Overview
San Ygnacio Substation is an operational electrical substation in Texas, United States, owned and operated by American Electric Power. It operates at a voltage of 138 kV, serving the local grid.
San Ygnacio Substation is an operational electrical substation located in Texas, United States. Owned and operated by American Electric Power, it is a key node in the regional transmission network, stepping down voltage for distribution to local communities. The substation operates at 138 kV, a common voltage level for sub-transmission and distribution in the United States. As part of the American Electric Power system, it adheres to NERC reliability standards and FERC regulations, ensuring grid stability and compliance with federal oversight. The facility likely includes modern switchgear and protection systems to manage power flow and maintain safety. Located in a rural area near the Rio Grande, the substation supports electricity supply to the surrounding region, including agricultural and residential customers. Its role in the grid is critical for maintaining voltage stability and reliability, particularly given the remote location and potential for extreme weather events common in South Texas.
Environmental context
The substation is situated in a semi-arid region of South Texas, characterized by hot summers and occasional severe storms. Its rural location reduces direct environmental impact compared to urban substations, but the facility must manage risks from flooding and heat. The 138 kV voltage level indicates it serves as a distribution hub, with lower electromagnetic field exposure than higher-voltage transmission lines.
Frequently asked questions
San Ygnacio Substation is located in Texas, United States, near the Rio Grande in Zapata County. Its coordinates are approximately 27.07 N, -99.38 W.
San Ygnacio Substation is owned and operated by American Electric Power (AEP), one of the largest electric utilities in the United States.
San Ygnacio Substation operates at 138 kV, a standard voltage for sub-transmission and distribution in the US grid.
Substations in the United States must comply with NERC reliability standards for grid stability and FERC regulations for interstate transmission. AEP, as a public utility, also follows state-level Public Utility Commission rules.
A 138 kV substation typically steps down high-voltage transmission power (e.g., 345 kV) to lower voltages for local distribution, serving industrial, commercial, and residential customers. It also provides switching and protection functions.