
Hydrogen Fuel Cells Power Calistoga’s Zero-Emission Backup System
June 5, 2025Calistoga, California is making a bold move toward a cleaner future with the launch of the Calistoga Resiliency Center. This backup power system ditches the old diesel generators and embraces a more sustainable solution—hydrogen fuel cells paired with advanced lithium-ion batteries. Built by Energy Vault and powered by Plug Power’s fuel cells, the system delivers up to 48 hours of reliable, zero-emission electricity when wildfire-related outages strike. It’s not just innovative—it’s now the largest green hydrogen-based power system of its kind in the entire U.S.
A Smarter, Cleaner Backup Plan
This project isn’t just about keeping the lights on—it’s about doing it in a way that’s cleaner, quieter, and smarter. Thanks to a 10.5-year partnership with PG&E, the Calistoga Resiliency Center includes a dedicated microgrid that keeps the power flowing during Public Safety Power Shutoffs (PSPS), the planned outages used to prevent wildfires. No more diesel fumes, no more rumbling generators—just clean, quiet energy ready when the community needs it most.
Future-Proofing Power in Fire-Prone Areas
What really makes this project stand out is its potential to do even more. With regulatory approval, the system might also feed energy back into the main grid—offering a boost during high-demand times and creating a stronger, more resilient power network. For communities in wildfire-prone regions, this could be a game-changer. Calistoga is stepping up not only as a leader in zero-emission technology but also as a model for how sustainable energy can protect and empower neighborhoods across the country.