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Published: March 01, 2022

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

At their February 17, 2022 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 [email protected]

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Member: Chelan County PUD      Project: ColumbiaGrid     
Chelan County PUD

"Chelan PUD is a strong supporter of ColumbiaGrid and the work that’s accomplished through the transmission Planning and Expansion Functional Agreement (PEFA). As a result of that process, the mid-C utilities (Chelan, Grant and Douglas PUDs) and Bonneville Power Administration were able to reach an agreement that defined the need for a new transmission line, as well as determine who will construct, own and pay for the facility. Those difficult decisions were made successful through the expert and independent expertise of the ColumbiaGrid staff."
~~ Chad Bowman, Director - Transmission and Compliance