Overview
Southwestern Portland Substation is an operational 138 kV substation in Texas, United States, owned and operated by Oncor. It plays a key role in regional grid stability.
Southwestern Portland Substation is an electrical substation located in Texas, United States, near the coordinates 31.746951, -102.544772. It is owned and operated by Oncor, a major transmission and distribution utility in Texas. The substation operates at a voltage of 138 kV, which is a common sub-transmission voltage level in the US, serving to step down power for local distribution or interconnect transmission lines. The facility operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Electric Reliability Council of Texas (ERCOT), which sets reliability standards for the bulk power system. As part of Oncor's network, it adheres to NERC's Critical Infrastructure Protection (CIP) standards and FERC regulations for transmission assets. The 138 kV voltage level indicates it is a medium-scale substation, typical for serving industrial or urban areas. Environmentally, the substation is located in a semi-arid region of West Texas, where electrical infrastructure supports oil and gas operations, agriculture, and local communities. Its operational status ensures reliable power delivery to the surrounding area, contributing to grid resilience in a region prone to extreme weather events like heatwaves and winter storms.
Environmental context
The substation is situated in a semi-arid region of West Texas, where electrical infrastructure is critical for supporting oil and gas extraction, agricultural irrigation, and residential loads. The 138 kV voltage level and rural location mean the facility is moderately exposed to environmental risks such as dust storms and heat, but its design follows NERC standards for reliability.
Frequently asked questions
Southwestern Portland Substation is located in Texas, United States, near coordinates 31.746951, -102.544772.
The substation operates at 138 kV, a common sub-transmission voltage in the US.
The substation is owned and operated by Oncor, a major electric transmission and distribution utility in Texas.
As part of the US grid, it must comply with NERC reliability standards and FERC regulations, as well as ERCOT protocols for Texas.
A 138 kV substation typically steps down transmission voltage for local distribution or interconnects transmission lines, serving industrial and urban areas.