Installation of a wind turbine at the He Dreiht Offshore Wind Farm. EnBW Energie Baden-Württemberg (EnBW) has completed the installation of all 64 wind turbines at the 960MW He Dreiht offshore wind farm in the German North Sea. In February this year, EnBW signed a 15-year PPA with Google to supply 100MW of clean electricity from the He Dreiht offshore wind farm.