HomeRenewable energy ›PG&E Teams and Energy Vault to Build and Operate the Largest Green Hydrogen Long-Duration ESS in US

PG&E Teams and Energy Vault to Build and Operate the Largest Green Hydrogen Long-Duration ESS in US

Energy Vault Holdings, Inc. and Pacific Gas and Electric Company (PG&E) announced the companies are partnering 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 (MWh) of dispatchable carbon-free energy.

January 07, 2023. By News Bureau

Energy Vault Holdings, Inc. and Pacific Gas and Electric Company (PG&E) announced the companies are partnering 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 (MWh) of dispatchable carbon-free energy.
 

The BH-ESS is designed to power downtown and the surrounding area of the Northern California City of Calistoga for a minimum of 48 hours during planned outages and potential Public Safety Power Shutoffs (PSPS), 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 December 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&E.

The system’s capacity may be expanded to 700MWh, which would allow it to operate for longer without refueling, enabling further flexibility for PG&E and the City of Calistoga.

“PG&E selected Energy Vault’s innovative hybrid architecture and design to create a cost-effective, community-scale, fully carbon-free microgrid that can store and dispatch on-demand renewable energy,” said Ron Richardson, Regional Vice President, North Bay and North Coast, PG&E. “This breakthrough collaboration between PG&E and Energy Vault provides a template for future, renewable community-scale microgrids that successfully integrate third-party distributed energy resources, which is expected to cost customers less than the benchmark set by state regulators based on the alternative use of mobile diesel generators.”

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