Substation 20 - 115 kV Electrical Substation in Alaska, United States

Substation 20 is an operational electrical substation located in Alaska, United States, with a voltage level of 115 kV. This places it within the medium-voltage range typical for regional distribution and sub-transmission networks. The facility is part of the broader North American power grid, which operates under NERC reliability standards and FERC regulation for transmission-level assets. As a substation, its primary function is to step down voltage for local distribution or to interconnect different parts of the grid. The 115 kV voltage level is commonly used for sub-transmission in rural or remote areas, such as Alaska, where long distances and challenging terrain require robust infrastructure. The facility's operational status indicates it is actively contributing to the electrical network. The environmental context of this substation includes its location in a region with extreme weather conditions, which can affect infrastructure reliability. Substations like this are critical for maintaining power supply to communities and industrial facilities in Alaska. The facility's role in the grid underscores the importance of resilient electrical infrastructure in remote and climatically harsh environments.

Located in Alaska, Substation 20 operates in a region with extreme cold, permafrost, and seasonal variations that challenge infrastructure durability. The 115 kV voltage level is typical for sub-transmission in remote areas, where grid stability is critical for communities and industries. The facility's design must account for environmental stressors such as ice loading and temperature fluctuations to ensure reliable power delivery.