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Board sends conditional support to California Energy Commission for Willow Rock long‑duration storage project
Summary
Kern County supervisors voted to send a conditional support letter to the California Energy Commission urging mitigation measures for the proposed 500 MW/4,000 MWh Willow Rock (HydroStore) compressed‑air energy storage project; the county asked for specific road, safety and local‑hire conditions.
The Kern County Board of Supervisors on April 29 authorized the chair to send a conditional letter of support to the California Energy Commission (CEC) for the Willow Rock Energy Storage Center, a proposed 500‑megawatt, 4,000‑megawatt‑hour compressed‑air energy storage project north of Rosamond.
Planning staff and the applicant described the project as long‑duration energy storage that stores energy using compressed air in a deep cavern (staff said the cavern would be roughly 3,000 feet deep and the size of a football field) and releases it during peak demand. The project would require construction of a large on‑site operation, up to 700 construction…
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