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Puget Sound Energy electric transmission project

Novelty Hill - Cottage Brook 115 kV transmission line

Winter 2010-11 project completion
  • We completed construction of the new 115 kV transmission line in October 2010
  • Restoration and mitigation work was completed in December 2010. We will be monitoring new plantings for several years to ensure their survival
Project overview

Puget Sound Energy constructed a new 115 kilovolt transmission line in the Novelty Hill area of unincorporated King County. We constructed the new line within our existing cross-country transmission line corridor between NE Novelty Hill Road and Avondale Road NE. We did not expand the corridor size, but cleared some trees to accommodate the new line.


PSE built the new line to increase the reliability of the electrical system and to meet additional demand, resulting from on-going growth in Redmond and east King County. Adding new transmission lines creates redundancy in the system, thus making it more reliable.

What is a transmission line?

Transmission lines are key elements in the electrical distribution system. The lines safely transport high voltage electricity from power generation sources like dams and wind generating facilities to substations in local communities. Transmission normally takes place at voltages of 55 kV and higher.

Download full-sized map

Project map (527 KB PDF)

Committed to keeping you informed

PSE will continue to provide updates to the community. We will notify residents and businesses near the project area when construction will occur. We aim to complete the work with as little disruption as possible.

Download the information

Download these PDF files for more detail on PSE's Novelty Hill transmission project.
Redmond Neighborhood Blog post
Construction notice, April 2010 (74 KB PDF)
Meeting invite, Feb. 2008  (297 KB PDF)
Fact Sheet  (152 KB PDF) 
Project map (527 KB PDF)
Community Update, Jan 2008  (75 KB PDF)