Cagnon Road Substation - High-Voltage Electrical Substation in San Antonio, Texas

Cagnon Road Substation is an operational electrical substation located in San Antonio, Texas, United States. Owned and operated by CPS Energy, the facility handles transmission voltages of 345 kV and 138 kV, placing it in the high-voltage category critical for bulk power transfer and grid stability. The substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which enforce reliability standards for transmission-level assets. CPS Energy, as the municipal utility, ensures compliance with these standards to maintain grid security and operational efficiency. As a key component of the San Antonio area electrical infrastructure, Cagnon Road Substation supports the delivery of electricity to residential, commercial, and industrial customers. Its high-voltage capacity enables efficient long-distance power transmission, contributing to the reliability and resilience of the regional power grid.

Located in an urban area of San Antonio, Texas, the substation operates in a region with hot summers and mild winters, which drives peak electricity demand for air conditioning. The facility's high-voltage equipment is designed to minimize electrical losses, reducing environmental impact. Its urban setting requires careful management of electromagnetic fields and noise to comply with local regulations.