Home Depot and Treehouse want to charge how much?! Very pleased with how quickly the guys put in our solar power and backup system. They matched the design HD and Treehouse quoted for us part for part then beat their price by around 10%! Had a very hard time finding a solar company that was willing to return our call, WWS has always been prompt in returning our requests. My husband loves the idea of having an emergency backup circuit in a standard grid-tie if the grid ever goes down. No problems with our system to this point. Most everything installed was made in the US which we like. Yvonne G