• Topsoe inaugurates its first – and Europe’s largest – solid oxide electrolyzer cell (SOEC) manufacturing facility located in Herning, Denmark.
• The facility will manufacture high-efficiency electrolysis stacks for industrial-scale green hydrogen production. The annual capacity is 500 MW with the option to scale further.
• The facility is Topsoe’s single biggest investment to date and is supported by €94 MM from the EU Innovation Fund.
• By scaling advanced, high-efficiency electrolyzer technology, Topsoe contributes to decarbonizing energy-intensive industries that account for approximately 30% of global CO₂ emissions (WEF).

Topsoe, a leading global provider of advanced technology and solutions for the energy transition, has inaugurated its first – and Europe’s largest – solid oxide electrolyzer cell (SOEC) stack manufacturing facility in Denmark. The electrolyzer stacks will be used to produce green hydrogen, which can be converted into ammonia and methanol essential for industrial decarbonization.

The factory is initially designed to manufacture 500 MW of electrolyzers per year. When fully loaded, after 10 yrs, the factory can service up to 10 GW of installed capacity at customer sites, enabling the reduction of 15 metric MMtpy of CO₂, compared to hydrogen produced from natural gas. This is equivalent to the annual emissions of nearly 3.5 MM gasoline-powered passenger vehicles.

By scaling advanced, high-efficiency electrolyzer technology, Topsoe contributes to enhancing Europe’s energy competitiveness in cleantech, while supporting both European and global efforts to decarbonize energy-intensive industries such as steel, cement, chemicals and long-distance transportation that account for approximately 30% of global CO₂ emissions (WEF).

Morten Bødskov, the Danish Minister for Industry, Business and Financial Affairs, said: “This is a big day for Topsoe, for Herning and for Denmark. Topsoe turns knowledge into action and complex chemistry into real change – and their technologies make industries cleaner. Investments like this show what’s possible. They create jobs, growth and a greener future. This new factory is an example of what we need – Danish and European investments in green technology.”

Roeland Baan, Chief Executive Officer at Topsoe, said: "Our SOEC facility will be a game-changer for the energy transition. The technology’s unmatched efficiency is pivotal for scaling green hydrogen production for industrial decarbonization. With this facility, we are moving SOEC technology and Power-to-X from ambition to reality – at a scale and speed that’s urgently needed. This achievement is a testament to Topsoe’s world-class innovation, determination and ability to transform advanced, science-based solutions into industrial impact.”

Topsoe has signed offtake agreements with First Ammonia for its green ammonia project in Texas, U.S., and with Forestal for its e-methanol project in Spain. Both agreements include a 10-yr service warranty program.

The inauguration was attended by Morten Bødskov, Danish Minister for Industry, Business and Financial Affairs and state representatives. Also, customers, business partners and organizations such as European Innovation Fund, CINEA, Hydrogen Council, Confederation of Danish Industry, Hydrogen Denmark and Green Power Denmark attended the ceremony in Herning, Denmark. Wopke Hoekstra, European Commissioner for Climate, Net Zero and Clean Growth, and Dan Jørgensen, European Commissioner for Energy and Housing, delivered video addresses during the ceremony.