Directory of Power Plants in Connecticut
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Yale New Haven - New London | Bloom Energy | New London, CT | (ISNE) | 4.1 GWh | Aug 2022 | Dec 2022 | Natural Gas |
| Woods Hill Solar | Woods Hill Solar, LLC | Pomfret, CT | (ISNE) | 27.6 GWh | Nov 2018 | Jun 2024 | Solar |
| Wind Colebrook South | Wind Colebrook South | Colebrook, CT | (ISNE) | 10.0 GWh | Oct 2015 | May 2024 | Wind |
| Wilson Solar | Ecos Energy LLC | Lebanon, CT | (ISNE) | 1.6 GWh | Feb 2018 | Dec 2023 | Solar |
| Wheelabrator Lisbon | Wheelabrator Environmental Systems | Lisbon, CT | (ISNE) | 107.9 GWh | Sep 1995 | Jun 2024 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wheelabrator Bridgeport | Wheelabrator Environmental Systems | Bridgeport, CT | (ISNE) | 485.7 GWh | Jun 1988 | Jun 2024 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wesleyan University Cogen 1 | Wesleyan University | Middletown, CT | (ISNE) | 11.2 GWh | Jan 2009 | Dec 2023 | Natural Gas |
| Watertown Solar One, LLC | DG Connecticut III, LLC | Watertown, CT | (ISNE) | 3.1 GWh | May 2021 | Dec 2023 | Solar |
| Waterside Power, LLC | Waterside Power, LLC | Stamford, CT | (ISNE) | 1.8 GWh | May 2003 | Dec 2022 | Distillate Fuel Oil |
| Waterbury Generation | Engie North America | Waterbury, CT | (ISNE) | 42.5 GWh | May 2009 | Dec 2023 | Natural Gas : 99.7% |
| Water Treatment 1 & 2 | Connecticut Mun Elec Engy Coop | Groton, CT | (ISNE) | 520.0 MWh | Sep 2010 | Jun 2024 | Distillate Fuel Oil |
| Wallingford Solar | Wallingford Renewable Energy, LLC | Wallingford, CT | (ISNE) | 22.5 GWh | Aug 2021 | Dec 2023 | Solar |
| Wallingford Energy | Wallingford Energy LLC | Wallingford, CT | (ISNE) | 163.5 GWh | Jul 2001 | Dec 2023 | Natural Gas |
| UI RCP Woodbridge FC | United Illuminating Co | Woodbridge, CT | (ISNE) | 17.4 GWh | Nov 2016 | Dec 2023 | Natural Gas |
| UI RCP New Haven Fuel Cell | United Illuminating Co | New Haven, CT | (ISNE) | 21.1 GWh | Jul 2015 | Jun 2024 | Natural Gas |
| UI RCP Bridgeport Seaside | United Illuminating Co | Bridgeport, CT | (ISNE) | 22.0 GWh | Oct 2015 | Jun 2024 | Natural Gas : 95.9% Solar : 4.1% |
| UDR Glastonbury Fuel Cell | UIL Distributed Resources, LLC | Glastonbury, CT | (ISNE) | 22.8 GWh | Jan 2016 | Dec 2023 | Natural Gas |
| UCONN Cogen Facility | University of Connecticut | Storrs, CT | (ISNE) | 133.1 GWh | Feb 2006 | Jun 2024 | Natural Gas : 99.7% |
| UB Fuel Cell | UB Fuel Cell | Bridgeport, CT | (ISNE) | 11.2 GWh | Mar 2015 | Dec 2023 | Natural Gas |
| Tunnel | FirstLight Power Resources Services LLC | Preston, CT | (ISNE) | 12.7 GWh | Dec 1918 | Dec 2023 | Water : 98.0% Jet Fuel : 2.0% |
| Trinity College Fuel Cell | AEP Onsite Partners, LLC | Hartford, CT | (ISNE) | 10.1 GWh | Jul 2018 | Dec 2022 | Natural Gas |
| Town of Rocky Hill PV CSG | Tesla Inc. | Rocky Hill, CT | (ISNE) | 4.8 GWh | Feb 2018 | Dec 2023 | Solar |
| Town of Branford | Tesla Inc. | Branford, CT | (ISNE) | 1.6 GWh | May 2018 | Dec 2023 | Solar |
| Torrington Terminal | Connecticut Jet Power LLC | Torrington, CT | (ISNE) | 191.2 MWh | Oct 1967 | Dec 2022 | Kerosene |
| Torrington Solar One, LLC | DG Connecticut III, LLC | Torrington, CT | (ISNE) | 3.5 GWh | Feb 2021 | Dec 2023 | Solar |
| Ticket Network South Windsor | EnterSolar | South Windsor, CT | (ISNE) | 1.6 GWh | Apr 2018 | Dec 2023 | Solar |
| Tenth Street | City of Norwich - (CT) | Norwich, CT | (ISNE) | 3.9 GWh | Apr 1967 | Dec 2023 | Water |
| Taftville | FirstLight Power Resources Services LLC | Taftville, CT | (ISNE) | 5.1 GWh | Dec 1905 | Dec 2023 | Water |
| Sydney Solar | Ecos Energy LLC | Hampton, CT | (ISNE) | 3.2 GWh | May 2020 | Dec 2023 | Solar |
| Subase Microgrid Project | Connecticut Mun Elec Engy Coop | Groton, CT | (ISNE) | 53.3 GWh | Nov 2022 | Dec 2023 | Natural Gas |
| Stevenson | FirstLight Power Resources Services LLC | Monroe, CT | (ISNE) | 117.9 GWh | Dec 1918 | Dec 2023 | Water |
| Stamford Health | Stamford Health Systems, Inc. | Stamford, CT | (ISNE) | 88.6 MWh | Dec 1983 | Dec 2022 | Distillate Fuel Oil |
| Stafford MS Ground Mount Community Solar | Town of Stafford - (CT) | Stafford, CT | (ISNE) | 3.5 GWh | Jun 2016 | Dec 2022 | Solar |
| Southington Solar One | DG Connecticut III, LLC | Southington, CT | (ISNE) | 9.0 GWh | Jan 2022 | Dec 2023 | Solar |
| South Windsor Fuel Cell | South Energy Investments LLC | South Windsor, CT | (ISNE) | 42.0 GWh | Feb 2020 | Dec 2023 | Natural Gas |
| South Meadow | NAES Corp | Hartford, CT | (ISNE) | 1.5 GWh | Jul 1970 | Dec 2022 | Kerosene |
| Somers Solar Center, LLC | Onward Energy | Somers, CT | (ISNE) | 8.2 GWh | Nov 2013 | Dec 2023 | Solar |
| Sikorsky Aircraft CHP | Sikorsky Aircraft Corporation | Stratford, CT | (ISNE) | 69.4 GWh | May 2010 | Dec 2023 | Natural Gas : 99.8% |
| Sherman Solar | Ecos Energy LLC | Griswold, CT | (ISNE) | 1.6 GWh | Nov 2019 | Dec 2023 | Solar |
| Shepaug | FirstLight Power Resources Services LLC | Southbury, CT | (ISNE) | 173.9 GWh | Dec 1954 | Dec 2023 | Water |
| Scotland Dam | FirstLight Power Resources Services LLC | Windham, CT | (ISNE) | 10.2 GWh | Dec 1936 | Dec 2023 | Water |
| Rocky River (CT) | FirstLight Power Resources Services LLC | New Milford, CT | (ISNE) | 13.4 GWh | Dec 1927 | Jun 2024 | Water |
| Rand Whitney CHP Plant | Rand Whitney Containerboard L.P. | Montville, CT | (ISNE) | 139.4 GWh | Mar 2005 | Jun 2024 | Natural Gas |
| Rainbow (CT) | Farmington River Power Company | Windsor, CT | (ISNE) | 42.6 GWh | Nov 1925 | Jun 2024 | Water |
| Quinebaug Solar | Quinebaug Solar, LLC | Canterbury, CT | (ISNE) | 83.9 GWh | Nov 2021 | Jun 2024 | Solar |
| Quinebaug Lower Project | Quinebaug Associates LLC | Brooklyn, CT | (ISNE) | 10.6 GWh | Mar 1990 | Dec 2023 | Water |
| Pratt & Whitney | United Technologies | East Hartford, CT | (ISNE) | 138.8 GWh | Dec 1991 | Jun 2024 | Natural Gas : 99.8% |
| Powder Hill | LSE Delphinus LLC | Enfield, CT | (ISNE) | 3.3 GWh | Nov 2020 | Dec 2023 | Solar |
| Platt Hill | LSE Pictor LLC | Winchester, CT | (ISNE) | 3.7 GWh | Dec 2021 | Dec 2023 | Solar |
| Plainfield Solar 2 | Ecos Energy LLC | Plainfield, CT | (ISNE) | 1.5 GWh | Mar 2020 | Dec 2023 | Solar |
| Plainfield Solar 1 | Ecos Energy LLC | Plainfield, CT | (ISNE) | 1.5 GWh | Dec 2019 | Dec 2023 | Solar |
| Pfizer Groton Plant | Pfizer Inc | Groton, CT | (ISNE) | 74.5 GWh | Dec 1947 | Jun 2024 | Natural Gas : 96.5% Distillate Fuel Oil : 3.5% |
| Pfizer Groton Fuel Cell | Groton Fuel Cell 1 LLC | Groton, CT | (ISNE) | 44.8 GWh | Sep 2016 | Dec 2023 | Natural Gas |
| Pepperidge Farm Bloomfield | Pepperidge Farm, Inc.- Bloomfield | Bloomfield, CT | (ISNE) | 17.5 GWh | Jul 2008 | Dec 2023 | Natural Gas |
| Park Solar | Ecos Energy LLC | Woodbridge, CT | (ISNE) | 20.0 MWh | Nov 2023 | Dec 2023 | Solar |
| Nutmeg Solar | Nutmeg Solar LLC | Enfield, CT | (ISNE) | 39.7 GWh | Nov 2020 | Dec 2022 | Solar |
| Norwich WWTP | City of Norwich - (CT) | Norwich, CT | (ISNE) | 1.0 MWh | Apr 2006 | Mar 2024 | Distillate Fuel Oil |
| Norwalk Hospital Plant | Norwalk Hospital | Norwalk, CT | (ISNE) | 5.6 GWh | Apr 1992 | Dec 2022 | Natural Gas |
| North Stonington Solar Center, LLC | Adapture Renewables, Inc. | North Stonington, CT | (ISNE) | 5.2 GWh | Sep 2022 | Dec 2022 | Solar |
| North Main Street | City of Norwich - (CT) | Norwich, CT | (ISNE) | 139.9 MWh | Jul 1972 | May 2023 | Distillate Fuel Oil |
| Norden 1-3 | Third Taxing District of Norwalk | Norwalk, CT | (ISNE) | 45.1 MWh | May 2004 | Dec 2022 | Distillate Fuel Oil |
| Niagara Bottling - Bloomfield | Westbound Solar 3, LLC | Bloomfield, CT | (ISNE) | 50.0 MWh | Oct 2022 | Dec 2022 | Solar |
| New Milford Gas Recovery | WM Renewable Energy LLC | New Milford, CT | (ISNE) | 5.9 GWh | Apr 2008 | Dec 2023 | Landfill Gas |
| New Haven Harbor | Generation Bridge II Connecticut, LLC | New Haven, CT | (ISNE) | 16.4 GWh | Jun 1975 | Jun 2024 | Natural Gas : 68.6% Kerosene : 27.6% Residual Fuel Oil : 3.8% |
| Naval Sub Base New London Fuel Cell | Groton Station Fuel Cell, LLC | Groton, CT | (ISNE) | 36.4 GWh | Nov 2022 | Dec 2023 | Natural Gas |
| Montville Station | NRG Montville Operations Inc | Uncasville, CT | (ISNE) | 97.4 GWh | Dec 1953 | Dec 2022 | Residual Fuel Oil : 78.4% Natural Gas : 20.4% Distillate Fuel Oil : 1.2% |
| Millstone | Dominion Energy Nuclear Conn Inc | Waterford, CT | (ISNE) | 16.2 TWh | Nov 1975 | Jun 2024 | Nuclear |
| Milford Power Project | Milford Power Co LLC | Milford, CT | (ISNE) | 3.8 TWh | Jan 2004 | Jun 2024 | Natural Gas |
| Middletown | Middletown Power LLC | Middletown, CT | (ISNE) | 187.1 GWh | Sep 1958 | Dec 2022 | Residual Fuel Oil : 69.9% Natural Gas : 29.9% |
| Medtronic - New Haven 2 | Bloom Energy | North Haven, CT | (ISNE) | 18.4 GWh | Sep 2020 | Dec 2023 | Natural Gas |
| Medtronic - New Haven | Bloom Energy | North Haven, CT | (ISNE) | 15.2 GWh | Sep 2020 | Dec 2023 | Natural Gas |
| McHenry Solar | Ecos Energy LLC | Hampton, CT | (ISNE) | 1.7 GWh | Sep 2021 | Dec 2023 | Solar |
| Manchester Community College North | Onyx Asset Services Group | Great Path, CT | (ISNE) | 1.7 GWh | Sep 2018 | Dec 2022 | Solar |
| Manchester Community College East | Onyx Asset Services Group | Manchester, CT | (ISNE) | 1.7 GWh | Sep 2018 | Dec 2022 | Solar |
| Madison Solar | Ecos Energy LLC | Somers, CT | (ISNE) | 1.7 GWh | Dec 2020 | Dec 2023 | Solar |
| LNG 1 & 2 | Connecticut Mun Elec Engy Coop | Norwich, CT | (ISNE) | 669.5 MWh | Mar 2010 | Dec 2023 | Distillate Fuel Oil |
| Lebanon Pines 1 & 2 | Connecticut Mun Elec Engy Coop | Lebanon, CT | (ISNE) | 672.2 MWh | Mar 2010 | Dec 2023 | Distillate Fuel Oil |
| Lake Road Generating Plant | Lake Road Generating Co LP | Dayville, CT | (ISNE) | 6.2 TWh | Feb 2002 | Jun 2024 | Natural Gas |
| Kleen Energy Systems Project | Kleen Energy Systems, LLC | Middletown, CT | (ISNE) | 3.1 TWh | Jun 2011 | Jun 2024 | Natural Gas : 99.4% Distillate Fuel Oil : 0.6% |
| Kimberly Clark-Unit 1,2,3 | Kimberly-Clark Corporation | New Milford, CT | (ISNE) | 236.0 GWh | Mar 2008 | Dec 2023 | Natural Gas |
| Jewett City 1 | Connecticut Mun Elec Engy Coop | Jewett City, CT | (ISNE) | 242.5 MWh | Jan 2010 | Dec 2023 | Distillate Fuel Oil |
| Jefferson Solar | Ecos Energy LLC | Lebanon, CT | (ISNE) | 1.6 GWh | Dec 2017 | Dec 2023 | Solar |
| Jackson Solar (CT) | Ecos Energy LLC | Griswold, CT | (ISNE) | 1.6 GWh | Nov 2019 | Dec 2023 | Solar |
| IKEA New Haven Rooftop PV & Fuel Cell | IKEA Property Inc | New Haven, CT | (ISNE) | 2.0 GWh | Jun 2012 | Dec 2023 | Natural Gas : 65.8% Solar : 34.2% |
| IBM Southbury | Bloom Energy | Southbury, CT | (ISNE) | 5.7 GWh | Oct 2014 | Dec 2022 | Natural Gas |
| HSCo CHP | Cartier Energy, LLC | Hartford, CT | (ISNE) | 28.8 GWh | Sep 2009 | Dec 2022 | Natural Gas |
| Hartford Landfill Solar EGF | Materials Innovation Recycling Authority | Hartford, CT | (ISNE) | 1.5 GWh | May 2014 | Dec 2023 | Solar |
| Hartford Hospital Cogeneration | Cartier Energy, LLC | Hartford, CT | (ISNE) | 53.0 GWh | Jun 1988 | Dec 2022 | Natural Gas |
| Hamilton Solar | Ecos Energy LLC | Lebanon, CT | (ISNE) | 1.6 GWh | Feb 2018 | Dec 2023 | Solar |
| Goodwin Hydroelectric | Metropolitan Dist of Hartford | W. Hartland, CT | (ISNE) | 13.8 GWh | Mar 1986 | Dec 2023 | Water |
| Generate Colchester Fuel Cells, LLC | Generate Colchester Fuel Cells, LLC | Colchester, CT | (ISNE) | 88.2 GWh | Sep 2021 | Dec 2023 | Natural Gas |
| GenConn Middletown LLC | GenConn Middletown LLC | Middletown, CT | (ISNE) | 4.3 GWh | May 2011 | Dec 2023 | Kerosene : 84.5% Natural Gas : 15.5% |
| GenConn Devon LLC | GenConn Devon LLC | Milford, CT | (ISNE) | 2.3 GWh | May 2010 | Dec 2023 | Kerosene : 96.0% Natural Gas : 4.0% |
| Gary Court 1 & 2 | Connecticut Mun Elec Engy Coop | Groton, CT | (ISNE) | 561.6 MWh | Jun 2010 | Dec 2023 | Distillate Fuel Oil |
| Fusion Solar Center LLC | Fusion Solar Centre, L.L.C | Baltic, CT | (ISNE) | 41.8 GWh | Feb 2018 | Jun 2024 | Solar |
| Frito Lay Incorporated | Frito Lay Incorporated Dayville | Dayville, CT | (ISNE) | 25.5 GWh | Feb 2009 | Jun 2024 | Natural Gas |
| Franklin Solar | Ecos Energy LLC | Lebanon, CT | (ISNE) | 1.6 GWh | Feb 2018 | Dec 2023 | Solar |
| Franklin Drive | Connecticut Jet Power LLC | Torrington, CT | (ISNE) | 331.4 MWh | Oct 1968 | Dec 2022 | Kerosene |
| Foxwoods CoGen | Foxwoods Resort Casino | Mashantucket, CT | (ISNE) | 11.5 GWh | May 2010 | Dec 2023 | Natural Gas |
| Fort Hill 1, 2, 3 & 4 | Connecticut Mun Elec Engy Coop | Uncasville, CT | (ISNE) | 949.0 MWh | Jul 2010 | Jun 2024 | Distillate Fuel Oil |
Browse Power Plants By Connecticut Counties
Figures are based on May 2024 generation numbers.| County | State Rank | Active Plants | May 2024 Generation |
|---|---|---|---|
| Northwest Hills Planning Region, CT | # 9 | 15 | 98.1 GWh |
| Western Connecticut Planning Region, CT | # 8 | 14 | 337.6 GWh |
| Capitol Planning Region, CT | # 7 | 49 | 767.0 GWh |
| Lower Connecticut River Valley Planning Region, CT | # 6 | 15 | 3.3 TWh |
| South Central Connecticut Planning Region, CT | # 5 | 22 | 4.1 TWh |
| County | State Rank | Active Plants | May 2024 Generation |
|---|---|---|---|
| Naugatuck Valley Planning Region, CT | # 4 | 13 | 6.3 TWh |
| Northeastern Connecticut Planning Region, CT | # 3 | 17 | 6.3 TWh |
| Greater Bridgeport Planning Region, CT | # 2 | 10 | 6.9 TWh |
| Southeastern Connecticut Planning Region, CT | # 1 | 50 | 17.2 TWh |