When using multiple substrates, how should they be accounted for in biomass fuel production? Can DDV be used for some and not for others?

RED II, Annex VI, part c outlines the methodology market operators need to apply in the case of co-digestion of different substrates in a biogas plant for the production of electricity or biomethane. See the system document 205 for more details on the calculation of emissions. A mixture of DDV and actual values is possible when dealing with multiple substrates.

The purpose of the document “Greenhouse Gas Emissions” is to explain the options for stating greenhouse gas (GHG) emission values along the supply chain and to provide the methodology, rules and guidelines for calculating and verifying GHG emissions and emission reductions.