The main participating companies were a coal-fired power plant (Asntesvajrket), a refinery (Statoil), a pharmaceutical and industrial enzyme plant (Novo Nordisk and Novozymes), a plasterboard factory (Gyproc), a soil remediation company (AS Bioteknisk Jordrens), and the municipality of Kalundborg through the town’s heating facility. This also enabled Statoil to stop flaring this gas. For instance, surplus heat from the power plant is used to heat about 4 500 private homes and water for fish fanning, and fly ash is supplied for cement production. Process sludge from fish fanning is supplied to nearby fanns as fertiliser.