Gov. J.B. Pritzker speaks at G&W Electric Co. in Bolingbrook on April 15, 2024, to highlight its microgrid, which includes one of the largest batteries in the country. Also pictured (left to right): Bolingbrook Mayor Mary Alexander-Basta, Commonwealth Edison CEO Gil Quiniones and G&W chair and owner John Mueller. (Andrew Adams / Capitol News Illinois)
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Even as solar projects have boomed in Illinois in recent years, the head of the state agency responsible for approving renewable projects said changes to state law may be necessary to phase out fossil fuels by 2050.

Wind turbines at the Mendota Hills Wind Farm in Steward, Illinois. (Tom Shockey / Flickr)

By 2025, at least 25% of the Illinois’ energy must come from renewable sources, like wind or solar. But projections by the Illinois Power Agency find that without changes to current policy, the state could fall short.