Critical minerals and the energy transition

Published 2026-09-05; updated 2026-09-05.

A critical mineral is one that a government judges essential to its economy or its security and vulnerable to interruption of supply. The lists are drawn up nationally and do not match, but the energy transition has put the same materials on most of them: copper and aluminum for wiring, grids and vehicle bodies; lithium, cobalt, nickel, manganese and graphite for batteries; and the rare earth elements for the permanent magnets in motors and generators. What makes them critical is rarely that the rock is scarce. It is that the steps between the rock and a usable metal are concentrated in very few places.

Why does electrification change which minerals matter?

An energy system built on combustion consumes fuel continuously and equipment slowly. An electrified system reverses that: it burns nothing in operation and instead embeds a large quantity of metal in the equipment itself, in wires, motors, transformers, cables and batteries. The demand created is therefore for stock rather than flow, front-loaded into the building of the asset, and it is dominated by conductive and electrochemical metals rather than by hydrocarbons.

That shift runs into three structural features of mining. The first is lead time: identifying, permitting, financing and building a large mine takes many years, so a change in demand cannot be matched by a change in supply within a price cycle. The second is grade decline: the average copper content of ore has fallen over decades, so more rock must be moved, more energy used and more water consumed for each tonne of metal. The third is that geology decides where the mine goes, and nothing else does.

Refining and smelting obey different rules, and this is where the concentration lies. Turning concentrate into metal is capital-intensive and, above all, electricity-intensive, so it settles where power is cheap and long-term policy is supportive. The result is a chain whose upstream is spread by nature and whose midstream is clustered by economics and policy. A disruption at a single smelting hub therefore reaches more of the world than a disruption at a single mine.

Two mechanisms work in the other direction. Substitution and thrifting reduce the metal used per unit when prices are high: aluminum replaces copper in some cabling, battery chemistries have moved toward less cobalt, and manufacturers redesign to use thinner conductors. And recycling adds a second source that grows as the installed stock ages; world refined copper production of 29 million tonnes in 2025 exceeded mine production of 23 million tonnes partly because scrap is refined alongside ore (USGS Mineral Commodity Summaries).

Copper’s two maps, from USGS Mineral Commodity Summaries estimates for 2025: the countries that dig it and the countries that turn it into metal are largely different.

A worked example

Copper is the clearest case because both halves of its chain are measured. World mine production was an estimated 23 million tonnes of contained copper in 2025, led by Chile with 5.3 million tonnes, or 23.0%, DR Congo (Democratic Republic of the Congo) with 3.2 million tonnes, or 13.9%, and Peru with 2.7 million tonnes, or 11.7% (USGS Mineral Commodity Summaries). World refined production in the same year was an estimated 29 million tonnes, of which China made 14 million tonnes, or 48.3%, against its own mine output of 1.8 million tonnes, or 7.8% of the world’s.

The trade data joins the two halves. In 2024, world exports of copper ores and concentrates under HS 2603 were worth $105.87 billion, with Chile supplying 29.3% and Peru 19.4%, while China took 62.5% of world imports and Japan 12.8% (CEPII BACI). Reserves are a third map again: of 980 million tonnes of identified copper reserves in 2025, Chile held 180 million tonnes, or 18.4%, Australia 100 million tonnes, Peru 85 million tonnes and DR Congo and Russia 80 million tonnes each (USGS Mineral Commodity Summaries). Mining, refining and reserves each produce a different ranking of the same metal.

Aluminum shows the same shape with the concentration further downstream. World primary smelter production was an estimated 74 million tonnes in 2025, of which China made 45 million tonnes, or 60.8%, ahead of India at 5.7% and Russia at 5.3%, while the largest bauxite reserves were in Guinea, with 7.4 billion tonnes, or 25.5% of the world’s 29 billion tonnes (USGS Mineral Commodity Summaries). The ore is in West Africa and Australia; the smelting is overwhelmingly in one country, because smelting is electricity in solid form.

Prices record how quickly the demand shift arrived and how badly it was matched. The London Metal Exchange copper cash price averaged $14,326 per tonne in August 2026, the highest monthly average in the World Bank series that begins in 1960, though below the April 1974 peak of about $19,774 per tonne once restated in 2024 dollars (World Bank Pink Sheet; BLS CPI via FRED). Aluminum averaged $3,251 per tonne in August 2026, against a record of $3,666 in May 2026 (World Bank Pink Sheet). The battery metals were more violent still: lithium carbonate averaged $156,809 per tonne in July 2026, up 102.7% from a year earlier but 68% below its April 2022 record of $490,008 per tonne, and cobalt averaged $55,873 per tonne against a March 2008 record of $95,023 (IMF Primary Commodity Prices).

That pattern, a demand shift meeting a supply chain that answers in years, is the definition of a cycle rather than a permanent shortage, and it is the same shape that earlier industrial build-outs produced. The mechanics of long cycles are in commodity supercycles, the inflation adjustment behind the 1974 comparison in nominal vs real prices, and the split between mining and processing in producing vs exporting vs processing. The underlying numbers are on the copper origins page and the copper price page.

Cite as: Commodity Origins, "Critical minerals and the energy transition", https://commodityorigins.com/learn/critical-minerals-energy-transition/ (CC BY 4.0).