East Colfax Substation: 115 kV Substation in the United States

East Colfax Substation is an operational electrical substation located in the United States, owned and operated by Avista. The facility operates at a voltage of 115 kV, classifying it as a transmission-level substation that plays a key role in the regional power grid. As a 115 kV substation, East Colfax Substation is part of the high-voltage transmission network that interconnects generation sources with distribution systems. In the United States, such facilities are subject to NERC reliability standards and FERC regulation, ensuring grid stability and compliance with mandatory reliability requirements. The substation likely includes switchgear, transformers, and protection systems typical of this voltage class. The substation's location in eastern Washington supports the regional electrical infrastructure, contributing to reliable power delivery for surrounding communities. Its operation under Avista, a major utility in the Pacific Northwest, aligns with the company's commitment to maintaining a resilient and efficient transmission network.

The substation is situated in a rural area near Colfax, Washington, where the surrounding landscape is primarily agricultural. Electrical infrastructure in such settings must consider potential impacts on farmland and wildlife, though substations generally have a localized environmental footprint. The 115 kV voltage level indicates a moderate scale of operation, with standard mitigation measures for electromagnetic fields and noise.