Overview
ComEd Evanston 138kV Substation is an operational electrical substation in Evanston, Illinois, owned and operated by Commonwealth Edison. It steps down transmission voltage for local distribution.
ComEd Evanston 138kV Substation is a key electrical infrastructure facility located in Evanston, Illinois, United States. Owned and operated by Commonwealth Edison (ComEd), a major investor-owned utility serving northern Illinois, this substation operates at 138 kilovolts (kV), a common transmission voltage level in the US. The facility plays a critical role in the regional power grid by transforming high-voltage electricity for distribution to residential, commercial, and industrial customers in the Evanston area. As part of ComEd's transmission network, the substation is subject to reliability standards set by the North American Electric Reliability Corporation (NERC) and regulated by the Federal Energy Regulatory Commission (FERC). The 138 kV voltage level indicates a medium-to-high voltage substation, typically serving as a bulk power delivery point. Substations of this scale often employ gas-insulated switchgear (GIS) or air-insulated switchgear (AIS) depending on site constraints and age. The facility's urban location in a densely populated suburb of Chicago underscores its importance for grid stability and service continuity. Environmentally, the substation's operation is managed to minimize electromagnetic field exposure and comply with local noise ordinances. Its urban setting means it supports a high density of electricity demand, contributing to the reliability of the greater Chicago metropolitan area. The substation's integration into ComEd's smart grid initiatives helps enhance outage management and load balancing, benefiting thousands of customers in Evanston and surrounding communities.
Environmental context
Located in an urban residential and commercial area of Evanston, Illinois, the substation operates within a densely populated environment. Its 138 kV voltage level requires careful management of electromagnetic fields and noise to meet local regulations. The facility's presence supports the electrification of the region, including electric vehicle charging and building electrification, aligning with Illinois' clean energy goals. Vegetation management around transmission lines helps maintain reliability while minimizing ecological disruption.
Frequently asked questions
ComEd Evanston 138kV Substation is located in Evanston, Illinois, United States, at coordinates 42.051090, -87.695796.
The substation operates at 138 kilovolts (kV), which is a standard transmission voltage in the US power grid.
The substation is owned and operated by Commonwealth Edison (ComEd), a subsidiary of Exelon Corporation serving northern Illinois.
As part of the US bulk power system, the substation must comply with NERC reliability standards and is regulated by FERC for transmission-level assets.
The substation steps down 138 kV transmission voltage for local distribution, ensuring stable power supply to Evanston's residential and commercial customers, and supports ComEd's smart grid initiatives.