Here is a number that should be on the desk of every procurement director, every industrial minister, and every fund manager with exposure to energy or technology: six point five trillion dollars. That is the IEA’s estimate of the annual value of downstream production outside China that could be at risk if that country’s rare earth export controls — introduced in April 2025, expanded in October 2025, and delayed by one year in implementation — are fully applied. Not a rounding error. Six trillion dollars, more than the GDP of most countries, sitting one export-control decision away from disruption.
The new edition of the IEA’s Global Critical Minerals Outlook is worth reading in full, because it confirms a shift that has been building for years: the binding constraint on the energy transition is no longer the mine. It is the refinery. And the geography of refining is more concentrated than almost any industrial supply chain in the world.
Prices are already telling the story
Start with the market. After years of decline, critical mineral prices rebounded through 2025 and into 2026, and the moves are not gentle. Base metals — aluminium, copper, tin — rose by one-third between January 2025 and April 2026, with copper reaching record highs. Battery material prices recovered sharply from the 2023-24 downturn: lithium prices more than doubled on strong energy storage demand and constrained supply, while cobalt rose by around 130 percent, largely because of export restrictions imposed by the Democratic Republic of the Congo. And the strategic minor minerals — small markets, outsize roles — more than doubled, with tungsten prices surging sixfold.
Each of those numbers is a market in its own right, but together they tell one story: supply is tight, concentration is high, and policy is now a bigger price driver than geology. Export controls have created a sharp price divergence between Chinese domestic markets and the rest of the world. In Europe, gallium and heavy rare earths like dysprosium and terbium currently trade at around five times the Chinese domestic price, and germanium at almost three times. That is not a market anomaly. It is the price of exposure to a concentrated supplier, and it is being paid by whoever needs the material next.
The refinery, not the mine, is the chokepoint
The report’s most important structural finding is about where value chains actually bottleneck. Mining is distributed. Refining is not. Over the past two years, the leading refiners — Indonesia for nickel, China for the other key energy minerals — accounted for more than three-quarters of total growth in refined supply. In several markets, including manganese, nickel, and graphite, virtually all supply growth during the period came from the dominant supplier. The world can dig more ore almost anywhere. The world cannot refine it anywhere near as easily.
And the gap is not closing. Even with numerous projects being announced worldwide, investment remains concentrated in mining, while downstream stages lag. The IEA projects that planned rare earth refining capacity in 2035 would cover only about two-thirds of projected mine output, and planned magnet production capacity would reach just one-third of expected demand. In plain terms: the world is planning to dig more, but is not planning to process, and the pinch will be felt precisely at the processing stage.
The Middle East reminder
The conflict in the Middle East served as a live demonstration of what concentrated supply chains mean. Before the disruptions, the region supplied more than 10 percent of the aluminium for the European Union, Japan, South Korea, and Mexico, and just under 20 percent for the United States. It also produces one-quarter of the world’s sulphur — a critical feedstock for sulphuric acid, which is used to leach copper, nickel, and cobalt, and to produce rare earths and battery chemicals — and half of global seaborne sulphur trade passes through the Strait of Hormuz. Disruptions to those exports rippled outward into fertiliser prices, metals processing costs, and battery material value chains. Even helium production in Qatar, the world’s largest exporter, was disrupted, affecting semiconductor manufacturing and medical technology.
The lesson is not that the Middle East is irreplaceable. It is that a single choke point anywhere in a long chain can raise costs everywhere else, and the longer the chain, the more places there are to be squeezed. Critical mineral supply chains are the longest, most geographically concentrated chains in the industrial economy, and that makes them the most sensitive to exactly this kind of shock.
The six-trillion-dollar question
Which brings us back to the export control story. The IEA report is careful about the caveats: the controls were delayed by one year, implementation is uncertain, and the full effect would depend on how the world responds. But the arithmetic is stark. Rare earths are small in value share — they represent around 40 percent of permanent magnet costs but less than 1 percent of a vehicle’s total value — and yet the industries downstream of them are enormous. Critical minerals generally account for only a small share of final product costs: about one-quarter of battery cell costs, but only about 3 percent of the price of an average electric vehicle.
That asymmetry is the heart of the vulnerability. When a material is a tiny share of your product’s cost but a necessary ingredient, the supplier can raise its price enormously without bankrupting you — but it can also withhold it entirely, and then your product cannot be built at all. Cost share measures comfort. Supply share measures exposure. The two are not the same, and the industry has spent years staring at the first while ignoring the second.
What the numbers mean for buyers and builders
For a materials professional, the practical takeaway is that diversification is now an operating cost, not a strategy option. The good news buried in the report is that because critical minerals are a small share of final product costs, the cost of diversifying supply chains is absorbable: paying a premium for gallium from a second source, or for a rare earth supply chain outside the dominant supplier, raises end-product prices by fractions of a percent. The bad news is that diversification takes time — refineries take years to build and decades to finance — and the world is starting from a base where most of the processing capacity does not exist outside the concentrated supplier.
The rational play, then, is dual. Buyers should secure supply and build strategic inventories where they can. And policy should treat refining capacity as the critical infrastructure it is, funding it the way ports and power grids are funded, because that is what it has become: the physical constraint on the entire energy transition. The mining announcements are the easy part. The refining commitments are the hard part, and they are the part that is still missing.
The takeaway
The energy transition was once described as a story about physics — solar panels, batteries, and motors. The IEA report is a reminder that it is equally a story about geography: where the material is refined, who controls the processing, and how much of the world’s downstream industry sits on one side of an export decision. Six trillion dollars is the honest price of inattention to that geography.
Critical minerals have always been small in cost and outsize in consequence. What changed in 2026 is that the world finally noticed. The question is no longer whether supply chains will be reshaped. They are being reshaped now, under pressure. The only open question is whether the reshaping happens deliberately, by investment, or chaotically, by embargo. The numbers say the cost of the first path is manageable. The second path is priced in already.