Bigadan and Kanadevia Inova extend Danish collaboration

Bigadan, a leading contractor who delivers and operates several biogas projects and plants in Denmark, has awarded Kanadevia Inova two further biogas contracts – the construction of a carbon dioxide (CO₂) liquefaction plant in Kalundborg on the island of Zealand and a membrane biogas upgrading plant near Nysted on the island of Lolland.

The plants, which are scheduled to start their respective operations in April and January 2026, will contribute to achieving national decarbonization targets with the firm commitment and support of the Danish government.

Carbon dioxide liquefaction

The Kalundborg facility converts biogenic waste residues from the production of insulin and enzymes into approximately 28 million Nm³ of biogas per year, which is then upgraded to biomethane aka renewable natural gas (RNG).

Currently, the carbon dioxide (CO₂) contained in the biogas is separated from the methane, and released into the atmosphere.

However, Bigadan will liquefy the CO₂ instead and thus contribute to a reduction in national CO₂ emissions.

This will be our second CO₂ liquefaction plant. As experts in the biogas circular economy, we regularly upgrade our plants to the state-of-the-art to harness the possibilities available, said Ralf Karmann, Head of Projects at Bigadan, explaining the decision to expand these plants.

Large-scale dual CO₂ liquefaction plant

Bigadan has chosen Kanadevia Inova as a proven partner to build and supply the necessary plant technology.

To achieve a liquefaction rate of more than 4,000 kg/h, the plant has been designed around two coupled Model L systems, the largest in Kanadevia Inova’s LCO₂ series, each with a liquefaction capacity of 2,100 kg/h per system.

We’re delighted to have been granted these further contracts with our valued client Bigadan. It demonstrates Bigadan’s trust, not only in our technology but also in our development expertise and our proven track record in project delivery, said Dr Benoît Boulinguiez, Managing Director of Kanadevia Inova BioMethan in Zeven, the group’s site in northern Germany where the plants are being manufactured.

In contrast to other previous plug-and-play projects in containerized design, such as those already delivered in Germany and the UK, Kanadevia Inova is building the new liquefaction facilities into an existing onsite infrastructure at Kalundborg.

The project kicked off in January 2025, and the plant is scheduled to go into operation at the end of 2026.

Biogas upgrading in Nysted

Hot on the heels of the Kalundborg LCO₂ scheme is a second contract at the Nystedt project. This involves expanding an existing biogas plant to include a biogas upgrading system that will produce biomethane aka renewable natural gas (RNG) for injection into the regional gas supply grid.

Bigadan had already commissioned Kanadevia Inova just over a year ago with a membrane upgrading system for its biogas plant in Odense. The team at Kanadevia Inova BioMethan will also supply this technology to Nystedt in the southeast area of the island of Lolland.

This will provide around 100 GWh of biomethane, replacing natural gas usage in line with Denmark’s current decarbonization targets for 2030.

The facility, which features an M series L2000 upgrader, is a smaller version of the plant in Odense. The resulting synergies in preparation, contract drafting, and project planning have enabled the scheme’s development to be expedited.

Thanks to the standardization of these systems and advanced production, Kanadevia Inova can offer shorter delivery times, with the plant scheduled to start operations at the end of this year.

Successful partnership for a growth market

According to Kanadevia Inova, these latest orders confirm the success of the new sales strategy adopted by Kanadevia Inova for stronger market growth in Denmark, which involves closer cooperation with regaco a/s in Herlev.

regaco, an experienced Danish partner, provides support with project acquisition, and thanks to its multiple sites, can guarantee rapid 24/7 on-site service from qualified Danish-speaking system technicians.

The last few months have shown that this level of service and leading plant availability are the ideal solutions to meet the needs of our Danish customers, explained Dr Benoît Boulinguiez.

This is particularly advantageous for Kanadevia Inova’s customers when it comes to CO₂ liquefaction plants, as the systems supplied can generate useful gases at a quality suitable for use in the food and pharmaceutical industries.

Demand is growing in these industries and other sectors, for liquefaction technologies that can convert carbon dioxide from renewable sources, i.e. biogenic green CO₂ (bioCO₂), which replaces fossil-based gas currently used in industrial processes and food production.