Directory of Power Plants in Connecticut
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| East Windsor Solar One | DG Connecticut III, LLC | East Windsor, CT | ISO New England (ISNE) | 6.5 GWh | Nov 2021 | Sep 2025 | Solar |
| East Windsor Solar Two | East Windsor Solar Two, LLC | East Windsor, CT | ISO New England (ISNE) | 749.0 MWh | Aug 2025 | Dec 2025 | Solar |
| Emerald Gardens PKI, LLC | Emerald Gardens PKI, LLC | Shelton, CT | ISO New England (ISNE) | 2.0 GWh | Sep 2021 | Dec 2025 | Solar |
| Enfield Solar One | Enfield Solar One, LLC | Hartford, CT | ISO New England (ISNE) | 8.3 GWh | Mar 2024 | Dec 2025 | Solar |
| East Windsor | NJR Clean Energy Ventures Corporation | East Windsor, CT | ISO New England (ISNE) | 869.0 MWh | Aug 2025 | Dec 2025 | Solar |
| Ellington - 277 Sadds Mill | Onyx Asset Services Group | Ellington, CT | ISO New England (ISNE) | 3.6 GWh | Feb 2024 | Dec 2025 | Solar |
Browse Power Plants By Connecticut Counties
Figures are based on May 2026 generation numbers.| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Southeastern Connecticut Planning Region, CT | # 1 | 52 | 18.1 TWh |
| Greater Bridgeport Planning Region, CT | # 2 | 10 | 6.7 TWh |
| Northeastern Connecticut Planning Region, CT | # 3 | 17 | 6.2 TWh |
| Naugatuck Valley Planning Region, CT | # 4 | 17 | 5.9 TWh |
| Lower Connecticut River Valley Planning Region, CT | # 5 | 16 | 3.8 TWh |
| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| South Central Connecticut Planning Region, CT | # 6 | 23 | 3.6 TWh |
| Capitol Planning Region, CT | # 7 | 61 | 853.4 GWh |
| Western Connecticut Planning Region, CT | # 8 | 15 | 246.3 GWh |
| Northwest Hills Planning Region, CT | # 9 | 15 | 98.0 GWh |