Overview
West Memphis Substation is an operational electrical substation in Arkansas, United States, owned by Entergy Arkansas. It operates at 500 kV and 161 kV voltage levels, serving the regional power grid.
West Memphis Substation is an operational electrical substation located in Arkansas, United States. Owned by Entergy Arkansas, the facility plays a key role in the regional transmission network, handling high-voltage electricity at 500 kV and 161 kV. As a substation, it is critical for stepping down transmission-level voltages for distribution and interconnecting power lines. 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. The 500 kV voltage level indicates it is a major transmission asset, likely connected to the Entergy grid serving parts of Arkansas, Louisiana, Mississippi, and Texas. The 161 kV level suggests additional sub-transmission or distribution functions. Environmental and operational significance includes its role in maintaining grid stability and reliability for the surrounding region. Substations like West Memphis are essential for integrating power generation sources and ensuring electricity delivery to residential, commercial, and industrial customers. The facility's location in Arkansas places it within a region with growing energy demand and a mix of generation sources including natural gas, nuclear, and renewables.
Environmental context
The substation is situated in the Mississippi River Delta region, characterized by flat terrain and a humid subtropical climate. This area is prone to severe weather events such as thunderstorms, tornadoes, and occasional ice storms, which can impact grid infrastructure. The facility's voltage level and criticality to grid stability necessitate robust design and maintenance practices to withstand local environmental conditions.
Frequently asked questions
West Memphis Substation is located in Arkansas, United States, near the city of West Memphis. Its approximate coordinates are 35.117714 N, -90.187509 W.
West Memphis Substation operates at 500 kV and 161 kV, making it a high-voltage transmission substation critical for the regional power grid.
West Memphis Substation is owned by Entergy Arkansas, a subsidiary of Entergy Corporation, which provides electricity to customers in Arkansas.
Substations in the United States must comply with NERC reliability standards and FERC regulations. These include requirements for maintenance, cybersecurity, and grid stability.
A 500 kV substation is a major transmission node that steps down high-voltage electricity from long-distance transmission lines to lower voltages for regional distribution, ensuring efficient power delivery and grid reliability.