Illinois electricity rates in April 2021 averaged 14.04 cents per kilowatthour -- an estimated 2 percent more than the 13.76 cents per kilowatthour average rate in the U.S. overall in April 2021.
Illinois natural gas rates in April 2021 averaged 11.41 dollars per thousand cubic feet -- an estimated 7 percent less than the 12.21 dollars per thousand cubic feet average rate in the nation overall in April 2021.
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.