Directory of Power Plants in Connecticut
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Wallingford Solar | Wallingford Renewable Energy, LLC | Wallingford, CT | ISO New England (ISNE) | 21.7 GWh | Aug 2021 | Dec 2023 | Solar |
| 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 |
| Torrington Solar One, LLC | DG Connecticut III, LLC | Torrington, CT | ISO New England (ISNE) | 3.4 GWh | Feb 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 |
| Watertown Solar One, LLC | DG Connecticut III, LLC | Watertown, CT | ISO New England (ISNE) | 3.0 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 |
| Medtronic - New Haven 2 | Bloom Energy | North Haven, CT | ISO New England (ISNE) | 17.0 GWh | Sep 2020 | 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 |
| Barrow Solar | Ecos Energy LLC | Somers, CT | ISO New England (ISNE) | 3.3 GWh | May 2021 | Dec 2023 | Solar |
| McHenry Solar | Ecos Energy LLC | Hampton, CT | ISO New England (ISNE) | 1.6 GWh | Sep 2021 | 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 |
| Southington Solar One | DG Connecticut III, LLC | Southington, CT | ISO New England (ISNE) | 8.7 GWh | Jan 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 |
| Generate Colchester Fuel Cells, LLC | Generate Colchester Fuel Cells, LLC | Colchester, CT | ISO New England (ISNE) | 82.3 GWh | Sep 2021 | Dec 2023 | Natural Gas |
| Connecticut College | Bloom Energy | New London, CT | ISO New England (ISNE) | 8.1 GWh | Aug 2019 | Dec 2023 | Natural Gas |
| Niagara Bottling - Bloomfield | Westbound Solar 3, LLC | Bloomfield, CT | ISO New England (ISNE) | 4.4 GWh | Oct 2022 | 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 |
| Yale New Haven - New London | Bloom Energy | New London, CT | ISO New England (ISNE) | 14.6 GWh | Aug 2022 | Dec 2023 | Natural Gas |
| Norcap South | LSE Coma Berenices LLC | East Windsor, CT | ISO New England (ISNE) | 3.4 GWh | Nov 2017 | Dec 2023 | Solar |
| Norcap North | LSE Canes Venatici LLC | East Windsor, CT | ISO New England (ISNE) | 3.4 GWh | Nov 2017 | Dec 2023 | Solar |
| Park Solar | Ecos Energy LLC | Woodbridge, CT | ISO New England (ISNE) | 20.0 MWh | Nov 2023 | Dec 2023 | Solar |
| Powder Hill | LSE Delphinus LLC | Enfield, CT | ISO New England (ISNE) | 3.3 GWh | Nov 2020 | Dec 2023 | Solar |
| Platt Hill | LSE Pictor LLC | Winchester, CT | ISO New England (ISNE) | 3.7 GWh | Dec 2021 | Dec 2023 | Solar |
| Norwich WWTP | City of Norwich - (CT) | Norwich, CT | ISO New England (ISNE) | 1.0 MWh | Apr 2006 | Mar 2024 | Distillate Fuel Oil |
| Pratt & Whitney | United Technologies | East Hartford, CT | ISO New England (ISNE) | 129.1 GWh | Dec 1991 | Aug 2024 | Natural Gas : 99.8% |
| Rocky River (CT) | FirstLight Power Resources Services LLC | New Milford, CT | ISO New England (ISNE) | 11.2 GWh | Dec 1927 | Sep 2024 | Water |
| Rainbow (CT) | Farmington River Power Company | Windsor, CT | ISO New England (ISNE) | 35.8 GWh | Nov 1925 | Sep 2024 | Water |
| Millstone | Dominion Energy Nuclear Conn Inc | Waterford, CT | ISO New England (ISNE) | 16.0 TWh | Nov 1975 | Sep 2024 | Nuclear |
| Bridgeport Station | Generation Bridge II Connecticut, LLC | Bridgeport, CT | ISO New England (ISNE) | 3.3 TWh | Jul 1961 | Sep 2024 | Natural Gas |
| New Haven Harbor | Generation Bridge II Connecticut, LLC | New Haven, CT | ISO New England (ISNE) | 30.1 GWh | Jun 1975 | Sep 2024 | Natural Gas : 82.8% Kerosene : 17.2% |
| Algonquin Windsor Locks | Algonquin Windsor Locks LLC | Windsor Locks, CT | ISO New England (ISNE) | 128.9 GWh | Dec 1989 | Sep 2024 | Natural Gas : 99.9% |
| Covanta Southeastern Connecticut Company | Covanta Southeastern Connecticut Company | Preston, CT | ISO New England (ISNE) | 116.0 GWh | Nov 1991 | Sep 2024 | Non-biogenic Municipal Solid Waste : 54.0% Biogenic Municipal Solid Waste : 44.2% Distillate Fuel Oil : 1.9% |
| Covanta Bristol Energy | Covanta Bristol Inc | Bristol, CT | ISO New England (ISNE) | 109.6 GWh | Nov 1987 | Sep 2024 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wheelabrator Bridgeport | Wheelabrator Environmental Systems | Bridgeport, CT | ISO New England (ISNE) | 453.7 GWh | Jun 1988 | Sep 2024 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Pfizer Groton Plant | Pfizer Inc | Groton, CT | ISO New England (ISNE) | 70.3 GWh | Dec 1947 | Sep 2024 | Natural Gas : 98.0% Distillate Fuel Oil : 2.0% |
| Wheelabrator Lisbon | Wheelabrator Environmental Systems | Lisbon, CT | ISO New England (ISNE) | 99.7 GWh | Sep 1995 | Sep 2024 | 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 | Sep 2024 | Natural Gas |
| Milford Power Project | Milford Power Co LLC | Milford, CT | ISO New England (ISNE) | 3.7 TWh | Jan 2004 | Sep 2024 | Natural Gas |
| Lake Road Generating Plant | Lake Road Generating Co LP | Dayville, CT | ISO New England (ISNE) | 5.7 TWh | Feb 2002 | Sep 2024 | Natural Gas |
| CPV Towantic Energy Center | CPV Towantic, LLC | Oxford, CT | ISO New England (ISNE) | 5.3 TWh | Apr 2018 | Sep 2024 | Natural Gas |
| Kleen Energy Systems Project | Kleen Energy Systems, LLC | Middletown, CT | ISO New England (ISNE) | 2.7 TWh | Jun 2011 | Sep 2024 | Natural Gas : 99.4% Distillate Fuel Oil : 0.6% |
| Fort Hill 1, 2, 3 & 4 | Connecticut Mun Elec Engy Coop | Uncasville, CT | ISO New England (ISNE) | 701.0 MWh | Jul 2010 | Sep 2024 | Distillate Fuel Oil |
| Water Treatment 1 & 2 | Connecticut Mun Elec Engy Coop | Groton, CT | ISO New England (ISNE) | 375.0 MWh | Sep 2010 | Sep 2024 | Distillate Fuel Oil |
| Cellu Tissue | Dunn Paper East Hartford, LLC | East Hartford, CT | ISO New England (ISNE) | 12.1 GWh | Apr 2009 | Sep 2024 | Natural Gas |
| UCONN Cogen Facility | University of Connecticut | Storrs, CT | ISO New England (ISNE) | 122.8 GWh | Feb 2006 | Sep 2024 | Natural Gas : 99.7% |
| Rand Whitney CHP Plant | Rand Whitney Containerboard L.P. | Montville, CT | ISO New England (ISNE) | 133.7 GWh | Mar 2005 | Sep 2024 | Natural Gas |
| Frito Lay Incorporated | Frito Lay Incorporated Dayville | Dayville, CT | ISO New England (ISNE) | 24.4 GWh | Feb 2009 | Sep 2024 | Natural Gas |
| Fusion Solar Center LLC | Fusion Solar Centre, L.L.C | Baltic, CT | ISO New England (ISNE) | 38.1 GWh | Feb 2018 | Sep 2024 | Solar |
| Backus Microgrid Project | Connecticut Mun Elec Engy Coop | Norwich, CT | ISO New England (ISNE) | 937.0 MWh | Jul 2014 | Sep 2024 | Distillate Fuel Oil |
| Antares-GRE 314 East Lyme LLC | MN8 Energy LLC | East Lyme, CT | ISO New England (ISNE) | 4.1 GWh | May 2014 | Sep 2024 | Solar |
| UI RCP New Haven Fuel Cell | United Illuminating Co | New Haven, CT | ISO New England (ISNE) | 19.4 GWh | Jul 2015 | Sep 2024 | Natural Gas |
| UI RCP Bridgeport Seaside | United Illuminating Co | Bridgeport, CT | ISO New England (ISNE) | 19.7 GWh | Oct 2015 | Sep 2024 | Natural Gas : 93.3% Solar : 6.7% |
| Wind Colebrook South | Wind Colebrook South | Colebrook, CT | ISO New England (ISNE) | 10.0 GWh | Oct 2015 | Sep 2024 | Wind |
| Woods Hill Solar | Woods Hill Solar, LLC | Pomfret, CT | ISO New England (ISNE) | 23.5 GWh | Nov 2018 | Sep 2024 | Solar |
| DWW Solar ll | DWW Solar ll LLC | Simsbury, CT | ISO New England (ISNE) | 50.0 GWh | Nov 2019 | Sep 2024 | Solar |
| Quinebaug Solar | Quinebaug Solar, LLC | Canterbury, CT | ISO New England (ISNE) | 77.2 GWh | Nov 2021 | Sep 2024 | Solar |
Browse Power Plants By Connecticut Counties
Figures are based on September 2024 generation numbers.| County | State Rank | Active Plants | Sep 2024 Generation |
|---|---|---|---|
| Southeastern Connecticut Planning Region, CT | # 1 | 50 | 16.9 TWh |
| Greater Bridgeport Planning Region, CT | # 2 | 10 | 6.7 TWh |
| Northeastern Connecticut Planning Region, CT | # 3 | 17 | 6.1 TWh |
| Naugatuck Valley Planning Region, CT | # 4 | 13 | 5.7 TWh |
| South Central Connecticut Planning Region, CT | # 5 | 23 | 4.0 TWh |
| County | State Rank | Active Plants | Sep 2024 Generation |
|---|---|---|---|
| Lower Connecticut River Valley Planning Region, CT | # 6 | 15 | 3.0 TWh |
| Capitol Planning Region, CT | # 7 | 50 | 711.3 GWh |
| Western Connecticut Planning Region, CT | # 8 | 14 | 305.3 GWh |
| Northwest Hills Planning Region, CT | # 9 | 15 | 92.3 GWh |