The new feature will analyse potential customers' roofs for potential costs, savings and project size.

Project Sunroof will also connect users with solar providers in their area. SunEdison, NRG and SunPower stand as a few of the groups that Google lists as solar developers.

Initially Residents in Boston, Fresno, California and the San Francisco Bay Area can participate by entering their address into the program’s home page, after which Google analyses their building’s rooftop, calculating how much sunlight it receives in a year.

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