Overview
Yelm Substation is an operational 115 kV substation owned by Puget Sound Energy in Yelm, Washington, serving the local electrical grid.
Yelm Substation is a 115 kV electrical substation located in Yelm, Washington, United States. Owned and operated by Puget Sound Energy, the facility plays a key role in the regional power distribution network, stepping down transmission voltage for local distribution. The substation operates at 115 kV, a common voltage level for sub-transmission and distribution in the United States. As part of Puget Sound Energy's infrastructure, it is subject to North American Electric Reliability Corporation (NERC) reliability standards and Federal Energy Regulatory Commission (FERC) regulations, ensuring grid stability and compliance with mandatory reliability requirements. Yelm Substation supports the growing community of Yelm and surrounding areas by providing reliable electrical service. Its strategic location in Thurston County contributes to the resilience of the regional grid, particularly as demand increases with local development. The facility's operational status underscores its ongoing role in maintaining power supply continuity.
Environmental context
The substation is situated in a mixed urban-rural area in western Washington, characterized by temperate rainforest climate with high precipitation. The 115 kV voltage level indicates moderate environmental footprint, with typical considerations including electromagnetic field management and stormwater runoff control. The facility's location near residential and agricultural zones requires adherence to local environmental regulations for noise and visual impact.
Frequently asked questions
Yelm Substation is located in Yelm, Washington, United States, at coordinates 46.946053, -122.596066.
Yelm Substation operates at 115 kV, a standard voltage level for sub-transmission and distribution in the United States.
Yelm Substation is owned by Puget Sound Energy, a major utility serving the Pacific Northwest.
As part of the U.S. electrical grid, Yelm Substation must comply with NERC reliability standards and FERC regulations for transmission and distribution assets.
A 115 kV substation steps down high-voltage transmission power to lower voltages for local distribution, serving residential, commercial, and industrial customers.