Southwest Research Institute Substation - 138 kV Substation in San Antonio, Texas

Southwest Research Institute Substation is a 138 kV electrical substation located in San Antonio, Texas, United States. Owned and operated by CPS Energy, the facility plays a key role in distributing power to the surrounding area, including the Southwest Research Institute campus. The substation is part of the larger Texas Interconnection grid, which operates under the regulatory oversight of the Electric Reliability Council of Texas (ERCOT) and the Public Utility Commission of Texas (PUCT). Operating at 138 kV, this substation is classified as a high-voltage transmission-level facility, typical for urban and industrial supply in the United States. The voltage level indicates its role in stepping down power from higher transmission voltages for local distribution. CPS Energy, the municipal utility serving San Antonio, manages a diverse portfolio of generation and transmission assets, ensuring reliable electricity to over 800,000 customers. The substation's location in San Antonio places it within a growing metropolitan area with significant industrial and research activity. Its proximity to the Southwest Research Institute, a major applied research and development organization, underscores its importance in supporting critical infrastructure. The facility contributes to grid stability and resilience in the region, aligning with NERC reliability standards and FERC regulations for transmission assets.

The substation is situated in an urban environment in San Antonio, Texas, where land use is dominated by commercial and industrial development. The surrounding area experiences a subtropical climate with hot summers and mild winters, which influences electricity demand patterns, particularly for air conditioning. The facility's operation involves minimal direct environmental impact, though its role in the grid supports energy distribution to a region with growing renewable energy integration, including wind and solar resources.