Celilo Converter Station, HVDC converter station in Wasco County, United States.

Celilo Converter Station is a power conversion facility at the northern end of the Pacific DC Intertie that transforms alternating current into direct current for long-distance electricity transmission. The installation uses modern thyristor-controlled valves to move power between electrical grids serving the Pacific Northwest and Southern California regions.

The facility opened in 1970 and initially used mercury arc valves for power conversion at its core. A major modernization in 2004 replaced these older valves with new light-triggered thyristor groups that improved efficiency and reliability.

The station's name comes from Celilo, the nearby Columbia River settlement and ancient fishing site submerged by The Dalles Dam in 1957. Until security restrictions after September 11, 2001, the facility held informative displays on the history of DC transmission and the Pacific Intertie, which visitors could view.

The site sits in a remote part of Oregon and is not generally open to the public since it is an active power facility. Anyone interested in visiting should check in advance about access requirements and follow all site safety guidelines.

At the end of the 1960s a test transmission line rated at 1,333 kV was erected nearby, at 45.482792°N 120.814097°W, to test high-voltage DC equipment for a planned Celilo–Hoover Dam connection that was never built. The test facility is now abandoned and slated for demolition.