Biomass replaces gas at woodfired power plant

Submitted by admin on Tue, 06/29/2021 - 18:46

Time to change from fossil fuels to renewable biomass – the gas-fired boiler system, which supplied steam to the DSM Nutritional Products production facility in Sisseln, was out-of-date. Thanks to innovative technology, the new wood-fired combined heat and (CHP) power plant achieves a high rate of efficiency and saves 50,000 tonnes of CO2 per year.


The gas-fired boiler system that supplied steam to the DSM Nutritional Products production facility in Sisseln was out-of-date and had to be replaced. There was a clear goal in mind – to create a progressive, sustainable system and make fossil fuels a thing of the past. Thus, the old gas system was replaced with a wood-fired CHP plant, which now provides green steam for DSM and electricity for local households. 



Biomass power plant fuelled by wood chips from the local area


The power plant is fuelled by wood chips from the local area and produces steam and electricity. It supplies steam to DSM as well as the adjacent Syngenta and Novartis plants and the electricity the plant produces, is fed into the local grid. The Sisslerfeld wood-fired CHP plant features new technologies, such as fixed sensors used to measure the moisture content of the biomass supplied. This system is the first of its kind to be used in Switzerland. In addition, gas-fired peak load and backup boilers ensure maximum operational reliability and advanced filter technologies minimise emissions.


Underpinned by innovation and expertise, the project was developed and professionally implemented. ENGIE has been responsible for maintenance since the launch, including regular servicing and analysis of current conditions.


Green energy for industry and households


Switching to wood saves the power plant 50,000 tonnes of CO2 per year. The wood-fired CHP plant generates 267 GWh of steam and 42 GWh of electricity per year. The biomass power plant boasts an overall efficiency of 86% and has thus been awarded the Swiss ecolabel ‘naturemade star’ for environmentally friendly energy production.



Key figures

  • Saves 50,000 tonnes of CO2 per year
  • 86% rate of efficiency
  • Produces enough electricity to supply 17,500 households