Span.IO develops products to enable rapid adoption of renewable energy and deliver an intuitive interface for the home. Founded by Arch Rao in 2018, Span.IO is backed by investors that include 1/0 Capital, ArcTern Ventures, Capricorn Investment Group, Congruent Ventures, Energy Foundry, Hardware Club, Incite.org, Ulu Ventures, Wells Fargo Strategic Capital, Inc., and Wireframe Ventures and is headquartered in San Francisco.