 From 1992-1997, he worked for the electricity supply company Energie Versorgung Schwaben AG (EVS), where he was involved in controlling, mergers and acquisitions and public-private partnerships.He received his doctorate in 1997, and from 1997 until 2002 he was the head of economic and employment promotion activities for Stuttgart.Since 2006, he has been giving lectures on energy policy at the Institute of Energy Economics and the Rational Use of Energy at the University of Stuttgart.