Hans-Dieter Kettwig has been managing director of German turbine maker Enercon since 1997. For the past three years, he has also been chairman of the board of management of the Aloys Wobben Trust, which controls Enercon.

Kettwig, 57, was born in Emden, northwest Germany, and has an MBA from the Emden University of Applied Sciences. In early 1988, he joined Enercon, where he was put in charge of all commercial matters.

A lot of turbine makers are scrambling to build 7MW-plus turbines, but only for offshore, yet Enercon is building them only onshore [it has a 7.5MW