Overview
Robstown Substation is an operational electrical substation in Texas, United States, owned and operated by South Texas Electric Cooperative. It operates at 69 kV, serving the regional grid.
Robstown Substation is an operational electrical substation located in Texas, United States. Owned and operated by South Texas Electric Cooperative, it is a key node in the local transmission and distribution network. The substation operates at a voltage of 69 kV, which is typical for sub-transmission and distribution-level infrastructure in rural and suburban areas. The substation is part of the broader Texas Interconnection, which operates under the jurisdiction of the Electric Reliability Council of Texas (ERCOT). While ERCOT is not subject to FERC jurisdiction for intrastate operations, it adheres to NERC reliability standards to ensure grid stability. The 69 kV voltage level indicates a medium-voltage facility that steps down power from higher transmission voltages for local distribution. As a facility of South Texas Electric Cooperative, Robstown Substation supports the cooperative's mission to provide reliable electricity to member-owners in South Texas. Its location in Nueces County places it within a region that experiences hot summers and occasional extreme weather, including hurricanes, making grid resilience an important operational consideration. The substation plays a vital role in maintaining power supply to residential, agricultural, and industrial customers in the area.
Environmental context
The substation is located in a semi-arid coastal plain near the Gulf of Mexico, an area prone to tropical storms and hurricanes. The local environment includes agricultural lands and small urban centers. The 69 kV infrastructure is typical for rural distribution, with overhead lines that can be affected by vegetation and weather. The facility's design and maintenance must account for corrosion from coastal humidity and salt spray, as well as flood risks from heavy rainfall.
Frequently asked questions
Robstown Substation is located in Texas, United States, near the city of Robstown in Nueces County. Its coordinates are approximately 27.77 N, 97.64 W.
Robstown Substation operates at a voltage of 69 kV, which is a common voltage for sub-transmission and distribution substations in the United States.
Robstown Substation is owned and operated by South Texas Electric Cooperative, a member-owned utility serving South Texas.
Substations in Texas, particularly those connected to the ERCOT grid, must comply with NERC reliability standards. While ERCOT is not under FERC jurisdiction for intrastate matters, it enforces mandatory reliability standards to ensure grid stability.
A 69 kV substation typically steps down higher transmission voltages (e.g., 138 kV or 230 kV) to distribution voltages (e.g., 12 kV or 25 kV) for local delivery to homes and businesses. It also provides switching and protection functions.