Directory of Power Plants in Connecticut
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Kleen Energy Systems Project | Kleen Energy Systems, LLC | Middletown, CT | ISO New England (ISNE) | 3.3 TWh | Jun 2011 | Apr 2025 | Natural Gas : 99.3% Distillate Fuel Oil : 0.7% |
| Kimberly Clark-Unit 1,2,3 | Kimberly-Clark Corporation | New Milford, CT | ISO New England (ISNE) | 219.0 GWh | Mar 2008 | Dec 2024 | Natural Gas |
Browse Power Plants By Connecticut Counties
Figures are based on March 2025 generation numbers.| County | State Rank | Active Plants | Mar 2025 Generation |
|---|---|---|---|
| Northwest Hills Planning Region, CT | # 9 | 15 | 66.6 GWh |
| Western Connecticut Planning Region, CT | # 8 | 15 | 178.3 GWh |
| Capitol Planning Region, CT | # 7 | 54 | 682.7 GWh |
| Lower Connecticut River Valley Planning Region, CT | # 6 | 16 | 3.5 TWh |
| South Central Connecticut Planning Region, CT | # 5 | 23 | 3.9 TWh |
| County | State Rank | Active Plants | Mar 2025 Generation |
|---|---|---|---|
| Naugatuck Valley Planning Region, CT | # 4 | 15 | 5.7 TWh |
| Northeastern Connecticut Planning Region, CT | # 3 | 17 | 6.2 TWh |
| Greater Bridgeport Planning Region, CT | # 2 | 10 | 7.2 TWh |
| Southeastern Connecticut Planning Region, CT | # 1 | 50 | 17.3 TWh |