** FILE ** Wind turbines spin under wind swept, cloudy skies along a ridge line in the Columbia River Gorge at FPL Energy's Stateline Wind Project on the Oregon-Washington border near Touchet, Wash., March 6, 2003. Wind energy will play a growing role in meeting the rising power needs of the Northwest, but it isn't controllable and it needs total backup by traditional sources such as hydroelectric dams, according to a report released Wednesday, March 21, 2007, by energy specialists. (AP Photo/ File)