B2U Storage Solutions on Sept. 9 announced that its Bexar Martinez battery energy storage system project has entered commercial operation, which will be delivering 28 MWh of grid services to the Electric Reliability Council of Texas.
Located near San Antonio and connected within CPS Energy's service territory, the project is built entirely from repurposed electric vehicle batteries, demonstrating the value of second-life storage at utility scale, the company said.
This is the second site in Texas where B2U has developed and equipped with its patented BESS cabinets with repurposed EV batteries.
By giving these batteries a second life, B2U extends their useful value well beyond their time in vehicles, reducing waste and lowering the cost of grid storage, it said.
The project supports grid reliability in one of the fastest-growing regions of the ERCOT market, helping meet rising electricity demand with a lower-cost storage solution. B2U expects to deploy an additional 50+ MWhs in ERCOT over the next 6 months.
Demonstrating bankability, the Bexar Martinez project and B2U's other sites qualify for the domestic content bonus under the Investment Tax Credit (ITC), have received third party financing, and have been acquired by B2U Infrastructure Partners.
"Projects that utilize B2U’s BESS deliver infrastructure investors significantly higher returns than those available from other domestic BESS vendors," it said.
With Bexar Martinez now operating, B2U's total portfolio providing grid services to ERCOT in Texas exceeds 50 MWh.
Across Texas and California, the company is managing more than 5,000 repurposed EV batteries and is operating roughly 100 MWh of energy storage in both solar-paired and stand-alone configurations.
