This new Texas battery storage project runs on used EV packs

California-based B2U Storage Solutions is building a new battery energy storage facility east of San Antonio, Texas – and it’s going to be powered by used EV batteries.

The Bexar Corrilla project in Bexar County is B2U’s third grid storage site and its first in Texas. When complete later this year, it’ll have 24 megawatt-hours (MWh) of capacity and plug directly into San Antonio utility CPS Energy’s distribution system. B2U will repurpose around 500 end-of-life EV battery packs, housed in 21 modular cabinets, to store and dispatch power to the Texas grid.

The company has already deployed over 40 MWh of used EV batteries as battery storage in California. Its tech skips the expensive and energy-intensive remanufacturing process, thanks to a patented plug-and-play system that connects the batteries directly to the grid. The system’s certified to UL 9540 safety standards and uses AI to manage real-time power trading.

So why Texas? The state’s grid is notoriously volatile, and demand for backup is rising fast with more renewables and people plugging in. Batteries like these can help stabilize things when transmission can’t keep up.

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B2U’s CEO Freeman Hall says the Texas expansion “is a significant strategic milestone” and shows how repurposed EV packs are becoming a go-to solution for grid and industrial-scale energy storage.

Over the next year, the company plans to build three more projects in Texas, bringing its total footprint in the state to 100 MWh. Add in its California solar + storage sites, and B2U expects to hit 150 MWh of repurposed EV batteries on the grid by mid-2026.

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