Europe Aluminum Supply Faces Structural Shifts Amid Middle East Disruptions

European aluminum premiums have eased significantly from their April 2026 highs, driven by the resumption of shipments through the Strait of Hormuz. Fastmarkets assessed the P1020A premium in Rotterdam at $490-520 per tonne on September 8, down from a peak of $575-600 per tonne recorded in early April. This decline reflects the partial recovery of supply from Gulf smelters, including Emirates Global Aluminium and Aluminium Bahrain, following missile attacks in March that disrupted regional logistics.

Despite the price correction, market participants report persistent difficulties in securing physical shipments, indicating that logistical bottlenecks remain unresolved. The conflict has forced a reassessment of Europe’s long-term supply security, with buyers increasingly questioning the reliability of Middle Eastern imports. As a result, the focus has shifted toward alternative sources, particularly Canadian-origin material, which now commands a higher premium due to its lower carbon footprint and stable trade flows.

Low-Carbon Premiums Rise Amid Tariff Uncertainty

The low-carbon differential for P1020A aluminum in Europe widened to $15-30 per tonne on September 4, up from $10-25 per tonne in the previous month. This increase is attributed to supplier reluctance to commit units to the spot market amid uncertainty over potential changes to US tariffs on Canadian aluminum. The placement of South32’s Mozal smelter in Mozambique on care and maintenance in March removed a significant source of low-carbon metal, tightening the duty-unpaid market further.

Canadian suppliers have gained a competitive netback in Europe, making their material a preferred source for low-carbon requirements. However, the potential imposition of US tariffs on Canadian exports could divert these flows back to North America, reducing availability in Europe. This dynamic has increased the strategic value of long-term contracts for low-carbon units, as buyers seek to mitigate supply risk associated with spot market volatility.

Indonesian Capacity Expansion Reshapes Global Supply

Indonesia is emerging as a new hub for aluminum production, with smelting capacity expected to reach 1.5-1.8 million tonnes per year by the end of 2026. This growth is driven by projects such as the PT Hua Chin Aluminium Indonesia joint venture, which has an annual capacity of 480,000 tonnes. While this expansion offers new supply options, it introduces complexities related to the EU’s Carbon Border Adjustment Mechanism and the lack of London Metal Exchange-registered Indonesian material.

The EU’s CBAM continues to influence sourcing decisions, as buyers weigh the carbon intensity of different origins against cost. Indonesian producers face scrutiny over their emissions profiles, which may affect their competitiveness in the European market. Meanwhile, European smelters such as Hydro’s Slovalco and Alcoa’s San Ciprián have restarted production, adding to regional supply but not enough to offset the structural shifts in global trade flows.

Supply Chain Resilience Remains Primary Market Focus

The aluminum market is undergoing a fundamental restructuring as Europe seeks to diversify away from Gulf supply. The combination of geopolitical risk, tariff uncertainty, and carbon regulation is driving a premium on secure, low-carbon sources. Market participants are increasingly prioritizing supply chain resilience over short-term cost savings, leading to a more fragmented and complex trading environment.

As the industry navigates these changes, the focus remains on long-term availability rather than spot price fluctuations. The ability to secure consistent low-carbon supply will be a key determinant of competitive advantage for European manufacturers. With global supply chains in flux, companies must adapt their procurement strategies to ensure continuity in the face of ongoing geopolitical and regulatory uncertainty.