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Milestone for Green Hydrogen: SOEC Pilot Plant Opens in Arnstadt

The pilot plant for the high-temperature electrolysis stack technology (SOEC) developed by Fraunhofer IKTS was opened at the “Erfurter Kreuz” in Arnstadt.

The pilot plant for the high-temperature electrolysis stack technology (SOEC) developed by Fraunhofer IKTS was opened at the “Erfurter Kreuz” in Arnstadt. Photo: Fraunhofer IKTS

On May 27, 2025, Fraunhofer IKTS and thyssenkrupp nucera inaugurated Germany’s first pilot production facility for SOEC (Solid Oxide Electrolysis Cell) stacks in Arnstadt. This high-temperature electrolysis technology enables highly efficient green hydrogen production—crucial for decarbonizing energy-intensive industries. With an annual capacity of 8 MW, the plant marks a key step from research to industrial-scale application. The opening ceremony welcomed prominent figures from politics, science, and industry, including Thuringia’s Minister-President Mario Voigt. This strategic partnership strengthens Germany’s hydrogen technology ecosystem and highlights Thuringia’s role as a hub for future-oriented innovation.

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