Directory of Power Plants in Connecticut
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Stevenson | FirstLight Power Resources Services LLC | Monroe, CT | ISO New England (ISNE) | 117.9 GWh | Dec 1918 | Dec 2023 | Water |
| Scotland Dam | FirstLight Power Resources Services LLC | Windham, CT | ISO New England (ISNE) | 10.2 GWh | Dec 1936 | Dec 2023 | Water |
| Shepaug | FirstLight Power Resources Services LLC | Southbury, CT | ISO New England (ISNE) | 173.9 GWh | Dec 1954 | Dec 2023 | Water |
| South Meadow | NAES Corp | Hartford, CT | ISO New England (ISNE) | 1.5 GWh | Jul 1970 | Dec 2022 | Kerosene |
| Stamford Health | Stamford Health Systems, Inc. | Stamford, CT | ISO New England (ISNE) | 88.6 MWh | Dec 1983 | Dec 2022 | Distillate Fuel Oil |
| Sikorsky Aircraft CHP | Sikorsky Aircraft Corporation | Stratford, CT | ISO New England (ISNE) | 69.4 GWh | May 2010 | Dec 2023 | Natural Gas : 99.8% |
| Somers Solar Center, LLC | Onward Energy | Somers, CT | ISO New England (ISNE) | 8.2 GWh | Nov 2013 | Dec 2023 | Solar |
| Stafford MS Ground Mount Community Solar | Town of Stafford - (CT) | Stafford, CT | ISO New England (ISNE) | 3.5 GWh | Jun 2016 | Dec 2022 | Solar |
| Sherman Solar | Ecos Energy LLC | Griswold, CT | ISO New England (ISNE) | 1.6 GWh | Nov 2019 | Dec 2023 | Solar |
| South Windsor Fuel Cell | South Energy Investments LLC | South Windsor, CT | ISO New England (ISNE) | 42.0 GWh | Feb 2020 | Dec 2023 | Natural Gas |
| Sydney Solar | Ecos Energy LLC | Hampton, CT | ISO New England (ISNE) | 3.2 GWh | May 2020 | Dec 2023 | Solar |
| Southington Solar One | DG Connecticut III, LLC | Southington, CT | ISO New England (ISNE) | 9.0 GWh | Jan 2022 | Dec 2023 | Solar |
| Subase Microgrid Project | Connecticut Mun Elec Engy Coop | Groton, CT | ISO New England (ISNE) | 53.3 GWh | Nov 2022 | Dec 2023 | Natural Gas |
Browse Power Plants By Connecticut Counties
Figures are based on June 2024 generation numbers.| County | State Rank | Active Plants | Jun 2024 Generation |
|---|---|---|---|
| Southeastern Connecticut Planning Region, CT | # 1 | 50 | 17.2 TWh |
| Greater Bridgeport Planning Region, CT | # 2 | 10 | 6.9 TWh |
| Northeastern Connecticut Planning Region, CT | # 3 | 17 | 6.3 TWh |
| Naugatuck Valley Planning Region, CT | # 4 | 13 | 6.3 TWh |
| South Central Connecticut Planning Region, CT | # 5 | 22 | 4.1 TWh |
| County | State Rank | Active Plants | Jun 2024 Generation |
|---|---|---|---|
| Lower Connecticut River Valley Planning Region, CT | # 6 | 15 | 3.3 TWh |
| Capitol Planning Region, CT | # 7 | 49 | 767.0 GWh |
| Western Connecticut Planning Region, CT | # 8 | 14 | 337.6 GWh |
| Northwest Hills Planning Region, CT | # 9 | 15 | 98.1 GWh |