Aluminum GHG Emissions Reporting Guidance

For the purposes of this guidance, when the remelting/casting and semi-fabrication processes are part of the same company, the scrap generated from the semi-fabrication process and used in the remelting/casting is considered to be part of the scrap-based input. [...] • The GHG emissions associated with intermediate products within the aluminum supply chain and exported energy shall be subtracted from the emissions calculation to reflect the actual emissions of the final product. [...] This method is commonly applied in the aluminum industry to treat alloy emissions, especially considering the great variety of alloys, the proportion of emissions, proprietary information of alloy specifications, and the higher emissions intensity of primary aluminum than most of the alloy elements. [...] The GHG emissions associated with such intermediate products within the aluminum supply chain shall be subtracted from the emissions calculation to ensure the reported emissions are only from the processes responsible for the production of aluminum. [...] The calculation of emissions intensity of aluminum hydroxide involves determining the total emissions in the refinery, emissions tied to calcination, mass of aluminum hydroxide for exports, and mass of aluminum hydroxide for producing metallurgical-grade alumina before calcination.