Overview
Electric Junction Substation is an operational 345 kV substation in the United States, owned and operated by Commonwealth Edison. It plays a key role in the regional high-voltage transmission grid.
Electric Junction Substation is a high-voltage electrical substation located in the United States, specifically in the state of Illinois near the city of Aurora. Operating at 345 kV, it is a critical node in the transmission network, facilitating the step-down and distribution of bulk power to local utilities and industrial customers. The substation is owned and operated by Commonwealth Edison (ComEd), a major investor-owned utility serving northern Illinois. As a 345 kV substation, Electric Junction operates within the regulatory framework of the North American Electric Reliability Corporation (NERC) and is subject to Federal Energy Regulatory Commission (FERC) oversight for transmission reliability. The substation likely employs modern switchgear and protection systems compliant with IEEE standards, ensuring grid stability and fault isolation. ComEd's infrastructure in this region supports the densely populated Chicago metropolitan area and surrounding industrial zones. The substation's location in the Midwest places it within the PJM Interconnection or MISO regional transmission organization, depending on exact boundaries. Its role is vital for maintaining voltage stability and load balancing, particularly during peak demand periods. The facility contributes to the resilience of the regional grid, supporting economic activity and residential power supply across a wide service area.
Environmental context
The substation is situated in a suburban/industrial area near Aurora, Illinois, within the Fox River watershed. The surrounding landscape includes a mix of residential, commercial, and light industrial zones. High-voltage substations like this one have minimal direct environmental impact but are critical for integrating renewable energy sources such as wind and solar into the grid. Electromagnetic fields (EMF) are managed through standard siting and shielding practices. The facility's operation supports energy efficiency by reducing transmission losses through high-voltage lines.
Frequently asked questions
Electric Junction Substation is located in the United States, near Aurora, Illinois, at coordinates 41.797847, -88.233356. It serves the northern Illinois region.
Electric Junction Substation operates at 345 kV, which is a high-voltage transmission level used for long-distance power transfer and interconnection with the bulk electric grid.
The substation is owned and operated by Commonwealth Edison (ComEd), a major electric utility in Illinois serving the Chicago area and northern Illinois.
As part of the US transmission grid, the substation must comply with NERC reliability standards and FERC regulations, including requirements for voltage control, protection systems, and cybersecurity.
A 345 kV substation transforms high-voltage electricity from transmission lines to lower voltages for distribution, or interconnects multiple transmission lines. It is critical for grid stability and bulk power transfer.