Cedar Grove Substation: Operational Electrical Substation in Arkansas, United States

Cedar Grove Substation is an operational electrical substation located in Arkansas, United States, and operated by Entergy Arkansas. The facility handles transmission-level voltage of 161 kV and distribution-level voltage of 13.86 kV, indicating a medium-scale substation that steps 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 enforce reliability standards for the bulk power system. Entergy Arkansas, as a utility, must comply with these standards to ensure grid stability. The facility's dual voltage levels suggest it plays a role in both transmission and distribution networks. As part of the Entergy Arkansas grid, Cedar Grove Substation contributes to the reliable delivery of electricity to homes and businesses in the region. Its operational status and location in a rural area underscore its importance for local energy access and community service.

The substation is located in a rural area of Arkansas, where the surrounding environment includes agricultural land and natural habitats. Electrical infrastructure like Cedar Grove Substation must consider electromagnetic field (EMF) exposure and potential impacts on local wildlife, though modern designs typically mitigate these effects. The facility's age and maintenance practices influence its environmental footprint, with older switchgear potentially containing SF6 gas, a potent greenhouse gas.