Interested in investing in solar power but not sure it’ll work in your home or neighborhood? Google introduced a new tool, Project Sunroof, that can help you decide. It’s simple: Enter your address and let Project Sunroof go to work. By combining the aerial mapping used by Google Earth with information from other databases, Project Sunroof figures out how much sunlight hits your roof throughout the year, says Carl Elkin, who developed the idea as part of his recent 20% time for Google. The high-resolution mapping accounts for roof orientation, shade from trees and buildings, and local weather. The tool is in pilot phase, available only for addresses in Boston, Fresno, and the San Francisco Bay Area, but should be more widely available soon.
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