ColumbiaGrid was formed to improve reliability and the efficient use of the Northwest’s interconnected transmission grid. The organization provides cost-effective transmission planning and expansion; develops and implements solutions relating to the use and expansion of the transmission system in the Northwest; and supports effective market monitoring within the Northwest and the Western Interconnection. In carrying out its mission, ColumbiaGrid strives to provide sustainable benefits for its members and participants, their customers, and the region as a whole.

ColumbiaGrid's processes are transparent and open to all interested persons. We value broad participation and interaction with stakeholders, including customers, transmission providers, states, and tribes, and we provide a non-discriminatory forum for interested persons to receive and bring forward pertinent information concerning the regional interconnected transmission system.

ColumbiaGrid meetings are open to parties outside of members and participants, and all notices, agendas, and meeting materials are posted on this website. Under the terms of the bylaws and functional agreements, we notify affected persons of our activities and encourage their participation.


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