Trade Regulation Updates

US to Impose 15% Tariff on Polysilicon and Derivative Imports Beginning in December

August 7, 2026

In a proclamation delivered on August 6, 2026, the US government indicated its intention to implement a 15% tariff, under Section 232, on imports of polysilicon and its derivatives while establishing minimum import prices (MIP) for these products. 

The new tariffs will enter into force at 12:01 AM ET on December 4, 2026. 

On December 4, the MIP for these goods will be set at the following: 

  • $21 USD per kilogram for polysilicon 
  • $100 per kilogram for polysilicon ingots and wafers
  • $0.22 per watt for solar cells
  • $0.38 per watt for solar modules. 

The full breakdown of what goods will be affected by the new tariffs or MIP can be found on Annex 1 and Annex II of the proclamation, the complete text of which can be found here

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