Looks that is rapidly changing. LOL
"As of 2023, Illinois generates 54.89% of electricity from nuclear power, 31.58% from fossil fuels (comprising of coal, natural gas, petroleum, and other gases), and 13.53% from renewables (comprising of wind, solar, hydropower, and biomass). As far as renewable resources go, wind is leading as the state’s primary renewable energy source. In Illinois, a significant portion of the electricity mix is transitioning towards renewable sources. In 1990, renewable energy accounted for only 0.23% of Illinois' total in-state electricity generation. In 2023, that number has increased to 13.53%. With tens of thousands of new solar projects coming online, solar generation is poised to increase to help meet consumer interests and demand as well as state climate goals."