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Driving Change

Climate change

Drive sector-wide climate change mitigation and adaptation within a below 1.5°C scenario

ASI Certification

ASI’s goal is to reduce the aluminium sector’s emissions in line with climate science.

In addition to defining threshold emissions intensity performance for aluminium smelters, ASI Performance Standard V3 (2022) mandates all Entities to establish targets and plans to reduce direct and indirect emissions in line with 1.5°C aligned pathways.

From May 2024 these targets should be calculated using the ASI-developed and endorsed GHG Pathways Method.

ASI Performance Standard also demands annual disclosure of independently verified emissions data by all certifying Entities.

Key elements

  • 1.5°C GHG emission pathways for all certifying Entities, using ASI GHG Pathways Method and Calculation Tool. The GHG Pathways Decision Tree assists with the choice of base year and evidence requirements.  A Calculation Tool compatible with older versions of Excel is also available.
  • GHG emissions reduction plans for all certifying Entities
  • Direct and indirect emissions included:
    • Primary production: cradle-to-gate pathways (scopes 1,2 & upstream 3)
    • Downstream procurement pathways (scope 3 category 1).
    • Casthouse and semi-fabrication process pathways (scopes 1 & 2)
  • Additional smelter emissions intensity thresholds are designed to exclude new coal-fired production from certification but to allow existing coal-intensive producers to certify by reducing their emissions along aggressive emissions reduction pathways
  • A cradle to gate or ‘mine to metal’ approach to smelter thresholds includes emissions from bauxite mining, alumina refining, transport and carbon footprints of other inputs to the process (scope 1, scope 2, scope 3 categories 1,3 and 4)
  • Public disclosures of GHG data as a critical component of transparency, with independent verification before publication
  • The wide scope of the ASI Performance Standard aims to ensure that emissions reduction does not come at the expense of other critical environmental, social and governance (ESG) risks
  • The ASI Chain of Custody Standard provides a mechanism for cradle to gate emissions data to be connected to metal flow through optional carbon footprint disclosure, no matter where in the value chain the Entity operates

Beyond certification

  • Partnering with CRU Group on data alignment for their Emissions Analysis Tool, to support access to GHG data at the asset level, filter greenhouse gas emissions benchmarking curves by ASI Certification status, and understand Certification along specific supply chains to support chain of custody
  • Partnering with International Aluminium Institute and RMI on projects to develop Entity-level 1.5°C pathway methodologies
  • Active in Mission Possible Partnership, to encourage the use of common methods and standards and to use ASI’s Standards to drive change along a 1.5°C pathway
  • Active in the Aluminum Climate-Aligned Finance Working Group for the Center for Climate Aligned Finance to develop a robust methodology, net-zero roadmap, data access and scale to support lenders and clients on net-zero targets for aluminium portfolios
  • Science Based Targets Initiative Technical Advisory Group representative, seeking to align SBTi approaches with ASI-developed methods, potentially through a revised SBT Sectoral Decarbonization Approach (SDA)


Meet ASI members

“As a practitioner of ‘green and low-carbon aluminum’ development in China, joining ASI is our firm commitment to adhere to the road of green and low-carbon development and a new opportunity for us to enhance the corporate image of ‘capable, responsible and sustainable’. We sincerely look forward to working with ASI and its participants to make greater contributions to the sustainable development of the aluminum industry.”

— Zhengji Zhang, Chairman, Yunnan Aluminium Co., Ltd





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