IEA Warns Copper Supply Could Fall 25% Short by 2035. What It Means for Investors

The International Energy Agency's Global Critical Minerals Outlook 2026 projects a persistent 25% copper supply deficit by 2035 a structural gap that could define the next decade of the copper market and reshape opportunities across the mining sector.

The International Energy Agency has delivered one of its clearest warnings yet about the future of copper. In the Global Critical Minerals Outlook 2026, the IEA projects that supply from existing mines and announced projects will fall approximately 25% short of expected demand by 2035. While this represents a modest improvement from the 30% deficit forecast in the previous year’s report, the agency emphasizes that a significant structural shortfall is still expected to persist through the middle of the next decade. New projects advancing in the Democratic Republic of Congo and Zambia have helped narrow the gap, but not nearly enough to close it. For investors tracking copper mining stocks, Canadian copper stocks, and the broader energy-transition theme, the finding is consequential. A sustained copper supply deficit of this scale would likely support higher average prices over the long term, improve project economics, and increase the strategic value of high-quality, permitted copper assets in reliable jurisdictions.

The Scale of the Projected Copper Supply Gap

The IEA’s analysis compares projected primary copper requirements under its Stated Policies Scenario against the current pipeline of operating mines and sanctioned or announced projects. Even after incorporating recent project advancements, the agency concludes that the world remains on course for a material deficit in 2035. A 25% shortfall is not a minor imbalance. In a market the size of copper, it implies millions of tonnes of unmet demand each year if no additional supply is brought online beyond what is currently visible. Such a gap would typically be resolved through some combination of higher prices, demand destruction, accelerated recycling, or the rapid development of new mines — the last of which is constrained by long lead times. The IEA notes that copper faces particular challenges compared with many other critical minerals. Declining ore grades at existing operations mean more rock must be mined and processed for each tonne of metal produced. The rate of new major discoveries has slowed. Capital costs for greenfield projects have risen sharply. And the average time from discovery to production continues to stretch well beyond a decade in most jurisdictions.

Why Copper Demand Continues to Rise

The projected deficit is driven primarily by robust demand growth across several sectors at once. Electrification of transport remains a core driver. Electric vehicles use substantially more copper than conventional internal-combustion vehicles. Copper is required in the electric motor, battery connections, power electronics, onboard wiring, and the expanding network of charging stations. As EV penetration increases globally, the copper intensity of the transportation sector rises accordingly. Power infrastructure represents an even larger source of incremental demand in many long-term scenarios. Expanding electricity grids, integrating renewable generation, and modernizing transmission and distribution systems all require significant volumes of copper. The build-out of data centres to support artificial intelligence and cloud computing has added a further layer of demand that has grown more prominent in recent forecasts. Traditional end-uses in construction, consumer durables, and industrial equipment continue to provide a stable base of demand. When these conventional uses are combined with the structural growth from electrification and digital infrastructure, the overall trajectory for global copper demand remains firmly upward through 2035 and beyond.

Supply-Side Constraints in the Global Mining Industry

On the supply side, the global mining industry faces well-documented headwinds. Many of the world’s largest copper mines are mature and experiencing gradual grade decline. Replacing this production requires either major expansions or entirely new developments. Greenfield copper projects are capital-intensive and often face lengthy permitting processes, environmental reviews, community consultations, and infrastructure requirements. In some jurisdictions these timelines have lengthened rather than shortened. Even in mining-friendly regions, the combination of higher costs, stricter standards, and social-license expectations has raised the bar for new supply. Recycling will play an increasingly important role and can reduce the need for primary mine supply. However, the IEA’s figures already incorporate expected contributions from secondary sources. The remaining gap must still be filled by new mined production if demand projections materialize.

Implications for the Copper Price Forecast and Market Outlook

A persistent supply deficit of the magnitude outlined by the IEA would, all else equal, be expected to support higher real copper prices over the medium to long term. Markets typically respond to sustained shortages through price signals that incentivize new supply and moderate demand growth. This does not mean prices will rise in a straight line. Copper remains a cyclical commodity influenced by global manufacturing activity, Chinese demand, inventory levels, and macroeconomic conditions. Short-term price movements can diverge significantly from long-term fundamentals. Nevertheless, a structural deficit measured in the multi-million-tonne range creates a fundamentally tighter market backdrop than the industry has experienced in many previous cycles. Several mining companies and independent analysts have already begun framing the second half of the 2020s and the 2030s as a period of potential copper scarcity. The IEA’s latest numbers reinforce that narrative while also showing that incremental project progress can modestly improve the outlook — provided it continues.

What the Copper Shortage Means for Investors

For investors, the key questions are how the projected deficit will affect company earnings, project valuations, and equity returns across the copper mining sector. Higher sustained copper prices generally expand margins for existing producers, particularly those with lower all-in sustaining costs. Companies that can maintain or grow production in a deficit market often generate stronger free cash flow, which can support dividends, debt reduction, or reinvestment in growth. Development-stage projects and expansions become more economically robust when long-term price assumptions rise. Assets that were marginal at lower copper prices can move firmly into the money, improving the likelihood of financing and construction decisions. At the same time, not every copper-exposed company will benefit equally. Differences in jurisdiction, cost structure, balance-sheet strength, management execution, and project quality will continue to drive wide dispersion in returns. Investors focused on the best copper stocks to buy now or top copper mining companies typically emphasize these differentiated factors rather than simple commodity leverage.

The Canadian and TSX Copper Opportunity

Canada occupies an important position in the global copper landscape. The country hosts significant production, a pipeline of development projects, and a deep ecosystem of exploration companies listed primarily on the TSX and TSX Venture exchanges. Canadian copper stocks benefit from operating in a relatively stable regulatory environment with established mining law, infrastructure, and access to capital markets. In a world increasingly focused on security of supply and responsible sourcing, jurisdictional advantage has become a more prominent part of the investment thesis for many participants. Producers with operations in Canada or other low-risk jurisdictions may command valuation premiums relative to peers in higher-risk regions. Exploration and development companies that can advance projects through permitting in Canada may also find it easier to attract partners or financing if the broader copper supply gap intensifies.

Risks and Caveats

The IEA’s projection is a scenario based on stated policies and the current project pipeline. It is not a guarantee. Several factors could alter the outcome:

• Faster-than-expected project development or technological improvements in mining and processing could increase supply.

• Stronger recycling rates or material substitution could reduce primary demand growth.

• A prolonged global economic slowdown could temporarily suppress demand.

• Policy changes, trade restrictions, or resource nationalism could disrupt both supply and demand patterns.

Copper prices and mining equities are volatile. Even in a structurally bullish long-term environment, investors can experience significant drawdowns. Position sizing, time horizon, and thorough due diligence on individual companies remain essential.

Looking Ahead

The IEA’s warning of a 25% copper supply shortfall by 2035 serves as a clear signal that the energy transition and broader electrification trends are running ahead of the mining industry’s ability to deliver new supply on current trajectories. While the modest improvement from last year’s 30% estimate shows that progress is possible, the remaining gap is still substantial. For the global mining industry, the message is that more investment, faster project execution, and continued innovation will be required. For investors, the same message translates into a multi-year backdrop that is likely to remain supportive of well-positioned copper producers and developers — provided they can execute in an environment of rising costs, heightened scrutiny, and long development timelines. The copper market outlook through 2035 will be shaped by how effectively the industry responds to the IEA’s latest assessment. The 25% deficit figure is not a distant abstraction; it is a measurable gap that will influence capital allocation, project prioritization, and ultimately the prices producers receive and the returns investors earn.

Disclaimer: 

This article is for informational and educational purposes only. It does not constitute investment advice, a recommendation to buy, sell, or hold any copper mining stocks or related securities, or a prediction of future copper prices. Mining equities and commodity markets involve substantial risk of loss and significant volatility. The IEA’s projections are scenarios, not guarantees. Readers must conduct their own due diligence and consult qualified professional advisors. Past performance is not indicative of future results.