Overview
Sammamish Substation is an operational electrical substation in Washington, United States, owned by Puget Sound Energy. It operates at 230 kV and 115 kV, serving the local grid.
Sammamish Substation is an operational electrical substation located in Washington, United States. Owned and operated by Puget Sound Energy, it plays a key role in the regional power distribution network. The facility is situated in a suburban area east of Seattle, supporting the growing energy demands of the Sammamish Plateau. The substation operates at dual voltage levels of 230 kV and 115 kV, indicating its role in both transmission and sub-transmission functions. As part of Puget Sound Energy's infrastructure, it adheres to North American Electric Reliability Corporation (NERC) reliability standards and Federal Energy Regulatory Commission (FERC) regulations. The facility likely employs modern switchgear and automation systems compliant with IEC 61850 standards for substation automation. Sammamish Substation contributes to grid stability in the Pacific Northwest, a region with significant hydropower resources and increasing renewable energy integration. Its location in a rapidly growing suburban area underscores its importance in maintaining reliable electricity supply for residential and commercial customers. The substation's dual-voltage capability enhances operational flexibility and resilience.
Environmental context
The substation is located in a suburban area with mixed residential and natural landscapes, including nearby forests and wetlands. Its operation supports the integration of renewable energy sources common in the Pacific Northwest, such as hydropower and wind. The facility's design likely includes measures to minimize electromagnetic field impacts and stormwater runoff, aligning with local environmental regulations.
Frequently asked questions
Sammamish Substation is located in Washington, United States, near the city of Sammamish on the east side of Lake Washington.
Sammamish Substation operates at 230 kV and 115 kV, serving both transmission and sub-transmission functions in the regional power grid.
Sammamish Substation is owned and operated by Puget Sound Energy, a major utility serving the Pacific Northwest region.
As part of the US electrical grid, Sammamish Substation must comply with NERC reliability standards and FERC regulations, as well as state-level utility commission rules.
By operating at dual voltage levels, Sammamish Substation provides flexibility in power distribution and helps maintain grid stability in the growing Sammamish area.