A coalition of nonprofits, businesses and local governments argued the law wrongly limited aspects of the state's climate ...

The fate of a voter-approved measure to slow Washington’s shift from natural gas toward technology like electric heat pumps will be decided by the state Supreme Court. The initiative targets changes ...

Washington state is facing a big challenge when it comes to electricity. Electricity demand is surging due to electric vehicles, and more data-intensive industries coming online, like the $5 billion ...

In one of his first acts as Washington’s governor, Bob Ferguson created a workgroup of environmentalists, tech leaders, and government officials to find common ground in the great AI data center ...

PULLMAN, Wash. — A groundbreaking report from Washington State University (WSU) researchers suggests that integrating solar power with agricultural practices, known as "agrivoltaics," could ...

SEATTLE—The last coal-fired power plant in Washington state was set to go cold at the end of the year. It would then switch to natural gas, cutting carbon emissions in half. The shutdown had been in ...