Horizon Wind Energy develops, constructs, owns and operates wind farms throughout the United States. The wind farms developed by the company operate in New York, Iowa, Pennsylvania, Washington and Oklahoma, and it has projects under construction in Minnesota, Oregon, Texas and Illinois. Horizon Wind Energy, was acquired by Goldman Sachs in 2005 that is a global investment banking, securities and investment management firm. It provides a wide range of services to several clients, including corporations, financial institutions, governments and individuals. The company is working on several developing and building wind power projects, including Twin Groves Wind Farm, Lone Star Wind Farm, Elkhorn Valley Wind Farm and Prairie Star Wind Farm.