Revision of N2O emission factors for combustion of gaseous and solid fuels

A review of emission factors used in the Swedish greenhouse gas inventory carried out in 2010 on behalf of the Swedish Energy Agency and the Swedish Environmental Protection Agency, revealed that the emission factors applied for N2O in combustion of gaseous and solid fuels are most likely too high.

The current Swedish emission factor for N2O for all gaseous fuels used in stationary applications is 2.0 kg N2O/TJ, which is substantially higher than the IPCC default emission factor of 0.1 kg/TJ. A proposal for revision of the Swedish emission factor was brought forth in the review from 2010, where the authors suggest implementation of the IPCC default emission factor for gaseous fuels.

The aim of the present study was to find and analyze literature and other information concerning emissions of N2O for solid fuels (coke, coal and peat) and gaseous fuels (propane, butane, town gas, natural gas, coke oven gas, blast furnace gas, LD-gas, landfill gas and refinery gas) in the stationary combustion sector to use as decision basis for a revision of the Swedish emission factors.