Southern California Edison Co. can fast-track 537.5 MW of utility-owned battery storage to fortify electric grid reliability for summer 2022 after the California Public Utilities Commission on Dec. 16 unanimously approved a $1.2 billion agreement with construction and engineering firm Ameresco Inc.
The “emergency reliability contract” includes installation, by Aug. 1, 2022, of 225 MW at the Edison International subsidiary’s Springvale substation, 200 MW at its Hinson substation and 112.5 MW at the Etiwanda substation. The projects will rely on lithium-ion batteries.
In late August, the utility started its search for speedy delivery of battery facilities with four hours of energy storage capacity following Gov. Gavin Newsom’s emergency proclamation to prevent blackouts because of capacity shortfalls exacerbated by climate change.
“We are facing a large gap in the amount of resources we have to ensure reliability of our current grid in the face of more extreme climate-driven weather events, as we saw earlier this summer and, of course, we witnessed last summer,” California Public Utilities Commission President Marybel Batjer said at the Dec. 16 meeting.