Twenty of the total 54 wind turbines have been installed at the Nordsee One offshore wind farm.
This is according to the latest press release from Galloper Wind Farm Limited, a joint venture led by innogy SE, who also owns Nordsee One together with Northland Power.
The first Senvion 6.2M-126 turbine at the 332MW offshore wind farm in the German North Sea was installed in early March.
The wind farm is expected to be commissioned by the end of 2017.
Once commissioned, the wind farm is expected to produce an annual output of more than 1,300 gigawatt-hours of electrical energy, enough to supply the equivalent of some 400,000 German households.