Heisson Substation - 115 kV Electrical Substation in Washington, USA

Heisson Substation is an operational electrical substation located in Washington State, United States, near the coordinates 45.825085, -122.496052. The facility operates at a voltage of 115 kV, classifying it as a medium-voltage substation typical of regional distribution networks. As part of the U.S. electrical infrastructure, it falls under the regulatory oversight of NERC reliability standards and FERC for transmission-level assets, though local distribution may be subject to state utility commission rules. The substation's 115 kV voltage level indicates its role in stepping down power from higher transmission voltages for local distribution or interconnecting regional grids. In the Pacific Northwest, substations like Heisson are integral to managing power flows from hydroelectric and renewable sources. The facility's operational status suggests ongoing maintenance and compliance with grid reliability requirements. Environmentally, the substation's location in a rural area near the Lewis River may have minimal direct ecological impact, but its role in grid stability supports the integration of renewable energy sources. Substations at this voltage level are critical for maintaining power quality and reliability for surrounding communities and industrial users.

The Heisson Substation is situated in a rural area of Washington State, near the Lewis River. Its 115 kV voltage level suggests it serves as a distribution substation, likely supporting local residential and agricultural loads. The surrounding forested landscape may require careful vegetation management to prevent outages, while the substation's operation aligns with regional grid stability needs, including integration of hydropower from the Columbia River system.