The Downstate Clean Energy Affordability Act, backed by utility Ameren, emphasizes utility-scale solar and storage.
The use of power purchase agreements for solar projects had been unclear before state regulators clarified last month.
Little Village residents worry pollution from truck traffic will be more harmful to the neighborhood than coal emissions.
Indiana, Michigan and Wisconsin so far have done little to make solar accessible to all, clean energy advocates say.
Two major bills aimed at getting the state to 100% renewable power would slightly increase charges on utility customers.