Biomass Energy Content & Price

BIOMASS ENERGY CONTENT & PRICE INFORMATION:

Table 3 Typical bulk, calorific and energy densities of different biomass and fossil fuels

Fuel Net CV1 MJ/kg CV kWh/kg Bulk density kg/m3 Energy density by volume MJ/m3 Energy density by volume kWh/m3
Lower Upper Lower Upper Lower Upper
Woodchips @ 30% 12.5 3.5 200 250 2,500 3,125 694 868
Log wood (stacked- air dried: 20% MC 14.6 4.1 350 500 5,110 7,300 1,419 2,028
Wood – solid oven dried 18.6 5.2 400 600 7,440 11,160 2,067 3,100
Wood pellets 17 4.7 600 700 10,200 11,900 2,833 3,306
Miscanthus (bale – 25% MC) 12.1 3.4 140 180 1,694 2,178 471 605
House coal 29 8.1 850 24,650 6,847
Anthracite 32.1 8.9 1,100 35,310 9,808
Oil 41.5 11.5 865 35,898 9,972
Natural gas - - - 36 10.13
LPG 46.9 13.0 500 23,472 6520

Source: Gastec at CRE Ltd. and Annex A,Digest of UK Energy Statistics 2007

FUEL COST COMPARISON:

Fuel Price per unit kWh per unit pence per kWh
Wood chips (30% MC) £100 per tonne 3,500 kWh/t 2.9p/kWh
Wood pellets £190 per tonne 4,800 kWh/t 4.0p/kWh
Natural gas 4.8p/kWh 1 4.8p/kWh
Heating oil 58p per litre 10 kWh/ltr 5.8p/kWh
LPG (bulk) 49p per litre 6.6 kWh/ltr 7.4p/kWh
Electricity 15.0p/kWh 1 15.0p/kWh

Source: Biomass Energy Centre – Typical prices for bulk purchase of fuels at domestic or small commercial scale, August 2011. These prices are intended for guidance only and represent the typical cost per unit of fuel energy for comparison.

7ads6x98y