Power Plants in Illinois

594 plants · 58.8 GW total capacity

Illinois has 594 power plants with 58.8 GW total capacity. The generation mix includes 388 solar, 70 gas, 62 wind plants.

Largest is Byron Generating Station (2450 MW Nuclear); oldest active is Dayton Hydro (1925); newest is KA361 (2026); top owner is Generate Capital (36 plants).

448 interconnection queue projects in Illinois totaling 85.1 GW of proposed capacity.

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By Fuel Type

Solar
388 plants · 8 GW
Gas
70 plants · 19.8 GW
Wind
62 plants · 9.9 GW
Oil
34 plants · 742 MW
other
14 plants · 183 MW
Coal
8 plants · 7.3 GW
Hydro
8 plants · 45 MW
Nuclear
6 plants · 12.4 GW
Battery
4 plants · 376 MW

All Plants (sorted by capacity)

Queue Projects in Illinois (448 projects)

Showing top 50 of 448 projects by capacity.