Sun Number rates homes’ rooftops for solar panels



By David Shaffer, Star Tribune

“Does big data offer a path to cheaper solar power?  Sun Number, a start-up company that’s expanding in Minnesota, 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 was developed by the company’s co-founder and chief technology officer, Ryan Miller of Deephaven. It 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.”

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