The Kompogas plant in Upplands-Bro, Sweden (source: Hitachi Zosen)
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Hitachi Zosen Inova AG (Switzerland) (HZI), a subsidiary of Hitachi Zosen Corp, announced March 8, 2019, that it has completed a biogas plant using its own "Kompogas" dry methane fermentation technology in Upplands-Bro, Sweden.

The Kompogas is a technology that keeps the temperature of organic waste such as food waste at about 55°C in an anaerobic condition and generates biogas by utilizing microorganisms. The processed residue is used as compost and fertilizer for agriculture and gardening.

The plant in Upplands-Bro is the first Kompogas plant in Scandinavia. Equipped with three fermentation tanks, it processes 83,000t of organic waste and generates 12,380,000Nm3 of biogas per year. HZI received an order for the plant from E.ON Biofor Sverige AB, a local power producer.

In addition, HZI started to construct a Kompogas plant in Jonkoping, Sweden, in March 2019. It will be the second Kompogas plant in Scandinavia. HZI entered the Swedish market as a methane fermentation business operator in April 2018, and the new plant will be a substitute for existing facilities.

The plant will be equipped with two fermentation tanks, process 40,000t of organic waste and generate 35GWh of biogas per year. Biogas generated at the plant will eventually be refined to high-purity methane gas and sold as transportation fuel (bio CNG). The plant is scheduled to start operations at the end of 2020.

In the aim of reducing greenhouse gas emissions, the government of Sweden has a goal of becoming the world's first country that does not use fossil fuel at all. Aiming at achieving "carbon neutrality" by 2045, it is making efforts to, for example, replace fossil-derived fuel with biofuel in the field of public transportation.