CPS Energy has teamed up with OCI Energy and LG Energy Solution Vertech to launch a large battery storage system in Bexar County, Texas. This new facility, called the Alamo City Battery Energy Storage System (BESS), will have the ability to store 120 megawatts of electricity—enough to help power the grid during high demand periods. The announcement was made in May 2025 during a partnership event in South Korea. Once completed, this system will support the ERCOT grid and improve electricity reliability across San Antonio, especially during heatwaves and extreme weather.
Wind Power Deal Nearly Doubles CPS Energy’s Capacity
As part of its long-term plan known as Vision 2027, CPS Energy recently signed a new agreement with Avangrid to expand its wind power supply. This deal will add about 159 megawatts of energy from the Peñascal wind farm in South Texas. That brings CPS Energy’s total from Avangrid to over 320 megawatts—enough to power around 40,000 homes at peak times. CPS now has over 1,060 megawatts of wind energy overall, making it the second-largest buyer of wind power in the state. The move shows the utility’s ongoing focus on clean energy and reducing its carbon footprint.
Upgrading Infrastructure for Future Growth
To handle increasing electricity demand in the San Antonio region, CPS Energy is also upgrading its transmission lines. The company is spending $150 million to build nearly 60 miles of new lines, mostly coming from the J.K. Spruce power plant. These upgrades are being pushed by ERCOT to reduce grid congestion and keep power flowing smoothly, especially as more renewable energy comes online. The project is expected to wrap up by the end of 2026 and will play a key role in modernizing the area’s energy infrastructure.
Image Source: Pulse
