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A comparison of avoided greenhouse gas emissions when using different kinds of wood energy

A comparison of avoided greenhouse gas emissions when using different kinds of wood energy
A comparison of avoided greenhouse gas emissions when using different kinds of wood energy
In this study, micro-level data from wood energy producers in Hedmark County were gathered and analysed. The aim was to find how much greenhouse gas (GHG) emissions various kinds of wood energy cause (not only CO2, but also CH4 and N2O), which energy they substitute, their potential to reduce GHG emissions, and the major sources of uncertainty. The method was life cycle assessment. Six types of wood energy were studied: fuel wood, sawdust, pellets, briquettes, demolition wood, and bark.
GHG emissions over the life cycle of the wood energy types in this study are 2–19% of the emissions from a comparable source of energy. The lowest figure is for demolition wood substituting oil in large combustion facilities, the highest for fuel wood used in dwellings to substitute electricity produced by coal-based power plants.
Avoided GHG emissions per m3 wood used for energy were from 0.210 to 0.640 tonne CO2-equivalents. Related to GWh energy produced, avoided GHG emissions were from 250 to 360 tonne CO2-equivalents. Avoided GHG emissions per tonne CO2 in the wood are 0.28–0.70 tonne CO2-equivalents. The most important factors were technology used for combustion, which energy that is substituted, densities, and heating values. Inputs concerning harvest, transport, and production of the wood energy are not important.
Overall, taking the uncertainties into account there is not much difference in avoided GHG emissions for the different kinds of wood energy.
bioenergy, wood energy, greenhouse gas emissions, substitution, life cycle assessment
0961-9534
605-617
Petersen Raymer, Ann Kristin
0f4cd484-de00-4f73-ada4-ed29e59bd939
Petersen Raymer, Ann Kristin
0f4cd484-de00-4f73-ada4-ed29e59bd939

Petersen Raymer, Ann Kristin (2006) A comparison of avoided greenhouse gas emissions when using different kinds of wood energy. Biomass and Bioenergy, 30 (7), 605-617. (doi:10.1016/j.biombioe.2006.01.009).

Record type: Article

Abstract

In this study, micro-level data from wood energy producers in Hedmark County were gathered and analysed. The aim was to find how much greenhouse gas (GHG) emissions various kinds of wood energy cause (not only CO2, but also CH4 and N2O), which energy they substitute, their potential to reduce GHG emissions, and the major sources of uncertainty. The method was life cycle assessment. Six types of wood energy were studied: fuel wood, sawdust, pellets, briquettes, demolition wood, and bark.
GHG emissions over the life cycle of the wood energy types in this study are 2–19% of the emissions from a comparable source of energy. The lowest figure is for demolition wood substituting oil in large combustion facilities, the highest for fuel wood used in dwellings to substitute electricity produced by coal-based power plants.
Avoided GHG emissions per m3 wood used for energy were from 0.210 to 0.640 tonne CO2-equivalents. Related to GWh energy produced, avoided GHG emissions were from 250 to 360 tonne CO2-equivalents. Avoided GHG emissions per tonne CO2 in the wood are 0.28–0.70 tonne CO2-equivalents. The most important factors were technology used for combustion, which energy that is substituted, densities, and heating values. Inputs concerning harvest, transport, and production of the wood energy are not important.
Overall, taking the uncertainties into account there is not much difference in avoided GHG emissions for the different kinds of wood energy.

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More information

Published date: July 2006
Keywords: bioenergy, wood energy, greenhouse gas emissions, substitution, life cycle assessment

Identifiers

Local EPrints ID: 49311
URI: http://eprints.soton.ac.uk/id/eprint/49311
ISSN: 0961-9534
PURE UUID: c8cac7c5-99ee-4a7d-bc2d-cd1ab9d36dc8

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Date deposited: 29 Oct 2007
Last modified: 22 Jul 2022 20:57

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Author: Ann Kristin Petersen Raymer

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