Jun. 5, 2007 -- "The U.S. Department of Energy (DOE) released its first Annual Report on U.S. Wind Power Installation, Cost, and Performance Trends: 2006, which provides a detailed and comprehensive overview of development and trends in the U.S. wind power market. Most notably, the Report concludes that U.S. wind power capacity increased by 27 percent in 2006; and that the U.S. had the fastest growing wind power capacity in the world in 2005 and 2006. More than 61 percent of the U.S.'s total wind capacity - over 7,300 Megawatts (MW) - has been installed since President Bush took office in 2001. In 2006, for the second straight year, the U.S. led the world by installing 2,454 MW of wind power capacity, enough to power the homes in a city the size of Philadelphia. The U.S. produced roughly 16 percent of the worldwide wind market, followed by Germany, India, Spain, and China."

- From the U.S. Department of Energy