Green energy
is simply our thing
More than 30 years of experience
in hydrogen technology
Over 30 years, Stefan Höller and his team and partners have been developing innovative hydrogen technology and are among the pioneers in the development and manufacture of PEM electrolysis stacks (PEM = polymer electrolyte membrane). Our PEM electrolysis cells, which are connected in series in so-called stacks, use renewable energy to split water into green hydrogen and oxygen – the basis for the decarbonization of industry.
We believe that the best results are achieved when different people pursue a common goal. Our team combines in-depth experience in technical research and development with innovative thinking. This is how we put our ideas into practice – for a successful and innovative future that makes our world more sustainable.
DIPL.-ING. (FH)
STEFAN HÖLLER
– CEO and CTO
– Over 60 patents and patent applications in the fields of electrolysis and fuel cells are based on his inventions
– Founded hyworx GmbH in 2024
– Founded Hoeller Electrolyzer GmbH in 2016
– Founded H-TEC Wasserstoff-Energie-Systeme GmbH in 1997
– Hydrogen pioneer since 1991
– Studied physical engineering at Lübeck University of Applied Sciences