How it Works

PEM electrolyser technology quickly and reliably produces clean, green energy

Hydrogen as an energy source is becoming increasingly important as the world looks to decarbonise. We are invested in producing and harnessing green hydrogen, the cleanest kind possible, through our innovative PEM electrolyser technology.

Our PEM electrolyser systems are the perfect partner for renewable energy sources.

Our proton exchange membrane (PEM) electrolysers use only renewable electricity and water to create green hydrogen through a process called electrolysis. The hydrogen produced can be stored as a gas or liquid and can be released into the gas grid, be used as clean vehicle fuel, or in a host of industrial processes, significantly reducing emissions in logistics and heavy industry. PEM electrolysers can rapidly react to fluctuations typical of renewable power generation, making the technology ideally suited for grid balancing and meeting energy deficits.

ITM Power’s PEM Tech

Provides leading performance longevity and self-pressurisation.

Rapid Response

Rapid reaction enables participation in primary and secondary balancing markets

Full Integration

Means that all necessary sub-systems are included as standard

Modular Structure

Allows flexibility of sizing using well proven technology and design

Dynamic Stack Clamping

Allows variable operation and rapid stack exchange in the field

Hydrogen Generated

Is a purity suitable for fuel cell electric vehicles

Flexible Control System

With remote control and condition monitoring features

Expert Team

From design, delivery, and after sales support

Our PEM electrolysers are market leading

Fully integrated, autonomous and CE marked.

Explore PEM Electrolysers further


We continue to deploy our technology and products across multiple markets and industries. See how we are helping the world decarbonise.



How It Works

The ITM Power Story:
A road to net-zero

Discover the role of the PEM Electrolyser in decarbonising transport and industry and reaching net-zero.