The description of the methodology begins with an overview of biofuel GHG emissions. Following this is an explanation of how the systems are modelled using the BioGrace calculation tool, and then a review of the allocation approach and how LUC emissions are calculated.
The study considers the following sources of GHG emissions, including emissions due to energy inputs and auxiliary materials:
land use change (LUC);
cultivation of feedstocks;
transport of feedstocks to the bioethanol plant;
production of the biofuel and its co-products;
co-products exported from the system;
transport of the biofuel, either to the first point of distribution in-country or...