Mid County Substation - 230 kV Electrical Substation in the United States

Mid County Substation is an operational electrical substation located in the United States, owned and operated by Entergy. The facility operates at 230 kV, a high-voltage level typical of transmission substations that interconnect bulk power systems and distribute electricity to local networks. As a 230 kV substation, Mid County Substation falls under the regulatory oversight of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC). These bodies enforce reliability standards for transmission assets, ensuring grid stability and compliance with mandatory operating protocols. The substation likely employs modern switchgear and automation systems aligned with industry standards such as ISO/IEC 61850 for substation automation. This substation is integral to Entergy's transmission network, serving communities and industries in the region. Its location near the Gulf Coast places it in an area with significant energy demand from industrial and residential consumers. The facility's operational status ensures continued support for grid reliability and economic activity in the surrounding area.

The substation's location in the Gulf Coast region involves a humid subtropical climate with frequent thunderstorms and hurricane risks, which can impact electrical infrastructure. The 230 kV voltage level indicates a critical role in the transmission grid, requiring robust design to withstand extreme weather. The facility's proximity to industrial zones and urban centers means it supports high energy demand while operating under environmental regulations that manage electromagnetic fields and stormwater runoff.