Overview
Prospect Heights 138kV-345kV Substation is an operational electrical substation in Illinois, United States, owned and operated by Commonwealth Edison. It handles voltages of 138 kV and 345 kV, serving as a key node in the regional transmission grid.
Prospect Heights 138kV-345kV Substation is an operational electrical substation located in Prospect Heights, Illinois, United States. Owned and operated by Commonwealth Edison (ComEd), a major utility serving northern Illinois, this facility is part of the high-voltage transmission network. The substation handles two voltage levels: 138 kV and 345 kV, indicating its role in both sub-transmission and bulk power transmission. The substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which set reliability standards and oversee interstate electricity transmission. As a 345 kV facility, it is classified as a transmission-level asset critical for grid stability. The 138 kV side likely serves local distribution or sub-transmission needs. The substation's design and equipment likely comply with IEEE and IEC standards for substation automation and protection. Located in the Chicago metropolitan area, this substation supports the electrical infrastructure for a densely populated region with significant industrial, commercial, and residential demand. Its role in voltage transformation and power routing is essential for maintaining reliable electricity supply. The facility's operational status and integration into ComEd's grid contribute to the resilience of the regional power system.
Environmental context
The substation is situated in an urban-suburban environment in Prospect Heights, Illinois, part of the greater Chicago area. Its operation involves electromagnetic fields and potential noise from transformers and switchgear, typical for such facilities. The site's proximity to residential and commercial areas necessitates compliance with local zoning and environmental regulations. The substation's role in the grid helps reduce transmission losses by stepping down voltage for local distribution, indirectly supporting energy efficiency.
Frequently asked questions
The substation is located in Prospect Heights, Illinois, United States, approximately 25 miles northwest of Chicago.
The substation handles two voltage levels: 138 kV and 345 kV, serving both sub-transmission and bulk power transmission functions.
The substation is owned and operated by Commonwealth Edison (ComEd), the primary electric utility serving northern Illinois.
As part of the US transmission grid, the substation must comply with NERC reliability standards and FERC regulations, including requirements for grid stability and cybersecurity.
A 345 kV substation is a high-voltage transmission asset that interconnects major power lines, enabling long-distance electricity transfer and voltage transformation for distribution to lower-voltage networks.