Polysilicon is a highly purified form of silicon that serves as a critical raw material in the production of semiconductor chips and solar panels. China dominates global polysilicon production, making the United States heavily reliant on imports.
According to Reuters, the White House said the new measures are intended to boost domestic production of polysilicon, semiconductors, and solar products, strengthen U.S. supply chains, and reduce dependence on foreign suppliers in industries considered vital for artificial intelligence, energy, and national security.
For years, the U.S. solar industry has accused Chinese manufacturers of selling solar products at artificially low prices with the help of government subsidies. Some Chinese companies have also been accused of shifting production to third countries to avoid U.S. tariffs. China did not immediately respond to the latest announcement.
The United States currently has only two major polysilicon manufacturing facilities: Hemlock Semiconductor in Michigan and Wacker Chemie in Tennessee. Hemlock welcomed the new policy, saying it would encourage investment and expand domestic production capacity, while Wacker Chemie said it is assessing the potential impact of the new measures.
Industry experts note that the semiconductor sector depends on a strong solar industry because the majority of global polysilicon demand comes from solar panel manufacturing. According to the Semiconductor Industry Association, chip production accounts for only about 2.4% of worldwide polysilicon demand.
Although tax incentives introduced by Congress in 2022 boosted investment in the U.S. solar industry, much of that growth has been concentrated in solar panel assembly. American manufacturers still rely heavily on imports for key components such as solar wafers and solar cells, whose domestic production requires significant investment and time.
Several U.S. solar companies, including T1 Energy, First Solar, and Qcells, welcomed the administration's decision, calling it a positive step for domestic manufacturing. T1 Energy CEO Dan Barcelo said the policy would strengthen America's advanced manufacturing capabilities and local clean-energy supply chain. The company is investing $510 million in a new solar cell factory in Texas alongside its existing solar panel plant.
The White House also announced that the policy sets minimum import prices for polysilicon, ingots, wafers, solar cells, and solar panels. In addition, the Department of Commerce has been authorized to develop incentive programs for companies establishing polysilicon manufacturing and related production facilities in the United States.
Trade experts cautioned that because the new rules will not take effect until December, imports could temporarily increase as businesses rush to bring in products before the tariffs are implemented. At the same time, companies that purchase solar panels said the delayed implementation would give them time to adjust supply contracts and pricing arrangements.
