Directory of Power Plants in Connecticut
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Benz Solar 2 | Ecos Energy LLC | Ansonia, CT | ISO New England (ISNE) | 1.3 GWh | Feb 2025 | Dec 2025 | Solar |
| Benz Solar 1 | Ecos Energy LLC | Ansonia, CT | ISO New England (ISNE) | 1.3 GWh | Feb 2025 | Dec 2025 | Solar |
| Fusion Solar Center LLC | Fusion Solar Centre, L.L.C | Baltic, CT | ISO New England (ISNE) | 37.8 GWh | Feb 2018 | May 2026 | Solar |
| Corbin Russwin Phase 3 Berlin | Powerflex | Berlin, CT | ISO New England (ISNE) | 1.6 GWh | Mar 2018 | Dec 2025 | Solar |
| Niagara Bottling - Bloomfield | Westbound Solar 3, LLC | Bloomfield, CT | ISO New England (ISNE) | 4.0 GWh | Oct 2022 | Dec 2025 | Solar |
| Pepperidge Farm Bloomfield | Pepperidge Farm, Inc.- Bloomfield | Bloomfield, CT | ISO New England (ISNE) | 15.5 GWh | Jul 2008 | Dec 2024 | Natural Gas |
| CMEEC - Bozrah | Tesla Inc. | Bozrah, CT | ISO New England (ISNE) | 3.1 GWh | Nov 2016 | Dec 2025 | Solar |
| Town of Branford | Tesla Inc. | Branford, CT | ISO New England (ISNE) | 1.5 GWh | May 2018 | Dec 2025 | Solar |
| Branford | Connecticut Jet Power LLC | Branford, CT | ISO New England (ISNE) | 288.0 MWh | Oct 1967 | Dec 2025 | Kerosene |
| UB Fuel Cell | UB Fuel Cell | Bridgeport, CT | ISO New England (ISNE) | 10.1 GWh | Mar 2015 | Dec 2025 | Natural Gas |
| Bridgeport Station | Generation Bridge II Connecticut, LLC | Bridgeport, CT | ISO New England (ISNE) | 3.2 TWh | Jul 1961 | May 2026 | Natural Gas : 84.6% Distillate Fuel Oil : 15.4% |
| Wheelabrator Bridgeport | Wheelabrator Environmental Systems | Bridgeport, CT | ISO New England (ISNE) | 429.8 GWh | Jun 1988 | May 2026 | 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) | 2.7 TWh | May 1998 | May 2026 | Natural Gas |
| UI RCP Bridgeport Seaside | United Illuminating Co | Bridgeport, CT | ISO New England (ISNE) | 17.5 GWh | Oct 2015 | May 2026 | Natural Gas : 84.7% Solar : 15.3% |
| Bridgeport Fuel Cell, LLC | Bridgeport Fuel Cell, LLC | Bridgeport, CT | ISO New England (ISNE) | 90.4 GWh | Nov 2013 | Dec 2025 | Natural Gas |
| Covanta Bristol Energy | Covanta Bristol Inc | Bristol, CT | ISO New England (ISNE) | 108.5 GWh | Nov 1987 | May 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Bristol Solar One, LLC | DG Connecticut III, LLC | Bristol, CT | ISO New England (ISNE) | 4.9 GWh | Apr 2021 | Dec 2025 | Solar |
| Quinebaug Lower Project | Quinebaug Associates LLC | Brooklyn, CT | ISO New England (ISNE) | 5.4 GWh | Mar 1990 | Dec 2025 | Water |
| Burlington Solar 1 | DG Connecticut III, LLC | Burlington, CT | ISO New England (ISNE) | 5.8 GWh | Jan 2022 | Dec 2025 | Solar |
| Quinebaug Solar | Quinebaug Solar, LLC | Canterbury, CT | ISO New England (ISNE) | 74.3 GWh | Nov 2021 | May 2026 | Solar |
| CTGB Maloney and Webster | TotalEnergies Renewables USA LLC | Cheshire, CT | ISO New England (ISNE) | 3.2 GWh | Jun 2025 | Dec 2025 | Solar |
| Generate Colchester Fuel Cells, LLC | Generate Colchester Fuel Cells, LLC | Colchester, CT | ISO New England (ISNE) | 72.4 GWh | Sep 2021 | Dec 2025 | Natural Gas |
| Wind Colebrook South | Wind Colebrook South | Colebrook, CT | ISO New England (ISNE) | 10.5 GWh | Oct 2015 | May 2026 | Wind |
| Danbury Hospital Cogen Plant | Danbury Hospital | Danbury, CT | ISO New England (ISNE) | 21.6 GWh | Oct 2011 | Dec 2025 | Natural Gas |
| Frito Lay Incorporated | Frito Lay Incorporated Dayville | Dayville, CT | ISO New England (ISNE) | 25.1 GWh | Feb 2009 | May 2026 | Natural Gas |
| Lake Road Generating Plant | Lake Road Generating Co LP | Dayville, CT | ISO New England (ISNE) | 5.9 TWh | Feb 2002 | May 2026 | Natural Gas |
| Derby Fuel Cell | Derby Fuel Cell LLC | Derby, CT | ISO New England (ISNE) | 110.3 GWh | Dec 2023 | Dec 2025 | Natural Gas |
| 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 |
| Pratt & Whitney | United Technologies | East Hartford, CT | ISO New England (ISNE) | 75.9 GWh | Dec 1991 | May 2026 | Natural Gas |
| Cellu Tissue | Dunn Paper East Hartford, LLC | East Hartford, CT | ISO New England (ISNE) | 11.7 GWh | Apr 2009 | May 2026 | Natural Gas |
| Antares-GRE 314 East Lyme LLC | MN8 Energy LLC | East Lyme, CT | ISO New England (ISNE) | 4.2 GWh | May 2014 | May 2026 | Solar |
| Norcap South | LSE Coma Berenices LLC | East Windsor, CT | ISO New England (ISNE) | 3.6 GWh | Nov 2017 | Dec 2025 | Solar |
| Norcap North | LSE Canes Venatici LLC | East Windsor, CT | ISO New England (ISNE) | 3.5 GWh | Nov 2017 | Dec 2024 | Solar |
| Gravel Pit Solar, LLC | Gravel Pit Solar, LLC | East Windsor, CT | ISO New England (ISNE) | 186.8 GWh | Jan 2025 | May 2026 | Solar |
| East Windsor Solar One | DG Connecticut III, LLC | East Windsor, CT | ISO New England (ISNE) | 6.5 GWh | Nov 2021 | Sep 2025 | Solar |
| East Windsor Solar Two | East Windsor Solar Two, LLC | East Windsor, CT | ISO New England (ISNE) | 749.0 MWh | Aug 2025 | Dec 2025 | Solar |
| East Windsor | NJR Clean Energy Ventures Corporation | East Windsor, CT | ISO New England (ISNE) | 869.0 MWh | Aug 2025 | Dec 2025 | Solar |
| Ellington - 277 Sadds Mill | Onyx Asset Services Group | Ellington, CT | ISO New England (ISNE) | 3.6 GWh | Feb 2024 | Dec 2025 | Solar |
| Advance Stores Company, Inc | Tesla Inc. | Enfield, CT | ISO New England (ISNE) | 1.0 GWh | Oct 2014 | Mar 2025 | Solar |
| Powder Hill | LSE Delphinus LLC | Enfield, CT | ISO New England (ISNE) | 3.3 GWh | Nov 2020 | Dec 2024 | Solar |
| Raffia Road Solar Project | NJR Clean Energy Ventures Corporation | Enfield, CT | ISO New England (ISNE) | 7.0 GWh | Nov 2024 | Dec 2025 | Solar |
| Nutmeg Solar | Nutmeg Solar LLC | Enfield, CT | ISO New England (ISNE) | 34.5 GWh | Nov 2020 | Dec 2025 | Solar |
| Fairfield University CHP Plant | Fairfield University | Fairfield, CT | ISO New England (ISNE) | 23.3 GWh | Sep 2007 | Dec 2025 | Natural Gas |
| Falls Village | FirstLight Power Resources Services LLC | Falls Village, CT | ISO New England (ISNE) | 25.7 GWh | Dec 1913 | Dec 2025 | Water |
| UDR Glastonbury Fuel Cell | UIL Distributed Resources, LLC | Glastonbury, CT | ISO New England (ISNE) | 15.8 GWh | Jan 2016 | Dec 2025 | Natural Gas |
| Glastonbury Solar One | NJR Clean Energy Ventures Corporation | Glastonbury, CT | ISO New England (ISNE) | 821.0 MWh | Aug 2025 | Dec 2025 | Solar |
| CMEEC - Polaris Park Solar Hybrid | Tesla Inc. | Gordon, CT | ISO New England (ISNE) | 4.5 GWh | Jul 2017 | Dec 2025 | Solar : 99.9% |
| Manchester Community College North | Onyx Asset Services Group | Great Path, CT | ISO New England (ISNE) | 1.5 GWh | Sep 2018 | Dec 2024 | Solar |
| Cos Cob | Connecticut Jet Power LLC | Greenwich, CT | ISO New England (ISNE) | 1.6 GWh | Aug 1969 | Dec 2025 | Kerosene |
| Sherman Solar | Ecos Energy LLC | Griswold, CT | ISO New England (ISNE) | 1.6 GWh | Nov 2019 | Dec 2025 | Solar |
| Jackson Solar (CT) | Ecos Energy LLC | Griswold, CT | ISO New England (ISNE) | 1.6 GWh | Nov 2019 | Dec 2025 | Solar |
| Clinton Solar | Ecos Energy LLC | Griswold, CT | ISO New England (ISNE) | 1.7 GWh | Apr 2021 | Dec 2025 | Solar |
| Subase Microgrid Project | Connecticut Mun Elec Engy Coop | Groton, CT | ISO New England (ISNE) | 29.6 GWh | Nov 2022 | Dec 2025 | Natural Gas |
| CMEEC - Navy NE Trident | Tesla Inc. | Groton, CT | ISO New England (ISNE) | 1.2 GWh | May 2017 | Dec 2025 | 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 |
| Water Treatment 1 & 2 | Connecticut Mun Elec Engy Coop | Groton, CT | ISO New England (ISNE) | 494.0 MWh | Sep 2010 | May 2026 | Distillate Fuel Oil |
| Gary Court 1 & 2 | Connecticut Mun Elec Engy Coop | Groton, CT | ISO New England (ISNE) | 381.0 MWh | Jun 2010 | Dec 2025 | Distillate Fuel Oil |
| Bridge Street 1 & 2 | Connecticut Mun Elec Engy Coop | Groton, CT | ISO New England (ISNE) | 452.0 MWh | Jun 2010 | Dec 2025 | Distillate Fuel Oil |
| Pfizer Groton Fuel Cell | Groton Fuel Cell 1 LLC | Groton, CT | ISO New England (ISNE) | 30.1 GWh | Sep 2016 | Dec 2024 | Natural Gas |
| Pfizer Groton Plant | Pfizer Inc | Groton, CT | ISO New England (ISNE) | 75.4 GWh | Dec 1947 | May 2026 | Natural Gas : 88.5% Distillate Fuel Oil : 11.5% |
| McHenry Solar | Ecos Energy LLC | Hampton, CT | ISO New England (ISNE) | 1.6 GWh | Sep 2021 | Dec 2025 | Solar |
| Sydney Solar | Ecos Energy LLC | Hampton, CT | ISO New England (ISNE) | 3.0 GWh | May 2020 | Dec 2025 | Solar |
| Dickinson Solar (CT) | Ecos Energy LLC | Hampton, CT | ISO New England (ISNE) | 1.5 GWh | May 2020 | Dec 2025 | Solar |
| Hartford Landfill Solar EGF | Materials Innovation Recycling Authority | Hartford, CT | ISO New England (ISNE) | 1.2 GWh | May 2014 | Dec 2024 | Solar |
| Trinity College Fuel Cell | Onsite Partners, LLC | Hartford, CT | ISO New England (ISNE) | 11.5 GWh | Jul 2018 | Dec 2024 | Natural Gas |
| Enfield Solar One | Enfield Solar One, LLC | Hartford, CT | ISO New England (ISNE) | 8.3 GWh | Mar 2024 | Dec 2025 | Solar |
| Hartford Hospital Cogeneration | Cartier Energy, LLC | Hartford, CT | ISO New England (ISNE) | 39.5 GWh | Jun 1988 | Dec 2024 | Natural Gas |
| HSCo CHP | Cartier Energy, LLC | Hartford, CT | ISO New England (ISNE) | 27.7 GWh | Sep 2009 | Dec 2025 | Natural Gas |
| Jewett City 1 | Connecticut Mun Elec Engy Coop | Jewett City, CT | ISO New England (ISNE) | 139.0 MWh | Jan 2010 | Dec 2025 | Distillate Fuel Oil |
| Franklin Solar (CT) | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.6 GWh | Feb 2018 | Dec 2025 | Solar |
| Lebanon Pines 1 & 2 | Connecticut Mun Elec Engy Coop | Lebanon, CT | ISO New England (ISNE) | 374.0 MWh | Mar 2010 | Dec 2025 | Distillate Fuel Oil |
| Adams Solar | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.6 GWh | Feb 2018 | Dec 2025 | Solar |
| Hamilton Solar | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.6 GWh | Feb 2018 | Dec 2025 | Solar |
| Jefferson Solar (CT) | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.6 GWh | Dec 2017 | Dec 2025 | Solar |
| Wilson Solar (CT) | Ecos Energy LLC | Lebanon, CT | ISO New England (ISNE) | 1.6 GWh | Feb 2018 | Dec 2025 | Solar |
| Wheelabrator Lisbon | Wheelabrator Environmental Systems | Lisbon, CT | ISO New England (ISNE) | 100.8 GWh | Sep 1995 | May 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| SR Litchfield | SR Litchfield, LLC | Litchfield, CT | ISO New England (ISNE) | 26.4 GWh | Jan 2025 | Dec 2025 | Solar |
| Manchester Community College East | Onyx Asset Services Group | Manchester, CT | ISO New England (ISNE) | 1.5 GWh | Sep 2018 | Dec 2024 | Solar |
| Foxwoods CoGen | Foxwoods Resort Casino | Mashantucket, CT | ISO New England (ISNE) | 10.8 GWh | May 2010 | Dec 2025 | Natural Gas |
| CP Middletown Solar I LLC | Green Street Power Partners | Middletown, CT | ISO New England (ISNE) | 1.6 GWh | Nov 2019 | Dec 2025 | Solar |
| CP Middletown Solar II LLC | Green Street Power Partners | Middletown, CT | ISO New England (ISNE) | 1.6 GWh | Nov 2019 | Dec 2025 | Solar |
| FedEx Middletown | VCP Realty, LLC | Middletown, CT | ISO New England (ISNE) | 1.9 GWh | Oct 2024 | Dec 2025 | Solar |
| FDX010.0 FedEx Fuel Cell | 2016 ESA Project Company, LLC | Middletown, CT | ISO New England (ISNE) | 8.1 GWh | Aug 2018 | Dec 2025 | Natural Gas |
| GenConn Middletown LLC | GenConn Middletown LLC | Middletown, CT | ISO New England (ISNE) | 6.5 GWh | May 2011 | Dec 2025 | Kerosene : 77.4% Natural Gas : 22.6% |
| Middletown | Middletown Power LLC | Middletown, CT | ISO New England (ISNE) | 33.0 GWh | Sep 1958 | Dec 2024 | Residual Fuel Oil : 60.6% Natural Gas : 39.3% |
| Kleen Energy Systems | Kleen Energy Systems, LLC | Middletown, CT | ISO New England (ISNE) | 3.7 TWh | Jun 2011 | May 2026 | Natural Gas : 97.9% Distillate Fuel Oil : 2.1% |
| Wesleyan University Cogen 1 | Wesleyan University | Middletown, CT | ISO New England (ISNE) | 4.0 GWh | Jan 2009 | Dec 2025 | Natural Gas |
| GenConn Devon LLC | GenConn Devon LLC | Milford, CT | ISO New England (ISNE) | 15.1 GWh | May 2010 | Dec 2025 | Kerosene : 75.4% Natural Gas : 24.6% |
| Dynamic Energy CT STAG | Milford Pepes Farm Road Solar LLC | Milford, CT | ISO New England (ISNE) | 2.5 GWh | Jul 2023 | Dec 2024 | Solar |
| Milford Power Project | Milford Power Co LLC | Milford, CT | ISO New England (ISNE) | 3.2 TWh | Jan 2004 | May 2026 | Natural Gas |
| Stevenson | FirstLight Power Resources Services LLC | Monroe, CT | ISO New England (ISNE) | 70.8 GWh | Dec 1918 | Dec 2025 | Water |
| Rand Whitney CHP Plant | Rand Whitney Containerboard L.P. | Montville, CT | ISO New England (ISNE) | 131.8 GWh | Mar 2005 | May 2026 | Natural Gas |
| CCSU Co-Gen-STBY Gen | Central Connecticut State University | New Britain, CT | ISO New England (ISNE) | 9.8 MWh | Sep 1993 | Dec 2025 | Natural Gas |
| CCSU Fuel Cell Project | New Britain Renewable Energy, LLC | New Britain, CT | ISO New England (ISNE) | 7.0 GWh | Mar 2012 | Dec 2025 | Natural Gas |
| IKEA New Haven Rooftop PV & Fuel Cell | IKEA Property Inc | New Haven, CT | ISO New England (ISNE) | 2.7 GWh | Jun 2012 | Dec 2025 | Natural Gas : 71.5% Solar : 28.5% |
| Amazon BDL3 Solar Project | Solar Star Prime 1 LLC | New Haven, CT | ISO New England (ISNE) | 1.7 GWh | Sep 2019 | Dec 2025 | Solar |
| UI RCP New Haven Fuel Cell | United Illuminating Co | New Haven, CT | ISO New England (ISNE) | 20.5 GWh | Jul 2015 | May 2026 | Natural Gas |
| New Haven Steam | Generation Bridge II Connecticut, LLC | New Haven, CT | ISO New England (ISNE) | 167.4 GWh | Jun 1975 | Jan 2026 | Residual Fuel Oil : 45.1% Natural Gas : 40.3% Distillate Fuel Oil : 12.2% Kerosene : 2.5% |
| Yale New Haven - New London | Bloom Energy | New London, CT | ISO New England (ISNE) | 14.0 GWh | Aug 2022 | Dec 2025 | Natural Gas |
| Connecticut College | Bloom Energy | New London, CT | ISO New England (ISNE) | 10.1 GWh | Aug 2019 | Dec 2025 | Natural Gas |
Browse Power Plants By Connecticut Counties
Figures are based on May 2026 generation numbers.| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Southeastern Connecticut Planning Region, CT | # 1 | 52 | 18.1 TWh |
| Greater Bridgeport Planning Region, CT | # 2 | 10 | 6.7 TWh |
| Northeastern Connecticut Planning Region, CT | # 3 | 17 | 6.2 TWh |
| Naugatuck Valley Planning Region, CT | # 4 | 17 | 5.9 TWh |
| Lower Connecticut River Valley Planning Region, CT | # 5 | 16 | 3.8 TWh |
| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| South Central Connecticut Planning Region, CT | # 6 | 23 | 3.6 TWh |
| Capitol Planning Region, CT | # 7 | 61 | 853.4 GWh |
| Western Connecticut Planning Region, CT | # 8 | 15 | 246.3 GWh |
| Northwest Hills Planning Region, CT | # 9 | 15 | 98.0 GWh |