Mandalay Bay Convention Center, Las Vegas. Windpower is the annual conference and exhibition for the U.S. wind industry. It’s the nexus of wind energy professionals who converge to generate actionable ideas for expanding the wind energy economy through technology and collaboration. In 2014, Windpower comes to Las Vegas as a place for business. American wind power topped 4 percent of the U.S. power grid for the first time last year and has delivered 30 percent of all new generating capacity for the last five years. In Iowa and South Dakota, wind power now exceeds 25 percent of total electricity production. In nine states it provided more than 12 percent and in 17 states, more than five percent. “Wind energy continues to make inroads as a major contributor to the U.S. power mix,” said Elizabeth Salerno, vice president of industry data and analysis for the American Wind Energy Association. “The electricity generated by American wind power has more than tripled since 2008 not only due to significant growth in new wind projects but also technology innovation leading to more productive wind turbines.” All renewable energy sources now deliver nearly 13 percent of the nation’s electricity.