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Best Installation + Best Equipment = Best Results

We take pride in our installations and will never sub out the work to a third party.

We only use market-leading technology from SunPower.

As a result, our customers absolutely love us (we're the #1 rated Illinois solar installer on
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Turn sunlight into savings with Certasun, the Midwest's premier home solar company. We exclusively install SunPower, the most efficient and best warrantied panels on the market. With our No Surprises Guarantee, count on us for honest advice and quality work.
Year Established
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Associated product manufacturers

Associated financing companies

Workmanship Warranty

Our workmanship warranty is 10 years and includes a 10 year guarantee against roof leaks caused by the solar system.


Business Incorporation: 0676322-7


We are fully insured and bonded.


Certified by the State of Illinois to install solar.

Industry Certifications

  • Better Business Bureau
  • SunPower Elite Dealer

Manufacturer Certifications

  • Sunpower Authorized Dealer

What Customers Are Saying

3 reviews
Average Rating 3 review(s)
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Worst service and warranty!

I don’t know why people are giving them five stars. We bought a house a month ago with solar panels from Certasun. It turns out that the system is not working, and the former owner, whom we will sue for misleading us, didn't inform us, although he was receiving the information from the app. We contacted Jennifer Rickel and Paul Doughty from Certasun. Except for promises that they would fix the problem, Paul Doughty misled us that we needed to register with Comed by sending an address of SunPower. And we have an official answer from SunPower that Certasun is responsible for the warranty. So, for more than two months, we have been unable to use any electricity produced by our solar panel system. Besides, Certasun technical service phone never answers and the robot never reply!

Posted by adrian.a.nedelcu on Sep 15, 2022
Great experience and efficiently working solar panels

Great experience working with Certasun. Got the job done as promised and the solar panels are working efficiently.

Posted by sivanatarajan on Dec 15, 2021
Great Solar Project Management, High-Quality Panels

I got quotes from 3 different installers before choosing CertaSun. Their focus on solar (as opposed to broad electric contracting), use of SunPower panels with microinverters, and promise to pay the SREC subsidy regardless of legislation made me choose them. They managed process, from design, to permitting, to install, to inspection, to net metering smoothly. While I had many worries going in, CertaSun was very professional. Now, I check my SunPower app every day and can see the solar generation and excess going onto the grid. Looking forward to generations of folks benefiting from my decision to go with solar.

Posted by kjones60625 on Dec 02, 2021



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