ASI certifies Mahan Aluminium against Performance Standard V3.1 with Provisional status
The facility produces primary aluminium products, including ingots, sows, billets and wire rod, with an annual smelting capacity of 398,000 tonnes.
5 November 2026
Aluminium Stewardship Initiative (ASI) today announced that Mahan Aluminium has been certified against the ASI Performance Standard V3.1 (2023). The facility produces primary aluminium products, including ingots, sows, billets and wire rod, through aluminium smelting, casthouse and anode manufacturing operations, with an annual smelting capacity of 398,000 tonnes, as well as a 900 MW thermal captive power plant and 6.25 MW solar plant.
The ASI Certification program was developed through an extensive multi-stakeholder consultation process and is the only comprehensive voluntary sustainability standard initiative for the aluminium value chain. The ASI Performance Standard V3 and ASI CoC Standard V2 were launched in May 2022 following a multi-year revision process. The ASI Performance Standard V3 defines 11 principles and 62 criteria under three sustainability pillars – Environment, Social, and Governance – with the aim to address pressing sustainability issues in the aluminium value chain, such as biodiversity, Indigenous Peoples rights, circularity, and greenhouse gas emissions. The 2022 Standards and related documents underwent a minor update in 2023, accounting for editorial changes, correction of minor errors and for general clarification, culminating in the release of Performance Standard V3.1 (2023) and Chain of Custody Standard V2.1 (2023).
The Provisional Certification serves as a strategic and flexible approach for aluminium sector actors to gain access to ASI’s sustainability standards framework, learn, and improve their practices over a defined period. It provides an opportunity for Members to commence their ASI Certification journey, while requiring a commitment to move towards Full Certification as soon as is practically possible.
The independent, third-party audit of Mahan Aluminium was carried out by CETIZION Verifica. A full listing of audit findings is available in the summary audit reports, linked below. Eleven minor non-conformances were noted under Criteria 1.1 Legal Compliance, 2.3b Environmental and Social Management Systems – Social, 3.4a-f Stakeholder Complaints, Grievances and Requests for Information, 5.1a-b Disclosure of GHG Emissions and Energy Use, 5.3b-e GHG Emissions Reduction Plans – Targets, review and disclosure, 5.4 GHG Emissions Management, 8.1a Biodiversity and Ecosystem Services Risk and Impact Assessment, 8.2a-g Biodiversity Management, 9.3a-i Indigenous Peoples, 10.3a-c Forced Labour and 10.7a-c Remuneration. One major non-conformance was identified under Criterion 5.2b Aluminium Smelter GHG Emissions Intensity – In production up to and including 2020, resulting in a Certification with Provisional status of one year. Mahan Aluminium will be implementing corrective actions, to be verified in a follow-up audit. CETIZION Verifica approved the corrective action plans for the Major non-conformance prior to submission of the audit report to ASI.
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