Gulf Strikes Cut 3.5Mt of Aluminium Supply, Prices Hit Four-Year High

Two of the world’s largest aluminium facilities were knocked offline in late March when Iranian missile and drone strikes hit EGA’s Al Taweelah alumina refinery and Alba’s primary production facility in Bahrain. EGA has warned the refinery could remain idle for up to 12 months. The damage removed an estimated 3-3.5 million tonnes of annual capacity from global markets, roughly 5% of primary aluminium production, at a moment when LME aluminium inventories had already thinned to below 300,000 tonnes and prices were pressing four-year highs above USD 3,500 per tonne. The cash-to-three-month spread has flipped into backwardation, confirming the market is pricing a near-term shortage rather than anticipating one. What follows maps the full chain: from physical facility damage through the Strait of Hormuz logistics squeeze to analyst price forecasts and the procurement strategy overhaul now underway among major buyers globally.

Two facilities, 3.5 million tonnes, and a market that cannot easily absorb the hit

The strikes in late March targeted two specific assets. EGA’s Al Taweelah alumina refinery, with nameplate capacity of 1.5 million tonnes per year, is the larger of the pair. Alba’s facility, producing 1.6 million tonnes per year, suffered severe disruption at the same time. According to S&P Global, EGA has guided that the refinery could remain offline for up to 12 months.

Wood Mackenzie and AL Circle estimate the total at-risk volume at 3-3.5 million tonnes for 2026, approximately 5% of global primary supply. Wood Mackenzie flags a broader 6.8 million tonnes of Gulf capacity as exposed to ongoing conflict risk.

The headline percentage understates the effective shock. The Middle East holds 8-9% of global smelting capacity but accounts for a far larger share of freely tradeable metal. Roughly 80-85% of Middle Eastern aluminium production is exported.

The Gulf region represents 18% of ex-China aluminium exports, according to Wood Mackenzie, meaning Western and Asian buyers bear a disproportionate share of any supply shortfall.

A 5% cut to global production translates into a considerably larger reduction in the metal that non-Chinese consumers can actually source.

The Strait of Hormuz is now an aluminium chokepoint, not just an oil one

The production losses tell only half the story. The Strait of Hormuz functions as a dual chokepoint for the aluminium market, compressing supply from both directions simultaneously:

• Export route blockage: Gulf smelter output must transit the Strait to reach European and North American buyers. Reuters confirms that conflict has severely constrained aluminium shipments through the waterway, limiting exports to the US and Europe.
• Alumina import constraint: Wood Mackenzie estimates that up to 60% of alumina supply to Middle Eastern smelters is routed through the Strait. A sustained disruption would starve operational smelters of feedstock, deepening any production deficit beyond the facilities already offline.
• War-risk insurance cost escalation: Surging per-voyage premiums have added material costs to every Gulf shipment, with this cost baked into delivered prices regardless of whether nameplate production is curtailed.

Wood Mackenzie characterises the Strait as “effectively a chokepoint for the global aluminium market.”

Dual chokepoint dynamics affecting the Gulf are reshaping commodity flows well beyond aluminium, with the same Strait of Hormuz constraints that are squeezing metal exports also fragmenting oil routing patterns and pushing freight and insurance costs higher across multiple commodity classes.

War-risk insurance: the hidden price of Gulf metal

War-risk insurance premiums for vessels transiting the Gulf have surged into the multi-million-dollar per-voyage range, with some market observers citing costs of up to USD 7 million in extreme cases for the highest-risk zones. This figure remains unverified by independent sources, but the directional shift is broadly confirmed. Kpler describes the result as a “war premium” on aluminium, where elevated freight and insurance costs support delivered prices irrespective of smelter operating status.

Buyers in Europe and North America are paying higher effective prices before any nameplate capacity is permanently lost.

What the market signals are already confirming

Three data points, read together, describe a market that has already absorbed the supply disruption into its structure.

AL Circle reports that LME stocks fell by approximately one-third between January 2026 and mid-year, dropping below the 300,000-tonne threshold. The market entered this crisis with little buffer capacity.

Reuters reports that the LME cash-to-three-month spread has shifted from contango into backwardation, a structural signal of near-term tightness rather than speculative positioning.

LME aluminium has traded at USD 3,544 per tonne as of 1 August 2026, according to AL Circle, with multiple sessions above the USD 3,400-3,500 range as disruptions intensified. The thin inventory buffer means there is minimal lag between any further supply shock and that shock appearing in spot availability and delivered prices.

The LME brand listing rules are simultaneously undergoing proposed reform, with the exchange considering a reduction in the track record requirement from twelve months to six, a change that could accelerate the entry of alternative Gulf and non-Gulf producers into the listed contract ecosystem at precisely the moment buyers are seeking new approved sources.

How big could the price move get? Analyst forecasts and deficit scenarios

AL Circle’s near-term outlook centres on approximately USD 3,500 per tonne, consistent with current trading levels. Citi, as cited by S&P Global, has raised its 2026 LME price projection to USD 3,600 per tonne, with a bull case if disruptions deepen and persist.

Citi’s bull case targets USD 4,000 per tonne, representing roughly 13% upside from current spot levels, a scenario contingent on sustained Gulf production losses through the second half of 2026.

The deficit arithmetic underpins these forecasts. A sustained 3 million tonne supply removal could push the market into a gross deficit of approximately 2.9 million tonnes, with a base-case deficit of roughly 2 million tonnes after adjusting for demand destruction and partial supply responses. ING offers a more contained view, suggesting the primary near-term impact may fall on regional premiums rather than a full global repricing, assuming disruptions remain time-limited.

The World Bank Commodity Markets Outlook for April 2026 characterised the conflict in the Middle East as a historic shock to commodity markets, specifically citing aluminium as recording one of the largest monthly price increases among industrial metals due to reduced Gulf exports and rising input costs, providing multilateral institutional backing for the scale of disruption analysts are now pricing.

Three factors could compress the deficit:

• Demand destruction in price-sensitive segments such as packaging and some construction end-markets
• A possible partial restart of idled European smelter capacity if sustained high prices offset energy costs
• A limited supply response from China, primarily through value-added product exports rather than large volumes of primary ingot

Past performance does not guarantee future results. Financial projections are subject to market conditions and various risk factors.

Why buyers are rebuilding supply chains from scratch

The supply disruption has prompted a structural repricing of how major aluminium consumers source metal. According to CRU and S&P Global commentary, procurement teams are no longer evaluating supply relationships solely on LME-plus-premium economics. Supply security, route diversity, and counterparty resilience have been repriced into contracting decisions.

Three specific procurement changes are underway:

1. Geographic diversification: Buyers are shifting sourcing attention toward Canada, Norway, Australia, and selected Asian producers, accepting higher base costs in exchange for reduced concentration risk.
2. Higher working inventories: Companies are carrying more physical metal as a deliberate hedge against disruption and price spikes, absorbing the carrying cost as a risk-management expense.
3. Long-term contracting and dual-sourcing: Increased use of long-term offtake agreements and dual-sourcing arrangements, with geographic diversification clauses written into new supply contracts.

EGA’s guidance of up to 12 months offline makes it impossible for buyers to wait for normalisation before acting. The procurement shift is happening now.

Critical mineral supply chain diversification is accelerating well beyond aluminium: Africa is repositioning itself as a source of strategic materials for buyers seeking alternatives to politically concentrated supply zones, a trend that compounds the procurement shift underway among aluminium consumers moving away from Gulf dependence.

Which alternative producers stand to benefit

Canada, Norway, and Australia are the primary geographic beneficiaries of the diversification shift. Producers in these jurisdictions offering supply certainty and route diversity outside the Gulf are positioned for sustained demand and potential premium pricing, particularly from European and North American industrial buyers.

The five indicators that will determine where aluminium prices go from here

Five signals will separate a medium-term premium episode from a multi-year structural deficit:

1. EGA Al Taweelah repair timeline: The single most consequential variable. A 3-month return to production is a very different outcome from 12 months offline. Any update from EGA on repair progress resets the supply balance calculation for the rest of 2026 and into 2027.
2. LME inventory draws: Continued declines below 300,000 tonnes would confirm the deficit is deepening. A stabilisation or rebuild would signal rerouted supply is partially offsetting the Gulf shortfall.
3. Cash-to-three-month spread: Sustained backwardation confirms near-term tightness is structural, not transient. A return to contango would suggest the market is finding equilibrium.
4. Regional physical premiums: European and US delivered premiums are the clearest indicator of how Strait of Hormuz logistics costs are translating into end-user prices, independent of the LME headline.
5. Alternative producer guidance: Statements from Hydro, Rio Tinto, and Alcoa on restarts or capacity expansions will indicate how much of the Gulf shortfall can be covered from outside the region.

Aluminium’s new risk geography demands a new investment and procurement calculus

The Middle East conflict has moved aluminium from a logistics disruption into a potential structural deficit. Price signals, inventory drawdowns, and spread structure already confirm that transition is underway. For investors, the risk-reward on aluminium exposure has shifted materially toward the upside, with Citi’s USD 3,600-4,000 per tonne forecast range reflecting genuine supply-side uncertainty rather than speculative exuberance. For buyers, maintaining pre-crisis procurement frameworks now carries both price risk and availability risk simultaneously.

The geopolitical risk premium in commodity markets has behaved differently across asset classes in 2026: gold’s bull run is showing signs of consolidation even as the same conflict driving aluminium’s supply shock continues, suggesting investors are beginning to disaggregate the specific supply-side consequences of Gulf disruption from generalised safe-haven positioning.

The open question that determines the range of outcomes remains singular: whether EGA’s Al Taweelah refinery returns in three months or twelve. That variable separates a medium-term premium episode from a multi-year structural deficit that could reshape aluminium sourcing for a generation.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions.