According to the Energy Department, wind could supply 20 percent of America's electricity needs by 2030, enough to reduce reliance on natural gas by 50 percent and cut coal consumption by 18 percent. It would cost about $197 billion but be offset by $155 billion in fuel savings, not to mention various positive environmental externalities. In other words, it's one of many things we could simply do if we're indeed serious abut this global warming stuff.
