E.ON and Statoil have started construction work on the €1.2bn Arkona offshore wind project in the Baltic Sea.
The project, located 35km northeast of the German island of Rügen, will have an installed capacity of 385MW and will supply enough power for 400,000 households.
The wind farm will feature 60 6MW-class turbines manufactured by Siemens and is expected to save up to 1.2M t of carbon emissions annually.
E.ON Germany CEO Ingo Luge said: "As the mainstay of future energy supply, renewables must be able to stand on their own economically going forward.
"Electricity generation from offshore wind farms has already experienced a considerable learning curve and will soon be able to do just that. Through its high levels of investment, E.ON has made an important contribution toward this end."
The Arkona wind farm is scheduled to be fully operational in 2019.
* Data provided by Timetric's Construction Intelligence Center.