About SPM

33 Years, 30,000 Customers, One Referral at a Time

Dave Sonner has been remodeling Illinois homes since the early 1990s: windows first, then siding, then solar in 2001. This is his thank-you to the customers who made it happen. One project turns into a referral, then another, the way Chris went from a ground-mount solar system to new windows for his business and then signed three more contracts. Free estimates, no pressure, across windows, siding, solar, batteries, and commercial energy.