By Penny Langford
The International Energy Agency (IEA) has issued a stark update in its Global Critical Minerals Outlook 2026, warning that the near-term copper supply outlook has "worsened considerably." While long-term structural gaps have slightly narrowed due to new projects in Africa, the immediate market is facing a double-sided squeeze: a sudden industrial chemical shortage and an explosion in demand from artificial intelligence (AI) infrastructure.
According to the IEA, copper is now a primary bottleneck for the global energy transition. Despite a wave of investment in nickel and lithium, copper remains stubbornly resistant to supply expansion. The agency projects that under current policy settings, primary copper supply by 2035 will be roughly 25% short of global requirements.
In the immediate term, the copper deficit impact 2026 is being driven by factors outside the mine pit: specifically, a global shortage of sulphuric acid and geopolitical disruptions in the Middle East and China.
The Acid Chokepoint: Why Sulphuric Acid is Tightening the Market
A critical and often overlooked component of copper production is sulphuric acid, used extensively in solvent extraction–electrowinning (SX-EW) processes. The IEA notes that more than a seventh of global primary copper supply is effectively "hostage" to the sulphuric acid market.
Two major geopolitical factors have converged to create this crisis:
- China’s Export Ban: China, a dominant global supplier of sulphuric acid, has implemented strict export controls to prioritize its domestic industrial and agricultural sectors.
- Strait of Hormuz Disruption: Ongoing conflict and logistical instability in the Middle East have disrupted the flow of sulphur, a byproduct of oil and gas refining and the primary feedstock for sulphuric acid production.
This chemical squeeze has a direct impact on the copper price forecast 2026. In the Democratic Republic of Congo (DRC), approximately 45% of copper production relies on acid-based leaching. The IEA estimates that roughly 1.5 million tonnes of global copper output: over 6% of the world's mined supply: is currently at risk of disruption due to acid availability and pricing.
Smelter Production Cuts and Operational Risks
The supply strain is not limited to African leaching operations. In China, which processes over half of the world's copper concentrates, top smelters have already begun coordinating production cuts. Facing historically low treatment and refining charges (TC/RCs), major Chinese smelting groups have signaled plans for a production reduction of more than 10%.
This reduction in refined output comes at a time when global inventories are already under pressure. While projects like Zijin's exports from the Manono project provide hope for lithium, the copper sector has not seen a similar influx of ready-to-run capacity.
Furthermore, existing operations are facing localized threats. As reported recently, the Saindak copper-gold mine has warned of potential shutdowns, highlighting the vulnerability of copper supply chains to regional instability.
The AI Factor: Copper Demand and Data Centers 2026
While supply falters, the demand side of the equation is being rewritten by the rapid expansion of AI and hyperscale computing. The IEA’s Stated Policies Scenario projects that global copper demand will grow by more than 25% by 2040.
Copper demand ai data centers 2026 is becoming a major focal point for analysts. Large-scale data centers require immense amounts of copper for:
- Power Distribution: High-conductivity busbars and switchgear.
- Thermal Management: Copper-intensive cooling systems required for high-density AI chips.
- Grid Connectivity: The massive electrical infrastructure needed to bring gigawatts of power to server farms.
Research suggests that data center capacity is projected to double by 2030, potentially accounting for 5% to 10% of incremental copper demand. When combined with the massive copper requirements of mine electrification initiatives and renewable energy grids, the competition for available metal is set to intensify.
Market Snapshot: Copper Supply/Demand Projections (IEA 2026)
| Metric | 2025 (Actual/Est.) | 2035 (Projected) | 2040 (STEPS Scenario) |
|---|---|---|---|
| Global Refined Consumption | 28.0 Mt | 33.5 Mt | 36.4 Mt |
| Projected Supply Gap | Marginal Surplus/Tight | -25% Shortfall | -30%+ Shortfall |
| Cleantech Demand (EVs/Grid) | ~7.5 Mt | ~14.2 Mt | ~21.0 Mt |
| AI/Data Center Incremental | ~0.8 Mt | ~2.5 Mt | ~3.8 Mt |
Long-term Outlook: The 2035 Structural Gap
The IEA’s updated outlook suggests that while new projects in the DRC and Zambia (such as the Lumwana expansion) have brought roughly 650,000 tonnes of additional supply into the 10-year forecast, it is not enough to close the gap. The move toward net-zero remains the primary engine of demand, with the "copper-intensive" nature of electricity being the critical factor.
Building a new copper mine today takes an average of 16 to 17 years from discovery to first production. This lead time is the "hard wall" that prevents the market from reacting quickly to price signals. Operators are increasingly looking toward advanced mining technology and higher-efficiency processing to squeeze more value from existing assets, but the geological reality of declining ore grades across major Chilean and Peruvian mines remains a headwind.
Conclusion for Investors and Operators
The IEA Global Critical Minerals Outlook 2026 serves as a warning that the copper market is entering a period of extreme volatility. The transition from a "geological scarcity" narrative to a "chemical and geopolitical chokepoint" narrative: driven by sulphuric acid and AI: changes the risk profile for investors.
Operators must now navigate a landscape where operational costs are increasingly tied to chemical feedstocks and where the speed of demand growth from the tech sector may outpace even the most aggressive mining schedules. For the 2026 horizon, the base case remains one of persistent tightness, with any further disruption to the sulphuric acid trade likely to trigger significant price spikes.
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IEA Warning: The copper supply outlook for 2026 has "worsened considerably." A global sulphuric acid shortage: driven by China's export ban and Middle East instability; is putting 1.5M tonnes of output at risk. Combined with a surge in demand from AI data centers and power grids, the copper deficit is no longer just a long-term threat; it's a near-term reality.
#Mining #Copper #IEA #EnergyTransition #AI #DataCenters #CriticalMinerals #SulphuricAcid #MarketAnalysis
