For biofuels, lower calorific values, and well-to-wake GHG intensity are not standardized and should be included in the reporting to verifier.

For renewable fuels of non-biological origin (RFNBOs), well-to-wake GHG intensity is not standardized and should be included in the reporting to verifier. Suppliers are required to provide well-to-tank GHG emission factors and related certificate identifying the fuel procustion pathway.

Lower calorific values for such fuel types are pre-defined in Annex II of the FuelEU regulation. Proof of sustainability (PoS) should be seeked from supplier.