Wood chips FAQs
Q. What are wood chips?
A. Wood chips are small pieces of logs or wood waste passed through a chipping machine, which turns them into 50mm pieces, also known as G50.
Q. What is the calorific value of wood chips?
A. Around 3.5 kWh per Kilogram, depending on moisture content. We recommend maximum 30% moisture for our biomass boilers.
Q. How much space do I need to store them?
A. Wood chips need around three times the storage space of wood pellets;
- Wood Chips = 250KG/m3
- Wood Pellets = 650KG/m3
Q. Where is the nearest supplier of wood chips?
A. The Biomass Suppliers' List is the most comprehensive list of high quality wood fuel suppliers in the South West and across the UK. Click here to locate high quality wood fuel suppliers in your area.
Q. What is the cost of wood chips?
A. Bought in wood chips cost roughly £120 per tonne. In our experience the cost for doing this is around £11 to £15 a tonne. With your own supply of logs you could chip your entire year’s supply of fuel in one morning (if your fuel store is large enough).
Wood pellet FAQs
Q. What are wood pellets?
A. Wood pellets are a biomass fuel, made from 100% wood including, compacted sawdust or other waste from sawmilling and manufacturing.
Q. What is the calorific value of wood pellets?
A. Wood pellets have a calorific vale of 4.8kWh per Kilogram. You will need one third of the space that you need for wood chip and get three times the heat from wood pellets.
- Wood Chips = 250KG/m3
- Wood Pellets = 650KG/m3
Q. How much do I need, compared to oil?
A. 1 Litre of oil = 2 Kg of wood pellets.
Q. What is the cost of wood pellets?
A. In our experience cost per tonne is £180 - £220.
Q. Where is the nearest supplier of wood pellets?
A. The Biomass Suppliers' List is the most comprehensive list of high quality wood fuel suppliers in the South West and across the UK. Click here to locate your nearest high quality wood fuel supplier.
Q. Can I use any kind of pellets?
A. Not with our boilers! You will need ENPlus A1 or A2 pellets. These pellets are 10-12mm in length and 6mm in diameter. Wood pellets must be dry, clean, and mechanically robust and have an ash content defined by the appropriate standard. They should also flow freely and be able to be delivered via a pneumatic system.