Texan utility launches request for proposal for 500 MW of battery storage

CPS Energy, has launched a request for proposal (RFP) to acquire up to 500 MW of additional battery energy storage. The deadline to submit a proposal is Friday, January 30, 2026, at 11:45 p.m. Central Time.

The Texan utility company is headquartered in San Antonio and serves the region along with parts of seven adjoining counties.

It aims to have more than 1,000 MW of operational or contracted storage capacity on completion of the RFP. To date, the utility has brought 50 MW of storage capacity online, and its RFP forms part of its Vision 2027 Generation Plan. An additional 470 MW is in development and expected to be online in 2026.

“This request to add more battery storage to our generation portfolio continues to fulfill our promise to deliver on the utility’s Vision 2027 Generation Plan,” said Rudy D. Garza, President and CEO of CPS Energy. “The RFP reinforces our team’s ongoing commitment to secure additional energy resources needed to keep pace with our community’s rapid growth.”

The RFP is also part of CPS Energy’s commitment to the City of San Antonio’s Climate Action and Adaptation Plan which is targeting an increase in generation resource diversity as well as carbon neutrality by 2050.

Submissions must be made using the Power Advocate Portal link, here.

San Antonio operates within the Electric Reliability Council of Texas (ERCOT) grid but unlike most of Texas, San Antonio’s electricity market is regulated and CPS Energy controls much of the delivery and billing and acts as the sole provider.

In August 2024, CPS Energy signed an agreement with Eolian LP, a portfolio company of Global Infrastructure Partners, for 350 MW of capacity across two BESS projects expected to serve the needs of San Antonio for a 20-year period.