Installers, contractors and solar service companies whose service area covers Illinois.
Illinois has quietly become one of the country's biggest solar states: more than 9.3 gigawatts are installed — sixth in the nation — and 2025 alone added about 1.7 gigawatts and $2.9 billion in investment. The state's Climate and Equitable Jobs Act targets 100% clean energy by 2050, and the programs below are a big reason rooftops keep multiplying from Chicago to Carbondale.
The centerpiece for homeowners is Illinois Shines: the state buys the renewable energy credits your system produces through an approved vendor, and that REC payment — often worth thousands of dollars — comes off your cost. ComEd and Ameren Illinois add distributed generation rebates of $300 per kW for residential systems, with a matching rebate available when you add battery storage. Since 2025, new customers interconnect under net billing: power you use yourself offsets retail purchases one-for-one, and excess generation is credited hourly at the supply portion of the retail rate — energy, capacity, and transmission. (Systems interconnected before 2025 keep full retail net metering.)
The installers below serve homeowners across Illinois. Ask each one to confirm your Illinois Shines REC payment and utility rebate before you sign, and browse our solar energy resources for guides to system sizing, storage, and comparing quotes.
