Jonestown Substation - 115 kV Electrical Substation in Mississippi, USA

Jonestown Substation is an operational electrical substation located in Mississippi, United States. The facility is owned and operated by Entergy Mississippi, a major utility in the region. The substation operates at a voltage of 115 kV, classifying it as a medium-voltage substation that plays a key role in distributing electricity to local communities. 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 part of Entergy Mississippi's network, it adheres to NERC's Critical Infrastructure Protection (CIP) standards and FERC's regulations for transmission-level assets. The 115 kV voltage level is typical for sub-transmission and distribution substations in the region. This substation contributes to the electrical infrastructure of the Mississippi Delta area, supporting residential, agricultural, and commercial loads. Its operational status ensures grid stability and reliability for the surrounding region. The facility's location in a rural area underscores its importance in providing electricity to underserved communities.

The substation is located in the Mississippi Delta region, characterized by flat agricultural land and proximity to the Mississippi River. The area is prone to flooding and severe weather, including hurricanes and tornadoes, which can impact grid reliability. The substation's design likely includes measures to withstand such events, such as elevated equipment and flood protection. Its rural location means lower population density but critical reliance on this infrastructure for agricultural operations.