Sunfire
Updated: December 24, 2025
Founders: Nils Aldag, Carl Berninghausen, Christian Olshausen
Country: Germany | Funding: €918M (+)
Founded: 2010
Website: https://www.sunfire.de
SunFire manufactures solid oxide electrolysis cells (SOECs) that produce clean hydrogen using high-temperature electrolysis. These electrolyzers split steam into hydrogen and oxygen at temperatures of approximately 800°C, using electricity and heat to achieve electrical efficiency 25-30% higher than alkaline or PEM electrolyzers. They reduce energy consumption by utilizing waste industrial heat, reducing the levelized cost of hydrogen for large-scale production. Sunfire systems are used in industrial projects, such as the world's largest multi-megawatt solid oxide electrolysis complex at the Neste refinery.
Founded: 2010
Website: https://www.sunfire.de
SunFire manufactures solid oxide electrolysis cells (SOECs) that produce clean hydrogen using high-temperature electrolysis. These electrolyzers split steam into hydrogen and oxygen at temperatures of approximately 800°C, using electricity and heat to achieve electrical efficiency 25-30% higher than alkaline or PEM electrolyzers. They reduce energy consumption by utilizing waste industrial heat, reducing the levelized cost of hydrogen for large-scale production. Sunfire systems are used in industrial projects, such as the world's largest multi-megawatt solid oxide electrolysis complex at the Neste refinery.
