Sue L.
12/18/2025
I started my solar investigation in the spring of 2024 and the project was finished at the end of June 2024. I "interviewed" many companies, but Paul was my first and last sales person. Certasun...
Certasun
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1582 Barclay Blvd
Buffalo Grove, IL 60089
Certasun is a top-rated solar company serving the Chicago and Milwaukee areas. Headquartered in Buffalo Grove, Illinois, we provide residential solar, battery storage, and EV charger installation with integrity and professionalism. Why work with us? We have exceptional reviews. We will never outsource work to subcontractors. We guarantee the your system over its lifetime. We don't take installation shortcuts — your system will look great. We offer several financing options and will advise you about their pros and cons, but will let you decide if they are right for you.
Reviews
3.017 reviews
Jon C.
8/13/2022
When I started the process of looking for solar late last year Certasun was one of the companies that provided a quote. That was the last I heard from them. I emailed back asking follow up...
Gary S.
10/25/2022
Our SunPower Solar panel system installed by Certasun has been a great addition to our all electric Vernon Hills home for the last three years. The 31 solar panels have supplied 44% of our...
David M.
7/16/2022
I've been excitedly awaiting my solar panel quote for weeks. A couple days out from my appointment, I received one voicemail and email presuming my building is commercial. It isn't, which was...
Kate C.
9/27/2022
Certasun was by far the best choice! No more ComEd bills this summer! Normally we pay $150/mo for coal-generated electricity from ComEd in the summer months because of air conditioning. Now,...
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