The remarkable rise of California's grid battery capacity

[OKIsItJustMe]

4. Watts are nice, but what about watt-hours?

i.e. how long can the batteries keep putting out juice?


PG&E Press Release: The Next Giant Leap for Electric System Reliability: PG&E Proposes Nearly 1,600 MW of New Battery Energy Storage Capacity

01/24/2022
Projects Expected to Deliver Clean Energy to Customers by 2024

OAKLAND, Calif.--(BUSINESS WIRE)-- As part of its mission to build a stronger, more resilient energy grid for the hometowns it serves, Pacific Gas and Electric Company (PG&E) is proposing nine new battery energy storage projects totaling approximately 1,600 megawatts (MW), to further integrate renewable energy resources and improve reliability of the California electric system.

If approved by the California Public Utilities Commission (CPUC), these nine projects would bring PG&’s total battery energy storage system capacity to more than 3,330 MW by 2024.

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Project Details

The nine projects announced today and listed below all feature lithium-ion battery energy storage technology, each with a four-hour discharge duration. PG&E has executed 15-year Resource Adequacy agreements for each of the following projects:

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Is that bad? Is that good? At least it’s a figure.