The batteries that could make fossil fuels obsolete

The twin smokestacks of the Moss Landing Power Plant tower over Monterey Bay. Visible for miles along this picturesque stretch of the north Californian coast, the 500-foot-tall (150m) pillars crown what was once California's largest electric power station – a behemoth natural gas-fired generator. Today, as California steadily moves to decarbonise its economy, those stacks are idle and the plant is largely mothballed.
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