WA HB1673

Creates the Washington Electric Transmission Authority to expand transmission capacity, coordinate upgrades to existing lines, support development of microgrids and distributed energy resources, and collaborate with utilities, neighboring states, and federal entities on regional transmission projects

Establishes a nine-member board of directors appointed by the governor with expertise in areas including public utilities, clean energy, ratepayer protection, electrical workers, infrastructure financing, and tribal representation, with four-year staggered terms

Requires the Department of Commerce to complete a 20-year transmission needs assessment and enhancement roadmap by October 30, 2026, identifying high-priority corridors, grid-enhancing technology investments, and nonwires alternatives

Grants the authority powers including eminent domain for transmission rights-of-way, ability to own transmission equipment, enter partnerships, apply for federal loans, and sell projects to utilities or transmission developers through competitive bidding

Allows the Utilities and Transportation Commission to provide up to 2% incentive return on investment through December 31, 2040 for electrical company capital expenditures on grid-enhancing technologies and advanced conductor reconductoring projects installed after July 1, 2025