World’s Biggest Battery In California Overheats, Shuts Down

An “overheating incident” at the world’s biggest grid battery in California on Sept. 4 forced three quarters of the station to power down until further notice. South of San Francisco, the largest-of-its-kind Moss Landing energy storage facility recently grew from 300 to 400 megawatts (MW), with the ability to output for four hours. But after a limited number of modules reached operationally unsafe temperatures on Sept. 4, safety mechanisms triggered sprinklers that targeted the affected modules, resulting in the facility’s primary 300-MW section to shut off entirely. The overheating came as the state experienced a sweltering 100 degrees Fahrenheit heatwave over the Labor Day weekend. The North County Fire Protection District of Monterey County was called to the scene as a precaution. No injuries were sustained. The newly built 100-MW portion of the power station located in a separate building remained functional. On Sept. 7, Vistro, the owner, and battery …

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