The Rare Earth Chokepoint: Supply Chain Risks and the Quest for Alternative Sources
China controls 60% of rare earth mining and 90% of processing — a strategic vulnerability exposed by export restrictions and geopolitical tensions. From seawater extraction to urban mining, new sourcing strategies are emerging to break this dependency.
In 2023, China imposed export controls on gallium and germanium — two critical semiconductor materials — sending shockwaves through global technology supply chains. It was a warning shot. China controls approximately 60% of rare earth mining, 90% of rare earth processing, and 75% of lithium-ion battery production. For the energy transition — which depends on neodymium magnets for wind turbines, lithium and cobalt for batteries, and platinum-group metals for hydrogen electrolysers — this concentration represents a single point of failure.
The geopolitical arithmetic is sobering. The Democratic Republic of Congo supplies 70% of the world's cobalt, much of it through artisanal mines with documented child labour. Australia and Chile dominate lithium production, but Chinese companies have acquired controlling stakes in mines on both continents. Russia is a major supplier of nickel and palladium. Every critical mineral for the energy transition flows through a small number of geopolitically unstable or strategically competitive jurisdictions.
Western nations have responded with critical mineral strategies — the US Inflation Reduction Act conditions EV subsidies on domestic or allied-nation mineral sourcing; the EU Critical Raw Materials Act sets recycling targets and domestic extraction goals; India's Critical Mineral Mission identifies 30 minerals for strategic stockpiling. Yet policy alone cannot create deposits that do not exist. The geological reality is that high-grade, easily extractable deposits of many critical minerals have already been claimed.
Alternative sourcing strategies are emerging along three axes. First, urban mining: recovering minerals from electronic waste, spent batteries, and industrial scrap. The concentration of gold in a tonne of circuit boards (200–250 grams) exceeds the concentration in a tonne of gold ore (5–10 grams). Second, deep-sea mining: polymetallic nodules on the ocean floor contain manganese, nickel, cobalt, and copper in commercially viable concentrations, though environmental concerns have stalled regulatory approval. Third, seawater extraction: the ocean contains an estimated 230 billion tonnes of dissolved minerals, dwarfing all terrestrial reserves.
Nordische Energy Systems' Sea Water Mining technology targets this third axis. By coupling mineral extraction from concentrated desalination brine with green hydrogen production, the system creates a distributed, scalable mineral supply that is not dependent on any single mine, country, or geological formation. Every coastline with a desalination plant becomes a potential mineral source. For island nations and water-stressed regions, this converts a daily waste management problem into a strategic resource.
The transition away from Chinese mineral dependence will not happen through any single technology or policy. It requires diversification across all three axes — recycling, new extraction methods, and alternative chemistries that avoid critical minerals altogether. Battery technologies like aluminium-graphene, which use earth-abundant materials with established domestic supply chains, eliminate the mineral security problem at the chemistry level rather than trying to solve it at the geopolitical level.
Supply chain resilience is not just a procurement concern. It is a national security imperative that will shape which nations lead — and which depend on others — in the clean energy economy.