Sun Number tool analyzes viability of solar power for millions of homes

The new technology uses 3D snapshots to measure how much sunlight a building receives.

December 17, 2013

Sun Number, a Minnesota start-up company, is using massive databases and web-based tools to help homeowners and solar panel installers determine whether millions of U.S. buildings get enough sun to make rooftop solar power worthwhile. The technology relies on aerial mapping known as Lidar that takes a three-dimensional snapshot of the landscape, accurately depicting tree and building heights, roof angles, and other features. Sun Number has rated the solar potential for 7.5 million properties in eight metropolitan regions.

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