A wind farm stand on a bluff above Wallula, Wash., near the Columbia River in this May 19, 2010 photo. Southern Washington's Windy Flat and Wallula bluffs have huge concentrations of wind turbines that have created giant wind farms.
A wind farm stand on a bluff above Wallula, Wash., near the Columbia River in this May 19, 2010 photo. Southern Washington's Windy Flat and Wallula bluffs have huge concentrations of wind turbines that have created giant wind farms. MCT
A wind farm stand on a bluff above Wallula, Wash., near the Columbia River in this May 19, 2010 photo. Southern Washington's Windy Flat and Wallula bluffs have huge concentrations of wind turbines that have created giant wind farms. MCT