Overview
Harker Heights South Substation is an operational electrical substation in Texas, USA, operated by Oncor. It handles voltages of 138 kV and 25 kV, serving the local grid.
Harker Heights South Substation is an electrical substation located in Texas, United States, operated by Oncor, a major transmission and distribution utility. The facility is operational and plays a role in the regional power grid, converting high-voltage transmission power to lower distribution voltages. The substation operates at voltage levels of 138,000 volts (138 kV) for transmission and 25,000 volts (25 kV) for distribution, typical for a medium-to-large substation serving urban and suburban areas. As part of the US electrical infrastructure, it falls under NERC reliability standards and FERC regulation for grid stability and interconnections. Located near Harker Heights, the substation supports the growing energy demands of central Texas. Its operation by Oncor, a key player in the ERCOT market, underscores its importance in maintaining reliable electricity supply to residential, commercial, and industrial customers in the region.
Environmental context
The substation is situated in a semi-urban area of central Texas, where hot summers drive high electricity demand for air conditioning. Its location near residential and commercial zones requires careful management of electromagnetic fields and noise. Typical substations in this region are subject to vegetation management and storm resilience measures due to occasional severe weather.
Frequently asked questions
Harker Heights South Substation is located in Texas, United States, near the city of Harker Heights. Its coordinates are approximately 31.0539 N, -97.6370 W.
The substation operates at 138,000 volts (138 kV) for transmission and 25,000 volts (25 kV) for distribution, typical for a step-down substation serving local distribution networks.
The substation is operated by Oncor, a major electric transmission and distribution utility serving Texas. Oncor is responsible for maintaining the facility and ensuring reliable power delivery.
US substations are regulated by NERC reliability standards for grid stability and FERC for interstate transmission. Additionally, state-level utility commissions oversee local distribution. Oncor, as a Texas utility, operates under the ERCOT market rules.
Substations transform voltage levels between transmission and distribution networks, enabling efficient long-distance power transmission and safe local distribution. They also provide switching, protection, and monitoring functions to maintain grid reliability.