News and Articles

• A 15% tariff covers imported products made using polysilicon.
• Polysilicon is an ultra-pure form of silicon.
• Solar and semiconductor supply chains face direct sourcing exposure.
• Technical qualification limits rapid substitution in chip manufacturing.
• Contracts should define responsibility for tariff-related costs.

A new US trade measure covering products made with polysilicon is adding another cost variable to semiconductor and solar supply chains. The measure applies a 15% tariff to covered imports made using the ultra-pure form of silicon that is central to photovoltaic and semiconductor production.

For procurement teams, the impact extends beyond companies purchasing raw polysilicon. Manufacturers buying wafers, solar cells, modules or certain semiconductor inputs need to understand whether upstream material origin brings their purchases within the tariff rules.

Solar supply chains are highly exposed because polysilicon sits close to the start of photovoltaic manufacturing. Any additional landed cost at this stage can move through wafers, cells and modules before reaching project developers. Buyers need visibility into where their suppliers obtain silicon rather than looking only at the country where the finished module is assembled.

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Semiconductor sourcing presents a different problem. Ultra-pure silicon used in chip manufacturing must meet strict technical requirements, making rapid supplier changes difficult. Purity, defect performance and qualification procedures can limit the number of alternative suppliers available to a manufacturer.

Domestic producers could gain a stronger position when competing imports become more expensive. Buyers still need to confirm whether local suppliers have the required grades and enough capacity. Trade protection does not immediately create qualified production where it does not already exist.

Procurement contracts will also need clearer treatment of import duties. Agreements should specify which party carries tariff costs and how future changes in customs classification or trade policy affect the delivered price. Vague provisions can create disputes after orders have already been placed.

Supplier mapping can help companies identify indirect exposure. A manufacturer may not purchase polysilicon itself but may depend on components containing material sourced from a covered producer or country. Tier-one suppliers can be asked to provide upstream-origin information where the purchasing value justifies additional traceability.

The measure makes silicon origin a more important purchasing consideration for solar and semiconductor manufacturers. Buyers will need to combine customs analysis with technical supplier qualification rather than selecting alternatives based only on quoted material costs.

Companies with better visibility into upstream production, qualifying suppliers and tariff responsibility will have more options for managing the change.