If you work alone, you add up. If you collaborate, you multiply. When people get together and exchange ideas, something new, something different arises. Making these novelties become reality requires courage and engagement. Our team unites people with the same target but different professional backgrounds.
Long-standing experience in physical and technological research and development meets fresh, innovative thought-provoking impulses and concepts. With competence and passion we work together to realise our idea - for an innovative future and a successful energy transition.
Dipl.-Ing. (FH)
stefan höller
+ CEO and CTO
+ Hydrogen pioneer since 1991
+ Degree (Dipl.-Ing. (FH) in physical engineering at the
University of Applied Sciences of Lübeck
+ 1997 foundation of H-TEC Hydrogen-Energy-
Systems GmbH, CEO and CTO
+ 2016 foundation of Hoeller Electrolyzer GmbH
+ More than 60 patents and patent applications in the
field of electrolysis and fuel cells are based on his
inventions
Lic.oec.HSG, MBA
Matthias Kramer
+ CEO and Chief Financial Officer
+ M.B.A., The University of Chicago Booth
School of Business, USA, and lic.oec.HSG,
University of St. Gallen, Switzerland
+ 20 years of experience in management
consulting and leadership positions with
Boston Consulting Group, Volkswagen
Consulting and KPMG
+ Involved with Jacobs University Bremen and
HSBA Hamburg School of Business
Administration to take private higher
education institutions further in Germany