Illinois electricity rates in July 2021 averaged 13.23 cents per kilowatthour -- an estimated 5 percent less than the 13.90 cents per kilowatthour average rate in the U.S. overall in July 2021.
Illinois natural gas rates in July 2021 averaged 22.21 dollars per thousand cubic feet -- an estimated 11 percent more than the 19.94 dollars per thousand cubic feet average rate in the nation overall in July 2021.
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Illinois has an estimated population of 12,830,632, which ranks 7th in the nation. 
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For more information about energy in Illinois, or to learn more about IL energy, visit the EIA.