Geeze - the problem with the initial solar solution was its efficiency. The firefighter was right to not be very impressed. However, it was a good starting point. Now there are solar solutions that capture ambient and radiant heat, converting it into usable electricity. Phoenix certainly has a lot of that, especially during the summer. According to this College Station roofer, the solar roofing solution that should be used is completely dependent on type of infrastructure it needs to power. In other words a rooftop solar system will not generate a lot of electricity for an wide area, but is more suited to an individual building. There are tons of other huge solar solutions that will do a much better job of providing electricity to Phoenix.