Pacific Steel Group Taps Invinity Energy Systems Technology for Mojave Micro Mill
06/17/2026 - Invinity Energy Systems announced it will provide the largest vanadium flow battery system in North America at 32 MWh to Pacific Steel Group’s (PSG) new Mojave Micro Mill in Kern County, Calif., USA.
The company said the battery system will provide energy storage for the facility. It is supported by grant funding from the California Energy Commission’s Long-Duration Energy Storage (LDES) Program, awarded to PSG.
“The long-duration capabilities and versatility of Invinity’s vanadium flow battery will support the operational efficiency and resilience of the steel plant, and optimize the plant’s use of clean, renewable energy,” said Jonah Steinbuck, director of the energy research and development division at California Energy Commission.
The battery system will sit alongside a solar array rated at over 40 MWp. With that power, the facility will be able to recycle about 500,000 metric tons of scrap metal annually into seismic-grade steel rebar.
“From the outset, our vision has been to develop one of the world’s cleanest and most sustainable steel manufacturing facilities. To support that goal, we integrated renewable energy generation and advanced battery storage into the project’s design,” said Mark Olson, vice president of mill operations at PSG.
The companies said delivery of the American-manufactured batteries is expected for the first quarter of 2027.
“The long-duration capabilities and versatility of Invinity’s vanadium flow battery will support the operational efficiency and resilience of the steel plant, and optimize the plant’s use of clean, renewable energy,” said Jonah Steinbuck, director of the energy research and development division at California Energy Commission.
The battery system will sit alongside a solar array rated at over 40 MWp. With that power, the facility will be able to recycle about 500,000 metric tons of scrap metal annually into seismic-grade steel rebar.
“From the outset, our vision has been to develop one of the world’s cleanest and most sustainable steel manufacturing facilities. To support that goal, we integrated renewable energy generation and advanced battery storage into the project’s design,” said Mark Olson, vice president of mill operations at PSG.
The companies said delivery of the American-manufactured batteries is expected for the first quarter of 2027.
