Top Solar Companies in Illinois
0+ verified contractors in Illinois. Compare pricing, read reviews, and find the best fit for your project.
Illinois punches above its sunshine. Cloudier than the Sun Belt, it nonetheless has some of the Midwest's strongest solar incentives through the Illinois Shines program, which pays for 15 years of your system's renewable energy credits. The 2026 picture has two big moving parts: the federal residential tax credit has expired, and Illinois replaced full retail net metering with a supply-only successor in 2025. Here is how solar pencils out in Illinois in 2026.
There are 0+ verified companies serving Illinois. Whether you need installation, removal, battery storage, or ongoing maintenance, Top Solar Services makes it easy to compare local contractors by reviews, pricing, and credentials. Every listed company has been vetted through our human-led process. Use the filters below to narrow by city, rating, or project size.
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How much do solar panels cost in Illinois in 2026?
A typical residential solar system in Illinois runs $3.00–$3.05 per watt installed. Most homes need a ~12–13 kW system, which lands at roughly $32,000–$44,000 before incentives before incentives, with a payback period of roughly 10–13 years once Illinois Shines SREC payments are included. With local electricity at about ~17¢/kWh (ComEd serves the north; Ameren serves central and southern Illinois), every kilowatt-hour you self-generate is worth that much off your bill.
Sticker prices look high because Illinois homes need larger arrays, but the Illinois Shines REC payment is what makes the real payback competitive — published cost-only payback figures that exclude it overstate the true number.
Sources: EnergySage — Illinois solar prices (2026) Illinois Shines (Adjustable Block Program)
What solar incentives are available in Illinois in 2026?
The federal residential tax credit ended on December 31, 2025, so Illinois's state, utility, and financing-based incentives now do the heavy lifting. Here is the current stack.
Federal residential credit (Section 25D) — EXPIRED
Buying a home system in 2026 earns $0 federal credit; the 30% credit ended December 31, 2025. A lease or PPA can still capture the commercial 48E credit through the system owner. IRS — One Big Beautiful Bill FAQ
Illinois Shines (SRECs)
The state buys 15 years of your system's renewable energy credits through an approved vendor. Small homes (25 kW or less) are typically paid a single lump sum upfront; the 2026–27 program year opened June 1, 2026 with REC prices proposed roughly 34–43% higher than the prior year. Blocks can fill and move projects to a waitlist, so apply early. Illinois Shines
Smart Inverter / Distributed Generation Rebate
ComEd and Ameren pay about $300 per kW of solar (and for qualifying storage) upfront when you enroll your smart inverter/battery in the utility's DG program. Note that taking the rebate puts you on supply-only net metering. ComEd — solar rebates
Illinois Solar for All
Income-qualified households (≤80% area median income) can go solar at no upfront cost. Single-family capacity filled in 2025; new 2026 funding opened in June, with applicants joining a waitlist through approved vendors. Illinois Solar for All
Property-tax special assessment
Illinois law shields the added home value from solar from property-tax assessment, so installing solar generally does not raise your property taxes. EnergySage — IL incentives
How does net metering work in Illinois in 2026?
Illinois ended full retail net metering on January 1, 2025 under the Climate and Equitable Jobs Act. Systems that were operational before that date are grandfathered into full retail net metering (for ComEd, up to ~30 years). New 2026 systems get a supply-only successor: exported power offsets only the supply and transmission parts of your bill, not delivery charges or fixed fees. That shift makes self-consumption and battery storage more valuable, and it pairs with the Smart Inverter / DG rebate above. The change applies in both ComEd and Ameren territories. ComEd net-metering changes (2026)
How do you vet a solar installer in Illinois?
1. Verify the license
To earn Illinois Shines REC payments your system must be installed by an Illinois Shines Approved Vendor (or its designee) — a strong baseline filter. Electrical work is licensed at the municipal level, and the Illinois Power Agency maintains the Approved Vendor list you can check directly. Check it at the Illinois Shines approved vendors + IDFPR electrical licensing.
2. Check certifications and insurance
Confirm the company is a current Illinois Shines Approved Vendor, look for NABCEP certification, verify $1M+ general liability plus workers' compensation, and get the SREC payment estimate and net-metering terms in writing before signing.
3. Read verified reviews and get it in writing
Every company on this page has already cleared our human-led verification, but always read recent reviews, ask for two or three local references, and get the production estimate, warranty terms, and incentive assumptions in writing before you sign.
Solar by city in Illinois
Local utility rules and rebates vary across Illinois. Browse vetted installers in the state's largest metros:
- Solar installers in Chicago
The largest market in the state; ComEd territory with strong rooftop and community-solar demand.
- Solar installers in Aurora
Illinois's second-largest city, in the Chicago metro and ComEd territory.
- Solar installers in Naperville
Affluent western suburb — note Naperville runs a municipal electric utility, so confirm its net-metering terms separately.
- Solar installers in Rockford
Northern Illinois, ComEd territory.
- Solar installers in Springfield
Central Illinois; Ameren territory (parts of the city are served by the municipal CWLP — verify your utility).
Is commercial solar worth it in Illinois in 2026?
Illinois is a genuinely strong commercial solar market. Businesses keep the 30% federal credit through Section 48E plus MACRS depreciation; Illinois Shines pays large distributed-generation and community-solar projects (up to 5 MW); and the state's CEJA mandates — 40% renewables by 2030, 50% by 2040 — keep utility and corporate demand high in both ComEd and Ameren territories.
Explore commercial solar installers in Illinois, compare the broader commercial solar contractor directory, or read our guide to 2026 tariff and tax-credit changes for commercial buyers.
Compare nearby states
Solar companies in Indiana · Solar companies in Wisconsin · Solar companies in Iowa · Solar companies in Missouri
People Also Ask
Who are the top solar companies in Illinois in 2026?
Our directory ranks the top 0+ solar companies in Illinois by verified review score, NABCEP certification status, warranty terms, and project completion rate. The shortlist is led by locally-owned, NABCEP-certified installers concentrated in the state's largest metros. Use the filters above to compare by city, rating, and service type.
How much does solar installation cost in Illinois?
Most residential solar systems in Illinois cost $15,000–$30,000 installed in 2026. Pricing depends on system size, panel tier, roof complexity, and whether you add battery storage.
What solar incentives are available in Illinois?
Illinois solar incentives vary by utility and program year — your installer should walk you through every rebate, tax credit, and net-metering option that applies to your address. The federal residential 25D credit expired December 31, 2025.
How do I verify a solar contractor's license in Illinois?
Every state maintains a contractor licensing database — typically operated by the state's Department of Consumer Affairs, Contractors State License Board, or Board of Electrical Contractors. Ask the contractor for their license number and verify it directly. Top Solar Services confirms license status before issuing the Verified or Premier Verified badge.
Is solar worth it in Illinois without the federal tax credit?
For many Illinois homeowners, yes — particularly where retail electricity rates are high, net metering exists at retail or near-retail rates, and state rebate or SREC programs apply. The federal residential 25D credit expired December 31, 2025, which has stretched typical payback periods, but lifetime savings on a 25-year system remain positive in most cases. Solar leases and PPAs (third-party owned systems) may still capture the commercial 48E credit indirectly through pricing.
Frequently Asked Questions About Solar in Illinois
How much does solar installation cost in Illinois?
Most residential solar systems in Illinois cost $15,000–$30,000 installed. The federal residential solar tax credit (Section 25D) expired December 31, 2025; pricing now depends on system size, panel tier, roof complexity, battery additions, and state or utility rebates.
Are there solar incentives in Illinois?
The federal residential solar tax credit (Section 25D) expired December 31, 2025, so homeowners can no longer claim the 30% ITC on residential installations. Many Illinois utilities still offer rebates or net metering programs, and solar leases and PPAs may still benefit from the commercial 48E credit passed to lessors.
How do I find a licensed solar contractor in Illinois?
Look for contractors with a valid Illinois contractor license, NABCEP certification, and verified reviews on Top Solar Services. Every company on this page has been vetted through our human-led verification process.
How many solar companies are in Illinois?
Top Solar Services lists 0+ verified solar companies in Illinois, covering installation, removal, battery storage, commercial projects, and ongoing maintenance.
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