Wärtsilä Gas Solutions, a division of technology group Wärtsilä, has been contracted to supply and install bioLNG production solutions for two large-scale biogas projects in Finland. The projects have been commissioned by Suomen Lantakaasu Oy, a joint venture between biomethane company St1 Biokraft and dairy and food company Valio. Each facility will have the capacity to produce 25 tonnes of bioLNG per day. The orders were confirmed in the first quarter of 2025.
The biogas will be derived primarily from manure and food processing waste, with the residual by-product serving as an odour-free biofertiliser for farmers supplying the manure. Once operational, the plants will facilitate greater use of biogas-powered transport. The integration of manure into biogas production is expected to significantly reduce the carbon footprint of milk production by lowering emissions in both agriculture and transportation.

Leena Helminen, CEO of Suomen Lantakaasu, highlighted the importance of the collaboration: “Suomen Lantakaasu has strong ambitions in building a biogas production network in Finland and enabling wider use of biogas fuel in transport applications. Wärtsilä’s deep experience and successful track record for high-capacity biogas upgrading and liquefaction plants is highly valuable to our projects.”
The greenfield plants will be constructed in Nurmo and Kiuruvesi, located in western and central Finland, respectively. Both facilities are expected to commence operations in the second half of 2026.
Magnus Folkelid, sales manager at Wärtsilä Gas Solutions, Biogas, emphasised the company’s commitment to sustainability: “Wärtsilä’s focus is very much on shaping decarbonisation. Our bioLNG plants are a central pillar of this strategy. These biogas upgrading and liquefaction plants will have the capacity to produce significant levels of green fuel and thus support Suomen Lantakaasu in their journey.”
Beyond the biogas upgrading and liquefaction plants, Wärtsilä will also provide 300m³ capacity storage tanks and an export station. Previously, the company has supplied biogas upgrading and liquefaction solutions to St1 Biokraft in Sweden and Norway.
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