussion, tend to start. The signal is a screening output, not a carrier decision.

Score a Connecticut county for hail, wind and flood exposure in the weather risk calculator

Data source and vintage

Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level. The solar vulnerability layer that turns FEMA building loss into modeled solar loss was derived by Bywatts and revised on physical reasoning. It has not been reviewed by a practising underwriter.

PlantFuelCapacity (MW)Operator
MILLSTONENuclear2,163DOMINION NUCLEAR CONN INC
LAKE ROAD GENERATING PLANTNatural Gas840LAKE ROAD GENERATING CO LP
MIDDLETOWNNatural Gas786MIDDLETOWN POWER LLC
KLEEN ENERGY SYSTEMS PROJECTUnknown693KLEEN ENERGY SYSTEMS, LLC
NEW HAVEN HARBOROil642PSEG POWER CONNECTICUT LLC
BRIDGEPORT STATIONCoal582PSEG POWER CONNECTICUT LLC
MILFORD POWER PROJECTNatural Gas578MILFORD POWER CO LLC
BRIDGEPORT ENERGY PROJECTNatural Gas520BRIDGEPORT ENERGY LLC
MONTVILLE STATIONOil495NRG MONTVILLE OPERATIONS INC
NRG NORWALK HARBOROil343NORWALK POWER LLC
WALLINGFORD ENERGYNatural Gas250WALLINGFORD ENERGY LLC
GENCONN DEVON LLCUnknown242GENCONN DEVON LLC
GENCONN MIDDLETOWN LLCUnknown242GENCONN MIDDLETOWN LLC
DEVON STATIONOil223DEVON POWER LLC
SOUTH MEADOWOil167NAES CORP
COS COBOil115CONNECTICUT JET POWER LLC
WATERBURY GENERATIONNatural Gas96FIRSTLIGHT POWER RESOURCES SERVICES LLC
CT RESOURCE REC AUTHORITY FACILITYBiomass90NAES CORP
A L PIERCENatural Gas84CONNECTICUT MUN ELEC ENGY COOP
CAPITAL DISTRICT ENERGY CENTERNatural Gas78MAXIM POWER (USA) INC
ALGONQUIN WINDSOR LOCKSNatural Gas71ALGONQUIN WINDSOR LOCKS LLC
WATERSIDE POWER, LLCOil70WATERSIDE POWER, LLC
WHEELABRATOR BRIDGEPORTBiomass67WHEELABRATOR ENVIRONMENTAL SYSTEMS
PFIZER GROTON PLANTNatural Gas40PFIZER INC
SHEPAUGHydro37FIRSTLIGHT POWER RESOURCES SERVICES LLC
KIMBERLY CLARK-UNIT 1,2,3Unknown36KIMBERLY-CLARK CORPORATION
EXETER ENERGY LPBiomass31REENERGY STERLING CT LP
ROCKY RIVERHydro31FIRSTLIGHT POWER RESOURCES SERVICES LLC
STEVENSONHydro31FIRSTLIGHT POWER RESOURCES SERVICES LLC
PRATT & WHITNEYNatural Gas26UNITED TECHNOLOGIES
UCONN COGEN FACILITYUnknown26UNIVERSITY OF CONNECTICUT
BRANFORDOil22CONNECTICUT JET POWER LLC
FRANKLIN DRIVEOil22CONNECTICUT JET POWER LLC
TORRINGTON TERMINALOil22CONNECTICUT JET POWER LLC
TUNNELOil21FIRSTLIGHT POWER RESOURCES SERVICES LLC
VERSAILLES MILLNatural Gas20FUSION PAPERBOARD CONNECTICUT LLC
NORTH MAIN STREETOil19CITY OF NORWICH - (CT)
COVANTA SOUTHEASTERN CONNECTICUT COMPANYBiomass17COVANTA SOUTHEASTERN CONNECTICUT COMPANY
COVANTA BRISTOL ENERGYBiomass16COVANTA BRISTOL INC
RAND WHITNEY CHP PLANTUnknown15RAND WHITNEY CONTAINERBOARD L.P.
WHEELABRATOR LISBONBiomass15WHEELABRATOR ENVIRONMENTAL SYSTEMS
FOXWOODS COGENUnknown13FOXWOODS RESORT CASINO
COVANTA WALLINGFORD ENERGYBiomass11COVANTA PROJECTS LP
HARTFORD HOSPITAL COGENERATIONNatural Gas10HARTFORD STEAM CO
FORT HILL 1, 2, 3 & 4Unknown10CONNECTICUT MUN ELEC ENGY COOP
FALLS VILLAGEHydro9FIRSTLIGHT POWER RESOURCES SERVICES LLC
DERBY HYDROHydro9MCCALLUM ENTERPRISES I LP
RAINBOWHydro8FARMINGTON RIVER POWER COMPANY
BULLS BRIDGEHydro7FIRSTLIGHT POWER RESOURCES SERVICES LLC
NORDEN 1-3Unknown6THIRD TAXING DISTRICT OF NORWALK
BRADLEY ENERGY CENTERUnknown6AMERESCO SELECT INC
JOHN STREET 1, 3, 4 & 5Oil5CONNECTICUT MUN ELEC ENGY COOP
BRIDGE STREET 1 & 2Unknown5CONNECTICUT MUN ELEC ENGY COOP
GARY COURT 1 & 2Unknown5CONNECTICUT MUN ELEC ENGY COOP
LEBANON PINES 1 & 2Unknown5CONNECTICUT MUN ELEC ENGY COOP
LNG 1 & 2Unknown5CONNECTICUT MUN ELEC ENGY COOP
WATER TREATMENT 1 & 2Unknown5CONNECTICUT MUN ELEC ENGY COOP
FAIRFIELD UNIVERSITY CHP PLANTNatural Gas5FAIRFIELD UNIVERSITY
DANBURY HOSPITAL COGEN PLANTUnknown4DANBURY HOSPITAL
HSCO CHPNatural Gas4HARTFORD STEAM CO
CCSU CO-GEN-STBY GENUnknown4CENTRAL CONNECTICUT STATE UNIVERSITY
GOODWIN HYDROELECTRICHydro3METROPOLITAN DIST OF HARTFORD
CELLU TISSUEUnknown3CELLU TISSUE LLC
COLEBROOK HYDROELECTRICHydro3METROPOLITAN DIST OF HARTFORD
UNCASVILLE MILLUnknown3ROCKTENN-UNCASVILLE
MM HARTFORD ENERGYBiomass3MM HARTFORD ENERGY LLC
JEWETT CITY 1Unknown3CONNECTICUT MUN ELEC ENGY COOP
QUINEBAUG LOWER PROJECTHydro3QUINEBAUG ASSOCIATES LLC
NEW MILFORD GAS RECOVERYBiomass2WM RENEWABLE ENERGY LLC
WESLEYAN UNIVERSITY COGEN 1Unknown2WESLEYAN UNIVERSITY
KINNEYTOWN NEW OLDHydro2KINNEYTOWN HYDRO CO INC
NORWICH WWTPUnknown2CITY OF NORWICH - (CT)
SCOTLANDHydro2FIRSTLIGHT POWER RESOURCES SERVICES LLC
CONNECTICUT VALLEY HOSPITAL PLANTUnknown2CONNECTICUT VALLEY HOSPITAL
TAFTVILLEHydro2FIRSTLIGHT POWER RESOURCES SERVICES LLC
CCSU FUEL CELL PROJECTUnknown1NEW BRITAIN RENEWABLE ENERGY, LLC
TENTH STREETHydro1CITY OF NORWICH - (CT)
CJTS ENERGY CENTERUnknown1AMERESCO SELECT INC
SOUTH NORWALK ELECTRICUnknown1CITY OF SOUTH NORWALK - (CT)
AES THAMESCoal·AES THAMES LLC
CPV TOWANTIC ENERGY CENTERUnknown·CPV TOWANTIC, LLC
CYTEC 1, 2 & 3Oil·APEX POWER CONTRACTING AND CONSULTING
PLAINFIELD RENEWABLE ENERGY LLCUnknown·PLAINFIELD RENEWABLE ENERGY, LLC