Google, which has long funded big solar and wind projects around the world, is stepping into the solar industry in a more web-based and traditionally Google-style way.

On Monday, Google unveiled a site called Project Sunroof that lets people Google their address and find how much sun their roof gets, as well as the options in their area for buying new solar panels.

The site — which is only available in San Francisco, Boston and Fresno currently — uses data from Google Earth, including high-resolution aerial mapping data, to factor in little details like roof orientation, shade from trees, and local weather.

Here’s the official video from Google: