Large-scale industrial plants and services for energy, industry, environment and defense
John Cockerill Group
Seraing (BE) · Aspach (FR) · Commercy (FR) · Evry (FR) · Versailles (FR) · Langfang (CN) · Belo Horizonte (BR) · Salem, Ohio (US) · Nairobi (KE)New on Amplifa
About John Cockerill
Headquartered in Seraing (Belgium), the John Cockerill Group develops and manufactures large-scale plants and components for the energy sector, industry, environmental technology and defense. The portfolio includes alkaline and PEM electrolysers for green hydrogen, waste heat boilers and cooling systems, recovery boilers for the paper industry, solar thermal power plant solutions, industrial hydrogen and wastewater treatment, defense systems, as well as maintenance and services for steelworks and nuclear power plants. Founded historically as a mechanical engineering company, the group has been privately owned and independent of the steel industry since 2002 and has expanded internationally through acquisitions. In 2025, the group recorded an order intake of over €2 billion and revenue of €1.6 billion. The group comprises more than 20 sites in Europe, Asia, America, Africa and New Caledonia.
- Site
- B-4102 Seraing
- Processes
- Maintenance and services for industrial plants, Engineering, Hydrogen/electrolysers (alkaline and PEM), Environmental technology (industrial wastewater, emission reduction), Defense systems and services, Solar thermal, Cooling systems and waste heat boilers, Data center cooling
- Materials
- Engineering, Maintenance & Services
- Founded
- 1817
- Industries
- Hydrogen, Steel industry, Energy supply, Nuclear power, Environmental technology, Defense
- 01
Engineering and Design
- 02
Plant Manufacturing
- 03
Installation and Commissioning
- 04
Maintenance and Services
- 05
Renovation and Retrofits
Technologies and Processes
Engineering
Design and process engineering of complete industrial plants
Maintenance & Services
Maintenance of industrial plants, including the nuclear power plants of France and Belgium
Sites
Seraing
BEGroup headquarters (Château John Cockerill)
Aspach
FRElectrolyser gigafactory (construction from 2021)
Commercy
FRCockerill Campus (training center)
Langfang
CNCockerill Tempro Surface Treatment Technologies
Salem, Ohio
USCMI Environment America
Products
Inside the production
Industries
Additional services
Reference customers
History
- 1817
John Cockerill purchases the Château of Seraing
- 1835
Construction of the first steam locomotive on the European continent (Le Belge)
- 1842
Foundation of the first public limited company: Etablissements John Cockerill
- 1982
The Mechanical Engineering Division is renamed Cockerill Mechanical Industries (CMI)
- 2002
Bernard Serin acquires CMI; definitive exit from the steel industry
- 2004
CMI becomes Cockerill Maintenance & Ingénierie; expansion into the USA and Germany
- 2014
CMI Defence becomes the industry leader in land defense
- 2018
Jean-Luc Maurange becomes CEO; inauguration of MiRIS
- 2019
CMI becomes John Cockerill again; commissioning of the Sole solar thermal power plant Haixi (China)
- 2021
Construction begins on the European electrolyser gigafactory in Aspach (France)
- 2025
Record order intake of over €2 billion, revenue of €1.6 billion, acquisition of McPhy assets, contract for 7,000 logistics vehicles for the French Army