ColumbiaGrid is a membership non-profit corporation providing regional grid planning in the Northwest portion of the Western Interconnection that strives for excellence and exists to:

  • improve reliability of the transmission grid via collaborative, cooperative, cost-effective, efficient and insightful long-term regional transmission (‘grid’) expansion planning consistent with planning and reliability standards (i.e. our Core services); and
  • analyze, develop, or facilitate solutions relating to the improved use or expansion of the transmission grid (i.e. our Non-Core services).
  • In carrying out its Mission and Vision, ColumbiaGrid utilizes an integrated single-system view of its Members’ and Qualified Non-Member Parties’ systems and endeavors to provide sustainable benefits for them (which could not be achieved individually or separately), their customers, and the region consistent with the public interest. ColumbiaGrid does not own any distribution, generation, or transmission facilities.

    ColumbiaGrid Bylaws
    ColumbiaGrid Annual Reports

    ColumbiaGrid's planning 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's planning and board 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 planning agreements, we notify affected persons of our activities and encourage their participation.


    Member: Avista Corporation      Project: ColumbiaGrid     
    Avista Corporation

    "In ColumbiaGrid, we now have the ability to resolve the three fundamental transmission questions: What transmission facilities should be built? Who should build them? Who should pay for them? With ColumbiaGrid's independent staff and process to resolve disputes, we can answer these questions effectively and in a timely fashion to facilitate our region's new resource development needs."
    ~~ Jeff Schlect, Manager, Transmission Services, Avista