California to host 1 GW of compressed air storage


From pv magazine USA

Canada-based Hydrostor is developing 1,000 MW of long-duration energy storage in California across two projects.

Its projects are in southern Kern County and a less specific site in “central California.” The two installations represent a combined investment of more than $1.5 billion. Hydrostor said that development work is underway, including transmission interconnection, engineering and permitting activities. Even though these initial phases have begun, Hydrostor has not yet said when the projects will start construction or be completed.

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All projects will use the company’s Advanced Compressed Air Energy Storage (A-CAES) technology, which provides eight to 12 hours of energy storage.

State regulators in California have identified a need of up to 1,600 MW of long duration energy storage by 2026. Hydrostor also is developing the Rosamond A-CAES Project in California, northeast of Los Angeles. That project will provide 500 MW of on-demand peaking capacity for 12 hours of duration once it becomes operational in 2024.

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