Skip to main content

Meet Rely

We exist to make Green Hydrogen Power-to-X a viable low-carbon option for industrial-scale applications, and our end-to-end commitment to the full project lifecycle and standardized approach means we guarantee performance, minimize risk, and provide optimal speed-to-market. 

Bridging the gap to decarbonized energy and green hydrogen derivatives at scale, Rely fuses a commitment to cutting edge product design with the experience and expertise of our parent companies. This empowers us to provide customizable Green Hydrogen facilities of 100MW and beyond.


What Makes Us Who We Are

We accept challenges

We relish the challenge of unlocking and upscaling green hydrogen Power-to-X, lowering the Levelized Cost of Hydrogen (LCoH), and making it safe and reliable to produce. We are entrepreneurial, dynamic, and always looking for the best bridge to better solutions, challenging ourselves and chasing down excellence.

We are grounded in reality

We build technological solutions that will change the way industries work. But our success is assured when we remain grounded in reality, guided by technology, engineering, and innovation. We know what is possible and we use this to make real forward progress. We co-create like consultants, but we execute like engineers – both competent and inspired.

We are empowered

We embrace creativity and innovation and use them as guiding principles in everything we do. We leverage the wisdom of our parent companies, Technip Energies and John Cockerill, to channel our creativity and build solutions which really work for our clients. At the same time, we are independent. We think and act differently. We are a community of specialists, each with unique expertise, who together form a positive force for change and development.

We promote partnerships


We know that partnerships are the catalyst for developing green hydrogen and its derivatives, and we only select projects that we believe in. Our clients choose to partner with us because of our preferential access to leading technology, project capacity and technical expertise. They trust us because of the strength and stability of our heritage and our commitment to the cutting edge. 

Pioneering a Sustainable Future: The Story Behind Rely

In November 2023, Technip Energies and John Cockerill, two industrial leaders in the hydrogen market, created Rely, a unique provider of integrated and competitive Green Hydrogen Power-to-X solutions. The partnership was formed with the common objective of driving acceleration in energy transition.

Technip Energies logo

Innovators in H2 engineering and large-scale energy project delivery

With a long history of leading the way in the design, engineering and build of H2 infrastructure – plus large-scale energy project experience spanning more than 60 years – Technip Energies has an important background with numerous project references in the fields of hydrogen, ammonia, electrolysis, fuels and power plants.


  • 30% Global market share in H2 production
  • ~€1bn of Energy Transition projects in 2022
  • 60+ years of best-in-class project delivery

More about Technip Energies

John Cockerill logo

Leaders in industrial-scale electrolysis technology and equipment manufacturing

Driven since 1817 by the entrepreneurial spirit and passion for innovation of its founder, the John Cockerill Group develops large-scale technological solutions to meet the needs of its time: preserving natural resources, contributing to greener mobility, producing responsibly, enhancing security and facilitating access to renewable energy.

  • Largest best-in-class pressurized alkaline electrolysers
  • 20% plus share of the electrolyzer market
  • 200+ years’ of manufacturing experience

More about John Cockerill

Arnaud Pieton

Achieving the world’s net zero targets requires significant investment to develop and scale decarbonization solutions. Global ambitions demand that affordable solutions and sustainable products for industries and consumers alike must be developed. Technip Energies is committed to meeting this challenge, and, together with John Cockerill, we are announcing the creation of Rely – a new integrated technology and solutions company for green hydrogen and power-to-X markets. Rely will bring together a unique combination of expertise, bridging green electrons to molecules.

Arnaud Pieton
CEO Technip Energies
François Michel, CEO John Cockerill

In order to play a large role in the energy transition, green hydrogen needs robust, scalable and competitive solutions that are optimized from end-to-end. Rely will provide exactly what countries, industries and markets need to decarbonize entire value chains through green hydrogen. I look forward to seeing its formidable development in the next few years. I am also thrilled by the acceleration in the development of John Cockerill’s network of electrolyzer gigafactories that Rely will allow, which will benefit all our customers across the world.

François Michel
CEO John Cockerill