SUMMIT Substation, Wisconsin | United States Electrical Infrastructure

SUMMIT is an operational electrical substation located in Wisconsin, United States, with a voltage level of 138 kV, classifying it as a medium-to-high voltage facility within the regional transmission and distribution network. The substation is part of the broader North American power grid, which is regulated by NERC reliability standards and FERC oversight for interstate electricity transmission. The substation operates under the regulatory framework of the United States, where NERC enforces reliability standards for bulk power systems, and FERC oversees wholesale electricity markets and transmission tariffs. At 138 kV, SUMMIT likely serves as a distribution substation stepping down voltage for local industrial, commercial, or residential customers, or as part of a sub-transmission network. Typical equipment includes circuit breakers, transformers, and switchgear compliant with IEEE and ANSI standards. The facility's location in Wisconsin places it within the Midcontinent Independent System Operator (MISO) region, which manages grid reliability and market operations across 15 states. The substation contributes to the resilience of the local grid, supporting energy delivery to surrounding communities and industries. Its operational status ensures continued integration of generation sources and load balancing in the area.

The substation is situated in a rural or suburban area of Wisconsin, where land use is primarily agricultural or mixed residential. The 138 kV voltage level indicates moderate environmental footprint, with typical considerations including electromagnetic field (EMF) exposure, vegetation management for right-of-way clearance, and stormwater runoff from gravel or paved surfaces. The facility's operation aligns with state-level environmental regulations and local zoning ordinances.