Overview
Rex Brown 230kV Substation is an operational electrical substation in Mississippi, United States, owned by Entergy Mississippi. It operates at 230kV and 115kV voltage levels, serving the regional power grid.
Rex Brown 230kV Substation is an operational electrical substation located in Mississippi, United States. Owned by Entergy Mississippi, the facility plays a key role in the regional transmission network, stepping down high-voltage electricity for distribution. The substation is part of the broader US electrical infrastructure, which is regulated by the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC) for reliability and market oversight. The substation operates at two voltage levels: 230,000 volts (230kV) and 115,000 volts (115kV), indicating its function as a transmission substation that connects high-voltage lines to lower-voltage distribution systems. This dual-voltage capability allows it to serve both bulk power transfer and local distribution needs. The facility is located near Jackson, Mississippi, and is integrated into Entergy Mississippi's grid, which serves over 450,000 customers in the state. As a critical node in the electrical grid, Rex Brown 230kV Substation supports grid stability and reliability for the surrounding region. Its operational status ensures continuous power supply to residential, commercial, and industrial users. The substation's design and maintenance adhere to NERC reliability standards, which mandate rigorous planning and operational practices to prevent outages and ensure system resilience.
Environmental context
The substation is situated in a region with a humid subtropical climate, characterized by hot summers and mild winters, which influences electrical demand patterns. The surrounding area includes urban and suburban development near Jackson, Mississippi. Electrical infrastructure in such settings must manage peak loads from air conditioning and heating, as well as storm-related risks from hurricanes and severe weather. The facility's voltage levels and equipment are designed to withstand local environmental conditions, including potential flooding and high winds.
Frequently asked questions
Rex Brown 230kV Substation is located in Mississippi, United States, near the city of Jackson. Its coordinates are approximately 32.36°N, -90.22°W.
The substation operates at two voltage levels: 230,000 volts (230kV) and 115,000 volts (115kV), making it a transmission substation that connects high-voltage lines to lower-voltage distribution systems.
Rex Brown 230kV Substation is owned by Entergy Mississippi, a utility company that provides electricity to customers across the state. The substation is part of Entergy's transmission network.
Substations in the US must comply with NERC reliability standards for grid stability and FERC regulations for interstate electricity markets. These standards cover equipment maintenance, cybersecurity, and operational planning.
A 230kV substation serves as a key node in the transmission system, stepping down high-voltage electricity from power plants to lower voltages for distribution to homes and businesses. It also helps balance load and maintain grid reliability.