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PG&E teams with Energy Vault to build and operate largest green hydrogen long-duration energy storage system
Energy - JANUARY 5, 2023

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PG&E teams with Energy Vault to build and operate largest green hydrogen long-duration energy storage system

by Andrea Zander

Energy Vault Holdings and Pacific Gas & Electric Co. (PG&E), a subsidiary of PG&E Corp., have partnered to deploy and operate a utility-scale battery plus green hydrogen long-duration energy storage system (BH-ESS) with a minimum of 293 megawatt-hours of dispatchable carbon-free energy.

The BH-ESS is designed to power the downtown and surrounding area of Calistoga, Calif., for a minimum of 48 hours during planned outages and potential Public Safety Power Shutoffs, which is when the powerlines serving the surrounding area must be turned off for safety due to high wildfire risk.

PG&E submitted the project contract for review and approval to the California Public Utilities Commission (CPUC) on Dec. 30, 2022, with a request for the issuance of a final resolution approving the project by May 15, 2023. The energy storage system will be owned, operated and maintained by Energy Vault while providing dispatchable power under a long-term tolling agreement with PG

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