List of power stations in Connecticut

This is a list of electricity-generating power stations in the U.S. state of Connecticut, sorted by type and name. In 2022, Connecticut had a total summer capacity of 10,108 MW through all of its power plants, and a net generation of 43,054 GWh. In 2023, the electrical energy generation mix was 61.3% natural gas, 34.2% nuclear, 1.1% biomass & refuse-derived fuels, 1% solar, 0.9% hydroelectric, 0.4% petroleum, and 1.1% other. Distributed small-scale solar, including customer-owned photovoltaic panels, delivered an additional net 1,243 GWh to the state's electricity grid in 2023. This compares as nearly three times the amount generated by Connecticut's utility-scale solar facilities.

Nuclear power stations
Retired plants:
 * Connecticut Yankee Nuclear Power Plant: 560 MW, operated 1968-1996

Coal
The last coal-fired plant was retired in 2021.

Petroleum
Multi-fuel plant, listed is "Total Net Summer Capacity" by source. Not to be confused with the historic Cos Cob Power Station

Natural gas
Multi-fuel plant, listed is "Total Net Summer Capacity" by source.

Geothermal
There were no utility-scale Geothermal facilities in the state of Connecticut in 2019.

Hydroelectric
Multi-fuel plant, listed is "Total Net Summer Capacity" by source.

Solar
Multi-fuel plant, listed is "Total Net Summer Capacity" by source.

Battery storage
There were no utility-scale Battery Storage facilities in the state of Connecticut in 2019.