Klaus-Dieter Maubach is a businessperson who founded Maubach Icp GmbH and who has been at the head of 12 different companies. Presently, Dr. Maubach occupies the position of Chairman-Supervisory Board of Uniper SE and Chairman-Supervisory Board at E.ON New Build & Technology GmbH.

He is also on the board of ABB AG, Fortum Oyj, E.ON Ruhrgas AG and Axpo Power AG.

In his past career he occupied the position of Chief Executive Officer at Encavis AG, Member-Management Board at E.ON SE Chairman-Supervisory Board for E.ON Vertrieb Deutschland GmbH, Chairman at E.ON France SAS, Chairman-Supervisory Board of E.ON Hanse AG, Chairman-Supervisory Board at PreussenElektra GmbH, Chairman of E.ON Benelux BV, Chairman at Elektrizitaetswerk Wesertal GmbH, Chairman-Management Board at Avacon AG, Chairman-Management Board at E.ON Energie AG, Member-Supervisory Board at E.ON Sverige AB and Member-Supervisory Board at E.ON Czech Holding AG (which are all subsidiaries of E.ON SE), Chairman-Supervisory Board of Klöpfer & Königer GmbH & Co. KG, Member-Supervisory Board at E.ON Energy Trading SE and Head-Technical Planning Department at Energieversorgung Offenbach AG.

He received a doctorate from Bergische Universität Wuppertal.