Project description
Sappi has made significant progress in decarbonisation and climate action, including the complete modernisation of Boiler 11 at its Gratkorn mill in 2022, transitioning from coal to multi-fuel (natural gas and biomass). The new investment at Gratkorn further reduces fossil fuel use and related carbon emissions by modernising infrastructure for efficient biomass use and large-scale logistics.
The BioFit project establishes the infrastructure for increased biomass delivery handling, sorting and processing. This includes decentralising intermediate storage terminals within the surrounding regions and improving the biomass handling system at the mill. BioFit aims to supply approximately 300.000 tonnes of biomass per year, with 50% being delivered by truck and 50% by rail.
The project will cut fossil emissions by an additional 100.000 tonnes per year which, combined with the boiler modernisation, will enable an estimated 55% reduction in emissions compared to 2020.
The project offers a scalable model for mills in other regions or countries transitioning from coal to biomass, focusing on:
• Adapting local infrastructure for biomass logistics,
• Partnering with regional storage and transport providers,
• Leveraging EU or local funding for decarbonisation projects.
The implemented solution
The BioFit project is split into two parts:
• Step 1 focused on biomass handling at the plant, including the construction of two 10.000m³ storage silos (completed), an open storage area of 5.000m² (underway), and conveyor belts to move the biomass (underway).
• Step 2 involves the development of railway infrastructure, reducing scope 3 transport emissions, to deliver the biomass to the plant (completed), unloading trucks, a terminal, a photovoltaic system and an additional silo for biomass storage (underway).
Key Suppliers / Partners
- FMW, a mechanical equipment supplier, helped in the development of a general technical solution.
- Granit, a local company, delivered civil construction.
- Elin and Siemens, long-term partners, delivered the electric and automation components and did the installation.
- Papierholz Austria PHA, thanks to a long-term cooperation, sourced the biomass on the market.