BPA released the draft environmental assessment for the proposed Pacific
Direct Current Intertie Upgrade.
BPA is proposing to upgrade equipment on the Celilo-Sylmar 500-kilovolt
transmission line. The line runs from the Celilo converter station in The
Dalles, Ore. to the Nevada-Oregon border (265 miles), where BPA’s ownership of
the 846-mile line terminates. The upgrades would increase the PDCI transfer
capability from its current 3100 megawatt (MW) capacity to 3220 MW and would
improve reliability and performance of the aging direct current line.
The draft EA describes the project, why it is needed, and discusses the
environmental impacts the project would create. It also lists mitigation
measures that would lessen or eliminate those impacts. The EA is available for
review and comment through March 3, 2014.