This report provides an analysis of greenhouse gas (GHG) emissions and energy use data disclosures by certified ASI Entities (both Performance Standard and Chain of Custody Standard). This is an update of a similar study in 2020 and incorporates recently certified ASI Entities, up to 31 March 2021. In total, the review covered 55 ASI Member companies, of which there were 87 ASI Entities (expanding to 115 modified Entities, incorporating multiple supply chain activities by ASI Entities). ASI certifications have increased significantly (by 70%) since the last assessment (51 Entities in 2020). Of the 115 modified Entities, 21 are engaged in aluminium smelting and 9 in alumina refining; a further 9 Entities (all downstream activities) are not certified under the ASI Performance Standard V2 Criteria 5.1-5.3, and hence are not currently required to provide emissions/energy disclosures.