31 March 2026

Silicon vs polysilicon: same element, very different supply chains

Key insights from this briefing

How has Chinese production capacity reshaped the polysilicon market?

Large-scale Chinese capacity, supported by low-cost energy in key production regions, has pushed solar-grade polysilicon prices down and placed pressure on higher-cost Western producers. Semiconductor-grade polysilicon remains a more specialised market because chipmakers require much tighter purity and qualification standards.

Why does polysilicon traceability matter for Western buyers?

Solar and semiconductor supply chains increasingly face provenance and forced-labour compliance requirements. Buyers may need to document where polysilicon and upstream feedstocks were produced, making traceability a procurement issue as well as a technical and price consideration.

Excerpt from this briefing's Industry Insight

Metallurgical silicon and polysilicon are chemically the same element but economically very different materials. Metallurgical-grade silicon at roughly 98 to 99% purity feeds aluminium and chemical markets, while solar- and semiconductor-grade polysilicon requires purification to nine nines or more. That enormous purity difference creates separate production technologies, prices and supply risks. The briefing highlighted how energy-intensive purification and concentrated Chinese capacity have reshaped solar economics, while electronic-grade material remains a critical foundation for every advanced chip and integrated circuit.

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