Decarbonising primary aluminium production depends on separating emissions linked to electricity supply from direct process emissions produced by smelting technology. Renewable electricity can lower the broader carbon footprint of output, but it does not remove the need to monitor and reduce emissions tied to anode consumption and perfluorocarbon (PFC) releases. Commercial teams therefore need distinct tracking for electricity-related and process-related emissions.
European Commission guidance on CBAM implementation
The European Commission published definitive-period sector guidance on 14 August 2026, including dedicated material for electricity, iron and steel, and aluminium. It also refreshed its general CBAM questions and answers on 15 October 2026. The guidance is intended to support implementation but does not replace the binding regulation and implementing acts.
For iron-and-steel and aluminium goods already listed in Annex II, the existing CBAM calculation includes direct emissions. Renewable electricity procurement can still provide operational, customer, financing and decarbonisation benefits. However, it does not automatically reduce current certificate liability through purchased-electricity emissions.
Direct process emissions remain central for primary aluminium
Primary aluminium producers need to treat electricity-related emissions separately from direct process emissions generated during smelting. Anode-related CO2 emissions and PFC emissions require their own monitoring and abatement measures. Under current CBAM rules for listed aluminium goods, these direct process emissions remain central to the certificate calculation.
This separation affects how renewable electricity is used in practice, because renewable supply does not remove the need to address anode-linked CO2 and PFC releases. Electricity procurement can support broader decarbonisation efforts without changing the underlying focus of the certificate calculation for listed aluminium goods. The distinction therefore remains relevant for compliance planning.
Renewable attributes and contract allocation
Contracts covering renewable electricity attributes should prevent the same environmental claim from being sold more than once. This is particularly relevant when a single renewable project supplies multiple industrial customers. Electricity supply records and Guarantees of Origin (GoOs) can be reconciled to support appropriate claims.
Ownership of a renewable attribute does not, by itself, establish that the electricity qualifies for a specific CBAM treatment. The power contract is described as one element within a broader transition programme covering cell efficiency, anode management, process control and precursor data. Electricity traders can support energy procurement without implying that renewable supply resolves the product’s entire embedded-emissions position.
Investment models and customer commitments for low-carbon aluminium
Capital providers are expected to incorporate both decarbonisation capital expenditure and power purchase agreement (PPA) strategy into the same financial model. Revenue effects and compliance effects should be kept distinct within that modelling approach. The source material notes that a competitively priced renewable contract may improve cash generation and help finance process upgrades before purchased electricity gains a broader role in the relevant CBAM calculation.
Customer contracts for low-carbon aluminium should specify whether commitments relate to product carbon footprint, renewable electricity sourcing, a maximum emissions threshold or a disclosure requirement. Each commitment type requires its own evidence and may support a different commercial premium. Aluminium buyers are expected to separate power-cost competitiveness from process-carbon compliance when evaluating transition measures.
Legislative changes proposed for electricity treatment and downstream CBAM scope
The legislative proposal COM(2025) 989 would revise electricity treatment, including methodology for electricity default values and conditions for using actual values. It would broaden physical power purchase agreements to include intermediaries and modify elements of the congestion and nomination framework. The Council adopted its negotiating position on 12 June 2026, followed by the European Parliament on 15 September 2026.
The proposal remains under interinstitutional negotiation and is not treated as enacted law in the source material. The same legislative file also proposes extending CBAM downstream coverage from 2028 to selected steel- and aluminium-intensive goods. Both institutions support expansion, but their proposed product lists differ and remain subject to negotiation; until final legislation is adopted, existing scope remains the operating baseline.
For primary aluminium, renewable electricity is described as an important decarbonisation lever but not a substitute for reducing direct process emissions. Investors are therefore said to need a disaggregated carbon model reflecting each emissions source and the specific regulatory treatment applicable to the product under current rules.