Containerised electrolyser side view

Our equipment design is highly flexible and can be tailored to specific requirements for operation in the chosen markets. CPH2’s hydrogen systems provide a viable, cost-effective, reliable and sustainable alternative to existing green hydrogen producing technologies:

  • 25-year lifespan

  • Lowest OPEX and LCOH of any water electrolysis hydrogen production

  • No membrane to degrade or fail

  • Cryogenic gas separation delivering pure hydrogen and medical grade oxygen

  • Quick to install and simple to maintain

  • Easily scalable due to the modular design


Membrane-Free Electrolyser Model MFE220 MFE440
Stack (cell voltage) efficiency [%] 73 to 78 73 to 78
Max. hydrogen production [kg/day] up to 451 up to 902
Max. oxygen production [kg/day] up to 3609 up to 7218
Hydrogen purity (at stated dew point) [%] up to 99.999 up to 99.999
Input power [kVA] 1000 2000
Control technology PLC PLC
System Dimensions 40ft ISO container 40ft ISO container
Membrane-Free Electrolyser Model
Stack (cell voltage) efficiency [%]
Max. hydrogen production [kg/day]
Max. oxygen production [kg/day]
Hydrogen purity (at stated dew point) [%]
Input power [kVA]
Control technology
System Dimensions
73 to 78
up to 451
up to 3609
up to 99.999
40ft ISO container
73 to 78
up to 902
up to 7218
up to 99.999
40ft ISO container

Our Markets

Decarbonisation of our energy systems (electricity and gas grids) is high on the worldwide agenda. Hydrogen will replace carbon-emitting coal and gas fired power plants. The production and storage of hydrogen will help to grid-balance when consumer demands dictates.

Large manufacturing plants are energy-intensive. Organisations can benefit from using hydrogen production technology, such as our Membrane-Free Electrolyser™. Using renewable electricity produced from solar or wind can produce green hydrogen to power equipment and machinery while reducing a business's carbon footprint.

Hydrogen means zero-emissions. Cars, buses, trucks, and trains can use hydrogen. Off-road vehicles and equipment such as forklift trucks, airport ground support equipment, agricultural machinery and generators can all be hydrogen fuelled for the future eliminating carbon and noise pollution.

Supermarkets, shops, data centres, offices, hospitals and many more buildings can become eco-friendly by powering their environments and back-up power systems with hydrogen.

With climate change delivering more and more unpredictable weather, our food chain becomes less stable. Too little rain, too much rain, long periods of frost and snow all ruin crops and produce less yield. Using hydrogen and oxygen for growing plants without soil can enhance the growth time and promote vegetation that is algae free.

About CPH2

Being passionate about hydrogen as clean energy for the future, we wanted to find an to PEM electrolysers as these had barriers to adoption. We realised that the cleanest way to produce hydrogen was by membrane-free water electrolysis, and in doing so, it would be a less expensive and more robust technology.

Dr. Nigel Williamson and Joe Scott established CPH2 (Ireland) in 2012 with the ambition to help clean up the environment for our children and future generations. Entering the green technology sector; a high growth and profitable market, they developed a Membrane-Free Electrolyser™ to produce hydrogen faster, more reliably, and more cost-effectively than other electrolysers.