The Kalundborg Symbiosis is an industrial ecosystem, located in Kalundborg on ‘Sjælland’ in Denmark about 1 hour drive from København. Here the residual product of one enterprise is used as a resource by another enterprise, in a closed cycle. See how it works here. This Symbiosis came into being as a result of private conversations between a few enterprise managers from the Kalundborg region in the ’60s and ’70s. Yes, it is that old! Since then, it has developed based on good collaboration between employees of the businesses involved and is now a local collaboration where public and private enterprises buy and sell residual products, resulting in mutual economic and environmental benefits.
Now Kalundborg Symbiosis is increasing the use of surplus energy with a new biogas plant to convert residual energy from Novo Nordisk and Novozymes to green biogas. The establishment of the plant starts in March 2017, and will begin production next spring. The plant will convert about 300,000 tons of biomass residuals per year and produce about 8 million m3 green biogas – which is equivalent to the consumption of 5,000 households. The green natural gas from symbiosis project will also displace natural gas equivalent to 17,000 tons of CO2 per year. Read more here.