Siggelkow Substation - Wisconsin Electrical Substation Operated by American Transmission Company

Siggelkow Substation is an operational electrical substation located in Wisconsin, United States. Owned and operated by American Transmission Company, it plays a key role in the regional power grid. The facility operates at a voltage of 138 kV, which is typical for sub-transmission and distribution-level infrastructure in the United States. The substation falls under the regulatory oversight of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which set reliability standards for the bulk power system. As part of the American Transmission Company's network, it contributes to the reliable delivery of electricity across the Midwest. The 138 kV voltage level indicates it serves as a critical link between higher-voltage transmission lines and local distribution networks. Siggelkow Substation supports grid stability and power distribution in the surrounding region. Its operational status ensures continued service to residential, commercial, and industrial customers. The facility's location in Wisconsin places it within a region with diverse energy sources, including natural gas, coal, and renewable energy, requiring robust substation infrastructure to manage load and maintain reliability.

The substation is located in a temperate climate zone in Wisconsin, where seasonal weather variations, including winter storms and summer thunderstorms, can impact grid operations. The facility's 138 kV voltage level and urban-rural interface location require careful management of vegetation and wildlife interactions to prevent outages. Electromagnetic fields from substations are regulated by state and federal guidelines to minimize environmental impact.