Caroline Substation: 115 kV / 69 kV Electrical Substation in the United States

Caroline is an operational electrical substation located in the United States, with coordinates 44.722390, -88.837692. The facility operates at voltage levels of 115 kV and 69 kV, indicating its role in sub-transmission and distribution networks. As part of the U.S. electrical infrastructure, it supports the reliable delivery of electricity to local communities and industries. The substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which enforce reliability standards for bulk power systems. The dual-voltage configuration suggests it serves as a step-down point between transmission and distribution systems, typical for substations in rural or suburban areas. Environmentally, the substation's location in a region with cold winters and variable weather conditions necessitates robust design to maintain grid stability. Its operation contributes to the resilience of the local power grid, supporting residential, commercial, and agricultural loads in the area.

The substation is situated in a rural area of Wisconsin, characterized by agricultural land and cold winters. The voltage levels (115 kV and 69 kV) indicate it is part of the sub-transmission network, which is critical for distributing power from major transmission lines to local distribution systems. The facility's design must withstand seasonal temperature extremes and potential ice storms, common in the region, to ensure uninterrupted power supply.