Division C METHODOLOGY
United Kingdom
- 1Greenhouse gas emissions from the production and use of transport fuels, biofuels and bioliquids shall be calculated as follows:
- 2Greenhouse gas emissions from biofuels and bioliquids shall be expressed as follows:
- 3Greenhouse gas emissions savings from biofuels and bioliquids shall be calculated as follows:
- 4The greenhouse gases taken into account for the purposes of point 1 shall be CO2, N2O and CH4. For the purposes of calculating CO2 equivalence, those gases shall be valued as follows:
- 5Division 5
- 6Division 6
- 7Annualised emissions from carbon stock changes caused by land-use change, el, shall be calculated by dividing total emissions equally over 20 years. For the calculation of those emissions, the following rule shall be applied:
- 8The bonus of 29 g CO2eq/MJ shall be attributed if evidence is provided that the land:
- 9Division 9
- 10Division 10
- 11Emissions from processing, ep, shall include emissions from the processing itself; from waste and leakages; and from the production of chemicals or products used in processing including the CO2 emissions corresponding to the carbon contents of fossil inputs, whether or not actually combusted in the process.
- 12Division 12
- 13Emissions of the fuel in use, eu, shall be taken to be zero for biofuels and bioliquids.
- 14Division 14
- 15Division 15
- 16Where a cogeneration unit – providing heat and/or electricity to a fuel production process for which emissions are being calculated – produces excess electricity and/or excess useful heat, the greenhouse gas emissions shall be divided between the electricity and the useful heat according to the temperature of the heat (which reflects the usefulness (utility) of the heat). The useful part of the heat is found by multiplying its energy content with the Carnot efficiency, Ch, calculated as follows:
- 17Division 17
- 18For the purposes of the calculation referred to in point 17, the emissions to be divided shall be eec + el + esca + those fractions of ep, etd, eccs, and eccr that take place up to and including the process step at which a co-product is produced. If any allocation to co-products has taken place at an earlier process step in the life-cycle, the fraction of those emissions assigned in the last such process step to the intermediate fuel product shall be used for those purposes instead of the total of those emissions.
- 19For biofuels, for the purposes of the calculation referred to in point 3, the fossil fuel comparator EF(t) shall be 94 g CO2eq/MJ.