Hydrostor files for another big energy storage project in California

An artist's rendition of the Gem Energy Storage Center in California. Source: Hydrostor Inc.

December 3 (Renewables Now) - A unit of Canada’s Hydrostor Inc has filed an Application for Certification (AFC) with the California Energy Commission (CEC) for the development of a 500-MW/4,000-MWh energy storage plant in Kern County.

The subsidiary, called Gem A-CAES LLC, is looking to build the so-called Gem Energy Storage Center outside of the City of Rosamond. It will utilise the company’s proprietary Advanced Compressed Air Energy Storage (A-CAES) technology, providing long-duration energy storage for the region with no fossil fuel consumption and no greenhouse gas emissions.

The capital investment for the project is estimated at USD 975 million (EUR 864m). Gem’s filing with the CEC marks the start of a comprehensive public review process. The facility could begin operations as early as 2026.

As a result, Hydrostor is now advancing two of the largest long-duration energy storage facilities in California, having also recently proposed a 400-MW/3,200-MWh project in San Luis Obispo County, to be known as the Pecho Energy Storage Center.

(USD 1.0 = EUR 0.886)

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