Arch Rao, the former head of product at Tesla who was behind the company’s Powerwall home energy storage is system, is back with a new company pitching energy management and efficiency for homes.

SpanIO is looking to upgrade the electrical fusebox for homes with a digital system that integrates into the existing circuit breaker technology that has been the basis for home energy management for at least a century. 

Rao and his team are looking to make integrating renewable power, energy storage, and electric vehicles easier for homeowners by redesigning the electrical panel for modern energy needs.

“We packaged the metering controls and compute between the bus bar and the breaker,” says Rao. “Energy flows through the panel through a breaker bar and the breaker

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