When fully operable the plant will treat 50,000 tons of food waste a year to produce around 14,000 Nm3 (normal cubic meters) per day of biomethane. The liquefied biogas (LBG) can be efficiently transported for use as fuel. Wärtsilä’s liquefaction design uses conventional components in a mixed refrigeration process and the technology is scalable upwards to a capacity of at least 60 tons per day.
“This plant will mean that 135 Oslo region buses will be able to run on biogas. As a result, CO2 emissions will be reduced by some 10,000 tons a year and particle emissions will also be significantly lowered. The air will be cleaner and noise levels will be reduced, and these are benefits that everyone in the region will enjoy,” noted Jannicke Gerner Bjerkås, Communications Director and CSR, Waste-to-Energy Agency.
Moreover, Tore Lunde, Managing Director, Wärtsilä Oil & Gas Systems, commented: “We are proud to be involved in this groundbreaking project to produce a new, renewable, and environmentally sustainable transportation fuel. There is huge potential for the use of LBG from renewable energy sources as fuel for trucks and buses, and this project is an important step forward in developing this market.”