St Clair Substation | 115/230 kV Electrical Substation in Washington, USA

St Clair Substation is an operational electrical substation located in Washington, United States, owned and operated by Puget Sound Energy. The facility handles voltage levels of 115 kV and 230 kV, indicating its role in both sub-transmission and transmission within the regional power grid. As a substation in the United States, St Clair Substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) reliability standards and Federal Energy Regulatory Commission (FERC) oversight for transmission-level assets. The facility likely employs modern substation automation technologies, such as those based on the IEC 61850 standard, to ensure reliable and efficient grid operations. The substation plays a critical role in maintaining grid stability and power distribution for the surrounding area. Its dual voltage levels allow it to interconnect different parts of the electrical network, supporting both local distribution and bulk power transmission. The facility's operational status contributes to the resilience of the regional energy infrastructure.

Located in the Pacific Northwest, St Clair Substation operates in a region with significant hydropower resources and a growing focus on renewable energy integration. The substation's voltage levels and grid connectivity support the transmission of electricity from diverse generation sources, including hydro, wind, and solar, to load centers. Its location in a temperate climate zone with moderate seismic activity requires infrastructure designed to withstand environmental stresses.