Article 28 Inventory preparation

identify key categories and prepare estimates applying appropriate methods to estimate emissions and removals from key categories;

collect sufficient activity data, process information and emission factors necessary to support the methods selected for estimating anthropogenic GHG emissions by sources and removals by sinks;

make a quantitative estimate of inventory uncertainty for each category and for the inventory in total and prepare recalculations of previously submitted estimates of anthropogenic GHG emissions by sources and removals by sinks;

compile the national inventory and implement general inventory quality control procedures in accordance with their quality assurance and quality control plan.

apply category-specific quality control procedures for key categories and for individual categories where significant methodological and/or data revisions have occurred, in accordance with the greenhouse gas inventory guidelines;

provide for a basic review of the inventory by an independent third party or personnel not involved in the inventory development,, before the submission of the inventory, in accordance with the planned quality assurance procedures referred to in Article 27(1)(c);

provide for a more extensive review for key categories and categories where significant changes in methods occurred;

based on the reviews according to the transparency MPGs and in accordance with Article 38 of Regulation (EU) 2018/1999 and periodic internal evaluations of the inventory preparation process, re-evaluate the inventory planning process in order to meet the established quality objectives referred to in Article 27(1)(c) of this Regulation.