Hydrostor signs 60 MW offtake agreement with Clean Energy Alliance for Willow Rock Energy Storage Center in California

Type: Ppa · Technology: Storage · Country: United States · Capacity: 60 MW · Announced: 2026-08-07

Hydrostor and Clean Energy Alliance have signed a 60 MW offtake agreement for the Willow Rock Energy Storage Center in Kern County, California. The long‑duration storage facility will capture excess solar generation and discharge it during peak demand, supporting grid stability. Construction began in July 2026 after securing a California Energy Commission permit and a franchise agreement from Kern County. The deal helps CEA meet state reliability mandates while providing Hydrostor its first utility‑scale U.S. project. Both parties aim to deliver cost‑effective, zero‑emission power for California’s growing electricity needs.

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