Market evolution: Polysilicon (CN 280461) — 2015–2025

Introduction

This report analyses the trade dynamics of high-purity silicon (polysilicon), classified under customs code 280461, for the European Union between 2015 and 2025. Over this decade, the EU polycrystalline silicon market underwent significant structural shifts. The bloc transitioned from a period of robust export growth to one characterised by declining volumes, rising import dependency for certain partners, and notable price volatility. This analysis, based on yearly trade data, identifies and explains the main observable trends in volumes, values, geographic flows, and market concentration.

I. A Structural Shift: The EU's Evolving Role as a Major Supplier and Declining Export Volumes

The EU’s trade in polysilicon shows a clear evolution from a period of high export activity towards a more consolidated, value-focused, yet lower-volume trade position.

The EU Remains a Dominant Net Exporter but with Drastically Reduced Volumes

Throughout the entire period, the European Union maintained a substantial trade surplus in polysilicon, indicating its role as a major global supplier. However, the scale of this trade shifted dramatically. EU export quantities fell from 52,092 tonnes in 2015 to 26,075 tonnes in 2025, a decline of 49.9%. Despite this sharp volume contraction, the total value of exports decreased less severely, falling by 28% to approximately €766 million. This divergence is explained by a significant rise in unit prices.

Rising Unit Prices Offset Declining Volumes in Export Value

While fewer tonnes were shipped, the average export price per tonne increased substantially, from €20,414 in 2015 to €29,373 in 2025, a rise of 43.9%. This price increase likely reflects a strategic shift towards higher-value products, sustained global demand from the solar and semiconductor sectors, and possibly increased production costs within the EU. The price peak was observed in 2022, averaging €31,135 per tonne.

German Exports Underpin the EU's Market Position

The concentration of export capacity within the EU is stark. Germany consistently accounted for the overwhelming majority of EU polysilicon exports. In 2025, German exports were valued at €738 million, representing over 96% of the total EU export value of €766 million (Exporters by Member State). This heavy reliance on a single member state highlights the specialised nature of polysilicon production within the bloc, centred on major German chemical companies.

II. Geographic Rebalancing: Shifts in Partner Dynamics and Emerging Trade Corridors

The decade saw significant reshuffling among the EU’s key trading partners for polysilicon, with some traditional relationships weakening and new corridors emerging.

Decline of Traditional Asian Partners in EU Exports

Several historically important Asian markets for EU polysilicon exports saw dramatic declines over the period. Exports to China fell from €525 million to €243 million (Partners for EU exports). The most extreme drop was to South Korea, which fell from €61 million in 2015 to just €4 million in 2025, a 93.3% decrease. This trend likely reflects the growth of domestic polysilicon production capacity in these countries and increased global competition.

The Rise of Vietnam as a Key Destination for EU Exports

In contrast to the declines in China and Korea, exports to Vietnam experienced explosive growth, increasing from a negligible €50,090 in 2015 to €72 million in 2025. This meteoric rise, representing a 143,680% increase, makes Vietnam the EU's second-largest export market by value. This shift suggests Vietnam has become a significant node in the global solar photovoltaic (PV) supply chain, absorbing high-purity silicon for further processing.

US Imports Surge While Traditional European Suppliers Retreat

On the import side, the EU’s sourcing underwent a major transformation. Imports from the United States surged, growing from €16 million to €92 million, a 479% increase. Conversely, imports from traditional European and Asian suppliers collapsed. Shipments from South Korea fell by 93%, from Japan by 92%, and from Norway by 99%. This rebalancing points to a stronger transatlantic trade link in the polysilicon sector, possibly driven by corporate ownership structures, tariff considerations, or supply chain diversification efforts.

The EU's Internal Market Shows Germany as the Primary Importer

Just as with exports, German industry is the primary gateway for polysilicon entering the EU. In 2025, Germany imported €100 million worth of the product, accounting for 80% of total EU imports. Other member states like the Netherlands (€10.8 million) played a minor, though growing, role (Importers by Member State).

III. Market Consolidation and Price Volatility: Concentration and Shock Events

The period was marked by increasing market concentration on the import side and pronounced price volatility, particularly linked to shocks in key partner economies.

Import Sources Became More Concentrated, Export Flows Diversified

Market concentration, measured by the Herfindahl-Hirschman Index (HHI), moved in opposite directions for imports and exports. The HHI for imports increased from 2,781 in 2015 to 5,599 in 2025, indicating the EU's import base became more reliant on fewer partners, notably the United States. In contrast, the HHI for exports decreased from 2,797 to 1,770, signifying a slight diversification in export destinations, with the rise of Vietnam partially offsetting declines elsewhere.

Significant Price Shocks Disrupted Trade with Major Partners

The data reveals notable price shocks that likely influenced trade flows. A major import price shock for Chinese-origin polysilicon centred in 2018 showed an abnormality score of 288 and a price shift of +562%. This could be linked to temporary anti-dumping duties or market tightness. Similarly, a price shock for imports from the US in 2020 and for EU exports to China in 2021 are identified. These events underscore the price sensitivity and geopolitical factors affecting this strategic material.

EU Production Volume Collapsed but Value Increased

Looking beyond trade, EU production volumes of polysilicon reported in the data fell sharply, from 162 million kg (162,000 tonnes) in 2015 to 60 million kg (60,000 tonnes) in 2025, a 62.9% decrease. Concurrently, the value of this production increased by 33.3% to €800 million. This strong inverse relationship between volume and value further reinforces the narrative of a shift towards higher-value, possibly higher-purity, output within the EU's domestic industry.

Conclusion

The EU polysilicon market between 2015 and 2025 underwent a fundamental transformation. While the bloc preserved its net exporter status, its export model shifted from high-volume shipments to higher-value, lower-volume trade. Geographic flows were dramatically rebalanced: exports pivoted from China and Korea towards Vietnam, while imports surged from the United States at the expense of traditional Asian suppliers. This restructuring occurred against a backdrop of rising price volatility and increasing import concentration. The concurrent collapse in reported production volumes, coupled with rising production value, suggests a European industry that may have exited some commodity-grade segments to focus on specialised, high-margin products. The future resilience of this market will depend on Europe's ability to maintain technological and value-added advantages amid intense global competition and ongoing supply chain reconfiguration.