Directory of Power Plants in Connecticut
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Pfizer Groton Plant | Pfizer Inc | Groton, CT | ISO New England (ISNE) | 74.5 GWh | Dec 1947 | Jun 2024 | Natural Gas : 96.5% Distillate Fuel Oil : 3.5% |
| Pratt & Whitney | United Technologies | East Hartford, CT | ISO New England (ISNE) | 138.8 GWh | Dec 1991 | Jun 2024 | Natural Gas : 99.8% |
| Pepperidge Farm Bloomfield | Pepperidge Farm, Inc.- Bloomfield | Bloomfield, CT | ISO New England (ISNE) | 17.5 GWh | Jul 2008 | Dec 2023 | Natural Gas |
| Pfizer Groton Fuel Cell | Groton Fuel Cell 1 LLC | Groton, CT | ISO New England (ISNE) | 44.8 GWh | Sep 2016 | Dec 2023 | Natural Gas |
| Plainfield Solar 2 | Ecos Energy LLC | Plainfield, CT | ISO New England (ISNE) | 1.5 GWh | Mar 2020 | Dec 2023 | Solar |
| Plainfield Solar 1 | Ecos Energy LLC | Plainfield, CT | ISO New England (ISNE) | 1.5 GWh | Dec 2019 | 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 |
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 |