Photo: City of San Antonio
San Antonio's grid is about to get a major backup with a 120-megawatt (MW), 480-megawatt-hour (MWh) battery storage project.
CPS Energy, the largest municipally owned US utility and natural gas utility, and San Antonio-based solar and battery developer OCI Energy are bringing a large battery storage system to southeast Bexar County, Texas.
OCI Energy will develop, finance, build, own, and operate the project, called Alamo City ESS LLC, while CPS Energy will have operational control of the project to serve the San Antonio region's electricity needs.
The battery is designed to provide full power for four hours before needing to be recharged, which will be critical to meet high power demands.
The Alamo City project, which is expected to come online by the end of 2026, is part of CPS Energy's Vision 2027 plan to expand power generation capacity, bringing the total amount of battery storage under contract to 520 MW. CPS Energy has a (not very ambitious) goal of 40% renewables by 2040 and is adding natural gas production.
The president of OCI Energy, Sabah Bayatli, said, “As a company based in San Antonio, we are very excited to build on our ten-year partnership with CPS Energy. Now, we're introducing large-scale battery energy storage in San Antonio to help secure reliable and sustainable energy for our community today and for generations to come.”
OCI Energy will also donate $250,000 to the University of Texas at San Antonio to support educational programs associated with the donation.
The city of San Antonio is net zero by 2050 and is No. 1 in the state for installed solar capacity.
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