Gov. Jay Inslee approved a revised plan for the largest wind turbine farm in Washington, stretching across 24 miles in the Horse Heaven Hills in the southeastern part of the state.

The Wallula Gap project could also include an optional battery energy storage system not to exceed the nameplate capacity of the facility.

The developer of a large and controversial wind and solar farm in southeastern Washington contends the state’s siting body has ordered unscientific changes that make the project unviable.

Many residents believe they do not have a voice in the fate of a controversial proposed wind turbine farm south of the Washington city of Kennewick.

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

A bill to boost construction of renewable power in Washington picked up support — ranging from strong to conditional — at a key Senate hearing.

A draft environmental impact study for a proposed Washington wind and solar farm examines concerns about nesting areas for the region’s ferruginous hawks.

The non-utility owner of a Washington gas-fired power plant can receive free cap-and-trade allowances from the state, a government board decided.

A proposed massive solar farm is stirring controversy in southeastern Washington, pitting farmers and unions against local officials and the region’s GOP.