TransAlta

Miriam Duerr / Washington Dept. of Ecology

It's 14 years off in the future. But a compromise deal will shut down the Northwest's largest coal-fired power plant near Centralia. Legislation is headed to the governor's desk following a vote Thursday in the Washington senate.

The owner of the largest coal-fired power plant in the Northwest has agreed to phase out coal-burning by the end of 2025.

Washington’s governor and environmental groups announced an agreement with TransAlta Corporation Saturday. Within hours, the Washington State Senate passed a bill to turn the deal into law.