The proposed measures, stemming from a national security investigation under Section 232, would impose a 15% tariff and minimum import prices on polysilicon and related solar products to strengthen US manufacturers against growing Chinese competition.

The Trump administration is expected to announce a 15% tariff and introduce minimum import prices on polysilicon and related solar products, including wafers, cells, and solar panels, following a national security investigation conducted under Section 232 of the Trade Expansion Act of 1962.

The proposed measures are designed to protect US manufacturers from increasing competition from Chinese imports by implementing a hybrid system that combines tariffs with minimum import prices.

Polysilicon, a key raw material used in the production of semiconductor chips and solar panels, is a critical component of the global solar manufacturing supply chain. If implemented, the measures could significantly reshape the US solar manufacturing industry as the administration continues to scale back federal support for renewable energy.