OCI Energy and CPS Energy break ground on Alamo City Battery Energy Storage Project

One of the largest standalone energy storage projects in the region, Alamo City BESS will bring flexible power and long ‑ term energy resilience to the San Antonio area SAN ANTONIO, May 19, 2026 /PRNewswire/ -- Today, OCI Energy, CPS Energy, and their project teams gathered in southeastern Bexar County to mark the official start of construction on the Alamo City Battery Energy Storage System (BESS). 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.