Overview
San Angelo Southland Hills 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 Angelo Southland Hills Substation is an electrical substation located in San Angelo, Texas, United States. Owned and operated by American Electric Power, the facility is part of the regional transmission network, stepping down high-voltage electricity for distribution. The substation operates at 138 kV, a common sub-transmission voltage level in the United States, indicating its role in connecting bulk power systems to local distribution networks. As a substation under the jurisdiction of the North American Electric Reliability Corporation (NERC), the facility must comply with mandatory reliability standards designed to ensure grid stability and security. The 138 kV voltage level places it in the medium-to-high voltage range, typically serving urban and suburban areas. American Electric Power, one of the largest electric utilities in the U.S., operates this substation as part of its extensive transmission infrastructure in Texas, which is part of the Electric Reliability Council of Texas (ERCOT) interconnection. The substation plays a critical role in maintaining reliable electricity supply to the San Angelo area. Its operational status ensures that local residential, commercial, and industrial customers receive stable power. The facility's location in a growing region underscores its importance for supporting economic development and community services.
Environmental context
The substation is located in San Angelo, Texas, a semi-arid region with hot summers and mild winters. Electrical infrastructure in such areas must be designed to withstand temperature extremes and occasional severe weather, including thunderstorms and high winds. The 138 kV voltage level suggests the substation is part of the sub-transmission system, which typically has a smaller environmental footprint than high-voltage transmission lines but still requires careful siting to minimize visual and land-use impacts. The facility's operation contributes to grid reliability without direct emissions, aligning with broader environmental goals of efficient electricity delivery.
Frequently asked questions
San Angelo Southland Hills Substation is located in San Angelo, Texas, United States, at coordinates approximately 31.4032° N, -100.4918° W.
The substation is owned and operated by American Electric Power, a major investor-owned electric utility in the United States.
The substation operates at 138 kV, which is a common sub-transmission voltage level used for distributing electricity from high-voltage transmission lines to local distribution networks.
As part of the U.S. electrical grid, the substation must comply with NERC reliability standards and FERC regulations. It is also subject to ERCOT protocols since it is located in Texas.
A 138 kV substation typically steps down voltage from higher transmission levels (e.g., 345 kV) to distribution levels (e.g., 69 kV or lower), serving as a critical node for delivering electricity to urban and suburban areas.