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.

Washington’s Department of Ecology confirmed that it raised almost $300 million from the state’s first quarterly cap-and-trade auction held in February.

A coalition of builders and other parties filed suit to revoke new state rules that ban the installation of gas-fired space and water heaters in new buildings.

The Washington House voted to require wind turbine lights be turned off at night when not triggered by airplanes.

Critics of a Washington bill to impose a road usage fee on electric and hybrid vehicles lined up to testify at the state capitol.

The bill to create a road usage fee for electric and hybrid vehicles in Washington is more of a conversation starter than a nailed-down piece of legislation.

A legislative effort to make Washington more attractive to the alternative jet fuel industry has reached the state Senate’s Ways and Means Committee.

A Washington House committee passed a bill to add advanced nuclear to the alternative power sources that the state can use to replace fossil fuels.

A bill to provide funding to deal with Washington’s droughts received strong support in a legislative hearing.