The Danish Energy Agency’s new “VE til proces” (renewable energy for industrial processes) scheme will provide companies with substantial financial incentives to use biomass as an energy supply. DuPont Nutrition Biosciences ApS began exploring these opportunities and the company expects its overall fuel costs to drop in the future.

Client: DuPont Nutrition Biosciences ApS

The task
DuPont Nutrition Biosciences ApS – previously Danisco A/S – is one of the world’s biggest producers of enzymes and pectins. For many years the manufacturing plant has been working on using energy more efficiently. Since 2010, the company has been collaborating with Viegand Maagøe to establish a financial and technical decision making framework for a more sustainable utility system; for example, using waste heat for district heating purposes and wood pellets and wood chips as fuel.

How we carried out the task
Viegand Maagøe has primarily helped DuPont to firm up the technical and financial consequences of converting to wood chips or biogas, as well as increasing the export of district heating and electricity.

Our work includes:

  • mapping the existing boiler and turbine systems and operating patterns;
  • analyzing the tax implications of using alternative fuels, changes to electricity production and the export of waste heat for district heating purposes;
  • calculating the investment required to convert existing boiler systems to burn wood chips;
  • analyzing the total operational savings when converting to 100 % wood chip firing, including the possibility for increased electricity production and the export of district heating;
  • calculating the operating finances of establishing a biogas solution based on waste water; and
  • investigating the grant opportunities for different renovation scenarios.

The result
We expect that DuPont will be able to reduce its current heating costs by 20–30 % by converting to wood chips. The payback time for an investment of several hundred thousand euro will be less than 2 years. There is also additional potential for extra earnings if DuPont convert their electricity production and increase their exports of district heating.

For more information, contact:
Peter Maagøe Petersen, pmp@viegandmaagoe.dk and +45 21 70 03 08