PG&E's 13th Microgrid: Calistoga's Zero-Emission Backup Power
PG&E has bolstered its commitment to community resilience with 13 distribution microgrids since 2021, including the Calistoga Resiliency Center, the largest and first fully renewable system. This project, partially funded by a $28 million deal, ensures power supply during wildfires or extreme weather events.
The Calistoga Resiliency Center, a joint venture between Energy Vault Holdings Inc. and PG&E, serves as a backup microgrid for the region. It's equipped with a 293 MWh hybrid hydrogen fuel cell and battery-based energy storage system (BESS), capable of generating 8.5 MW of power for around 1,600 customers. The facility uses liquid hydrogen stored onsite and can provide multi-day power generation without service interruptions. It's designed to respond quickly from a 'black start' situation, ensuring essential services like fire stations and medical facilities remain operational during power shutoffs.
The Calistoga Resiliency Center, with its zero-emissions profile, aligns with California's renewable portfolio standard. Such microgrids play a crucial role in maintaining essential services and supporting communities affected by public safety power shutoffs.
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