Directory of Power Plants in Connecticut
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Plainfield Renewable Energy LLC | Plainfield Renewable Energy, LLC | Plainfield, CT | ISO New England (ISNE) | 233.8 GWh | Nov 2013 | Dec 2023 | Wood/Wood Waste Solids : 99.6% |
| Wind Colebrook South | Wind Colebrook South | Colebrook, CT | ISO New England (ISNE) | 10.7 GWh | Oct 2015 | Mar 2025 | Wind |
| Tunnel | FirstLight Power Resources Services LLC | Preston, CT | ISO New England (ISNE) | 11.9 GWh | Dec 1918 | Dec 2023 | Water : 98.2% Jet Fuel : 1.8% |
| Bulls Bridge | FirstLight Power Resources Services LLC | New Milford, CT | ISO New England (ISNE) | 41.8 GWh | Dec 1902 | Dec 2023 | Water |
| Quinebaug Lower Project | Quinebaug Associates LLC | Brooklyn, CT | ISO New England (ISNE) | 10.1 GWh | Mar 1990 | Dec 2023 | Water |
| Goodwin Hydroelectric | Metropolitan Dist of Hartford | W. Hartland, CT | ISO New England (ISNE) | 12.9 GWh | Mar 1986 | Dec 2023 | Water |
| Derby Hydro | McCallum Enterprises I LP | Shelton, CT | ISO New England (ISNE) | 9.3 GWh | Dec 1988 | Dec 2023 | Water |
| Tenth Street | City of Norwich - (CT) | Norwich, CT | ISO New England (ISNE) | 3.5 GWh | Apr 1967 | Dec 2023 | Water |
| Falls Village | FirstLight Power Resources Services LLC | Falls Village, CT | ISO New England (ISNE) | 52.1 GWh | Dec 1913 | Dec 2023 | Water |
| Rainbow (CT) | Farmington River Power Company | Windsor, CT | ISO New England (ISNE) | 22.3 GWh | Nov 1925 | Mar 2025 | Water |
| Stevenson | FirstLight Power Resources Services LLC | Monroe, CT | ISO New England (ISNE) | 111.2 GWh | Dec 1918 | Dec 2023 | Water |
| Scotland Dam | FirstLight Power Resources Services LLC | Windham, CT | ISO New England (ISNE) | 9.6 GWh | Dec 1936 | Dec 2023 | Water |
| Shepaug | FirstLight Power Resources Services LLC | Southbury, CT | ISO New England (ISNE) | 163.1 GWh | Dec 1954 | Dec 2023 | Water |
| Taftville | FirstLight Power Resources Services LLC | Taftville, CT | ISO New England (ISNE) | 4.7 GWh | Dec 1905 | Dec 2023 | Water |
| CMEEC - Bozrah | Tesla Inc. | Bozrah, CT | ISO New England (ISNE) | 3.1 GWh | Nov 2016 | Dec 2023 | Solar |
| Sydney Solar | Ecos Energy LLC | Hampton, CT | ISO New England (ISNE) | 3.1 GWh | May 2020 | Dec 2023 | Solar |
| Jackson Solar (CT) | Ecos Energy LLC | Griswold, CT | ISO New England (ISNE) | 1.6 GWh | Nov 2019 | Dec 2023 | Solar |
| Sherman Solar | Ecos Energy LLC | Griswold, CT | ISO New England (ISNE) | 1.6 GWh | Nov 2019 | Dec 2023 | Solar |
| DWW Solar ll | DWW Solar ll LLC | Simsbury, CT | ISO New England (ISNE) | 52.8 GWh | Nov 2019 | Mar 2025 | Solar |
| Manchester Community College North | Onyx Asset Services Group | Great Path, CT | ISO New England (ISNE) | 1.5 GWh | Sep 2018 | Dec 2023 | Solar |
| Manchester Community College East | Onyx Asset Services Group | Manchester, CT | ISO New England (ISNE) | 1.4 GWh | Sep 2018 | Dec 2023 | Solar |
| Dickinson Solar (CT) | Ecos Energy LLC | Hampton, CT | ISO New England (ISNE) | 3.0 GWh | May 2020 | Dec 2023 | Solar |
| ALDI DC 2 | EnterSolar | South Windsor, CT | ISO New England (ISNE) | 1.7 GWh | Jan 2018 | Dec 2023 | Solar |
| North Stonington Solar Center, LLC | Adapture Renewables, Inc. | North Stonington, CT | ISO New England (ISNE) | 30.9 GWh | Sep 2022 | Dec 2023 | Solar |
| Town of Branford | Tesla Inc. | Branford, CT | ISO New England (ISNE) | 1.5 GWh | May 2018 | Dec 2023 | Solar |
| Adams Solar | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.5 GWh | Feb 2018 | Dec 2023 | Solar |
| Hamilton Solar | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.5 GWh | Feb 2018 | Dec 2023 | Solar |
| Jefferson Solar | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.5 GWh | Dec 2017 | Dec 2023 | Solar |
| Wilson Solar | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.5 GWh | Feb 2018 | Dec 2023 | Solar |
| Franklin Solar | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.5 GWh | Feb 2018 | Dec 2023 | Solar |
| Woods Hill Solar | Woods Hill Solar, LLC | Pomfret, CT | ISO New England (ISNE) | 25.2 GWh | Nov 2018 | Mar 2025 | Solar |
| Barrett Farm Solar - Phase I | Onyx Asset Services Group | Thompson, CT | ISO New England (ISNE) | 2.9 GWh | Sep 2017 | Dec 2023 | Solar |
| Town of Rocky Hill PV CSG | Tesla Inc. | Rocky Hill, CT | ISO New England (ISNE) | 4.6 GWh | Feb 2018 | Dec 2023 | Solar |
| Canis Minor Solar Farm | LSE Canis Minor LLC | Barkhamsted, CT | ISO New England (ISNE) | 1.7 GWh | Nov 2016 | Dec 2023 | Solar |
| Canis Major Solar Farm | LSE Canis Major LLC | Suffield, CT | ISO New England (ISNE) | 3.5 GWh | Nov 2016 | Dec 2023 | Solar |
| Hartford Landfill Solar EGF | Materials Innovation Recycling Authority | Hartford, CT | ISO New England (ISNE) | 1.4 GWh | May 2014 | Dec 2023 | Solar |
| Stafford MS Ground Mount Community Solar | Town of Stafford - (CT) | Stafford, CT | ISO New England (ISNE) | 3.2 GWh | Jun 2016 | Dec 2023 | Solar |
| Platt Hill | LSE Pictor LLC | Winchester, CT | ISO New England (ISNE) | 3.7 GWh | Dec 2021 | Dec 2023 | Solar |
| CMEEC - Norwich Stott St Solar Hybrid | Tesla Inc. | Norwich, CT | ISO New England (ISNE) | 2.4 GWh | Nov 2016 | Dec 2023 | Solar |
| CMEEC - Navy NE Trident | Tesla Inc. | Groton, CT | ISO New England (ISNE) | 1.4 GWh | May 2017 | Dec 2023 | Solar |
| CMEEC - Polaris Park Solar Hybrid | Tesla Inc. | Gordon, CT | ISO New England (ISNE) | 4.9 GWh | Jul 2017 | Dec 2023 | Solar |
| CMEEC - Rogers Rd Solar | Tesla Inc. | Norwich, CT | ISO New England (ISNE) | 1.6 GWh | Jan 2017 | Dec 2023 | Solar |
| Conn Mun Electric Energy Coop | Tesla Inc. | Norwich, CT | ISO New England (ISNE) | 1.3 GWh | Nov 2016 | Dec 2023 | Solar |
| Quinebaug Solar | Quinebaug Solar, LLC | Canterbury, CT | ISO New England (ISNE) | 80.8 GWh | Nov 2021 | Mar 2025 | Solar |
| Norcap South | LSE Coma Berenices LLC | East Windsor, CT | ISO New England (ISNE) | 3.4 GWh | Nov 2017 | Dec 2023 | Solar |
| Emerald Gardens PKI, LLC | Emerald Gardens PKI, LLC | Shelton, CT | ISO New England (ISNE) | 2.2 GWh | Sep 2021 | Dec 2023 | Solar |
| Gravel Pit Solar, LLC | Gravel Pit Solar, LLC | East Windsor, CT | ISO New England (ISNE) | 7.0 GWh | - | Mar 2025 | Solar |
| Niagara Bottling - Bloomfield | Westbound Solar 3, LLC | Bloomfield, CT | ISO New England (ISNE) | 4.4 GWh | Oct 2022 | Dec 2023 | Solar |
| Burlington Solar 1 | DG Connecticut III, LLC | Burlington, CT | ISO New England (ISNE) | 5.1 GWh | Jan 2022 | Dec 2023 | Solar |
| Southington Solar One | DG Connecticut III, LLC | Southington, CT | ISO New England (ISNE) | 8.7 GWh | Jan 2022 | Dec 2023 | Solar |
| East Windsor Solar One | DG Connecticut III, LLC | East Windsor, CT | ISO New England (ISNE) | 8.8 GWh | Nov 2021 | Dec 2023 | Solar |
| McHenry Solar | Ecos Energy LLC | Hampton, CT | ISO New England (ISNE) | 1.6 GWh | Sep 2021 | Dec 2023 | Solar |
| Barrow Solar | Ecos Energy LLC | Somers, CT | ISO New England (ISNE) | 3.3 GWh | May 2021 | Dec 2023 | Solar |
| Clinton Solar | Ecos Energy LLC | Griswold, CT | ISO New England (ISNE) | 1.6 GWh | Apr 2021 | Dec 2023 | Solar |
| Watertown Solar One, LLC | DG Connecticut III, LLC | Watertown, CT | ISO New England (ISNE) | 3.0 GWh | May 2021 | Dec 2023 | Solar |
| Bristol Solar One, LLC | DG Connecticut III, LLC | Bristol, CT | ISO New England (ISNE) | 2.9 GWh | Apr 2021 | Dec 2023 | Solar |
| Torrington Solar One, LLC | DG Connecticut III, LLC | Torrington, CT | ISO New England (ISNE) | 3.4 GWh | Feb 2021 | Dec 2023 | Solar |
| Wallingford Solar | Wallingford Renewable Energy, LLC | Wallingford, CT | ISO New England (ISNE) | 21.7 GWh | Aug 2021 | Dec 2023 | Solar |
| Becton Canaan | DG Northeast 1, LLC | North Canaan, CT | ISO New England (ISNE) | 3.3 GWh | Feb 2018 | Dec 2023 | Solar |
| Norcap North | LSE Canes Venatici LLC | East Windsor, CT | ISO New England (ISNE) | 3.4 GWh | Nov 2017 | Dec 2023 | Solar |
| Plainfield Solar 1 | Ecos Energy LLC | Plainfield, CT | ISO New England (ISNE) | 1.4 GWh | Dec 2019 | Dec 2023 | Solar |
| Few Solar | Ecos Energy LLC | Somers, CT | ISO New England (ISNE) | 1.6 GWh | Dec 2020 | Dec 2023 | Solar |
| Madison Solar | Ecos Energy LLC | Somers, CT | ISO New England (ISNE) | 1.6 GWh | Dec 2020 | Dec 2023 | Solar |
| Blair Solar | Ecos Energy LLC | Somers, CT | ISO New England (ISNE) | 1.6 GWh | Dec 2020 | Dec 2023 | Solar |
| Nutmeg Solar | Nutmeg Solar LLC | Enfield, CT | ISO New England (ISNE) | 33.4 GWh | Nov 2020 | Dec 2023 | Solar |
| Amazon BDL3 Solar Project | Solar Star Prime 1 LLC | New Haven, CT | ISO New England (ISNE) | 1.1 GWh | Sep 2019 | Dec 2023 | Solar |
| Park Solar | Ecos Energy LLC | Woodbridge, CT | ISO New England (ISNE) | 20.0 MWh | Nov 2023 | Dec 2023 | Solar |
| CP Middletown Solar II LLC | Green Street Power Partners | Middletown, CT | ISO New England (ISNE) | 1.7 GWh | Nov 2019 | Dec 2023 | Solar |
| CP Middletown Solar I LLC | Green Street Power Partners | Middletown, CT | ISO New England (ISNE) | 1.7 GWh | Nov 2019 | Dec 2023 | Solar |
| Corbin Russwin Phase 3 Berlin | EnterSolar | Berlin, CT | ISO New England (ISNE) | 1.7 GWh | Mar 2018 | Dec 2023 | Solar |
| Ticket Network South Windsor | EnterSolar | South Windsor, CT | ISO New England (ISNE) | 1.6 GWh | Apr 2018 | Dec 2023 | Solar |
| Powder Hill | LSE Delphinus LLC | Enfield, CT | ISO New England (ISNE) | 3.3 GWh | Nov 2020 | Dec 2023 | Solar |
| Plainfield Solar 2 | Ecos Energy LLC | Plainfield, CT | ISO New England (ISNE) | 1.5 GWh | Mar 2020 | Dec 2023 | Solar |
| Advance Stores Company, Inc | Tesla Inc. | Enfield, CT | ISO New England (ISNE) | 1.2 GWh | Oct 2014 | Dec 2023 | Solar |
| Somers Solar Center, LLC | Onward Energy | Somers, CT | ISO New England (ISNE) | 7.9 GWh | Nov 2013 | Dec 2023 | Solar |
| Antares-GRE 314 East Lyme LLC | MN8 Energy LLC | East Lyme, CT | ISO New England (ISNE) | 3.7 GWh | May 2014 | Mar 2025 | Solar |
| Fusion Solar Center LLC | Fusion Solar Centre, L.L.C | Baltic, CT | ISO New England (ISNE) | 40.0 GWh | Feb 2018 | Mar 2025 | Solar |
| Montville Station | NRG Montville Operations Inc | Uncasville, CT | ISO New England (ISNE) | 36.2 GWh | Dec 1953 | Dec 2023 | Residual Fuel Oil : 65.3% Natural Gas : 33.4% Distillate Fuel Oil : 1.3% |
| Millstone | Dominion Energy Nuclear Conn Inc | Waterford, CT | ISO New England (ISNE) | 17.1 TWh | Nov 1975 | Mar 2025 | Nuclear |
| Covanta Bristol Energy | Covanta Bristol Inc | Bristol, CT | ISO New England (ISNE) | 108.5 GWh | Nov 1987 | Mar 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) | 460.4 GWh | Jun 1988 | Mar 2025 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wheelabrator Lisbon | Wheelabrator Environmental Systems | Lisbon, CT | ISO New England (ISNE) | 98.6 GWh | Sep 1995 | Mar 2025 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Covanta Southeastern Connecticut Company | Covanta Southeastern Connecticut Company | Preston, CT | ISO New England (ISNE) | 112.2 GWh | Nov 1991 | Mar 2025 | Non-biogenic Municipal Solid Waste : 54.2% Biogenic Municipal Solid Waste : 44.4% Distillate Fuel Oil : 1.4% |
| Sikorsky Aircraft CHP | Sikorsky Aircraft Corporation | Stratford, CT | ISO New England (ISNE) | 64.3 GWh | May 2010 | Dec 2023 | Natural Gas : 99.9% |
| Algonquin Windsor Locks | Algonquin Windsor Locks LLC | Windsor Locks, CT | ISO New England (ISNE) | 120.5 GWh | Dec 1989 | Mar 2025 | Natural Gas : 99.9% |
| Hartford Hospital Cogeneration | Cartier Energy, LLC | Hartford, CT | ISO New England (ISNE) | 43.8 GWh | Jun 1988 | Dec 2023 | Natural Gas : 99.8% |
| Waterbury Generation | Engie North America | Waterbury, CT | ISO New England (ISNE) | 40.1 GWh | May 2009 | Dec 2023 | Natural Gas : 99.7% |
| Kleen Energy Systems Project | Kleen Energy Systems, LLC | Middletown, CT | ISO New England (ISNE) | 3.0 TWh | Jun 2011 | Mar 2025 | Natural Gas : 99.2% Distillate Fuel Oil : 0.8% |
| UCONN Cogen Facility | University of Connecticut | Storrs, CT | ISO New England (ISNE) | 123.5 GWh | Feb 2006 | Mar 2025 | Natural Gas : 98.9% Distillate Fuel Oil : 1.1% |
| Bridgeport Station | Generation Bridge II Connecticut, LLC | Bridgeport, CT | ISO New England (ISNE) | 3.5 TWh | Jul 1961 | Mar 2025 | Natural Gas : 98.6% Distillate Fuel Oil : 1.4% |
| Pfizer Groton Plant | Pfizer Inc | Groton, CT | ISO New England (ISNE) | 80.2 GWh | Dec 1947 | Mar 2025 | Natural Gas : 94.7% Distillate Fuel Oil : 5.3% |
| UI RCP Bridgeport Seaside | United Illuminating Co | Bridgeport, CT | ISO New England (ISNE) | 19.9 GWh | Oct 2015 | Mar 2025 | Natural Gas : 88.4% Solar : 11.6% |
| Middletown | Middletown Power LLC | Middletown, CT | ISO New England (ISNE) | 169.8 GWh | Sep 1958 | Dec 2023 | Natural Gas : 79.3% Residual Fuel Oil : 20.7% |
| IKEA New Haven Rooftop PV & Fuel Cell | IKEA Property Inc | New Haven, CT | ISO New England (ISNE) | 1.8 GWh | Jun 2012 | Dec 2023 | Natural Gas : 67.0% Solar : 33.0% |
| New Haven Harbor | Generation Bridge II Connecticut, LLC | New Haven, CT | ISO New England (ISNE) | 44.9 GWh | Jun 1975 | Feb 2025 | Natural Gas : 53.7% Residual Fuel Oil : 33.6% Kerosene : 10.8% Distillate Fuel Oil : 1.9% |
| Fairfield University CHP Plant | Fairfield University | Fairfield, CT | ISO New England (ISNE) | 25.3 GWh | Sep 2007 | Dec 2023 | Natural Gas |
| Pratt & Whitney | United Technologies | East Hartford, CT | ISO New England (ISNE) | 91.7 GWh | Dec 1991 | Mar 2025 | Natural Gas |
| FDX010.0 FedEx Fuel Cell | 2016 ESA Project Company, LLC | Middletown, CT | ISO New England (ISNE) | 7.1 GWh | Aug 2018 | Dec 2023 | Natural Gas |
| Medtronic - New Haven | Bloom Energy | North Haven, CT | ISO New England (ISNE) | 14.0 GWh | Sep 2020 | Dec 2023 | Natural Gas |
| HSCo CHP | Cartier Energy, LLC | Hartford, CT | ISO New England (ISNE) | 26.6 GWh | Sep 2009 | Dec 2023 | Natural Gas |
Browse Power Plants By Connecticut Counties
Figures are based on March 2025 generation numbers.| County | State Rank | Active Plants | Mar 2025 Generation |
|---|---|---|---|
| Northwest Hills Planning Region, CT | # 9 | 15 | 92.9 GWh |
| Western Connecticut Planning Region, CT | # 8 | 14 | 293.8 GWh |
| Capitol Planning Region, CT | # 7 | 50 | 659.5 GWh |
| Lower Connecticut River Valley Planning Region, CT | # 6 | 15 | 3.3 TWh |
| South Central Connecticut Planning Region, CT | # 5 | 23 | 4.1 TWh |
| County | State Rank | Active Plants | Mar 2025 Generation |
|---|---|---|---|
| Naugatuck Valley Planning Region, CT | # 4 | 13 | 5.9 TWh |
| Northeastern Connecticut Planning Region, CT | # 3 | 17 | 6.2 TWh |
| Greater Bridgeport Planning Region, CT | # 2 | 10 | 7.1 TWh |
| Southeastern Connecticut Planning Region, CT | # 1 | 50 | 18.0 TWh |