Overview
Gregory Substation is an operational electrical substation in Texas, United States, owned and operated by American Electric Power. It operates at a voltage of 69 kV, serving as a key node in the regional transmission grid.
Gregory Substation is an operational electrical substation located in Texas, United States. Owned and operated by American Electric Power, one of the largest electric utilities in the country, the facility plays a role in the transmission and distribution of electricity within the regional grid. With a voltage level of 69 kV, it is classified as a sub-transmission or distribution substation, typical for serving local industrial, commercial, and residential loads. The substation operates under the regulatory oversight of the Federal Energy Regulatory Commission (FERC) for wholesale electricity markets and the North American Electric Reliability Corporation (NERC) for reliability standards. As part of the American Electric Power system, it adheres to NERC's Critical Infrastructure Protection (CIP) standards and the Texas Reliability Entity (TRE) regional entity requirements. The 69 kV voltage level is common for distribution substations that step down power from higher transmission voltages to primary distribution levels. Located in Texas, a state with a large and growing population and significant industrial base, Gregory Substation contributes to grid stability and energy delivery in the region. Its coastal proximity near Corpus Christi suggests it may support local energy needs, including those of the petrochemical and refining industries. The substation's operational status ensures continued service to the community, with American Electric Power's maintenance and upgrade programs helping to maintain reliability.
Environmental context
The substation is situated in a coastal region of Texas, an area prone to hurricanes and severe weather events that can impact electrical infrastructure. The 69 kV voltage level and urban-rural interface location require robust design to withstand wind and flooding risks. American Electric Power's vegetation management and equipment hardening practices help mitigate environmental risks, while the substation's role in the local grid supports energy resilience for the community.
Frequently asked questions
Gregory Substation is located in Texas, United States, near the city of Gregory, with coordinates approximately 27.9233 N, -97.3093 W.
Gregory Substation operates at a voltage of 69 kV (69,000 volts), which is typical for distribution-level substations that supply power to local areas.
Gregory Substation is owned and operated by American Electric Power (AEP), a major investor-owned electric utility serving parts of 11 states in the United States.
As part of the U.S. electrical grid, Gregory Substation must comply with NERC reliability standards, including CIP for cybersecurity, and FERC regulations for wholesale electricity markets. It also falls under the Texas Reliability Entity (TRE) regional oversight.
A 69 kV substation typically steps down higher transmission voltages (e.g., 138 kV or 230 kV) to primary distribution voltages (e.g., 12 kV or 34.5 kV) for delivery to industrial, commercial, and residential customers. It also provides switching and protection functions to maintain grid reliability.