I recently had Sun Valley Solar design and install a rooftop solar system for our home in Arizona. From start to finish they did an excellent professional job and we are very happy with our system. It produces the kWh the engineer said it would, is very easy to use and can be monitored from my phone. I recommend Sun Valley Solar Solutions for anyone considering a solar system. Customer satisfaction is a high priority for them and they keep you fully informed every step of the way. They work well with APS and take care of all the application details so you don't have to.