The Frequency Changing Station in East Central, Spokane, Washington is a building listed on the National Register of Historic Places.

Power was generated at the Nine Mile Falls dam and transmitted to the Frequency Changing Station.

To provide power to the rail network outside Spokane, the station converted a portion of the power to alternating current and fed it to a series of electrical substations spaced about 15 miles (24 km) on the operating line.

[2] The railroad connected the cities of Colfax, Washington and Moscow, Idaho to Spokane, and the electric railway figured heavily in the rapid development of the area where it passed.

This article about a property in Washington on the National Register of Historic Places is a stub.