The Industrial Symbiosis of Kalundborg is built as a network co-operation between six processing companies, one waste handling company and the Municipality of Kalundborg.
The philosophy behind the Symbiosis is that the six companies: Energy E2 Asnæs Power Station, the plasterboard factory BPB Gyproc A/S, the pharmaceutical plant Novo Nordisk A/S, the enzyme producer Novozymes A/S, the oil refinery Statoil A/S, Bioteknisk Jordrens Soilrem A/S as well as the waste company Noveren I/S and Kalundborg Municipality - exploit each other's residual or by-products on a commercial basis.

Source: The Kalundborg Centre for Industrial Symbiosis, Coordinator Jane Hansen, Casa Danica Center, Hareskovvej 19, DK-4400 Kalundborg, Denmark
Industrial Symbiosis Website