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.^[2] 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.^[1]

Retired plants:

• Connecticut Yankee Nuclear Power Plant: 560 MW, operated 1968-1996

The last coal-fired plant was retired in 2021.^[4]

^A Multi-fuel plant, listed is "total net summer capacity" by source.
^B Not to be confused with the historic Cos Cob Power Station

^A Multi-fuel plant, listed is "total net summer capacity" by source.

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

^A Multi-fuel plant, listed is "total net summer capacity" by source.

^A Multi-fuel plant, listed is "total net summer capacity" by source.

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

• List of power stations in the United States
• List of wind farms in the United States