Eos Contributing 15-MWh Zinc-Based Battery Storage to Faraday Microgrid for California Tribe
Eos Energy Enterprises will supply its zinc-based long-duration battery storage system to a tribal microgrid project underway in northern California.
Project developer Faraday Microgrids ordered the 3-MW/15-MWh Eos Z3 battery system manufactured in the U.S. Zinc-based battery chemistry offers longer duration options to the lithium-ion currently deployed at most utility-scale and distributed energy sites.
The announcement by New Jersey-based Eos does not name the Faraday Microgrids project on tribal land. However, Faraday’s website details its Paskenta Band microgrid which will automatically island (operate disconnected from the main grid) and support a tribal hospital’s emergency power.
“It is our great pleasure to once again partner with Eos to deploy their cutting-edge zinc-bromide energy storage technology in one of the largest renewable energy microgrids in the Western United States,” said Faraday CEO David Bliss in a statement. “This will support a Native American community and contribute to bulk grid-edge power stability and availability—demonstrating the ability of distributed energy resources to support the safety and growth of vibrant communities in California and across North America.”
The Paskenta microgrid will unite and connect 3.5 MW of solar power, 15 MWh of non-lithium battery storage discharge capacity, a 1-MW fuel cell system and 6 MW of diesel gen-sets, all managed by the microgrid controller, according to the Faraday webpage. The project is currently in the design phase and could be commissioned by the second half of 2026.
The California Energy Commission is involved in funding on both the battery storage and microgrid sides of the tribal project. The Paskenta Band of Nomlaki Indians are pursuing energy independence with the microgrid.
“This strategic project further demonstrates the performance and reliability of our Z3 systems in real world applications,” said Nathan Kroeker, Eos Chief Commercial Officer and Interim Chief Financial Officer. “As a repeat order through our established partners at Faraday and the CEC, this deployment serves as a testament to the strength of our commercial relationships and reinforces our mission to deliver resilient, reliable and domestically manufactured energy solutions.”
Eos manufactures its zinc-based energy storage systems at its Ingenuity Park facilities in Turtle Creek, Pennsylvania. The company is currently working on developing a second U.S. manufacturing site outside the Mon Valley region.
In April, Eos and Frontier Power announced a memorandum of understanding on developing 5 GWh in energy storage capacity for the United Kingdom market.
Faraday Microgrids, meanwhile, has commissioned or is developing on-site power projects for several California microgrids, including Valley Children’s Hospital in Madera, healthcare giant Kaiser Permanente in Ontario, and San Benito Community Clinic in Hollister.
