Wood Shredding Line Designed for Nordic Winters and Fuel Flexibility
How Jämtkraft increased recycled wood use from 20% to 75%, stabilized P63 fuel quality, and secured 70 t/h throughput for a new CHP plant supplying district heating to 50,000 residents.
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Client:
Jämtkraft - district heating & energy utility
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Project type:
High-capacity wood shredding line for CHP plant
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Location:
Östersund, Sweden
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Throughput:
Up to 70 t/h at consistent P63 fraction
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Installed power:
1,560 kW
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Line area:
2,800 m2
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Output materials:
Biofuel (P63), ferrous metals
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Special design:
Winter mode, dust suppression, weather-protected installation
When Fuel Quality, Uptime, and Winter Reliability All Matter
For more than 130 years, Jämtkraft has supplied reliable district heating to Östersund — even through the harshest Nordic winters. As demand for energy increased, worn-out boilers from the 1980s were replaced with a new combined heat and power (CHP) plant, setting significantly higher requirements for fuel preparation.
The existing shredding solution could no longer keep up:
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Throughput was insufficient
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Downtime risk was too high
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Fuel quality varied too much for stable boiler operation
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The system struggled with diverse and wet biofuels
For a CHP plant supplying 50,000 residents, inconsistent fuel is not an option.
