Directory of Power Plants in Connecticut
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Norcap South | LSE Coma Berenices LLC | East Windsor, CT | ISO New England (ISNE) | 3.4 GWh | Nov 2017 | 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 |
| Hartford Landfill Solar EGF | Materials Innovation Recycling Authority | Hartford, CT | ISO New England (ISNE) | 1.4 GWh | May 2014 | Dec 2023 | Solar |
| Derby Hydro | McCallum Enterprises I LP | Shelton, CT | ISO New England (ISNE) | 9.3 GWh | Dec 1988 | Dec 2023 | Water |
| Goodwin Hydroelectric | Metropolitan Dist of Hartford | W. Hartland, CT | ISO New England (ISNE) | 12.9 GWh | Mar 1986 | Dec 2023 | Water |
| 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% |
| Milford Power Project | Milford Power Co LLC | Milford, CT | ISO New England (ISNE) | 3.6 TWh | Jan 2004 | Aug 2024 | Natural Gas |
| Antares-GRE 314 East Lyme LLC | MN8 Energy LLC | East Lyme, CT | ISO New England (ISNE) | 4.1 GWh | May 2014 | Aug 2024 | Solar |
| South Meadow | NAES Corp | Hartford, CT | ISO New England (ISNE) | 1.5 GWh | Jul 1970 | Dec 2022 | Kerosene |
| CCSU Fuel Cell Project | New Britain Renewable Energy, LLC | New Britain, CT | ISO New England (ISNE) | 10.2 GWh | Mar 2012 | Dec 2023 | Natural Gas |
| Norwalk Hospital Plant | Norwalk Hospital | Norwalk, CT | ISO New England (ISNE) | 4.3 GWh | Apr 1992 | Dec 2022 | Natural Gas |
| 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% |
| Nutmeg Solar | Nutmeg Solar LLC | Enfield, CT | ISO New England (ISNE) | 33.4 GWh | Nov 2020 | Dec 2023 | Solar |
| Somers Solar Center, LLC | Onward Energy | Somers, CT | ISO New England (ISNE) | 7.9 GWh | Nov 2013 | Dec 2023 | Solar |
| Barrett Farm Solar - Phase I | Onyx Asset Services Group | Thompson, CT | ISO New England (ISNE) | 2.9 GWh | Sep 2017 | 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 |
| Manchester Community College North | Onyx Asset Services Group | Great Path, CT | ISO New England (ISNE) | 1.5 GWh | Sep 2018 | Dec 2023 | Solar |
| Pepperidge Farm Bloomfield | Pepperidge Farm, Inc.- Bloomfield | Bloomfield, CT | ISO New England (ISNE) | 16.5 GWh | Jul 2008 | Dec 2023 | Natural Gas |
| Pfizer Groton Plant | Pfizer Inc | Groton, CT | ISO New England (ISNE) | 69.4 GWh | Dec 1947 | Aug 2024 | Natural Gas : 97.6% Distillate Fuel Oil : 2.4% |
| 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% |
| Quinebaug Lower Project | Quinebaug Associates LLC | Brooklyn, CT | ISO New England (ISNE) | 10.1 GWh | Mar 1990 | Dec 2023 | Water |
| Quinebaug Solar | Quinebaug Solar, LLC | Canterbury, CT | ISO New England (ISNE) | 76.5 GWh | Nov 2021 | Aug 2024 | Solar |
| Rand Whitney CHP Plant | Rand Whitney Containerboard L.P. | Montville, CT | ISO New England (ISNE) | 133.5 GWh | Mar 2005 | Aug 2024 | Natural Gas |
| Sikorsky Aircraft CHP | Sikorsky Aircraft Corporation | Stratford, CT | ISO New England (ISNE) | 64.3 GWh | May 2010 | Dec 2023 | Natural Gas : 99.9% |
| Amazon BDL3 Solar Project | Solar Star Prime 1 LLC | New Haven, CT | ISO New England (ISNE) | 1.1 GWh | Sep 2019 | Dec 2023 | Solar |
| South Windsor Fuel Cell | South Energy Investments LLC | South Windsor, CT | ISO New England (ISNE) | 39.2 GWh | Feb 2020 | Dec 2023 | Natural Gas |
| Stamford Health | Stamford Health Systems, Inc. | Stamford, CT | ISO New England (ISNE) | 84.0 MWh | Dec 1983 | Dec 2022 | Distillate Fuel Oil |
| Advance Stores Company, Inc | Tesla Inc. | Enfield, CT | ISO New England (ISNE) | 1.2 GWh | Oct 2014 | Dec 2023 | Solar |
| CMEEC - Rogers Rd Solar | Tesla Inc. | Norwich, CT | ISO New England (ISNE) | 1.6 GWh | Jan 2017 | Dec 2023 | Solar |
| Town of Branford | Tesla Inc. | Branford, CT | ISO New England (ISNE) | 1.5 GWh | May 2018 | 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 |
| 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 |
| Conn Mun Electric Energy Coop | Tesla Inc. | Norwich, CT | ISO New England (ISNE) | 1.3 GWh | Nov 2016 | Dec 2023 | Solar |
| CMEEC - Bozrah | Tesla Inc. | Bozrah, CT | ISO New England (ISNE) | 3.1 GWh | Nov 2016 | Dec 2023 | Solar |
| Norden 1-3 | Third Taxing District of Norwalk | Norwalk, CT | ISO New England (ISNE) | 42.0 MWh | May 2004 | Dec 2022 | Distillate Fuel Oil |
| Stafford MS Ground Mount Community Solar | Town of Stafford - (CT) | Stafford, CT | ISO New England (ISNE) | 3.2 GWh | Jun 2016 | Dec 2023 | Solar |
| UB Fuel Cell | UB Fuel Cell | Bridgeport, CT | ISO New England (ISNE) | 10.5 GWh | Mar 2015 | Dec 2023 | Natural Gas |
| UDR Glastonbury Fuel Cell | UIL Distributed Resources, LLC | Glastonbury, CT | ISO New England (ISNE) | 21.1 GWh | Jan 2016 | Dec 2023 | Natural Gas |
| UI RCP New Haven Fuel Cell | United Illuminating Co | New Haven, CT | ISO New England (ISNE) | 19.4 GWh | Jul 2015 | Aug 2024 | Natural Gas |
| UI RCP Woodbridge FC | United Illuminating Co | Woodbridge, CT | ISO New England (ISNE) | 16.5 GWh | Nov 2016 | Dec 2023 | Natural Gas |
| UI RCP Bridgeport Seaside | United Illuminating Co | Bridgeport, CT | ISO New England (ISNE) | 19.4 GWh | Oct 2015 | Aug 2024 | Natural Gas : 94.4% Solar : 5.6% |
| Pratt & Whitney | United Technologies | East Hartford, CT | ISO New England (ISNE) | 129.1 GWh | Dec 1991 | Aug 2024 | Natural Gas : 99.8% |
| UCONN Cogen Facility | University of Connecticut | Storrs, CT | ISO New England (ISNE) | 123.9 GWh | Feb 2006 | Aug 2024 | Natural Gas : 99.7% |
| Wallingford Energy | Wallingford Energy LLC | Wallingford, CT | ISO New England (ISNE) | 161.3 GWh | Jul 2001 | Dec 2023 | Natural Gas |
| Wallingford Solar | Wallingford Renewable Energy, LLC | Wallingford, CT | ISO New England (ISNE) | 21.7 GWh | Aug 2021 | Dec 2023 | Solar |
| Waterside Power, LLC | Waterside Power, LLC | Stamford, CT | ISO New England (ISNE) | 1.8 GWh | May 2003 | Dec 2023 | Distillate Fuel Oil |
| Wesleyan University Cogen 1 | Wesleyan University | Middletown, CT | ISO New England (ISNE) | 10.5 GWh | Jan 2009 | 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 |
| Wheelabrator Lisbon | Wheelabrator Environmental Systems | Lisbon, CT | ISO New England (ISNE) | 99.4 GWh | Sep 1995 | Aug 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) | 441.9 GWh | Jun 1988 | Aug 2024 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wind Colebrook South | Wind Colebrook South | Colebrook, CT | ISO New England (ISNE) | 9.7 GWh | Oct 2015 | Aug 2024 | Wind |
| New Milford Gas Recovery | WM Renewable Energy LLC | New Milford, CT | ISO New England (ISNE) | 5.4 GWh | Apr 2008 | Dec 2023 | Landfill Gas |
| Woods Hill Solar | Woods Hill Solar, LLC | Pomfret, CT | ISO New England (ISNE) | 23.6 GWh | Nov 2018 | Aug 2024 | Solar |
Browse Power Plants By Connecticut Counties
Figures are based on August 2024 generation numbers.| County | State Rank | Active Plants | Aug 2024 Generation |
|---|---|---|---|
| Southeastern Connecticut Planning Region, CT | # 1 | 50 | 17.1 TWh |
| Greater Bridgeport Planning Region, CT | # 2 | 10 | 6.5 TWh |
| Northeastern Connecticut Planning Region, CT | # 3 | 17 | 6.1 TWh |
| Naugatuck Valley Planning Region, CT | # 4 | 13 | 5.8 TWh |
| South Central Connecticut Planning Region, CT | # 5 | 23 | 3.8 TWh |
| County | State Rank | Active Plants | Aug 2024 Generation |
|---|---|---|---|
| Lower Connecticut River Valley Planning Region, CT | # 6 | 15 | 3.0 TWh |
| Capitol Planning Region, CT | # 7 | 50 | 717.6 GWh |
| Western Connecticut Planning Region, CT | # 8 | 14 | 311.0 GWh |
| Northwest Hills Planning Region, CT | # 9 | 15 | 91.9 GWh |