Let’s Go Washington is collecting signatures on a petition asking the state Legislature to repeal the cap-and-trade program, which went into effect this year.

An engineering and consulting firm offered Washington state lawmakers on the Senate-House Joint Transportation Committee ideas on how to replace gas guzzlers with electric vehicles.

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.

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.