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Different units of biomass energy and their converting values

Converting values between some common biomass energy units are indicated below:

• 1 metric tonne bone dry wood fuel = 18 GJ = 5 MWh = 500 litres oil  = 500 m3 natural gas
• 1 tonne air-dry wood fuel = 3 MWh = 11 GJ
• 1 cubic metre of wood chip = about 1.0 MWh = 3.6 GJ
• 1 barrel of oil = 6.1 GJ = 1.7 MWh, = 1.7 m³ wood chip = 0.5 m³ solid bone-dry wood
• 1 m³ solid bone-dry wood  = 0.68 tonnes