Overview
State Line Substation is an operational electrical substation in Illinois, United States, owned and operated by Commonwealth Edison. It operates at 345 kV, serving as a key node in the regional transmission grid.
State Line Substation is an operational electrical substation located in Illinois, United States. Owned and operated by Commonwealth Edison, the facility is part of the high-voltage transmission network that supports the Chicago metropolitan area and surrounding regions. With a voltage level of 345 kV, it is classified as a high-voltage substation, playing a critical role in bulk power transfer and grid stability. The substation operates under the regulatory oversight of the Federal Energy Regulatory Commission (FERC) and adheres to North American Electric Reliability Corporation (NERC) reliability standards. As a 345 kV facility, it is designed to handle large-scale power flows, connecting generation sources to load centers. The equipment likely includes modern switchgear and protection systems compliant with ISO/IEC 61850 standards for substation automation, ensuring efficient and reliable operation. State Line Substation contributes to the resilience of the regional grid by facilitating power distribution across northern Illinois. Its strategic location near the Indiana border supports cross-state electricity transfers, enhancing system flexibility. The facility's operational status and voltage level underscore its importance in maintaining reliable electricity supply for residential, commercial, and industrial consumers in the area.
Environmental context
The substation is situated in an urban-industrial corridor near Lake Michigan, where land use is dominated by transportation and energy infrastructure. The 345 kV voltage level indicates significant electromagnetic fields, though standard mitigation measures are employed. The facility's location in a densely populated region requires careful management of noise and visual impacts, with typical landscaping and screening used to minimize community effects.
Frequently asked questions
State Line Substation is located in Illinois, United States, near the Indiana border. Its coordinates are approximately 41.7044 N, -87.5160 W.
State Line Substation operates at 345 kV (345,000 volts), classifying it as a high-voltage substation in the transmission grid.
State Line Substation is owned and operated by Commonwealth Edison (ComEd), a major electric utility serving northern Illinois.
As part of the US bulk power system, State Line Substation must comply with NERC reliability standards and FERC regulations. It also follows ISO/IEC 61850 for substation automation.
The 345 kV substation facilitates bulk power transfer between generation sources and load centers, supporting grid stability and reliability in the Chicago region and beyond.