Return to all Announcements  |  Send to a Friend  |  View Printable

Published: March 01, 2016

Board Approves ColumbiaGrid 2016 Update to the 2015 Biennial Transmission Expansion Plan

At their February 17, 2016 meeting, ColumbiaGrid’s Board of Directors adopted the Update to the 2015 Biennial Transmission Expansion Plan. The contents of this updated plan include the summary of major activities that occurred after the issuance of the 2015 Biennial Transmission Expansion Plan, such as the implementation of Order 1000, results of 2015 System Assessment, 2015 Sensitivity Studies, economic planning studies, and independent third-party review of the parties’s physical security assessments (CIP-014). The Update to the 2015 Biennial Transmission Expansion Plan document is posted on ColumbiaGrid’s website and can be found at (

For more information, please contact Paul Didsayabutra at

PDF  Download PDF


Member: Tacoma Power      Project: ColumbiaGrid     
Tacoma Power

"As a charter member of ColumbiaGrid, Tacoma Power has observed the benefits for its customers of regional transmission planning. Engaging in the ColumbiaGrid collaborative transmission planning process has fostered diverse and innovative solutions. This open process for identifying and resolving transmission challenges has delivered cost-effective reliability to our entire region."
~~ William A. Gaines, Director of Utilities