Market-leading efficiency,
European made
Our patented technology combines knowledge from the fuel cell industry with electrolyser technology, to make a solution that is more efficient – and safer – than conventional electrolysers.
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At the core of Hystar’s technology is a patented PEM electrolyser design that uses ultra-thin membranes to reduce electrical resistance through the cell.
Lower resistance means more efficient conversion of electricity into hydrogen, enabling higher hydrogen output per unit of energy input compared to conventional PEM systems.
This efficiency improvement directly supports lower cost of hydrogen production over time.
Safety is integrated into the core design of Hystar electrolysers.
Advanced cell architecture and gas management systems are engineered to minimise hydrogen crossover between electrodes, supporting safe and stable operation across a wide range of operating conditions.
Safety, efficiency, and performance are treated as interconnected design principles rather than separate layers.
Hystar electrolysers are engineered for a complete operating range from 0 to 100% load.
This enables:
This level of operational flexibility is critical for modern energy systems where power supply is increasingly variable.
Hystar’s technology is designed to address key challenges in green hydrogen production:
Together, these capabilities make large-scale green hydrogen production more technically and economically viable.
Hystar improves efficiency by using patented PEM membranes that are significantly thinner than conventional PEM systems, to reduce electrical resistance within the electrolyser cell.
The PEM membranes are the material separating the anode and cathode in electrolysers which is where the chemical splitting of water occurs. The thickness of this membrane will, to a large extent, determine an electrolyser’s efficiency, with thicker ones increasing ohmic resistance and making systems less efficient.
Lower resistance means that more of the electrical energy input is converted into hydrogen production, improving overall system efficiency compared to conventional PEM designs.
Efficiency directly impacts the cost of producing hydrogen.
Higher efficiency means less electricity is required to produce each kilogram of hydrogen, which is one of the main cost drivers in green hydrogen production.
Improving electrolyser efficiency is therefore critical for making green hydrogen economically competitive at scale.
A 0–100% operating range means that Hystar electrolysers can operate continuously and stably across the full spectrum from no load to full production capacity.
This enables:
This level of operational flexibility is critical for modern energy systems where power supply is increasingly variable.
Renewable energy sources such as wind and solar are variable by nature.
Electrolysers with high operational flexibility can adjust hydrogen production in real time, allowing them to use renewable electricity more efficiently and support grid balancing.
This makes hydrogen production more compatible with renewable-heavy energy systems.
Hystar enables scalable hydrogen production through a modular product architecture that spans from stack-level components to large-scale plant systems.
The product portfolio is structured to support different project sizes and scaling needs:
This layered approach allows hydrogen projects to scale from individual stacks to full industrial production facilities, while enabling consistent quality and efficient scale-up of production capacity to meet global demand for green hydrogen infrastructure.
Safety is embedded in the electrolyser design through advanced cell architecture and gas management systems. Hystar’s technology allows for both safer operation at stack level and system level, compared to conventional technology.
These systems are engineered to minimise hydrogen crossover between electrodes and ensure stable, controlled operation across a wide range of conditions.
Hydrogen crossover refers to the unintended movement of hydrogen through the membrane to the oxygen side of the electrolyser cell.
Reducing crossover is important for maintaining:
Hystar’s technology is designed to minimise crossover through its cell design and membrane structure.
Hystar’s technology is designed for industries that require large-scale hydrogen production to support decarbonisation efforts, such as:
Yes. Hystar electrolysers are designed for high responsiveness and flexible operation, making them well suited for variable renewable energy sources such as wind and solar.