This is a list of electricity-generating power stations in the U.S. state of Illinois, sorted by type and name. In 2022, Illinois had a total summer capacity of 44,163 MW and a net generation of 185,223 GWh through all of its power plants. In 2023, the electrical energy generation mix was approximately 54.9% nuclear, 15.9% natural gas, 15.3% coal, 12.4% wind, 1.1% solar, 0.2% biomass, 0.2% petroleum & other gases, 0.1% hydroelectric, and 0.1% other. Small-scale solar, which includes customer-owned photovoltaic panels, delivered an additional net 1,536 GWh of energy to the state's electrical grid in 2023. Illinois generated more energy from its six nuclear power stations than any other U.S. state in 2019. Legislation in 2016 and 2021 provided state financial incentives which delayed the closure of several plants.

Nuclear plants

Fossil-fuel plants

Coal

Only one of three original units remains in operation as of 2017. Unit 1 remains operational, as Unit 2 has been shuttered since 2016.

Natural gas

Renewable plants

Data from the U.S. Energy Information Administration serves as a general reference.

Wind

Solar photovoltaic

Hydroelectric

Biomass

Energy storage

Proposed power stations

Closed/Cancelled stations