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The Aluminum Emission Reporting Guidance, published by RMI in April 2023, provides a standardized methodology for aluminum producers to report greenhouse gas (GHG) emissions at the product level. The guide aims to increase transparency and enable the development of a market for low-carbon aluminum by establishing fixed system boundaries and requiring the use of primary data to ensure comparability across the supply chain.

This guide details the greenhouse gas (GHG) inventory methodology used by the World Resources Institute (WRI), covering the reporting period from Fiscal Year 2010 to 2021. It outlines the organizational boundaries, operational scopes, and specific calculation methods for direct and indirect emissions in accordance with the GHG Protocol Corporate Accounting and Reporting Standards.