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.

Geschäftsführer Stefan Höller von Verladekränen im Hafen von Wismar bei bei sonnigem Wetter mit blauem Himmel

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