The Guardian | Ineos buys Dong Energy's oil and gas business The Guardian Ineos buys Dong Energy's oil and gas business. Anglo-Swiss chemicals firm hails £1bn acquisition as 'very logical' as Danish firm makes progress in switch to renewables. Dong Energy's Burbo Bank Extension windfarm, off Liverpool Bay. Dong has ... Ineos to buy Dong Energy's oil and gas arm in £1bn deal Dong Energy sells oil and gas business to Ineos - Financial Times Dong Energy sells oil and gas unit for up to $1.3B |