Vattenfall and Stadtwerke München (SWM) have initiated operations at the 288MW DanTysk offshore wind power plant in the German North Sea.
The Swedish power company Vattenfall owns 51% stake in the project with SWM retaining a 49% share.
Supply, installation and commissioning of 80 wind turbines at the facility have been done by German power equipment manufacturer Siemens.
Siemen’s turbines installed at the facility feature 120m rotor, and have a generation capacity of 3.6MW each.
The firm will also continue with preventive and corrective maintenance of the turbines under a five-year service agreement.
Construction of the offshore wind project started in February 2013 which is located 70km to the west of Sylt Island and the development involved more than €1bn investment.
SWM CEO Dr Florian Bieberbach said: "In terms of capital investment as well as installed capacity, DanTysk is our largest completed renewable energy project to date."
Majority owner Vattenfall was also in charge of the construction and operations of the power facility.
The project is likely to power more than 400,000 average households in Germany.
Siemens was also responsible for setting up the 864MW offshore grid connection SylWin1 for the DanTysk wind farm which was recently handed over to the transmission operator TenneT.
