The world’s largest battery storage substation is now live

monolith battery storage

Southern California Edison (SCE) has flipped the switch on what is now the largest lithium-ion battery storage facility in the world — a substation with 80 megawatt hours (MWh) of capacity.

Located Ontario, Calif., the new Mira Loma substation quietly went live Dec. 30. The substation is made up of commercial-grade Tesla Powerpack 2 lithium-ion battery units.


Southern California Edison engineer Grant Davis examines components in one of the 604 racks of battery modules at the Tehachapi storage substation completed last year.

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