John Cockerill Hydrogen

Leading the Energy Transition

A pioneer in green hydrogen

Answering today’s ecological urgency and the need to reduce CO2 emissions, John Cockerill brings you a promising sector that could help decarbonise transport and industry: hydrogen. In this pioneering industry, we have already manufactured electrolysers and storage solutions for nearly 1,000 customers in different industries. Today, John Cockerill Hydrogen offers the most powerful electrolysers on the market, capable of producing up to 1000Nm³ per hour (equivalent to 5 megawatts (MW).

Latest news & blog posts

John Cockerill's 5MW pressurized alkaline electrolyser for green hydrogen production
Blog

How to Evaluate Electrolyzer Flexibility: A 2026 Update on System-Level Performance

November 05th 2026
John Cockerill's 5MW pressurized alkaline electrolyser for green hydrogen production
Blog

Alkaline or PEM electrolyzers: Which should you choose?

September 09th 2026
Press release

John Cockerill unveils its first electrolyzer stack manufactured and assembled in France and begins production of equipment for a new green hydrogen project in Europe

July 13th 2026

Upcoming events

Jan 19
France
Group

Hyvolution

May 18
The Netherlands
Group

World Hydrogen Summit

Our vision

Our entrepreneurial spirit and our desire to move the world forward are part of John Cockerill’s DNA. We aim to provide solutions that are more reliable, respectful of the environment, and higher performing.

80 5 MW single stack electrolysers delivered between 2018 and 2022
10 T of hydrogen produced by our equipment every hour
+ 30 more than 30 countries of reference