He is expected to take up office at the Danish wind turbine giant around the beginning of August.
Andresen was CFO at Swedish utility Vattenfall from 2008 until last year. He has previously worked at Nordea, Den Norske Bank, the Nordic Investment Bank and Norwegian industrial group Kvaerner.
Vestas chairman Bert Nordberg says: "With Dag Andresen at the table Vestas will be provided with one of the absolutely best forces within this area.
