Stennis Substation - Operational Substation in Mississippi, United States

Stennis Substation is an operational electrical substation located in Mississippi, United States, owned and operated by Coast Electric Power Association. The facility handles transmission-level voltage of 115 kV and distribution-level voltage of 23 kV, indicating its role in stepping down power for local distribution. 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 U.S. bulk power system. As a substation owned by a cooperative utility, it is subject to cooperative governance and reliability obligations under NERC's jurisdiction. This substation plays a critical role in the local electrical infrastructure, supporting grid stability and power delivery to the surrounding community. Its location in Mississippi places it within the Southeastern Electric Reliability Council (SERC) region, which coordinates reliability across multiple states.

The substation is located in a region with a humid subtropical climate, which can affect equipment performance and maintenance schedules. The area is prone to severe weather events such as hurricanes and thunderstorms, which pose risks to overhead lines and substation equipment. The facility's design likely includes measures to withstand high winds and flooding, common in coastal Mississippi.