Sustainable Wood Pellet Fuel Production
Trading Spzoo produce wood pellet fuel with green energy at our plants in Midlothian and Invergordon (Scotland).
We use renewable energy and the highest quality materials in our sustainable manufacturing process. The energy used for production is generated on-site, powered by co-products from M. McKenzie saw-milling activities.
We source locally managed spruce and pine timber from sustainably managed forests.
Scroll down to learn more about our detailed manufacturing process.
Wood is at the heart of what we do. For every tree we use, we plant four more!
Sustainable Forestry Practices
Everything begins in our local forests. We believe sustainably managed forests are key to a greener future.
We innovate with timber, using it efficiently and planting four trees for every one harvested.
No part of the tree goes to waste in our saw-milling and manufacturing activities.
Watch the video below to see how we process every tree and increase our green impact on the environment.
Why Sustainability Matters
Environmentally Friendly & Less CO2: Using renewable energy and shorter transportation distances significantly reduces our carbon footprint compared to imported pellets.
Highest Quality Wood Pellets: By buying from a sustainable manufacturer, you ensure direct delivery, reducing the risk of cross-contamination.
Our manufacturing process in detail:
- Raw Material High quality virgin material is supplied as a combination of saw-milling co-products and on site chipping.
- Initial Processing This is the initial process to reduce particle size and especially screen out oversized material to improve the efficiency of the drying process.
- Drying Material dries at an air temperature of more than 100°C reducing moisture content by up to 50%. Indeed, all the heat and electricity is provided from our on site biomass combined heat and power stations.
- Hammermill Particle size is reduced further in a dry material hammer mill, ready for pressing into ENplus® A1 quality wood pellets.
- Pellet Press Material is extruded through the pellet forming die at a very high pressure to ensure the highest quality wood pellets. This process draws out the natural lignin in the wood which helps bind the material together. Moreover, occasionally a little natural binder may be added to improve the durability of the pellets.
- Cooling and Screening We cool the pellets from approx. 90°C to less than 40°C – This ensures they are fully hardened and are then screened to remove all fines. Then we recycle all fines back into the manufacturing process.
- Silos and Distribution Then we store all pellets in on-site silos, ready for filling our dedicated pneumatic pellet delivery trucks.We make sure we sample and test all pellets during production and on despatch to guarantee ENplus A1 quality standard. Wood Burning Pellets to order here