How much usable sunlight your house roof get per year?

Google's Project Sunroof, the online tool enables you to type in your address and find out how much space you have for solar panels on your roof, how many hours of rooftop sunlight you’ll get a year, and how much money you’d save.



>> When you plug an address into the search page, you'll see a map of the roof areas with the most shade or sun exposure. You also get a listing of how much usable sunlight per year the roof could provide, as well as the available square footage available on that roof for solar panels.

>> A Google Earth image of your home and the surrounding neighborhood appears, with the roofs appearing in colors ranging from purple to yellow to indicate how much sunlight is striking the surface.

Note: The photos, however, appear in some cases to be at least one or two years old.

>> Project Sunroof looks up your home in Google Maps and combines that information with other databases to create your personalized roof analysis

>> Project Sunroof will also recommend the size of solar system that you should install based on your average electricity bill. And it calculates how much you’ll save depending on whether you opt to finance the solar array with a loan, by leasing, or by purchase. Then it presents the option to request a consultation with Google’s solar provider partners



But it is still a pilot and so far only available for residents of the San Francisco Bay Area, Boston, and Fresno, California and Google plans to extend it soon...!
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