[Excerpt] This report discusses the U.S. wind turbine manufacturing industry, its supply chain, employment and international trade trends, major federal policy efforts aimed at supporting the industry, and issues affecting its future. The wind industry’s national trade group, the American Wind Energy Association (AWEA), reported that an estimated 20,000 Americans were employed directly and indirectly in wind turbine manufacturing in 2010, compared to 2,500 in 2004. Another 55,000 U.S. workers reportedly were employed in other parts of the wind industry in 2010, including construction and services. The U.S. wind turbine market has grown in size from an estimated $2.7 billion in 2005 to $12.5 billion in 2009. Following an unprecedented period of growth in the U.S. wind power market between 2005 and 2009, about half as many new wind turbines were installed in 2010 (some 3,000) as in 2009.