Best Solar Installers in Illinois (2026)
Compare 10 top-rated solar companies in Illinois. Average cost: $2.86/W · 8-year payback.
Get Free Illinois Solar Quotes →All Solar Installers in Illinois
Elgin, IL · Founded 2005 · 1,690+ installs
Elgin Clean Energy is a leading solar installation company serving Illinois from their Elgin headquarters. Founded in 2005, they have built a strong reputation for quality installations and exceptiona...
Peoria, IL · Founded 2008 · 2,897+ installs
Apex Solar IL brings professional solar installation services to Peoria and surrounding Illinois communities. Since 2008, they have helped thousands of homeowners make the switch to clean, affordable ...
Naperville, IL · Founded 2014 · 7,000+ installs
Serving Illinois from their Naperville base, Blue Raven Solar Illinois is a trusted name in residential and commercial solar installation. Founded in 2014, they combine local expertise with industry-l...
Aurora, IL · Founded 2009 · 4,000+ installs
Based in Aurora, Momentum Solar Illinois has been serving Illinois homeowners since 2009 with top-quality solar installations. Their experienced team understands the local climate, permitting requirem...
Rockford, IL · Founded 2011 · 3,579+ installs
Illinois Sun Power brings professional solar installation services to Rockford and surrounding Illinois communities. Since 2011, they have helped thousands of homeowners make the switch to clean, affo...
Schaumburg, IL · Founded 2010 · 4,534+ installs
Based in Schaumburg, Schaumburg Solar Co has been serving Illinois homeowners since 2010 with top-quality solar installations. Their experienced team understands the local climate, permitting requirem...
Joliet, IL · Founded 2012 · 10,000+ installs
Sunnova Illinois brings professional solar installation services to Joliet and surrounding Illinois communities. Since 2012, they have helped thousands of homeowners make the switch to clean, affordab...
Springfield, IL · Founded 2016 · 3,060+ installs
Serving Illinois from their Springfield base, PowerHome Solar IL is a trusted name in residential and commercial solar installation. Founded in 2016, they combine local expertise with industry-leading...
Chicago, IL · Founded 2012 · 4,000+ installs
Based in Chicago, ADT Solar Illinois has been serving Illinois homeowners since 2012 with top-quality solar installations. Their experienced team understands the local climate, permitting requirements...
Champaign, IL · Founded 2013 · 4,113+ installs
Serving Illinois from their Champaign base, Illinois Solar Solutions is a trusted name in residential and commercial solar installation. Founded in 2013, they combine local expertise with industry-lea...
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Frequently Asked Questions
How do I choose the best solar installer in Illinois?▼
Get at least 3 quotes from different Illinois solar installers. Verify licensing and insurance, check reviews on Google and BBB, ask about NABCEP certification, and compare warranty offerings. Look for installers with at least 5 years of experience and knowledge of Illinois's specific permits and incentives.
How much does solar cost in Illinois?▼
The average cost of solar in Illinois is $2.86 per watt before incentives. For a typical 8kW system, that's approximately $22,880 before the 30% federal tax credit. Get multiple quotes to ensure you're getting a fair price.
What solar incentives are available in Illinois?▼
All Illinois homeowners can claim the 30% federal solar Investment Tax Credit (ITC). Additional incentives include: IL Shines SREC program. Solar installations are exempt from property tax increases.
How long does solar installation take in Illinois?▼
The physical installation typically takes 1-3 days. However, the full process from contract signing to system activation usually takes 4-12 weeks, with most of that time spent on permitting and utility approval. Timelines vary by installer and local jurisdiction in Illinois.
Should I get a solar lease or buy in Illinois?▼
Buying (with cash or a solar loan) typically provides the best long-term value since you own the system and receive all incentives. However, leases and PPAs require no upfront cost and still save on electricity. In Illinois, with a 8-year average payback period, buying usually makes financial sense if you can afford the upfront investment.