Power Plants in Connecticut
Bywatts lists 83 power plants in Connecticut.
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.
Connecticut counties ranked by modeled catastrophe exposure
| County | Exposure score | Band | Leading peril | FEMA rating | Insurability signal |
|---|---|---|---|---|---|
| Greater Bridgeport Planning Region | 2.4 of 5 | Moderate | Hurricane | Relatively High | Standard |
| South Central Connecticut Planning Region | 2.3 of 5 | Moderate | Hurricane | Relatively High | Standard |
| Southeastern Connecticut Planning Region | 2.1 of 5 | Moderate | Hurricane | Relatively High | Standard |
| Western Connecticut Planning Region | 2.0 of 5 | Moderate | Hurricane | Relatively High | Standard |
| Naugatuck Valley Planning Region | 1.9 of 5 | Moderate | Hurricane | Relatively High | Standard |
| Northeastern Connecticut Planning Region | 1.9 of 5 | Moderate | Hurricane | Relatively Moderate | Standard |
| Northwest Hills Planning Region | 1.8 of 5 | Low | Riverine flooding | Relatively Moderate | Standard |
| Lower Connecticut River Valley Planning Region | 1.7 of 5 | Low | Riverine flooding | Relatively Moderate | Standard |
| Capitol Planning Region | 1.5 of 5 | Low | Riverine flooding | Relatively High | Standard |
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
- FEMA rating, national percentile and events per year are reported by the FEMA National Risk Index for the county.
- Exposure score is derived by Bywatts as the national percentile of the county's modeled solar loss rate, so a 5 is the worst national quintile. Band and insurability signal are Bywatts screening outputs, not carrier decisions.
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.
| Plant | Fuel | Capacity (MW) | Operator |
|---|---|---|---|
| MILLSTONE | Nuclear | 2,163 | DOMINION NUCLEAR CONN INC |
| LAKE ROAD GENERATING PLANT | Natural Gas | 840 | LAKE ROAD GENERATING CO LP |
| MIDDLETOWN | Natural Gas | 786 | MIDDLETOWN POWER LLC |
| KLEEN ENERGY SYSTEMS PROJECT | Unknown | 693 | KLEEN ENERGY SYSTEMS, LLC |
| NEW HAVEN HARBOR | Oil | 642 | PSEG POWER CONNECTICUT LLC |
| BRIDGEPORT STATION | Coal | 582 | PSEG POWER CONNECTICUT LLC |
| MILFORD POWER PROJECT | Natural Gas | 578 | MILFORD POWER CO LLC |
| BRIDGEPORT ENERGY PROJECT | Natural Gas | 520 | BRIDGEPORT ENERGY LLC |
| MONTVILLE STATION | Oil | 495 | NRG MONTVILLE OPERATIONS INC |
| NRG NORWALK HARBOR | Oil | 343 | NORWALK POWER LLC |
| WALLINGFORD ENERGY | Natural Gas | 250 | WALLINGFORD ENERGY LLC |
| GENCONN DEVON LLC | Unknown | 242 | GENCONN DEVON LLC |
| GENCONN MIDDLETOWN LLC | Unknown | 242 | GENCONN MIDDLETOWN LLC |
| DEVON STATION | Oil | 223 | DEVON POWER LLC |
| SOUTH MEADOW | Oil | 167 | NAES CORP |
| COS COB | Oil | 115 | CONNECTICUT JET POWER LLC |
| WATERBURY GENERATION | Natural Gas | 96 | FIRSTLIGHT POWER RESOURCES SERVICES LLC |
| CT RESOURCE REC AUTHORITY FACILITY | Biomass | 90 | NAES CORP |
| A L PIERCE | Natural Gas | 84 | CONNECTICUT MUN ELEC ENGY COOP |
| CAPITAL DISTRICT ENERGY CENTER | Natural Gas | 78 | MAXIM POWER (USA) INC |
| ALGONQUIN WINDSOR LOCKS | Natural Gas | 71 | ALGONQUIN WINDSOR LOCKS LLC |
| WATERSIDE POWER, LLC | Oil | 70 | WATERSIDE POWER, LLC |
| WHEELABRATOR BRIDGEPORT | Biomass | 67 | WHEELABRATOR ENVIRONMENTAL SYSTEMS |
| PFIZER GROTON PLANT | Natural Gas | 40 | PFIZER INC |
| SHEPAUG | Hydro | 37 | FIRSTLIGHT POWER RESOURCES SERVICES LLC |
| KIMBERLY CLARK-UNIT 1,2,3 | Unknown | 36 | KIMBERLY-CLARK CORPORATION |
| EXETER ENERGY LP | Biomass | 31 | REENERGY STERLING CT LP |
| ROCKY RIVER | Hydro | 31 | FIRSTLIGHT POWER RESOURCES SERVICES LLC |
| STEVENSON | Hydro | 31 | FIRSTLIGHT POWER RESOURCES SERVICES LLC |
| PRATT & WHITNEY | Natural Gas | 26 | UNITED TECHNOLOGIES |
| UCONN COGEN FACILITY | Unknown | 26 | UNIVERSITY OF CONNECTICUT |
| BRANFORD | Oil | 22 | CONNECTICUT JET POWER LLC |
| FRANKLIN DRIVE | Oil | 22 | CONNECTICUT JET POWER LLC |
| TORRINGTON TERMINAL | Oil | 22 | CONNECTICUT JET POWER LLC |
| TUNNEL | Oil | 21 | FIRSTLIGHT POWER RESOURCES SERVICES LLC |
| VERSAILLES MILL | Natural Gas | 20 | FUSION PAPERBOARD CONNECTICUT LLC |
| NORTH MAIN STREET | Oil | 19 | CITY OF NORWICH - (CT) |
| COVANTA SOUTHEASTERN CONNECTICUT COMPANY | Biomass | 17 | COVANTA SOUTHEASTERN CONNECTICUT COMPANY |
| COVANTA BRISTOL ENERGY | Biomass | 16 | COVANTA BRISTOL INC |
| RAND WHITNEY CHP PLANT | Unknown | 15 | RAND WHITNEY CONTAINERBOARD L.P. |
| WHEELABRATOR LISBON | Biomass | 15 | WHEELABRATOR ENVIRONMENTAL SYSTEMS |
| FOXWOODS COGEN | Unknown | 13 | FOXWOODS RESORT CASINO |
| COVANTA WALLINGFORD ENERGY | Biomass | 11 | COVANTA PROJECTS LP |
| HARTFORD HOSPITAL COGENERATION | Natural Gas | 10 | HARTFORD STEAM CO |
| FORT HILL 1, 2, 3 & 4 | Unknown | 10 | CONNECTICUT MUN ELEC ENGY COOP |
| FALLS VILLAGE | Hydro | 9 | FIRSTLIGHT POWER RESOURCES SERVICES LLC |
| DERBY HYDRO | Hydro | 9 | MCCALLUM ENTERPRISES I LP |
| RAINBOW | Hydro | 8 | FARMINGTON RIVER POWER COMPANY |
| BULLS BRIDGE | Hydro | 7 | FIRSTLIGHT POWER RESOURCES SERVICES LLC |
| NORDEN 1-3 | Unknown | 6 | THIRD TAXING DISTRICT OF NORWALK |
| BRADLEY ENERGY CENTER | Unknown | 6 | AMERESCO SELECT INC |
| JOHN STREET 1, 3, 4 & 5 | Oil | 5 | CONNECTICUT MUN ELEC ENGY COOP |
| BRIDGE STREET 1 & 2 | Unknown | 5 | CONNECTICUT MUN ELEC ENGY COOP |
| GARY COURT 1 & 2 | Unknown | 5 | CONNECTICUT MUN ELEC ENGY COOP |
| LEBANON PINES 1 & 2 | Unknown | 5 | CONNECTICUT MUN ELEC ENGY COOP |
| LNG 1 & 2 | Unknown | 5 | CONNECTICUT MUN ELEC ENGY COOP |
| WATER TREATMENT 1 & 2 | Unknown | 5 | CONNECTICUT MUN ELEC ENGY COOP |
| FAIRFIELD UNIVERSITY CHP PLANT | Natural Gas | 5 | FAIRFIELD UNIVERSITY |
| DANBURY HOSPITAL COGEN PLANT | Unknown | 4 | DANBURY HOSPITAL |
| HSCO CHP | Natural Gas | 4 | HARTFORD STEAM CO |
| CCSU CO-GEN-STBY GEN | Unknown | 4 | CENTRAL CONNECTICUT STATE UNIVERSITY |
| GOODWIN HYDROELECTRIC | Hydro | 3 | METROPOLITAN DIST OF HARTFORD |
| CELLU TISSUE | Unknown | 3 | CELLU TISSUE LLC |
| COLEBROOK HYDROELECTRIC | Hydro | 3 | METROPOLITAN DIST OF HARTFORD |
| UNCASVILLE MILL | Unknown | 3 | ROCKTENN-UNCASVILLE |
| MM HARTFORD ENERGY | Biomass | 3 | MM HARTFORD ENERGY LLC |
| JEWETT CITY 1 | Unknown | 3 | CONNECTICUT MUN ELEC ENGY COOP |
| QUINEBAUG LOWER PROJECT | Hydro | 3 | QUINEBAUG ASSOCIATES LLC |
| NEW MILFORD GAS RECOVERY | Biomass | 2 | WM RENEWABLE ENERGY LLC |
| WESLEYAN UNIVERSITY COGEN 1 | Unknown | 2 | WESLEYAN UNIVERSITY |
| KINNEYTOWN NEW OLD | Hydro | 2 | KINNEYTOWN HYDRO CO INC |
| NORWICH WWTP | Unknown | 2 | CITY OF NORWICH - (CT) |
| SCOTLAND | Hydro | 2 | FIRSTLIGHT POWER RESOURCES SERVICES LLC |
| CONNECTICUT VALLEY HOSPITAL PLANT | Unknown | 2 | CONNECTICUT VALLEY HOSPITAL |
| TAFTVILLE | Hydro | 2 | FIRSTLIGHT POWER RESOURCES SERVICES LLC |
| CCSU FUEL CELL PROJECT | Unknown | 1 | NEW BRITAIN RENEWABLE ENERGY, LLC |
| TENTH STREET | Hydro | 1 | CITY OF NORWICH - (CT) |
| CJTS ENERGY CENTER | Unknown | 1 | AMERESCO SELECT INC |
| SOUTH NORWALK ELECTRIC | Unknown | 1 | CITY OF SOUTH NORWALK - (CT) |
| AES THAMES | Coal | · | AES THAMES LLC |
| CPV TOWANTIC ENERGY CENTER | Unknown | · | CPV TOWANTIC, LLC |
| CYTEC 1, 2 & 3 | Oil | · | APEX POWER CONTRACTING AND CONSULTING |
| PLAINFIELD RENEWABLE ENERGY LLC | Unknown | · | PLAINFIELD RENEWABLE ENERGY, LLC |