Novozymes, Novo Nordisk, Bigadan and DONG Energy have signed an agreement, which will mean that biomass from the production site in Kalundborg will be used to produce green energy.

Providing a good example of a circular economy, a new biogas plant will convert residual products from Novozymes’ and Novo Nordisk’s factories in Kalundborg to bio natural gas.

Today, the biomass is already in use as a fertilizer on the fields of Zealand in Denmark:

“Our residual products will now also be used to make biogas. The agreement doubles up on recycling Novozymes’ residual products and is also a win for the environment. It’s important for us to reduce the environmental impact of our production,” says Jesper Haugaard, head of production for Novozymes in Europe.

Novo Nordisk and Novozymes in Kalundborg are major producers of insulin and enzymes sold on a worldwide basis. Novozymes owns and operates the plant that manages the residual biomass for both Novozymes and Novo Nordisk.

The production of enzymes and insulin are based on the process of fermentation, similar to the beer-brewing process.

This provides opportunities for recycling the residual biomass. The new biogas plant will convert the residual products into biogas, which is then upgraded to bio natural gas. After being processed at the biogas plant, the biomass will continue to be used as fertilizer on fields, as it has been for many years.

Green energy
Bigadan and DONG Energy will construct and own the biogas plant, which will be located close to the DONG Energy power station in Kalundborg.

“This is a really good example of how residual products can be can be even better utilized. The incorporation of biogas in our natural gas network serves as an excellent supplement to the green power from the wind and sun as well as the green district heating from our power stations. Therefore, this project is an important step towards having an energy system that is green, independent and economically viable, ” says Thomas Dalsgaard, Group Managing Director of DONG Energy.

• The biogas plant will process about 300,000 tons of biomass per year.

• The biogas plant will be able to produce eight million cubic meters of natural gas per year. This is the equivalent of the natural gas consumption for approximately 5,000 households.

• The biogas produced will replace natural gas, resulting in an annual CO2 saving of around 17,000 tons.

• All nutrients that pass through the plant will be used as fertilizer.

• The biogas plant will be constructed on an area of approximately 50,000 m2 adjacent to the Asnæs power station in Kalundborg, Denmark.

• Around 5-6 employees will be used to operate the biogas plant. Around 15-20 jobs incl. subcontractors will be created when the plant is operational.

• Construction of the forthcoming biogas plant will commence in March 2017 and is scheduled to be put into operation as early as the spring of 2018.

• Bigadan, which has more than 30 years’ experience in the biogas industry, will manage the plant’s operation, while Novo Nordisk and Novozymes will supply biomass from their factories in Kalundborg as well as from Novozymes’ factory in Fuglebakken, Copenhagen.