European energy company Vattenfall and Stadtwerke München (SWM) have signed an agreement to build an offshore wind farm 70km west of the island of Sylt.
The 80 turbines used on the DanTysk wind farm will stretch across a 70km2 area in water depths up to 30m.
SWM will take a 49 per cent stake in the wind farm, while Vattenfall will remain the majority owner.
The plans to construct and operate the wind farm are already well advanced, and negotiations with suppliers for turbines and other components are underway.
According to current plans, the first turbines would be commissioned in 2013.