CT · State grid profile
Connecticut power grid
Connecticut's operating portfolio is led by Oil & gas, followed by Nuclear. Its 190 plants represent 10,828 MW of nameplate capacity. The dataset also reports 799 MW of proposed capacity.
Final 2024 state totalsPreliminary 2025 facilitiesCommunity-reported data centers
Coverage quality
What is complete here?
Generation portfolio
Connecticut capacity by fuel
Oil & gas73.2%7,931 MW
Nuclear20.9%2,260 MW
Solar3%323 MW
Biomass1.5%161 MW
Hydro1.4%147 MW
Wind0%5 MW
Storage0%2 MW
Facility intelligence
Largest Connecticut power plants
| Plant | Primary fuel | Location | Utility | Operating capacity |
|---|---|---|---|---|
| MillstonePlant 566 | Nuclear | Waterford, CTNew London County | Dominion Energy Nuclear Conn Inc | 2,260 MW |
| CPV Towantic Energy CenterPlant 56047 | Oil & gas | Oxford, CTNew Haven County | CPV Towantic, LLC | 842 MW |
| Lake Road Generating PlantPlant 55149 | Oil & gas | Dayville, CTWindham County | Lake Road Generating Co LP | 840 MW |
| MiddletownPlant 562 | Oil & gas | Middletown, CTMiddlesex County | Middletown Power LLC | 786 MW |
| Kleen Energy SystemsPlant 56798 | Oil & gas | Middletown, CTMiddlesex County | Kleen Energy Systems, LLC | 693 MW |
| New Haven SteamPlant 6156 | Oil & gas | New Haven, CTNew Haven County | Generation Bridge II Connecticut, LLC | 642 MW |
| Milford Power ProjectPlant 55126 | Oil & gas | Milford, CTNew Haven County | Milford Power Co LLC | 578 MW |
| Bridgeport StationPlant 568 | Oil & gas | Bridgeport, CTFairfield County | Generation Bridge II Connecticut, LLC | 576 MW |
| Bridgeport Energy ProjectPlant 55042 | Oil & gas | Bridgeport, CTFairfield County | Bridgeport Energy LLC | 520 MW |
| Montville StationPlant 546 | Oil & gas | Uncasville, CTNew London County | Montville Power LLC | 495 MW |
Methodology
Transparent by design
State totals and fuel mix use finalized EIA-860 2024 generator data. The facility table uses the EIA-860 2025 Early Release and is preliminary. Data-center counts use OpenStreetMap community records and measure mapped coverage, not the full market.