Joint Base San Antonio Preparing for Geothermal Power Project with Eavor

The JBSA is one of four U.S. Department of Defense facilities to sign agreements this year for the deployment of geothermal technologies. The project in the JBSA will be carried out with Eavor Technologies Inc., who are developing deep closed-loop geothermal solutions or advanced geothermal systems.

Feasibility studies and testing of the site’s potential is set to begin within 2024 and are expected to take up to 10 years.

The JBSA was selected as the site for one of the pilot projects because of a favorable subsurface heat profile. “There’s effectively a dome of heat on the south side of San Antonio that brings heat closer to the surface than in other points on the earth,” said Kirk Phillips, director of the Air Force Office of Energy Assurance in Washington D.C.

The proposed geothermal plant will be located on a 17-acre site at the Chapman annex of the Air Force facility. This site has good connections to the local electricity provider, CPS Energy. The JBSA will still rely on the grid for primary power, with the geothermal power plant providing a reliable layer of redundancy.

“We are working to generate innovative, long-term and self-sustaining energy solutions for our mission’s future,” said Air Force Brig. Gen. Russell D. Driggers, Commander at JBSA. “With this pilot project, JBSA has an opportunity to spearhead innovations in clean energy and resilient infrastructure.”