The IPO on the Nasdaq exchange in Copenhagen could value Dong at around DKr80bn ($12.2bn), analysts said.

The proceeds from the IPO will help underpin an expansion of Dong's market-leading offshore wind development business, which already has its sights set on growth outside its European heartland.

CEO Henrik Poulsen said: “Over the past decade, Dong Energy has established a world-leading position in offshore wind, which accounted for 75% of our capital employed at the end of 2015.

“We