As data centers strain the power grid, utilities are scrambling to build new power plants. But a startup in California is one of a handful focusing on the problem from a different angle: building a network of batteries and solar panels at homes to relieve pressure on the grid more quickly.

In some cases, thanks to state funding, low-income homeowners can get the systems installed at no cost, and then start saving on their electric bills and have access to backup power if the grid goes down. Others pay a subscription that’s lower than their previous electric bill. Then the startup, called Haven, manages the flow of power back to the grid.

Why utilities see Haven’s network as a ‘mini power plant’

“We own and operate all the batteries,” says Haven CEO Vinnie Campo. (The company focuses on

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