Supported by CBAM.Clarion.Engineer
Aluminium smelters can provide renewable energy projects with large, long-term offtake commitments, strengthening their financing proposition. However, their near-continuous electricity demand makes supply profiles, firmness obligations and replacement arrangements central to the bankability of both the renewable project and the industrial buyer.
Baseload demand creates contractual challenges
Renewable generators may deliver electricity on a pay-as-produced basis, while aluminium smelters require a firm supply profile. Traders and utilities can bridge this gap through shaping and balancing services, but electricity purchased from other sources should be identified separately from output supplied by the named installation when a specific electricity-related evidence claim is intended.
The allocation of these responsibilities directly affects the commercial structure of a power purchase agreement (PPA). A smelter’s stable baseload demand can support a renewable portfolio, but the parties must establish who bears hourly shaping requirements and imbalance costs. These expenses can materially affect the delivered PPA price and should not be concealed within an environmental premium.
Lenders must examine risk allocation and data access
Lenders should assess several elements of the proposed supply arrangement, including:
- Load correlation between the smelter’s demand and the renewable portfolio’s generation profile.
- Curtailment rights and their financial consequences for the generator and offtaker.
- Credit support available to secure contractual obligations.
- Replacement-price exposure when contracted electricity cannot be delivered as planned.
- Data access needed to substantiate electricity sourcing and product-carbon claims.
The strongest contractual structure allows industrial demand to support project debt without requiring an independent power producer (IPP) to guarantee outcomes beyond its control. Firmness obligations should reflect the physical capabilities of the renewable portfolio and clearly allocate the costs of balancing, replacement electricity and other supply risks.
Separate electricity economics from product emissions
Aluminium procurement requires two parallel assessments: the economics of physical electricity supply and the methodology used to calculate product emissions. These issues affect the same industrial business but do not necessarily follow the same carbon-accounting boundary.
The smelter may also require Guarantees of Origin (GoOs) and product-carbon data. Contracts should specify how these services are allocated across the energy supply, environmental attributes and carbon-value streams to prevent the same renewable generation or environmental claim from being sold more than once.
The Commission published definitive-period sector guidance on 14 August 2026, including dedicated guidance for electricity, iron and steel, and aluminium. It refreshed its general CBAM questions and answers on 15 October 2026. These materials explain implementation but do not replace the binding regulation and implementing acts.
Proposed CBAM reforms remain under negotiation
The current legislative file proposes expanding CBAM downstream from 2028 to cover selected steel- and aluminium-intensive goods. Both the Council of the EU and the European Parliament support an expansion, although their proposed product lists differ and remain subject to negotiation. Until final legislation is adopted, the existing scope remains the operating baseline.
A separate reform proposal, COM(2025) 989, would materially change electricity treatment, including the methodology for electricity default values and aspects of the conditions for using actual values. It would introduce a broader concept of physical PPAs involving intermediaries and alter 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 should not be treated as enacted law.
For aluminium buyers, the central decision rule is to separate power-cost competitiveness from process-carbon compliance and finance each transition measure according to the benefits it can demonstrably deliver. Anchor offtake can reduce financing risk, but only when contractual firmness obligations reflect the renewable portfolio’s physical capabilities and allocate supply risks transparently.
