Wood Pellets

Wood pellets are made of sawdust produced as a waste product from sawmills. As suggested by the name, when sawdust is compressed it produces a pellet shape with a shiny finish, due to the natural glues found in sawdust.

In order to work in the Lindner & Sommerauer your pellets need to:

  • Be accredited to the ENPlus A1 or A2 Standard 
  • Be 5-40mm long
  • Be 5-6mm in diameter 
  • Have a water content of 8-10% 
  • Have an ash content of 0.5%. 

Provided you acquire the correct pellets they will have a bulk weight of around 650kg/m3 and will produce 4.9kWh of heat per kilogram.

We may have mentioned this before but… we can’t stress enough how important the quality is. Only use HETAS/WOODSure suppliers. To be sure of quality use the Biomass Suppliers List (BSL) to track down trusted suppliers all over the UK Concentrating on finding the best supplier is a great way to ensure you have a happy, healthy boiler.

Wood Pellet Delivery


Your pellets need to be kept in a  specifically built store with convenient access for delivery and an inspection hatch for weekly checks. Pellets are usually ‘blown’ in through an external filler tube by a tanker.

Check out the table below to see how you can expect wood pellets to perform, compared to other biofuels:

Fuel kg/m3 g CO2/kWh kWh/ Kg
Wood Chips 250 7 3.5
Logs 350 7 4.1
Wood Pellets 650 15 4.8
Coal n/a 484 8.6
LPG n/a 323 6.6
Heating Oil n/a 350 10
Electricity n/a 530 n/a
Source: Biomass Energy Centre