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Grand Coulee Transmission Line Replacement Project
BPA was asked by the Bureau of Reclamation to design and construct six new 500-kV overhead transmission lines at Grand Coulee Dam. BPA will replace the existing underground transmission lines with new overhead transmission lines, construct new tower structures, improve some access roads and add some new access roads within the Project Area.
 
The new overhead lines will transfer power that is generated at the Third Powerplant, across the Columbia River and over the Visitor Center area, and then proceed uphill where they will connect to existing lines that transfer power from this area into the Regional power grid.
 
More information and project documents
 
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