The below data are from Forest Research (FR)

Fuel Net CV by mass Bulk density Energy density by volume
GJ/ton kWh/kg kg/m³ MJ/m³ kWh/m³
Wood chips (30% MC) 12.5 3.5 250 3100 870
Logwood (stacked – air dry: 20% MC) 14.7 4.1 350-500 5200-7400 1400-2000
Wood (solid – oven dry) 19 5.3 400-600 7600-11400 2100-3200
Wood pellets (10% MC) 17 4.8 650 11000 3100
Miscanthus (bale – 25% MC) 13 3.6 140-180 1800-2300 500-650
House coal 27-31 7.5-8.6 850 23000-26000 6400-7300
Anthracite 33 9.2 1100 36300 10100
Heating oil 42.5 11.8 845 36000 10000
Natural gas (NTP) 38.1 10.6 0.9 35.2 9.8
LPG 46.3 12.9 510 23600 6600