Stephenville Substation - Oncor 138 kV Substation in Stephenville, Texas

Stephenville Substation is an operational electrical substation located in Stephenville, Texas, United States. Owned and operated by Oncor, a major transmission and distribution utility in Texas, the facility plays a critical role in the local electrical infrastructure. With a voltage level of 138 kV, it is classified as a high-voltage substation, typical for sub-transmission and distribution networks. The substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which set reliability standards for the bulk power system. Oncor, as the operator, adheres to these standards to ensure grid stability and safety. The facility's 138 kV voltage level is common for connecting distribution networks to the transmission grid, serving industrial, commercial, and residential loads in the Stephenville area. As part of Oncor's extensive network in Texas, Stephenville Substation contributes to the reliability of electricity supply in the region. Its location in a growing urban area underscores its importance in meeting increasing energy demand. The substation's operational status ensures continued support for local communities and economic activities, highlighting its role in maintaining grid resilience.

The substation is situated in Stephenville, Texas, a region characterized by a mix of urban development and agricultural land. The local environment is subject to hot summers and occasional severe weather, including thunderstorms and tornadoes, which can impact grid reliability. The 138 kV substation's design and maintenance practices are adapted to these conditions, with measures to mitigate risks from weather events. The facility's location in a populated area necessitates careful management of electromagnetic fields and noise, in compliance with local regulations.