Watts Up is a great solar company! I have been so happy with my results! They did most of the start up paper work, making the purchase relatively easy. And I have been getting 70% of my yearly electricity from my panels for the last 4 years as they predicted. My panels were installed early enough that they didn't put up critter guards in the initial installation (they always do, now), and the pigeons came and nested under the panels. But Watts Up came, removed the panels, cleaned the roof, and replaced the panels with critter guard. Instantly I had fewer pigeons. They are still wondering what happened, but mostly gone! Thanks, Watts Up!