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) | 151.0 MWh | Oct 2024 | 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 |
| Burlington Solar 1 | DG Connecticut III, LLC | Burlington, CT | ISO New England (ISNE) | 5.6 GWh | Jan 2022 | 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 |
| 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 |
| Powder Hill | LSE Delphinus LLC | Enfield, CT | ISO New England (ISNE) | 3.3 GWh | Nov 2020 | 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 |
| New Haven Harbor | 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% |
| Rainbow (CT) | Farmington River Power Company | Windsor, CT | ISO New England (ISNE) | 22.2 GWh | Nov 1925 | Feb 2026 | Water |
| Millstone | Dominion Energy Nuclear Conn Inc | Waterford, CT | ISO New England (ISNE) | 16.7 TWh | Nov 1975 | Feb 2026 | Nuclear |
| Bridgeport Station | Generation Bridge II Connecticut, LLC | Bridgeport, CT | ISO New England (ISNE) | 3.4 TWh | Jul 1961 | Feb 2026 | Natural Gas : 85.2% Distillate Fuel Oil : 14.8% |
| Algonquin Windsor Locks | Ahlstrom Power Windsor Locks LLC | Windsor Locks, CT | ISO New England (ISNE) | 147.0 GWh | Dec 1989 | Feb 2026 | Natural Gas : 92.2% Distillate Fuel Oil : 7.8% |
| Covanta Southeastern Connecticut Company | Covanta Southeastern Connecticut Company | Preston, CT | ISO New England (ISNE) | 113.4 GWh | Nov 1991 | Feb 2026 | Non-biogenic Municipal Solid Waste : 53.9% Biogenic Municipal Solid Waste : 44.1% Distillate Fuel Oil : 1.9% |
| Covanta Bristol Energy | Covanta Bristol Inc | Bristol, CT | ISO New England (ISNE) | 109.9 GWh | Nov 1987 | Feb 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) | 476.1 GWh | Jun 1988 | Feb 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) | 74.9 GWh | Dec 1947 | Feb 2026 | Natural Gas : 87.4% Distillate Fuel Oil : 12.6% |
| Pratt & Whitney | United Technologies | East Hartford, CT | ISO New England (ISNE) | 55.7 GWh | Dec 1991 | Feb 2026 | Natural Gas |
| Wheelabrator Lisbon | Wheelabrator Environmental Systems | Lisbon, CT | ISO New England (ISNE) | 100.2 GWh | Sep 1995 | Feb 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) | 2.6 TWh | May 1998 | Feb 2026 | Natural Gas |
| Milford Power Project | Milford Power Co LLC | Milford, CT | ISO New England (ISNE) | 3.2 TWh | Jan 2004 | Feb 2026 | Natural Gas |
| Lake Road Generating Plant | Lake Road Generating Co LP | Dayville, CT | ISO New England (ISNE) | 5.8 TWh | Feb 2002 | Feb 2026 | Natural Gas |
| CPV Towantic Energy Center | CPV Towantic, LLC | Oxford, CT | ISO New England (ISNE) | 4.9 TWh | Apr 2018 | Feb 2026 | Natural Gas |
| Kleen Energy Systems Project | Kleen Energy Systems, LLC | Middletown, CT | ISO New England (ISNE) | 3.5 TWh | Jun 2011 | Feb 2026 | Natural Gas : 97.7% Distillate Fuel Oil : 2.3% |
| Fort Hill 1, 2, 3 & 4 | Connecticut Mun Elec Engy Coop | Uncasville, CT | ISO New England (ISNE) | 571.0 MWh | Jul 2010 | Feb 2026 | Distillate Fuel Oil |
| Water Treatment 1 & 2 | Connecticut Mun Elec Engy Coop | Groton, CT | ISO New England (ISNE) | 431.0 MWh | Sep 2010 | Feb 2026 | Distillate Fuel Oil |
| Cellu Tissue | Dunn Paper East Hartford, LLC | East Hartford, CT | ISO New England (ISNE) | 11.3 GWh | Apr 2009 | Feb 2026 | Natural Gas |
| UCONN Cogen Facility | University of Connecticut | Storrs, CT | ISO New England (ISNE) | 110.7 GWh | Feb 2006 | Feb 2026 | Natural Gas : 95.2% Distillate Fuel Oil : 4.8% |
| Rand Whitney CHP Plant | Rand Whitney Containerboard L.P. | Montville, CT | ISO New England (ISNE) | 132.6 GWh | Mar 2005 | Feb 2026 | Natural Gas |
| Frito Lay Incorporated | Frito Lay Incorporated Dayville | Dayville, CT | ISO New England (ISNE) | 25.1 GWh | Feb 2009 | Feb 2026 | Natural Gas |
| Fusion Solar Center LLC | Fusion Solar Centre, L.L.C | Baltic, CT | ISO New England (ISNE) | 37.5 GWh | Feb 2018 | Feb 2026 | Solar |
| Backus Microgrid Project | Connecticut Mun Elec Engy Coop | Norwich, CT | ISO New England (ISNE) | 653.0 MWh | Jul 2014 | Feb 2026 | Distillate Fuel Oil |
| Antares-GRE 314 East Lyme LLC | MN8 Energy LLC | East Lyme, CT | ISO New England (ISNE) | 4.6 GWh | May 2014 | Feb 2026 | Solar |
| UI RCP New Haven Fuel Cell | United Illuminating Co | New Haven, CT | ISO New England (ISNE) | 18.2 GWh | Jul 2015 | Feb 2026 | Natural Gas |
| UI RCP Bridgeport Seaside | United Illuminating Co | Bridgeport, CT | ISO New England (ISNE) | 18.4 GWh | Oct 2015 | Feb 2026 | Natural Gas : 84.9% Solar : 15.1% |
| Wind Colebrook South | Wind Colebrook South | Colebrook, CT | ISO New England (ISNE) | 12.2 GWh | Oct 2015 | Feb 2026 | Wind |
| Woods Hill Solar | Woods Hill Solar, LLC | Pomfret, CT | ISO New England (ISNE) | 22.5 GWh | Nov 2018 | Feb 2026 | Solar |
| DWW Solar ll | DWW Solar ll LLC | Simsbury, CT | ISO New England (ISNE) | 44.6 GWh | Nov 2019 | Feb 2026 | Solar |
| Quinebaug Solar | Quinebaug Solar, LLC | Canterbury, CT | ISO New England (ISNE) | 74.1 GWh | Nov 2021 | Feb 2026 | Solar |
| Gravel Pit Solar, LLC | Gravel Pit Solar, LLC | East Windsor, CT | ISO New England (ISNE) | 160.2 GWh | - | Feb 2026 | Solar |
Browse Power Plants By Connecticut Counties
Figures are based on February 2026 generation numbers.| County | State Rank | Active Plants | Feb 2026 Generation |
|---|---|---|---|
| Southeastern Connecticut Planning Region, CT | # 1 | 51 | 17.5 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 | 5.3 TWh |
| Lower Connecticut River Valley Planning Region, CT | # 5 | 16 | 3.6 TWh |
| County | State Rank | Active Plants | Feb 2026 Generation |
|---|---|---|---|
| South Central Connecticut Planning Region, CT | # 6 | 23 | 3.6 TWh |
| Capitol Planning Region, CT | # 7 | 56 | 793.7 GWh |
| Western Connecticut Planning Region, CT | # 8 | 15 | 179.6 GWh |
| Northwest Hills Planning Region, CT | # 9 | 15 | 73.2 GWh |