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Cascade Renewable files site certification application for buried HVDC line in Columbia River
Summary
Cascade Renewable Transmission LLC submitted a site certification application to FSEC for a proposed buried HVDC transmission line in the Columbia River that would carry about 1,100 MW from east‑of‑Cascades resources toward the Portland area and require coordination with Oregon and federal agencies.
Cascade Renewable Transmission LLC filed a formal application for site certification with the Energy Facility Site Evaluation Council on Oct. 6 and staff briefed the council on the application Oct. 15.
FSEC staff said the high‑voltage direct current (HVDC) project would run in the Columbia River bed from near The Dalles, Oregon, west toward the Portland area, then reenter the river and proceed to a converter station and interconnect at Portland General Electric’s Harbison substation. The Washington portion would exit and reenter…
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