Europe Turns to Solvent Extraction to Secure Critical Minerals—But the Scale Gap Remains

Europe’s bid to secure critical minerals is entering a decisive new phase, moving beyond extraction toward solvent extraction and hydrometallurgical refining—the parts of the value chain that largely determine both industrial competitiveness and geopolitical influence. Across France, Estonia, and the United Kingdom, new processing facilities are beginning to reshape Europe’s industrial landscape, even as the overall challenge remains large.

Dependence on China Makes Processing Strategic

At present, Europe controls less than 5% of its own rare earth processing capacity, leaving it heavily dependent on imports. China still dominates nearly 90% of global refining, which has elevated solvent extraction plants into strategic assets comparable to other infrastructure tied directly to economic security.

Early Clusters in Estonia and France Point to a New Model

Europe’s current capabilities rely on a limited number of critical assets. In Sillamäe, Estonia, a rare earth separation facility processes imported materials into high-purity oxides used in magnets for electric vehicles and wind turbines. Nearby, a magnet manufacturing plant in Narva helps form one of Europe’s first vertically integrated clusters for critical minerals.

This integrated approach—linking refining, metallization, and manufacturing within regional ecosystems—is increasingly presented as Europe’s blueprint. Even individual sites could have outsized effects; the Narva magnet plant alone is expected to cover a meaningful share of EU demand for rare earth magnets.

France has emerged as Europe’s core hub for solvent extraction. Facilities such as those in La Rochelle are among the few outside China able to separate the full spectrum of rare earth elements, including neodymium and praseodymium—key inputs for high-performance magnets. Despite expansions, output remains limited: Europe’s production of rare earth oxides meets only a fraction of demand, while magnet capacity lags further behind.

New Projects Aim to Close the Gap by Building Downstream Capacity

To address this deficit, Europe is advancing a wave of projects designed to add modern solvent extraction infrastructure. One notable effort is Caremag in southern France, intended to produce heavy rare earth elements such as dysprosium and terbium for offshore wind and defense technologies. The project also integrates recycling feedstock and aligns with Europe’s goal of sourcing at least 25% of critical materials from recycled sources.

The United Kingdom is also developing the Saltend Rare Earth Refinery, expected to deliver significant volumes of NdPr oxide. The model mirrors China’s long-standing downstream strategy: importing raw materials from Africa while refining them in Europe.

Together, these initiatives represent Europe’s first wave of modern solvent extraction capacity—but even combined they fall short of future demand. Industry projections indicate Europe will require 10 to 15 additional processing facilities by 2035 to meet its strategic targets.

High Costs and Technical Complexity Keep Barriers Elevated

The investment case is strengthening as strategic urgency rises. Mid-sized solvent extraction plants typically require between €150 million and €500 million, while fully integrated complexes can exceed €1 billion. Expected returns range from 12% to 20%, depending on market conditions and commodity exposure.

Still, barriers remain high because solvent extraction is an extremely complex process that can involve hundreds of sequential stages to separate individual rare earth elements at industrial purity levels. Recovery rates can reach 85% to 95%, but energy consumption is significant—making efficiency and scale central determinants of competitiveness.

The Same Skills Are Moving Into Lithium Processing and Battery Recycling

The hydrometallurgical capabilities being built for rare earths are now spreading into other segments of the critical-minerals economy. Europe is expanding lithium processing capacity—particularly around the Upper Rhine Valley—where geothermal projects aim to produce large volumes of lithium hydroxide for batteries.

Battery recycling is also emerging as a parallel growth sector. Facilities across Europe are being developed to recover [[PRRS_LINK_4]], [[PRRS_LINK_5]], and [[PRRS_LINK_6]]from used batteries as recovery rates improve. While current volumes remain relatively small, the sector is scaling quickly in response to rising demand.

This convergence points toward a broader industrial direction: integrating critical mineral processing, recycling streams, and clean energy systems into unified ecosystems rather than treating each step in isolation.

Regional Clusters Are Forming—and Central/Eastern Europe Is Lagging

Geographically, Europe’s solvent extraction footprint is taking shape through distinct clusters. France leads chemical processing expertise; Estonia anchors the Baltic region with integrated refining; and the UK positions itself as a global processing hub linked to international supply chains. Germany is emerging as a center for lithium and battery-grade chemicals, reinforcing its role in Europe’s automotive and energy sectors.

One gap remains: significant capacity in Central and Eastern Europe has yet to materialize at scale. Despite strong engineering capabilities and competitive costs in countries along parts of the Danube corridor and in the Balkans, large-scale solvent extraction facilities have not been developed there—creating both vulnerability today and an opportunity for future investment.

A Shift Toward Diversification Defines Europe’s Next Phase

Control over processing capacity is increasingly becoming decisive in the global minerals race because it determines access to materials needed for electric mobility, renewable energy deployment, defense technologies—and ultimately affects economic competitiveness.

Europe’s strategy reflects a gradual but determined shift: investing in solvent extraction, hydrometallurgy, and recycling so it can reclaim parts of a value chain long dominated by external players. By 2030 it is expected to partially close gaps in light rare earths and battery materials; by 2035 up to 20 processing facilities could form part of a more resilient industrial system.

Full independence remains unlikely. The emphasis instead moves toward diversification—reducing reliance on single suppliers while strengthening control over key stages of production across multiple regions.

The Rise of Solvent Extraction as Industrial Sovereignty

The build-out underway suggests that solvent extraction infrastructure is no longer just another category of chemical plant—it functions as an instrument of economic sovereignty tied directly to securing materials for both the green transition and the digital economy. As investment accelerates alongside expanding technical capabilities, Europe appears focused on ending passive dependence on external processors while improving its long-term competitiveness in critical minerals.