Illinois Solar Incentives & Panel Installation

Most Illinois residential solar systems range from $15,000-$30,000. The 30% federal residential solar tax credit (Section 25D) expired December 31, 2025. Illinois homeowners can still benefit from Illinois Shines SREC payments, the Illinois 20-year property tax exemption, and ComEd rebates on qualifying equipment. SPM also offers $0 down financing.

SPM customers save an average of $210/month on their electric bills. Actual savings depend on your system size, current usage, and local net metering rates.

Yes. Modern solar panels generate electricity from daylight, not direct sunlight or heat. Illinois receives enough annual sunlight to make solar economically viable, especially with net metering credits that roll over month to month.

Most residential installations take 1-2 days. Permitting and utility interconnection typically add 4-8 weeks before the system goes live.

The 30% federal residential solar tax credit (Section 25D) expired December 31, 2025. Illinois homeowners can still take advantage of: Illinois Shines SREC payments (paid per kWh produced over the life of the system), the Illinois 20-year property tax exemption for solar installations, and ComEd rebates on qualifying heat pumps and appliances paired with solar. Commercial customers can still claim the commercial ITC (Section 48E) on new projects placed in service by December 31, 2027.

No. Solar panels work on their own and still earn Illinois Shines SREC payments without a battery. A battery is optional and mainly adds backup power during ComEd outages plus more control over when you use stored energy versus exporting it.

Under the Climate and Equitable Jobs Act, systems interconnected after December 31, 2024 move to supply-only net metering: export credits are based on the supply portion of your rate rather than your full retail rate. Systems interconnected before that date generally keep their prior net metering terms. SPM confirms your exact interconnection status before you sign.

No, not for 20 years. Illinois exempts the added home value from a solar installation from property tax increases for 20 years, so you get the resale value bump without a higher tax bill during that window.

It depends on your usage, roof, and how much demand you've already reduced. SPM starts with a whole-home energy assessment (bills, envelope, HVAC) before sizing solar, so most customers end up with a smaller, cheaper system than one sized around their current, unreduced usage.

Residential solar panels typically run from about 350W to 450W per panel; panels in the 550W to 600W range are more common on commercial and utility-scale arrays, not standard home installs. A higher-wattage panel means fewer panels for the same system size, but the right count and wattage mix for your roof, and how much of your usage that system covers, depends on your available space, shading, and current energy usage. SPM confirms the exact panel model, wattage, count, and expected output for your home after the whole-home energy assessment, not a generic size chart.

SPM services and troubleshoots the solar systems it installs, including diagnosing inverter issues, throughout Chicagoland and northern Illinois. Your inverter carries a manufacturer warranty, and SPM reviews your specific coverage and service options with you as part of your installation. Contact SPM directly for a service call on a system it installed.