Washington will convert its entire state-owned vehicle fleet to electric by 2040, according to an executive order issued by Gov. Jay Inslee.

An 80-MW solar farm proposed for central Washington is moving closer to state approval.

Washington State Ferries expects to convert from solely diesel fuel engines in its vessels to hybrid fuel-battery propulsion.

Washington officials are moving to respond to the state's extreme drought after admitting they were taken by surprise by how quickly it developed.

Blaming climate change, Washington Gov. Jay Inslee declared a drought emergency for nearly all of the state.

Construction has begun on a 15 MW solar farm in central Washington; the $25 million Columbia Solar project was OK'd in 2018 but encountered some delays.

A Washington Supreme Court hearing provided a practice run for possible upcoming court battles over Gov. Inslee’s partial vetoes of recently passed climate bills.

Gov. Jay Inslee vetoed a portion of a bill that would have tied Washington's EV adoption goals to a vehicle miles traveled fee.

The Wash. House voted 56-42 to send Gov. Jay Inslee a bill aimed at reducing greenhouse gas emissions from air conditioners and large refrigeration units.

A Washington state cap-and-trade bill designed to cut greenhouse gases and aid low-income residents faces a key vote Feb. 25.