First biogenic CO2 delivered from Tønder Biogas to Kassø Power-to-X facility
Ammongas has delivering its first truckload of biogenic CO₂ from Tønder Biogas. The CO₂ will be used for European Energy’s Power-to-X facility in Kassø, where it will play a key role in the production of e-methanol
© Ammongas
Ammongas, is developing carbon capture (CCU and CCS) technology in southern Denmark via a new CO₂ liquefaction facility at Tønder Biogas - one of the largest biogas plants in Europe. This facility, which is now commissioned, will capture, purify, and liquefy biogenic CO₂. The Kassø facility has the capacity to produce 48,000 tonnes of liquefied CO₂ annually for European Energy’s renewable energy projects.
The liquefaction unit has been engineered, constructed, and commissioned by Ammongas, a subsidiary of European Energy specialising in CO₂ liquefaction. Ammongas’ technology pre-conditions and polishes raw CO₂ before compression, dehydration, and condensation, ensuring a purity level exceeding 99%. This high-purity CO₂ is highly versatile and suitable for sequestration, food-grade applications, or green fuel production.
“The first delivery of biogenic CO₂ from Tønder Biogas to our Kassø facility is a major step towards scaling green fuel production in Denmark. By integrating carbon capture with Power-to-X, we are closing the carbon loop and paving the way for a more sustainable energy future,” says Jaime Casasus-Bribian, CEO of Ammongas.
A significant portion of the captured CO₂ will be delivered to European Energy’s Kassø e-methanol facility, where it will be a crucial component in producing e-methanol—a sustainable fuel and chemical essential for decarbonising industry and transportation. By capturing and repurposing biogenic CO₂, the project supports emissions reduction and promotes circularity in renewable energy production. In addition, it serves as a prime example of Carbon Capture and Utilisation (CCU).
Located in southern Denmark, the Tønder Biogas facility incorporates advanced CO₂ compression, dehydration, condensation, and liquefaction technology to ensure the captured CO₂ meets the highest industry standards. The liquefied CO₂ will serve as a critical feedstock for the production of green fuels and chemicals at the Kassø e-methanol plant, supporting the broader transition towards renewable energy solutions.
Source: Ammongas A/S, press release, 2025-03-17.