Therefore, it is recommended that the approach to address co-products
should be flexible and, that the most appropriate approach (i.e. that
which most accurately estimates the net GHG impact) should be
decided for each individual co-product. In practice, this is means that:
• Substitution will be the first choice approach, and
• (I think they omitted the word energy here) Allocation will be preferred when co-products are used for heat or
electricity generation or are converted into another biofuel.
• Allocation by market value will be allowed when it is not possible to define
a sensible substitution approach.