In 2022, the IAI published Guidelines on Transparency that state that when reporting the cradle-to-gate carbon footprint of products that contain scrap there should be full transparency on the methodology used for the carbon footprint calculation.
This reference document, summarising three potential approaches, should serve aluminium producers to disclose the methodology they are using to calculate the carbon footprint of their products in a transparent way. More specifically, it gives clarification on how to allocate carbon emissions to a scrap flow, when the production process of semi-finished or final products which generated the scrap and the recycling process which uses the scrap as input are not part of the same product system.
This document is based on a research project executed by life cycle assessment and eco-design consultancy Solinnen for IAI on the same topic.