Ørsted A/S (formerly DONG Energy) is a power company based in Fredericia, Denmark. It is the largest energy company in Denmark. The company adopted its current name on 6 November 2017. The Danish state-owned company Dansk Naturgas A/S was founded in 1972 to manage gas and oil resources in the Danish sector of the North Sea. After some years, the company was renamed to Dansk Olie og Naturgas A/S (DONG), meaning Danish Oil and Natural Gas.