The carbon emission factors to be used in L2 (2006) compliance assessments are stipulated in the NCM methodology for a range of fuels. The Fuels Data facility in Apache View and <VE> Compliance allows fuel carbon emission factors to be edited. The default values are those which conform with NCM. For compliance runs, any departure from these values, or use of fuels not on the NCM list, would need to be carefully justified in supporting documentation.
