Transmission Projects

New Projects Albeni Falls - Sand Creek Big Eddy-Knight Transmission Project Central Ferry-Lower Monumental Grand Coulee Line Replacement Project I-5 Corridor Reinforcement McNary-John Day Port Angeles-Juan de Fuca Summer Falls- Main Canal Swan Valley-Teton Projects on hold Completed Reliability Projects Line Rebuild, Relocation and Substation Projects Albany-Burnt Woods & Santiam-Toledo Central Ferry Substation Chehalis- Centralia Transmission Line Rebuild Hooper Springs- Lower Valley Energy Libby (FEC) to Troy Rebuild Olympic Peninsula Reinforcement Project Palisades-Goshen Rebuild Completed Line Rebuild, Relocation and Substation Projects

Swan Valley-Teton BPA plans to replace one tower and the tops of two towers at Teton Pass, summer 2005. The replacement tower and tops are designed to better withstand the extreme weather conditions and high elevation at the pass. BPA constructed a second Swan Valley-Teton 115-kilovolt transmission line in 2001 to improve transmission reliability to Lower Valley Energy and the Jackson, Wyo. area. The new line has solved voltage problems in the Jackson Hole area, with the exception of an ice-loading problem that has been identified on three towers on Teton Pass. The towers at the pass have posed a problem in heavy ice loading conditions during the winter months when one or both lines have shorted out and power was temporarily lost. BPA has identified the problem, where it occurs, and designed a solution. In the winter months, the wires collect a thick coat of ice. When the weather warms up, the ice falls off the wires suddenly, causing them to jump into and connect with nearby wires. The replacement tower and tops will widen the distance between the wires so they will not hit adjacent wires when the ice suddenly falls. Schedule Construction is scheduled to start in mid-July 2005 and be completed by late October 2005. Construction Photos Letter Fact Sheet Map Swan Valley-Teton Project Information