Directory of Power Plants in Connecticut
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Plainfield Solar 2 | Ecos Energy LLC | Plainfield, CT | ISO New England (ISNE) | 1.5 GWh | Mar 2020 | Dec 2024 | Solar |
| Derby Fuel Cell | Derby Fuel Cell LLC | Derby, CT | ISO New England (ISNE) | 105.9 GWh | Dec 2023 | Dec 2024 | Natural Gas |
| ALDI DC 2 | Powerflex | South Windsor, CT | ISO New England (ISNE) | 1.4 GWh | Jan 2018 | Dec 2024 | Solar |
| Manchester Community College East | Onyx Asset Services Group | Manchester, CT | ISO New England (ISNE) | 1.5 GWh | Sep 2018 | Dec 2024 | Solar |
| Manchester Community College North | Onyx Asset Services Group | Great Path, CT | ISO New England (ISNE) | 1.5 GWh | Sep 2018 | Dec 2024 | Solar |
| DWW Solar ll | DWW Solar ll LLC | Simsbury, CT | ISO New England (ISNE) | 51.8 GWh | Nov 2019 | Sep 2025 | Solar |
| Sherman Solar | Ecos Energy LLC | Griswold, CT | ISO New England (ISNE) | 1.4 GWh | Nov 2019 | Dec 2024 | Solar |
| Jackson Solar (CT) | Ecos Energy LLC | Griswold, CT | ISO New England (ISNE) | 1.4 GWh | Nov 2019 | Dec 2024 | Solar |
| Sydney Solar | Ecos Energy LLC | Hampton, CT | ISO New England (ISNE) | 2.9 GWh | May 2020 | Dec 2024 | Solar |
| Dickinson Solar (CT) | Ecos Energy LLC | Hampton, CT | ISO New England (ISNE) | 2.9 GWh | May 2020 | Dec 2024 | Solar |
| Becton Canaan | DG Northeast 1, LLC | North Canaan, CT | ISO New England (ISNE) | 3.3 GWh | Feb 2018 | Dec 2024 | Solar |
| Digital Fairfield | Bloom Energy | Trumbull, CT | ISO New England (ISNE) | 10.1 GWh | May 2018 | Jun 2024 | Natural Gas |
| South Windsor Fuel Cell | South Energy Investments LLC | South Windsor, CT | ISO New England (ISNE) | 38.9 GWh | Feb 2020 | Dec 2024 | Natural Gas |
| Ticket Network South Windsor | Powerflex | South Windsor, CT | ISO New England (ISNE) | 1.6 GWh | Apr 2018 | Dec 2024 | Solar |
| Corbin Russwin Phase 3 Berlin | Powerflex | Berlin, CT | ISO New England (ISNE) | 1.7 GWh | Mar 2018 | Dec 2024 | Solar |
| CP Middletown Solar I LLC | Green Street Power Partners | Middletown, CT | ISO New England (ISNE) | 1.7 GWh | Nov 2019 | Dec 2024 | Solar |
| CP Middletown Solar II LLC | Green Street Power Partners | Middletown, CT | ISO New England (ISNE) | 1.7 GWh | Nov 2019 | Dec 2024 | Solar |
| UB Fuel Cell | UB Fuel Cell | Bridgeport, CT | ISO New England (ISNE) | 10.5 GWh | Mar 2015 | Dec 2023 | Natural Gas |
| Amazon BDL3 Solar Project | Solar Star Prime 1 LLC | New Haven, CT | ISO New England (ISNE) | 1.6 GWh | Sep 2019 | Dec 2024 | Solar |
| Nutmeg Solar | Nutmeg Solar LLC | Enfield, CT | ISO New England (ISNE) | 34.4 GWh | Nov 2020 | Dec 2024 | Solar |
| SR North Stonington | SR North Stonington, LLC | North Stonington, CT | ISO New England (ISNE) | 13.2 GWh | Feb 2024 | Dec 2024 | Solar |
| Naval Sub Base New London Fuel Cell | Groton Station Fuel Cell, LLC | Groton, CT | ISO New England (ISNE) | 43.6 GWh | Nov 2022 | Dec 2024 | Natural Gas |
| Wind Colebrook South | Wind Colebrook South | Colebrook, CT | ISO New England (ISNE) | 10.9 GWh | Oct 2015 | Sep 2025 | Wind |
| Stafford MS Ground Mount Community Solar | Town of Stafford - (CT) | Stafford, CT | ISO New England (ISNE) | 3.1 GWh | Jun 2016 | Dec 2024 | Solar |
| Hartford Landfill Solar EGF | Materials Innovation Recycling Authority | Hartford, CT | ISO New England (ISNE) | 1.2 GWh | May 2014 | Dec 2024 | Solar |
| Canis Major Solar Farm | LSE Canis Major LLC | Suffield, CT | ISO New England (ISNE) | 3.6 GWh | Nov 2016 | Dec 2024 | Solar |
| Canis Minor Solar Farm | LSE Canis Minor LLC | Barkhamsted, CT | ISO New England (ISNE) | 1.7 GWh | Nov 2016 | Dec 2023 | Solar |
| Town of Rocky Hill PV CSG | Tesla Inc. | Rocky Hill, CT | ISO New England (ISNE) | 5.1 GWh | Feb 2018 | Dec 2024 | Solar |
| Sikorsky Aircraft CHP | Sikorsky Aircraft Corporation | Stratford, CT | ISO New England (ISNE) | 53.1 GWh | May 2010 | Dec 2024 | Natural Gas : 99.8% |
| Barrett Farm Solar - Phase I | Onyx Asset Services Group | Thompson, CT | ISO New England (ISNE) | 2.7 GWh | Sep 2017 | Dec 2024 | Solar |
| Woods Hill Solar | Woods Hill Solar, LLC | Pomfret, CT | ISO New England (ISNE) | 25.2 GWh | Nov 2018 | Sep 2025 | Solar |
| Blair Solar | Ecos Energy LLC | Somers, CT | ISO New England (ISNE) | 1.6 GWh | Dec 2020 | Dec 2024 | Solar |
| Trinity College Fuel Cell | AEP Onsite Partners, LLC | Hartford, CT | ISO New England (ISNE) | 11.5 GWh | Jul 2018 | Dec 2024 | Natural Gas |
| IKEA New Haven Rooftop PV & Fuel Cell | IKEA Property Inc | New Haven, CT | ISO New England (ISNE) | 2.8 GWh | Jun 2012 | Dec 2024 | Natural Gas : 73.1% Solar : 26.9% |
| Franklin Solar (CT) | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.5 GWh | Feb 2018 | Dec 2024 | Solar |
| Wilson Solar (CT) | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.5 GWh | Feb 2018 | Dec 2024 | Solar |
| Jefferson Solar (CT) | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.5 GWh | Dec 2017 | Dec 2024 | Solar |
| Hamilton Solar | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.5 GWh | Feb 2018 | Dec 2024 | Solar |
| Adams Solar | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.5 GWh | Feb 2018 | Dec 2024 | Solar |
| Town of Branford | Tesla Inc. | Branford, CT | ISO New England (ISNE) | 1.6 GWh | May 2018 | Dec 2024 | Solar |
| North Stonington Solar Center, LLC | Adapture Renewables, Inc. | North Stonington, CT | ISO New England (ISNE) | 30.5 GWh | Sep 2022 | Dec 2024 | Solar |
| Powder Hill | LSE Delphinus LLC | Enfield, CT | ISO New England (ISNE) | 3.3 GWh | Nov 2020 | Dec 2024 | Solar |
| Generate Colchester Fuel Cells, LLC | Generate Colchester Fuel Cells, LLC | Colchester, CT | ISO New England (ISNE) | 76.7 GWh | Sep 2021 | Dec 2024 | Natural Gas |
| Connecticut College | Bloom Energy | New London, CT | ISO New England (ISNE) | 9.1 GWh | Aug 2019 | Dec 2024 | Natural Gas |
| Niagara Bottling - Bloomfield | Westbound Solar 3, LLC | Bloomfield, CT | ISO New England (ISNE) | 4.5 GWh | Oct 2022 | Dec 2024 | Solar |
| Gravel Pit Solar, LLC | Gravel Pit Solar, LLC | East Windsor, CT | ISO New England (ISNE) | 112.8 GWh | - | Sep 2025 | Solar |
| Emerald Gardens PKI, LLC | Emerald Gardens PKI, LLC | Shelton, CT | ISO New England (ISNE) | 2.1 GWh | Sep 2021 | Dec 2024 | Solar |
| Yale New Haven - New London | Bloom Energy | New London, CT | ISO New England (ISNE) | 14.6 GWh | Aug 2022 | Dec 2024 | Natural Gas |
| Norcap South | LSE Coma Berenices LLC | East Windsor, CT | ISO New England (ISNE) | 3.6 GWh | Nov 2017 | Dec 2024 | Solar |
| Norcap North | LSE Canes Venatici LLC | East Windsor, CT | ISO New England (ISNE) | 3.5 GWh | Nov 2017 | Dec 2024 | Solar |
| Park Solar | Ecos Energy LLC | Woodbridge, CT | ISO New England (ISNE) | 866.0 MWh | Nov 2023 | Dec 2024 | Solar |
| Burlington Solar 1 | DG Connecticut III, LLC | Burlington, CT | ISO New England (ISNE) | 5.6 GWh | Jan 2022 | Dec 2024 | Solar |
| Platt Hill | LSE Pictor LLC | Winchester, CT | ISO New England (ISNE) | 2.4 GWh | Dec 2021 | Dec 2024 | Solar |
| Sand Road | LSE Phoenix LLC | North Canaan, CT | ISO New England (ISNE) | 3.5 GWh | Oct 2021 | Dec 2024 | Solar |
| Norfolk Landfill Solar Project | NJR Clean Energy Ventures Corporation | Norfolk, CT | ISO New England (ISNE) | 494.0 MWh | Nov 2024 | Dec 2024 | Solar |
| Raffia Road Solar Project | NJR Clean Energy Ventures Corporation | Enfield, CT | ISO New England (ISNE) | 11.0 MWh | Nov 2024 | Dec 2024 | Solar |
| Bunce | LSE Indus LLC | North Canaan, CT | ISO New England (ISNE) | 3.3 GWh | Mar 2022 | Dec 2024 | Solar |
| Dynamic Energy CT STAG | Milford Pepes Farm Road Solar LLC | Milford, CT | ISO New England (ISNE) | 2.5 GWh | Jul 2023 | Dec 2024 | Solar |
| Ellington - 277 Sadds Mill | Onyx Asset Services Group | Ellington, CT | ISO New England (ISNE) | 2.8 GWh | Feb 2024 | Dec 2024 | Solar |
| CP East Hampton I & II Solar | NJR Clean Energy Ventures Corporation | East Hampton, CT | ISO New England (ISNE) | 3.3 GWh | Jan 2021 | Dec 2024 | Solar |
| Stamford Health Tully Health Center | Stamford Health Tully Health Center | Stamford, CT | ISO New England (ISNE) | 5.0 GWh | Apr 2002 | Dec 2024 | Natural Gas |
| FedEx Middletown | VCP Realty, LLC | Middletown, CT | ISO New England (ISNE) | 151.0 MWh | Oct 2024 | Dec 2024 | Solar |
| Madison Solar (CT) | Ecos Energy LLC | Somers, CT | ISO New England (ISNE) | 1.7 GWh | Dec 2020 | Dec 2024 | Solar |
| Few Solar | Ecos Energy LLC | Somers, CT | ISO New England (ISNE) | 1.6 GWh | Dec 2020 | Dec 2024 | Solar |
| Plainfield Solar 1 | Ecos Energy LLC | Plainfield, CT | ISO New England (ISNE) | 1.5 GWh | Dec 2019 | Dec 2024 | Solar |
| Quinebaug Solar | Quinebaug Solar, LLC | Canterbury, CT | ISO New England (ISNE) | 80.6 GWh | Nov 2021 | Sep 2025 | Solar |
| Wallingford Solar | Wallingford Renewable Energy, LLC | Wallingford, CT | ISO New England (ISNE) | 20.9 GWh | Aug 2021 | Dec 2024 | Solar |
| FDX010.0 FedEx Fuel Cell | 2016 ESA Project Company, LLC | Middletown, CT | ISO New England (ISNE) | 7.9 GWh | Aug 2018 | Dec 2024 | Natural Gas |
| Torrington Solar One, LLC | DG Connecticut III, LLC | Torrington, CT | ISO New England (ISNE) | 3.2 GWh | Feb 2021 | Dec 2024 | Solar |
| Bristol Solar One, LLC | DG Connecticut III, LLC | Bristol, CT | ISO New England (ISNE) | 4.9 GWh | Apr 2021 | Dec 2024 | Solar |
| Watertown Solar One, LLC | DG Connecticut III, LLC | Watertown, CT | ISO New England (ISNE) | 2.9 GWh | May 2021 | Dec 2024 | Solar |
| CMEEC - Norwich Stott St Solar Hybrid | Tesla Inc. | Norwich, CT | ISO New England (ISNE) | 4.0 GWh | Nov 2016 | Dec 2024 | Solar |
| Enfield Solar One | Enfield Solar One, LLC | Hartford, CT | ISO New England (ISNE) | 5.5 GWh | Mar 2024 | Dec 2024 | Solar |
| North Haven Solar One | North Haven Solar One, LLC | North Haven, CT | ISO New England (ISNE) | 2.5 GWh | Feb 2024 | Dec 2024 | Solar |
| Clinton Solar | Ecos Energy LLC | Griswold, CT | ISO New England (ISNE) | 1.7 GWh | Apr 2021 | Dec 2024 | Solar |
| Medtronic - New Haven 2 | Bloom Energy | North Haven, CT | ISO New England (ISNE) | 15.7 GWh | Sep 2020 | Dec 2024 | Natural Gas |
| Medtronic - New Haven | Bloom Energy | North Haven, CT | ISO New England (ISNE) | 2.2 GWh | Sep 2020 | Dec 2024 | Natural Gas |
| Barrow Solar | Ecos Energy LLC | Somers, CT | ISO New England (ISNE) | 3.3 GWh | May 2021 | Dec 2024 | Solar |
| McHenry Solar | Ecos Energy LLC | Hampton, CT | ISO New England (ISNE) | 1.6 GWh | Sep 2021 | Dec 2024 | Solar |
| East Windsor Solar One | DG Connecticut III, LLC | East Windsor, CT | ISO New England (ISNE) | 8.5 GWh | Nov 2021 | Dec 2024 | Solar |
| Southington Solar One | DG Connecticut III, LLC | Southington, CT | ISO New England (ISNE) | 8.8 GWh | Jan 2022 | Dec 2024 | Solar |
| Milford Power Project | Milford Power Co LLC | Milford, CT | ISO New England (ISNE) | 3.6 TWh | Jan 2004 | Sep 2025 | Natural Gas |
| New Milford Gas Recovery | WM Renewable Energy LLC | New Milford, CT | ISO New England (ISNE) | 4.7 GWh | Apr 2008 | Dec 2024 | Landfill Gas |
| Covanta Bristol Energy | Covanta Bristol Inc | Bristol, CT | ISO New England (ISNE) | 107.8 GWh | Nov 1987 | Sep 2025 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wheelabrator Bridgeport | Wheelabrator Environmental Systems | Bridgeport, CT | ISO New England (ISNE) | 473.1 GWh | Jun 1988 | Sep 2025 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Hartford Hospital Cogeneration | Cartier Energy, LLC | Hartford, CT | ISO New England (ISNE) | 39.5 GWh | Jun 1988 | Dec 2024 | Natural Gas |
| Pfizer Groton Plant | Pfizer Inc | Groton, CT | ISO New England (ISNE) | 77.5 GWh | Dec 1947 | Sep 2025 | Natural Gas : 91.4% Distillate Fuel Oil : 8.6% |
| Goodwin Hydroelectric | Metropolitan Dist of Hartford | W. Hartland, CT | ISO New England (ISNE) | 8.9 GWh | Mar 1986 | Dec 2024 | Water |
| Pratt & Whitney | United Technologies | East Hartford, CT | ISO New England (ISNE) | 81.9 GWh | Dec 1991 | Sep 2025 | Natural Gas |
| Wheelabrator Lisbon | Wheelabrator Environmental Systems | Lisbon, CT | ISO New England (ISNE) | 101.0 GWh | Sep 1995 | Sep 2025 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Bridgeport Energy Project | Bridgeport Energy LLC | Bridgeport, CT | ISO New England (ISNE) | 2.4 TWh | May 1998 | Sep 2025 | Natural Gas |
| Covanta Southeastern Connecticut Company | Covanta Southeastern Connecticut Company | Preston, CT | ISO New England (ISNE) | 113.3 GWh | Nov 1991 | Sep 2025 | Non-biogenic Municipal Solid Waste : 54.1% Biogenic Municipal Solid Waste : 44.2% Distillate Fuel Oil : 1.7% |
| Lake Road Generating Plant | Lake Road Generating Co LP | Dayville, CT | ISO New England (ISNE) | 5.8 TWh | Feb 2002 | Sep 2025 | Natural Gas |
| Wallingford Energy | Wallingford Energy LLC | Wallingford, CT | ISO New England (ISNE) | 87.8 GWh | Jul 2001 | Dec 2024 | Natural Gas |
| Quinebaug Lower Project | Quinebaug Associates LLC | Brooklyn, CT | ISO New England (ISNE) | 6.4 GWh | Mar 1990 | Dec 2024 | Water |
| CPV Towantic Energy Center | CPV Towantic, LLC | Oxford, CT | ISO New England (ISNE) | 5.2 TWh | Apr 2018 | Sep 2025 | Natural Gas |
| Waterside Power, LLC | Waterside Power, LLC | Stamford, CT | ISO New England (ISNE) | 2.1 GWh | May 2003 | Dec 2024 | Distillate Fuel Oil |
| Waterbury Generation | Engie North America | Waterbury, CT | ISO New England (ISNE) | 43.8 GWh | May 2009 | Dec 2024 | Natural Gas : 99.8% |
| Kleen Energy Systems Project | Kleen Energy Systems, LLC | Middletown, CT | ISO New England (ISNE) | 3.1 TWh | Jun 2011 | Sep 2025 | Natural Gas : 99.3% Distillate Fuel Oil : 0.7% |
| Plainfield Renewable Energy LLC | Plainfield Renewable Energy, LLC | Plainfield, CT | ISO New England (ISNE) | 247.0 GWh | Nov 2013 | Oct 2024 | Wood/Wood Waste Solids : 99.5% Other Biomass Liquids : 0.5% |
Browse Power Plants By Connecticut Counties
Figures are based on September 2025 generation numbers.| County | State Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Northwest Hills Planning Region, CT | # 9 | 15 | 73.7 GWh |
| Western Connecticut Planning Region, CT | # 8 | 15 | 178.8 GWh |
| Capitol Planning Region, CT | # 7 | 56 | 761.3 GWh |
| Lower Connecticut River Valley Planning Region, CT | # 6 | 16 | 3.3 TWh |
| South Central Connecticut Planning Region, CT | # 5 | 23 | 3.9 TWh |
| County | State Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Naugatuck Valley Planning Region, CT | # 4 | 17 | 5.6 TWh |
| Northeastern Connecticut Planning Region, CT | # 3 | 17 | 6.2 TWh |
| Greater Bridgeport Planning Region, CT | # 2 | 10 | 6.7 TWh |
| Southeastern Connecticut Planning Region, CT | # 1 | 51 | 17.1 TWh |