Clark Fork Substation - NorthWestern Energy Electrical Substation in Montana

Clark Fork Substation is an operational electrical substation located in Montana, United States. Owned and operated by NorthWestern Energy, the facility handles transmission voltages of 161 kV and 100 kV, placing it in the medium-to-high voltage range typical for regional power distribution and grid interconnection. 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. As part of NorthWestern Energy's transmission network, it likely incorporates modern substation automation protocols such as IEC 61850 to ensure efficient monitoring and control. Situated in western Montana, the substation supports the local electrical infrastructure in a region characterized by mountainous terrain and a mix of urban and rural loads. Its role is critical for maintaining grid stability and delivering power to communities and industries in the area, contributing to the overall resilience of the regional power system.

The substation is located in western Montana, a region with diverse geography including forests and rivers. Electrical infrastructure in such areas must consider wildfire risk and environmental stewardship, often requiring vegetation management and compliance with local land-use regulations. The facility's voltage levels indicate its importance for regional grid stability, and its operation aligns with NERC standards for reliability and environmental protection.