Hydrostor’s Willow Rock Energy Storage Center Obtains Final Approval for Power Plant License
Hydrostor, a leading global long duration energy storage (LDES) developer and operator, is pleased to announce that the Willow Rock Energy Storage Center received final permitting approval from the California Energy Commission (CEC), positioning the project to be shovel-ready in 2026. The 500 MW / 4,000 MWh advanced compressed air energy storage (A-CAES) project can store energy for eight hours of continuous discharge to the grid, and will provide reliability and resiliency amidst rapidly rising electricity demand.
Hydrostor’s Willow Rock Energy Storage Center receives Conditional Commitment for up to $1.76 billion loan guarantee from U.S. Department of Energy
Long-duration energy storage developer and operator, Hydrostor, has reached a conditional commitment for a loan guarantee of up to $1.76 billion with the U.S. Department of Energy’s (DOE) Clean Energy Financing Program (including approximately $1.5 billion of principal and approximately $280 million of capitalized interest). Once finalized, the loan guarantee will help to fund the Willow Rock Energy Storage Center, a 500 MW advanced compressed air energy storage (A-CAES) project to be built in Rosamond, California, that will provide more than eight hours of back-up power to California’s grid.
