Tonne 138kV Substation - Operational Substation in the United States

Tonne 138kV Substation is an operational electrical substation located in the United States, owned and operated by Commonwealth Edison, a major utility in the Midwest. The substation operates at a voltage of 138 kV, which is a common transmission-level voltage in the US grid, indicating its role in bulk power transmission and distribution. The facility 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 138 kV substation, it is part of the high-voltage network that connects generation sources to load centers, and its operation is critical for grid stability in the region. Tonne 138kV Substation plays a key role in the electrical infrastructure of the area, supporting the delivery of electricity to residential, commercial, and industrial customers. Its location in the United States places it within one of the world's largest and most complex power grids, where substations like this are essential for voltage regulation and system reliability.

The substation is located in an urban or suburban area near Chicago, Illinois, where electrical infrastructure is critical for supporting dense population and industrial activity. The 138 kV voltage level indicates it is part of the transmission network, which can have environmental considerations such as electromagnetic fields and land use. However, substations typically have a localized footprint and are designed to minimize environmental impact through proper siting and equipment.