Stiesdal Hydrogen and Danfoss sign commercial agreement on hydrogen electrolyzer production

Wednesday, April 3, 2024

The agreement signals the readiness of Stiesdal Hydrogen and Danfoss to introduce their latest innovation to the global market: an advanced hydrogen electrolyzer solution based on heat exchanger design.  

Together, the two companies have developed a new and scalable solution for the core component of Stiesdal Hydrogen’s electrolyzer, a so-called electrolysis cell stack.

By combining the two companies’ strengths, Danfoss and Stiesdal Hydrogen are positioning themselves to ramp up electrolyzer capacity in line with society’s growing need for green hydrogen.

Green hydrogen serves as a crucial bridge towards achieving complete decarbonization in sectors that are hard to power with renewable electricity, paving the way for clean fuel production for airplanes, ships, vehicles, and heavy industry.

Together, we have achieved a milestone in re-engineering one of the core components of alkaline electrolysis. The result is an electrolyzer that integrates well with renewable energy sources and allows for cost-efficient green hydrogen production. Looking ahead, we see green hydrogen production as a cornerstone in stabilizing and balancing the global energy supply,Head of Strategic Partnering, Bo Birkemose, Stiesdal, explains.

Boosting synergies with biogas production 

Leveraging Danfoss's expertise in customized plates and welding, the prototype was designed and tested, and now the first electrolyzer production versions are successfully operating at a combined biogas and PtX (Power-to-X) plant in Denmark. Here, green hydrogen is combined with surplus CO2 from biogas to deliver methane gas. 

Now, Stiesdal Hydrogen and Danfoss Heat Exchangers are ready to launch the electrolyzer to more markets and industries: 

I am truly impressed by the groundbreaking solution developed by Stiesdal Hydrogen. Our heat exchanger design, a core competency of Danfoss, fits right into Stiesdal’s needs for an energy-efficient electrolyzer. With our recent commercial agreement in place, we are ready to take hydrogen production and power-to-x to new heights as a key solution across hard-to-abate industry sectors, says Dennis Appel, Senior Vice President, Danfoss Heat Exchangers 

Stiesdal Hydrogen and Danfoss Heat Exchangers signed the agreement at Danfoss’ premises in Kolding, Denmark. 


Critical components for producing hydrogen through water electrolysis 

Green hydrogen is a promising, rapidly developing field of renewable energy and an important solution for hard-to-abate sectors. As the world seeks to transition away from fossil energy sources to reduce carbon emissions and mitigate climate change, hydrogen through water electrolysis using sustainable energy sources has emerged as a pivotal solution. 


Danfoss supports the green transition and hydrogen production with heat exchangers, power conversion from drives, high pressure pumps, and energy recovery devices. Overall, high pressure pumps for ultra-pure water are a critical component of green hydrogen generation, enabling the efficient and reliable production of this promising renewable energy source. 

For further information please contact: 

Trine Kiar, Communication Advisor, Danfoss Climate Solutions 

Kristian Strøbech, Head of Communications, Stiesdal +45 20460440


About Stiesdal Hydrogen A/S

Stiesdal Hydrogen is a subsidiary of Stiesdal, a fast-growing climate technology company headquartered in Copenhagen, Denmark, with additional locations in Give and Aarhus. Stiesdal is dedicated to creating high-impact solutions for climate change. The company operates three subsidiaries, each specializing in distinct areas of green technology. These areas include floating offshore wind, hydrogen electrolysis, and carbon capture and storage integrated with green fuel production.




About Danfoss A/S: 

Danfoss engineers solutions that increase machine productivity, reduce emissions, lower energy consumption, and enable electrification. Our solutions are used in such areas as refrigeration, air conditioning, heating, power conversion, motor control, industrial machinery, automotive, marine, and off- and on-highway equipment. We also provide solutions for renewable energy, such as solar and wind power, as well as district-energy infrastructure for cities. Our innovative engineering dates back to 1933. Danfoss is family- and foundation-owned, employing more than 42,000 people, serving customers in more than 100 countries through a global footprint of 100 factories.