NOTICE TO BIDDERS Energy Northwest, a joint operating agency and municipal corporation in the State of Washington, is soliciting Bidders to attend a Site visit and submit a proposal for the Main Generator Heavy Lift System and Heavy Haul at Columbia Generating Station as more fully described in the Invitation for Site Visit No. 715380 documents. Copies of the documents can be requested from Marcie Roberts at mlroberts@energy-northwest.com. IPL0288243 Nov 10 2025