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CPS Energy, Ashtrom Break Ground on 150-Megawatt El Patrimonio Solar Farm in San Antonio

The build is a key step in CPS Energy’s plan to add more large-scale solar to meet growing power needs.

Overview

  • El Patrimonio broke ground in Bexar County with CPS Energy, Israel’s Ashtrom Renewable Energy, and SOLV Energy partnering on the project.
  • The solar farm is rated at 150 megawatts across about 867 acres and is projected to power roughly 37,000 homes.
  • A 20-year power purchase agreement sends about 70% of the project’s output to CPS Energy, with the rest sold on the Texas open electricity market.
  • Ashtrom Renewable is slated to operate the site starting in 2027 after construction wraps up.
  • The project supports CPS Energy’s proposed move to lift solar from about 10% of its portfolio to 28% by 2040, building on 1,041 megawatts already in service across 16 sites and prior work with Ashtrom on the Tierra Bonita project.