What is ColumbiaGrid?


ColumbiaGrid is a non-profit membership corporation formed in 2006 to improve the operational efficiency, reliability, and planned expansion of the Pacific Northwest transmission grid. The corporation itself does not own transmission, but its members and the parties to its agreements own and operate an extensive network of transmission facilities.

ColumbiaGrid has substantive responsibilities for transmission planning, reliability, and other development services. These tasks are defined and funded through a series of “Functional Agreements” with members and other participants. Development of these agreements is carried out in a public process with broad participation.

Information about membership and various forms of participation and involvement in ColumbiaGrid's  activities is in the Participation section.  For more detail, please consult our bylaws.

Materials related to all aspects of development and corporate business are posted on this website.  This includes a link near the end of the Documents section to activities early in ColumbiaGrid's history. To view our Annual Report, that is published every January, click here. To view our Strategic Plan for 2012-2016, click here.

Sign up here if you would like to add your name to ColumbiaGrid's Interested Persons list, our general information mailing list.


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