Solar Panel Wash has been approved by SolarWorld, America’s Largest Solar Manufacturer since 1975. We have also received an approval from Canadian Solar who is one of the three biggest solar companies in the world by revenue and 4 additional panel manufacturer approvals. Along with manufacturer approvals we have testimonials from end users describing how pleased they are with the performance of SPW™. Please see the sidebar for these approvals and testimonials.Get the maximum output from your panels with American Polywater’s Solar Panel Wash.