NOTICE TO BIDDERS Pursuant to Revised Code of Washington §43.52.565, Energy Northwest, a Joint Operating Agency and Municipal Corporation in the State of Washington, is inviting competitive proposals from qualified Bidders for the Normal Transformer Iso-Phase and Non-Segregated Bus project at Columbia Generating Station, as detailed in Request for Proposal (RFP) 717397 documents. For copies of RFP 717397 documents contact Amie Bootsma at arbootsma@energy-northwest.com. IPL0350524 Jun 18 2026