Under ISCC EU, the use of a disaggregated default value (DDV) for transport and distribution emissions (etd) for similar feedstocks might be acceptable if the transported goods can be transported in a similar way and the density is similar.
The Renewable Energy Directive (RED) provides two options for accounting for transport and distribution emissions (etd): a disaggregated default value (DDV) covering the entire supply chain, and a DDV applicable solely to downstream transportation and distribution of the final fuel. While the application of downstream etd values is generally more straightforward, upstream transport conditions can vary considerably and should therefore be carefully assessed against the underlying assumptions to ensure their appropriateness.
As described in the Joint Research Centre (JRC) report “Definition of input data to assess GHG default emissions from biofuels and bioliquids”, DDVs are derived using feedstock‑specific assumptions, including typical transport modes, transport distances and physical characteristics. These assumptions, in particular the assumed transport distances for the specific feedstock, must be representative of the actual supply chain.
It is the responsibility of the Certification Body (CB) to assess and decide whether the assumptions underlying the DDV are appropriate and whether the DDV for etd can be applied for similar feedstocks. Where this is not the case, actual transport emissions must be calculated in accordance with ISCC EU requirements.
The JRC report is available on the EU Science Hub:
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