
Wärtsilä Puregas CA80 For Denmark RNG Project
The Upgraded Biogas Will Meet Danish National Gas Grid Standards And Be Injected Into The National Gas Grid

Wärtsilä Gas Solutions, a part of technology group Wärtsilä, has been contracted to supply a biogas upgrading system to Danish bioenergy provider Maabjerg Biogas, a subsidiary of Skovgaard Energy. The plant will have the capacity to upgrade 6000 Normal m3 per Hour (Nm3/h) of raw biogas, thereby significantly scaling up Denmark’s production and utilization of biogas. The order with Wärtsilä was booked in Q1, 2025.
According to Wärtsilä, the plant’s large upgrading capacity is crucial to enhancing the efficiency and utilization of biogas as a viable renewable energy source. It will play an important role in Denmark’s ongoing development of a holistic energy strategy, integrating various renewable energy sources, such as wind, solar, and biomass.
“Wärtsilä Gas Solutions has a proven and impressive track record in designing and implementing biogas upgrading systems. We consider their experience and expertise to be essential to this project, which highlights once again the latest advancements in renewable energy technology, and our commitment to the green transition,” said Claus Lindholt Mikkelsen, chief executive officer of Maabjerg Biogas.
The plant will operate with Wärtsilä’s Puregas CA80 upgrading technology, capable of recovering over 99.9% of the biomethane present in raw biogas by separating carbon dioxide from the biogas through chemical adsorption. Wärtsilä will further support the installation with a five-year service agreement.
“This project showcases the potential of biogas as a sustainable energy solution and the importance of long-term collaboration between stakeholders in defining the solutions needed for a renewable energy future. It also marks a pivotal advancement in the integration of renewable energy sources in Denmark, reinforcing their commitment to a sustainable energy framework,” said Goran Gajski, sales manager, Wärtsilä Gas Solutions, biogas.
The plant is expected to be fully operational in Q1, 2026. It will be located in the Maabjerg Energy Center in Maabjerg, West Jutland, Denmark. The upgraded biogas will meet Danish national gas grid standards and be injected into the national gas grid.