Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Vestas Wind Systems is a Danish manufacturer, seller, installer, and servicer of wind turbines, currently the largest in the world with a 28% market share. The company operates manufacturing plants in Denmark, Germany, India, Italy, Britain, Spain, Sweden, Norway, Australia, China, and the United States, and employs more than 20,000 people globally. After a sales slump in 2005, Vestas recovered and was voted Top Green Company of 2006. In December, 2008, Vestas announced a major expansion of its North American headquarters in Portland, Oregon. In late 2008 the company also announced a manufacturing expansion in Colorado.