Directory of Power Plants in Connecticut
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| FedEx Middletown | VCP Realty, LLC | Middletown, CT | ISO New England (ISNE) | 1.9 GWh | Oct 2024 | Dec 2025 | Solar |
| Enfield Solar One | Enfield Solar One, LLC | Hartford, CT | ISO New England (ISNE) | 8.3 GWh | Mar 2024 | Dec 2025 | Solar |
| North Haven Solar One | North Haven Solar One, LLC | North Haven, CT | ISO New England (ISNE) | 2.8 GWh | Feb 2024 | Dec 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 |
| Clinton Solar | Ecos Energy LLC | Griswold, CT | ISO New England (ISNE) | 1.7 GWh | Apr 2021 | Dec 2025 | Solar |
| Medtronic - New Haven 2 | Bloom Energy | North Haven, CT | ISO New England (ISNE) | 16.9 GWh | Sep 2020 | Dec 2025 | Natural Gas |
| Medtronic - New Haven | Bloom Energy | North Haven, CT | ISO New England (ISNE) | 18.0 GWh | Sep 2020 | Dec 2025 | Natural Gas |
| Barrow Solar | Ecos Energy LLC | Somers, CT | ISO New England (ISNE) | 3.1 GWh | May 2021 | Dec 2025 | Solar |
| McHenry Solar | Ecos Energy LLC | Hampton, CT | ISO New England (ISNE) | 1.6 GWh | Sep 2021 | Dec 2025 | Solar |
| Southington Solar One | DG Connecticut III, LLC | Southington, CT | ISO New England (ISNE) | 9.1 GWh | Jan 2022 | Dec 2025 | Solar |
| Burlington Solar 1 | DG Connecticut III, LLC | Burlington, CT | ISO New England (ISNE) | 5.8 GWh | Jan 2022 | 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 |
| Connecticut College | Bloom Energy | New London, CT | ISO New England (ISNE) | 10.1 GWh | Aug 2019 | Dec 2025 | Natural Gas |
| Niagara Bottling - Bloomfield | Westbound Solar 3, LLC | Bloomfield, CT | ISO New England (ISNE) | 4.0 GWh | Oct 2022 | Dec 2025 | Solar |
| Emerald Gardens PKI, LLC | Emerald Gardens PKI, LLC | Shelton, CT | ISO New England (ISNE) | 2.0 GWh | Sep 2021 | Dec 2025 | Solar |
| Yale New Haven - New London | Bloom Energy | New London, CT | ISO New England (ISNE) | 14.0 GWh | Aug 2022 | Dec 2025 | Natural Gas |
| 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) | 3.3 GWh | Nov 2017 | Dec 2025 | Solar |
| Park Solar | Ecos Energy LLC | Woodbridge, CT | ISO New England (ISNE) | 1.5 GWh | Nov 2023 | Dec 2025 | Solar |
| Powder Hill | LSE Delphinus LLC | Enfield, CT | ISO New England (ISNE) | 3.2 GWh | Nov 2020 | Dec 2025 | Solar |
| Platt Hill | LSE Pictor LLC | Winchester, CT | ISO New England (ISNE) | 3.5 GWh | Dec 2021 | Dec 2025 | Solar |
| Sand Road | LSE Phoenix LLC | North Canaan, CT | ISO New England (ISNE) | 3.4 GWh | Oct 2021 | Dec 2025 | Solar |
| Norfolk Landfill Solar Project | NJR Clean Energy Ventures Corporation | Norfolk, CT | ISO New England (ISNE) | 5.6 GWh | Nov 2024 | Dec 2025 | Solar |
| Raffia Road Solar Project | NJR Clean Energy Ventures Corporation | Enfield, CT | ISO New England (ISNE) | 7.0 GWh | Nov 2024 | Dec 2025 | Solar |
| Bunce | LSE Indus LLC | North Canaan, CT | ISO New England (ISNE) | 3.2 GWh | Mar 2022 | Dec 2025 | Solar |
| Dynamic Energy CT STAG | Milford Pepes Farm Road Solar LLC | Milford, CT | ISO New England (ISNE) | 2.5 GWh | Jul 2023 | 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 |
| Amazon BDL4 | Telyon AMZ Windsor LLC | Windsor, CT | ISO New England (ISNE) | 3.7 GWh | Dec 2024 | Dec 2025 | Solar |
| Benz Solar 1 | Ecos Energy LLC | Ansonia, CT | ISO New England (ISNE) | 1.3 GWh | Feb 2025 | Dec 2025 | Solar |
| Benz Solar 2 | Ecos Energy LLC | Ansonia, CT | ISO New England (ISNE) | 1.3 GWh | Feb 2025 | Dec 2025 | Solar |
| CP East Hampton I & II Solar | NJR Clean Energy Ventures Corporation | East Hampton, CT | ISO New England (ISNE) | 3.1 GWh | Jan 2021 | Dec 2025 | Solar |
| Stamford Health Tully Health Center | Stamford Health Tully Health Center | Stamford, CT | ISO New England (ISNE) | 5.1 GWh | Apr 2002 | Dec 2025 | Natural Gas |
| East Windsor | NJR Clean Energy Ventures Corporation | East Windsor, CT | ISO New England (ISNE) | 869.0 MWh | Aug 2025 | Dec 2025 | Solar |
| Glastonbury Solar One | NJR Clean Energy Ventures Corporation | Glastonbury, CT | ISO New England (ISNE) | 821.0 MWh | Aug 2025 | Dec 2025 | Solar |
| CTGB Manson Youth | TotalEnergies Renewables USA LLC | Cheshire, CT | ISO New England (ISNE) | 3.0 GWh | Nov 2024 | Dec 2025 | Solar |
| CTGB Osborn | TotalEnergies Renewables USA LLC | Somers, CT | ISO New England (ISNE) | 2.7 GWh | Nov 2024 | Dec 2025 | Solar |
| CTGB Maloney and Webster | TotalEnergies Renewables USA LLC | Cheshire, CT | ISO New England (ISNE) | 3.2 GWh | Jun 2025 | Dec 2025 | Solar |
| Bilton Solar | Ecos Energy LLC | Somers, CT | ISO New England (ISNE) | 2.5 GWh | Aug 2023 | Dec 2025 | Solar |
| New Britain - 142 Deming Rd | Onyx Asset Services Group | Berlin, CT | ISO New England (ISNE) | 44.0 MWh | Nov 2025 | Dec 2025 | Solar |
| Rainbow (CT) | Farmington River Power Company | Windsor, CT | ISO New England (ISNE) | 19.4 GWh | Nov 1925 | Aug 2026 | Water |
| Millstone | Dominion Energy Nuclear Conn Inc | Waterford, CT | ISO New England (ISNE) | 17.0 TWh | Nov 1975 | Aug 2026 | Nuclear |
| Bridgeport Station | Generation Bridge II Connecticut, LLC | Bridgeport, CT | ISO New England (ISNE) | 3.2 TWh | Jul 1961 | Aug 2026 | Natural Gas : 84.6% Distillate Fuel Oil : 15.4% |
| New Haven Steam | Generation Bridge II Connecticut, LLC | New Haven, CT | ISO New England (ISNE) | 149.9 GWh | Jun 1975 | Aug 2026 | Residual Fuel Oil : 51.2% Natural Gas : 35.5% Distillate Fuel Oil : 10.4% Kerosene : 2.8% |
| Algonquin Windsor Locks | Ahlstrom Power Windsor Locks LLC | Windsor Locks, CT | ISO New England (ISNE) | 143.1 GWh | Dec 1989 | Aug 2026 | Natural Gas : 92.0% Distillate Fuel Oil : 8.0% |
| Covanta Southeastern Connecticut Company | Covanta Southeastern Connecticut Company | Preston, CT | ISO New England (ISNE) | 106.2 GWh | Nov 1991 | Aug 2026 | Non-biogenic Municipal Solid Waste : 53.9% Biogenic Municipal Solid Waste : 44.1% Distillate Fuel Oil : 2.0% |
| Covanta Bristol Energy | Covanta Bristol Inc | Bristol, CT | ISO New England (ISNE) | 107.5 GWh | Nov 1987 | Aug 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wheelabrator Bridgeport | Wheelabrator Environmental Systems | Bridgeport, CT | ISO New England (ISNE) | 429.7 GWh | Jun 1988 | Aug 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Pfizer Groton Plant | Pfizer Inc | Groton, CT | ISO New England (ISNE) | 82.3 GWh | Dec 1947 | Aug 2026 | Natural Gas : 92.1% Distillate Fuel Oil : 7.9% |
| Pratt & Whitney | United Technologies | East Hartford, CT | ISO New England (ISNE) | 93.1 GWh | Dec 1991 | Aug 2026 | Natural Gas |
| Wheelabrator Lisbon | Wheelabrator Environmental Systems | Lisbon, CT | ISO New England (ISNE) | 100.8 GWh | Sep 1995 | Aug 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) | 2.8 TWh | May 1998 | Aug 2026 | Natural Gas |
| Milford Power Project | Milford Power Co LLC | Milford, CT | ISO New England (ISNE) | 3.2 TWh | Jan 2004 | Aug 2026 | Natural Gas |
| Lake Road Generating Plant | Lake Road Generating Co LP | Dayville, CT | ISO New England (ISNE) | 5.9 TWh | Feb 2002 | Aug 2026 | Natural Gas |
| CPV Towantic Energy Center | CPV Towantic, LLC | Oxford, CT | ISO New England (ISNE) | 5.6 TWh | Apr 2018 | Aug 2026 | Natural Gas |
| Kleen Energy Systems | Kleen Energy Systems, LLC | Middletown, CT | ISO New England (ISNE) | 3.9 TWh | Jun 2011 | Aug 2026 | Natural Gas : 98.0% Distillate Fuel Oil : 2.0% |
| Fort Hill 1, 2, 3 & 4 | Connecticut Mun Elec Engy Coop | Uncasville, CT | ISO New England (ISNE) | 639.0 MWh | Jul 2010 | Aug 2026 | Distillate Fuel Oil |
| Water Treatment 1 & 2 | Connecticut Mun Elec Engy Coop | Groton, CT | ISO New England (ISNE) | 410.0 MWh | Sep 2010 | Aug 2026 | Distillate Fuel Oil |
| Cellu Tissue | Dunn Paper East Hartford, LLC | East Hartford, CT | ISO New England (ISNE) | 10.8 GWh | Apr 2009 | Aug 2026 | Natural Gas |
| UCONN Cogen Facility | University of Connecticut | Storrs, CT | ISO New England (ISNE) | 111.5 GWh | Feb 2006 | Aug 2026 | Natural Gas : 95.1% Distillate Fuel Oil : 4.9% |
| Rand Whitney CHP Plant | Rand Whitney Containerboard L.P. | Montville, CT | ISO New England (ISNE) | 132.0 GWh | Mar 2005 | Aug 2026 | Natural Gas |
| Frito Lay Incorporated | Frito Lay Incorporated Dayville | Dayville, CT | ISO New England (ISNE) | 25.3 GWh | Feb 2009 | Aug 2026 | Natural Gas |
| Fusion Solar Center LLC | Fusion Solar Centre, L.L.C | Baltic, CT | ISO New England (ISNE) | 38.1 GWh | Feb 2018 | Aug 2026 | Solar |
| Backus Microgrid Project | Connecticut Mun Elec Engy Coop | Norwich, CT | ISO New England (ISNE) | 823.0 MWh | Jul 2014 | Aug 2026 | Distillate Fuel Oil |
| Antares-GRE 314 East Lyme LLC | MN8 Energy LLC | East Lyme, CT | ISO New England (ISNE) | 4.4 GWh | May 2014 | Aug 2026 | Solar |
| UI RCP New Haven Fuel Cell | United Illuminating Co | New Haven, CT | ISO New England (ISNE) | 20.5 GWh | Jul 2015 | Aug 2026 | Natural Gas |
| UI RCP Bridgeport Seaside | United Illuminating Co | Bridgeport, CT | ISO New England (ISNE) | 18.1 GWh | Oct 2015 | Aug 2026 | Natural Gas : 85.6% Solar : 14.4% |
| Wind Colebrook South | Wind Colebrook South | Colebrook, CT | ISO New England (ISNE) | 12.1 GWh | Oct 2015 | Aug 2026 | Wind |
| Woods Hill Solar | Woods Hill Solar, LLC | Pomfret, CT | ISO New England (ISNE) | 21.6 GWh | Nov 2018 | Aug 2026 | Solar |
| DWW Solar ll | DWW Solar ll LLC | Simsbury, CT | ISO New England (ISNE) | 46.2 GWh | Nov 2019 | Aug 2026 | Solar |
| Quinebaug Solar | Quinebaug Solar, LLC | Canterbury, CT | ISO New England (ISNE) | 75.0 GWh | Nov 2021 | Aug 2026 | Solar |
| Gravel Pit Solar, LLC | Gravel Pit Solar, LLC | East Windsor, CT | ISO New England (ISNE) | 198.1 GWh | Jan 2025 | Aug 2026 | Solar |
Browse Power Plants By Connecticut Counties
Figures are based on August 2026 generation numbers.| County | State Rank | Active Plants | Aug 2026 Generation |
|---|---|---|---|
| Southeastern Connecticut Planning Region, CT | # 1 | 53 | 17.9 TWh |
| Greater Bridgeport Planning Region, CT | # 2 | 10 | 6.8 TWh |
| Northeastern Connecticut Planning Region, CT | # 3 | 17 | 6.2 TWh |
| Naugatuck Valley Planning Region, CT | # 4 | 17 | 6.0 TWh |
| Lower Connecticut River Valley Planning Region, CT | # 5 | 16 | 4.1 TWh |
| County | State Rank | Active Plants | Aug 2026 Generation |
|---|---|---|---|
| South Central Connecticut Planning Region, CT | # 6 | 23 | 3.6 TWh |
| Capitol Planning Region, CT | # 7 | 61 | 882.7 GWh |
| Western Connecticut Planning Region, CT | # 8 | 15 | 248.1 GWh |
| Northwest Hills Planning Region, CT | # 9 | 15 | 101.2 GWh |