OCI Energy, CPS Energy, and their project teams on May 19 gathered in southeastern Bexar County, Texas, to mark the official start of construction on the Alamo City Battery Energy Storage System.
The ceremonial groundbreaking commemorated the transition from development to the build phase of one of the largest standalone battery energy storage projects in the region. The project is designed to strengthen how the San Antonio community is served during periods of highest electricity use.
"Once completed, the 120 MW/480 MWh facility will be capable of powering approximately 30,000 homes for up to four hours, delivering critical support during periods of peak demand. By shifting how and when electricity is supplied, the project is designed to help deliver power more efficiently and economically," CPS Energy said.
“This project represents a significant step forward toward realizing a more resilient, reliable energy system that San Antonians can be truly proud of,” said Sabah Bayatli, President, OCI Energy. “This groundbreaking reflects years of thoughtful coordination, planning, and hard work – and once completed, it will help the electric system better manage peak demand events.”
OCI Energy developed and financed the Alamo City BESS and will retain ownership under a long term storage capacity agreement with CPS Energy, which will have operational control of the facility to serve the San Antonio region when needed.
“Energy storage is a critical component of how we prepare for the future,” said Rudy Garza, President & CEO of CPS Energy. “Projects like Alamo City BESS give us the flexibility to meet growing demand, integrate more diverse energy resources, and ensure our community has reliable power when it matters most.”
Organizations with deep experience across the energy sector are supporting the delivery of this project, the Texas public power utility noted.
ING is providing construction financing, LG Energy Solution Vertech is supplying the battery energy storage technology, and Elgin Power Solutions is serving as the Engineering, Procurement, and Construction contractor.
"This collaboration represents a significant investment in the region and a shared commitment to building durable infrastructure that supports Texas’ energy system during periods of high demand," CPS Energy said.
Alamo City BESS is expected to enter commercial operation in 2027.
