Profile Overview
Quick Facts
- Illinois is the sixth-largest energy-consuming state in the nation, and its industrial sector, which includes petroleum refining, coal mining, and agriculture, uses the most energy of any sector in the state.
- Illinois ranks fourth in the nation in crude oil refining capacity behind Texas, Louisiana, and California, and the state's 4 refineries can process nearly 1 million barrels of crude oil per calendar day.
- The estimated recoverable coal reserves in Illinois are the second-largest in the nation after Montana, and the state's coal mines account for about 6% of U.S. total coal production.
- Illinois is the third-largest ethanol-producing state and also the third-largest producer of biodiesel, and accounted for 10% of total U.S. production for both biofuels.
- Illinois generates more electricity from nuclear energy than any other state, and it provided about 13% of U.S. nuclear power generation in 2024.
Last Updated: October 16, 2025