Overview
Calico Rock Substation is an operational electrical substation in Arkansas, United States, owned and operated by Entergy Arkansas. It handles voltages of 161 kV and 13.86 kV, serving the local grid.
Calico Rock Substation is an operational electrical substation located in Arkansas, United States. Owned and operated by Entergy Arkansas, it plays a key role in the regional power distribution network. The substation handles primary voltage of 161 kV and secondary voltage of 13.86 kV, indicating its function as a transmission-to-distribution step-down facility. As part of the U.S. electrical infrastructure, this substation operates under the regulatory oversight of the Federal Energy Regulatory Commission (FERC) and adheres to North American Electric Reliability Corporation (NERC) reliability standards. Entergy Arkansas, a subsidiary of Entergy Corporation, serves approximately 700,000 customers in Arkansas, and this substation supports grid stability in the north-central part of the state. The substation's location in a rural area of Izard County underscores its importance in providing reliable electricity to local communities and industries. Its operational status ensures continued service to the surrounding area, contributing to the resilience of the regional power grid.
Environmental context
The substation is situated in a rural area of north-central Arkansas, characterized by forested hills and the White River basin. Its operation involves electromagnetic fields and potential oil leakage from transformers, which are managed under environmental regulations. The site's location away from dense urban centers reduces direct population exposure, but proximity to natural habitats requires adherence to environmental best practices.
Frequently asked questions
Calico Rock Substation is located in Arkansas, United States, near the town of Calico Rock in Izard County.
The substation handles primary voltage of 161 kV (transmission level) and secondary voltage of 13.86 kV (distribution level), indicating it serves as a step-down substation.
Calico Rock Substation is owned and operated by Entergy Arkansas, a subsidiary of Entergy Corporation that provides electricity to customers in Arkansas.
In the United States, substations must comply with NERC reliability standards for grid stability and FERC regulations for interstate electricity transmission. Entergy Arkansas also follows state-level utility regulations.
Substations are critical nodes in the power grid that transform voltage levels, switch circuits, and help control power flow. They ensure reliable electricity delivery from generation sources to end users.