Every day I bike or drive around our area and see all the houses with naked roofs. These roofs are just sitting there absorbing solar energy, but they have no way to use that energy. Capturing that solar energy is now easier and more affordable then ever before. A roof mounted solar power array will harvest that energy as DC electricity, producing current flow to an Inverter that converts the DC to 240 volt AC household current. This energy is then consumed by the house and any excess will "sell" back to the power grid, reducing you electric bill. The energy can also be stored in batteries to be used during power outages.  It is very easy to modernize your roof