
Mr Borggrefe studied Business Engineering at the University of Karlsruhe and at the University of Massachusetts in Amherst, where he also has been awarded with a Master in industrial engineering and operation research.
Between 2005 and 2009 he has been Research Associate at the Institute of Energy Economics (EWI) in Cologne.
Since March 2009 Mr Borggrefe is Research Associate and PhD Candidate at the Chair of Prof. Bettzüge (Energy Economics) at the University of Cologne.