Vestas Wind Systems designs, manufactures, installs and services wind turbines. It operates through the Power Solutions and Service segments. The Power Solutions segment comprises the sale of wind power plants and wind turbines. The Service segment includes the sale of service contracts, spare parts, and related activities. Affiliates include MHI Vestas Offshore Wind, a joint venture with Mitsubishi Heavy Industries. The company was founded in 1945 and is headquartered in Aarhus, Denmark.