Gunnar Groebler is a businessperson who has been at the head of 7 different companies and is Chief Executive Officer of Salzgitter AG and Chairman-Management Board at Vattenfall Europe Windkraft GmbH. Mr. Groebler is also on the board of Aurubis AG, Salzgitter Mannesmann GmbH, Vattenfall Wind Power Ltd. and Semco Maritime A.

In the past Gunnar Groebler occupied the position of Chairman-Supervisory Board for Salzgitter Mannesmann Handel GmbH, Chairman for Peiner Träger GmbH, Chairman at Salzgitter Flachstahl GmbH, Chairman-Supervisory Board for Salzgitter Mannesmann Grobblech GmbH, Chairman-Supervisory Board of Ilsenburger Grobblech GmbH and Head-Business Area Wind at Vattenfall AB.