OLYMPIA — Gov. Bob Ferguson on Monday signed legislation aimed at strengthening Washington’s electric grid, expanding transmission capacity and supporting the state’s transition to a clean energy future.

Senate Bill 6355, sponsored by Sen. Victoria Hunt (D-Issaquah), establishes the Washington Electric Transmission Authority, a statewide entity designed to improve coordination, reliability and long-term planning of the state’s electric transmission system. As Washington faces rising electricity demand and an accelerated transition to clean energy, the need for modern, interconnected transmission infrastructure has become increasingly urgent.

“Washington cannot meet its clean energy goals or support continued economic growth without a reliable, modern grid,” Hunt said. “This law is about building the infrastructure that connects communities, unlocks new ...