2016 Associate of RENAC International
2006 – 2016 Head of the department „Climate and Energy" Federal Environment Agency
1989 – 2005 Head of the unit „climate, air quality and local agenda 21" Ministry of urban planning of the city of Berlin;
1986/87 Scientist, Öko-Institut Freiburg;
1981 – 1988 Assistant-professor of electrical engineering , University Hamburg;
1975 – 1981 Teacher at technical colleges in Lower Saxony and Hamburg;
Study Electrical Engineering and Social Sciences, University Hannover
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