Washington is expanding efforts to make the state a leader in emissions-free aviation, Gov. Jay Inslee signaled at the Paris Air Show this week.

Gov. Jay Inslee signed a bill requiring wind farms to turn off their blinking aviation obstruction lights at night when no low-flying aircraft are around.

The governor signed climate bills related to sustainable aviation fuel, local land-use planning, transmission planning, pumped storage and more.

Gov. Jay Inslee announced that he has approved a plan by Cypress Creek Renewables to construct two large solar farms in Yakima County.

Backers of a proposal intended to draw federal funding to create a hydrogen hub in the Pacific Northwest say their application is ready to be submitted.

Washington’s first cap-and-trade auction earned the state nearly $300 million in revenue and unloaded all allowances on offer.

Washington lawmakers won’t know until mid-March how much cap-and-trade revenue they will be able to spend during the 2023-25 budget period.

Washington’s 2023 legislature will offer less revolutionary climate action compared with previous years, but many environmental bills are still in the works.

An effort to reopen Washington’s last standing aluminum plant with a lower carbon footprint faltered after BPA declined to guarantee low-cost energy.