Overview
ComEd Tollway 138kV-345kV Substation is an operational electrical substation in Illinois, United States, owned by Commonwealth Edison. It operates at 345 kV and 138 kV, serving as a key node in the regional transmission grid.
ComEd Tollway 138kV-345kV Substation is an operational electrical substation located in Illinois, United States. Owned and operated by Commonwealth Edison (ComEd), a major electric utility serving northern Illinois, this facility is part of the high-voltage transmission network that delivers electricity to millions of customers. The substation's voltage levels of 345 kV and 138 kV indicate its role in both bulk power transmission and sub-transmission distribution. As a substation operating under the jurisdiction of the U.S. Federal Energy Regulatory Commission (FERC) and subject to North American Electric Reliability Corporation (NERC) reliability standards, ComEd Tollway Substation must comply with stringent grid stability and cybersecurity requirements. The facility likely employs modern switchgear and automation systems, potentially adhering to IEC 61850 standards for substation communication. Its location near a major highway suggests strategic siting for access and grid connectivity. The substation plays a critical role in maintaining grid reliability for the Chicago metropolitan area and surrounding regions. By stepping down voltage from 345 kV to 138 kV, it facilitates efficient power distribution to local utilities and industrial customers. Its operational status underscores its ongoing contribution to the resilience of the regional electrical infrastructure.
Environmental context
The substation is situated in a suburban area of Illinois, characterized by a mix of residential, commercial, and transportation land uses. Its proximity to a major tollway implies potential electromagnetic field considerations and noise mitigation measures. The facility's design likely incorporates oil containment systems for transformers to prevent soil and water contamination. As part of the regional grid, it supports the integration of renewable energy sources and helps reduce transmission losses through high-voltage operation.
Frequently asked questions
ComEd Tollway 138kV-345kV Substation is located in Illinois, United States, near the coordinates 42.063620, -88.240136, close to a major tollway.
The substation operates at two voltage levels: 345 kV for high-voltage transmission and 138 kV for sub-transmission, allowing it to step down power for distribution.
The substation is owned and operated by Commonwealth Edison (ComEd), a subsidiary of Exelon Corporation, serving northern Illinois.
As part of the U.S. bulk power system, the substation must comply with NERC reliability standards and FERC regulations, including requirements for grid stability, cybersecurity, and maintenance.
A 345 kV substation serves as a critical node in the transmission network, connecting high-voltage lines from power plants to lower-voltage distribution systems, ensuring efficient long-distance power transfer and grid reliability.