Mayor Ron Nirenberg speaks during a press conference and groundbreaking for the Supercritical Transformational Electric Power (STEP) pilot plant held Monday Oct. 15, 2018 at Southwest Research Institute. Credit: Edward A. Ornelas for the San Antonio Report
Mayor Ron Nirenberg speaks during a press conference and groundbreaking for the Supercritical Transformational Electric Power (STEP) pilot plant held Monday Oct. 15, 2018 at Southwest Research Institute.