Accelerating the global energy transition with green hydrogen

Green Hydrogen Systems designs and manufactures efficient, standardised and modular electrolysers for the production of green hydrogen with renewable energy. 


Founded in Denmark

+ 10 years

R&D has led to advanced
electrolyser technology

75 MW

Yearly production capacity,
with scale-up plans in place

+ 21

Employees and

Launch of the next expansion phase

Launch of the next expansion...

Green Hydrogen Systems launches its next phase of production facilities expansion to 400 MW and acquires factory land and buildings.…
Pioneering project in Germany

Pioneering project in Germany

Green Hydrogen Systems electrolysers chosen for a pioneering green hydrogen production project in Germany Green Hydrogen Systems, a leading provider…
First day of trading on Nasdaq

First day of trading on...

Green Hydrogen Systems is now a publicly traded company It’s official! Green Hydrogen Systems is now a publicly traded company…

Electrolysis equipment
for every scale

HyProvide A-Series

Available in standardised, modular configurations for maximum efficiency, versatility and scalability, this next-generation technology makes the A-Series one of the most efficient alkaline electrolysers on the market. The unit is designed from the ground up to accommodate the input fluctuations that come with renewable energy sources. Its versatile design allows for application across many different market segments for green hydrogen production.

HyProvide X-series

The X-Series is based on the existing well-proven technology, optimised for use in the growing market for large-scale applications in, for example, industry, energy and heavy-duty transport sectors. Its unique multi-stack concept allows the electrolyser to reach higher voltages crucial to utilise mass-produced, low-cost and high-efficiency power electronics from wind and solar markets
operating in the
1000-1500V range.

#9 reasons to choose
our electrolysers

Mature Technology

Our products are built commercially proven pressurised alkaline technology

high Efficiency

One of the most efficient solutions on the market with competitive energy to hydrogen conversion


modular solutions that
are suited for rapid scale-up, clustered solutions and serial production

Dynamic operations

The electrolysers are designed to operate handle variable
loads suitable for renewable energy


High durability (10+ year stack durability) and system uptime

High output pressure

the 35 bar hydrogen output
pressure allows for a small
product footprint and lower
compression costs

Compact Design

Small footprint due to compact modular design increasing number of applications

Sustainable process

Production process indepenent from scarce and price-sensitive materials like iridium and platinum


 Its versatile design allows for application across many different market segments for green hydrogen production.

What customers say about us

''We could not be more pleased with the outcome of this project. The comparatively low cost of green hydrogen that GHS is able to deliver has opened the door to significant environmental benefits for our community.''
Christian Twitchett
Department of Public Transportation and Mobility in Denmark’s North Jutland region
''Green Hydrogen System’s electrolysers and on-site production approach have enabled us to start meeting our customers’ demand for solar-produced hydrogen''
Hans-Olof Nilsson
Nilsson Energy, Sweden

Our electrolysers in action
selected cases

Siemens site Green Hydrogen Systems Brande
Case story
Installation with Siemens Gamesa Wind turbine in an island mode

Who do we serve



Refueling Stations


At Green Hydrogen Systems, my colleagues and I are convinced that green hydrogen will be at the heart of the future energy systems – and we are committed to be on the forefront of this energy transition.

Sebastian Koks Andreassen
CEO, Green Hydrogen Systems