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CO2 emissions from assets certified under the ASI Performance Standard

Latest info: 2023 // Project conducted: 2023

  • Analysis on decarbonisation of alumina refining, aluminium smelting and aluminium rolling processes from 2012 to 2022, (D&R Insight).

Learnings & recommendations

The CO2 emissions of ASI Certified Entities carrying out Smelting tend to be at the lower end of all global aluminium assets. This is due to legacy access to lower carbon electricity (e.g. hydropower), and the fact that Criterion 5.2 in the ASI Performance Standard effectively excludes around 40-50% of the sector that is coal-fired. For alumina refining and aluminium rolling, the analysis found that there is effectively similar performance between ASI Certified Entities and non-ASI Certified. All Entities certified under ASI Performance Standard need to reduce their CO2 emissions: the 1.5°C-aligned decarbonisation pathway applies to the whole supply chain.

ASI reflections

There is no clear reduction in emissions intensity of any cohort over the past 5-10 years.  With the addition of the new GHG decarbonisation requirements (5.3) in the 2022 Performance Standard, and the February 2023 launch of the GHG Pathway Method to enable implementation, the ongoing rollout of these will enable us to analyse its impacts.  Non-conformances are expected for Entities that are unable to decarbonise in line with a 1.5oC scenario. 



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