Large battery storage plants are now providing electricity to the grid during peak hours of demand, a traditional role of natural gas. Three large plants – built by Tesla Motors, AES and Altagas – went live in southern California in February to fill the power void caused by a disastrous natural gas leak at Aliso Canyon in Los Angeles, which has been shut down. The leak emitted 109,000 tons of methane into the atmosphere and displaced thousands of local residents. The battery storage projects have been completed within six months and will alleviate the risk of winter blackouts. Find more information from Bloomberg Technology about The Battery Revolution