From there I found this solar power site. The calculator make it seem like putting solar voltaic on the roof also make economic sense. After the walk in completed and back is landscaped the next project my just be solar power.
The California Solar Initiative provides incentives for us to upgrade into the 21st century. Part of Governor Arnold Schwarzenegger's Million Solar Roofs Program, California has set a goal to create 3,000 megawatts of new, solar-produced electricity by 2017.