https://www.illinoissfa.com/residential-solar/
Residential Solar provides residents access to affordable on-site solar panels through our qualified and vetted solar companies called Approved Vendors.
https://www.energysage.com/local-data/solar/il/
The average Illinois homeowner needs a 12.02 kW solar panel system to cover their electricity needs, which comes out to $35,795 before incentives. Prices range ...