Caplis Substation - 138 kV Electrical Substation in the United States

Caplis Substation is an operational electrical substation located in the United States, owned and operated by Southwestern Electric Power Company (SWEPCO), a subsidiary of American Electric Power. The facility operates at a voltage of 138 kV, which is a common transmission-level voltage for regional power distribution. As a substation, it plays a critical role in stepping down high-voltage electricity from transmission lines to lower voltages for local distribution. The substation's technical specifications indicate a voltage level of 138 kV, placing it within the medium-to-high voltage range typical for sub-transmission and distribution substations. In the United States, such facilities are subject to reliability standards set by the North American Electric Reliability Corporation (NERC) and regulated by the Federal Energy Regulatory Commission (FERC) for interstate electricity transmission. SWEPCO, as a utility, must comply with these standards to ensure grid stability and safety. Caplis Substation is part of the broader electrical infrastructure that supports residential, commercial, and industrial customers in the region. Its operational status ensures continued reliability of power supply. The substation's location and voltage level contribute to the resilience of the local grid, facilitating efficient electricity transfer and distribution.

The substation is located in a region with a humid subtropical climate, which can affect equipment performance and maintenance schedules. The 138 kV voltage level indicates a moderate scale of operation, with potential electromagnetic field (EMF) considerations near residential areas. The facility's rural or suburban setting may reduce direct environmental impact compared to urban substations, but it still requires adherence to environmental regulations regarding oil containment and wildlife protection.