California battery plant is among world's largest as power storage booms

A major battery plant near Los Angeles will be among the largest in the world when it comes online later this year, promising to shore up California’s power grid during the peak summer season and help the state a meet ambitious climate goals.
Calpine’s billion-dollar Nova Power Bank, built on the site of a failed gas-fired power plant, will be able to power about 680,000 homes for up to four hours when charged. It could help boost California’s renewable power industries which provide more than a third of the state’s power needs.