Trump Unveils New Tariffs and Price Floors on Chinese Solar, Chip Materials

U.S. President Donald Trump signed a proclamation on August 6, 2026, unveiling new trade measures targeting polysilicon and its derivatives to challenge China's dominant role in the global solar energy and semiconductor supply chains. The measures include a 15% tariff on imports of polysilicon and related products, alongside the establishment of a series of minimum import prices. According to the White House, these actions are designed to protect U.S. national security interests and strengthen domestic industries against what it describes as unfair competition from China.

Commerce Secretary Howard Lutnick stated in the Oval Office, "We're setting prices so that the Chinese can't dump anymore, and we're setting tariffs to say build it here." This executive order follows a Section 232 national security investigation initiated in July 2025 under the Trade Expansion Act of 1962. Polysilicon is a critical raw material for both semiconductor and solar manufacturing. The proclamation sets minimum import prices of $21 per kilogram for polysilicon, $100 per kilogram for polysilicon ingots and wafers, 22 cents per watt for solar cells, and 38 cents per watt for solar modules. Imports from the UK will be subject to a lower 10% tariff rate.

The new trade actions have been met with positive reactions from U.S. solar manufacturers. Shares of companies like First Solar Inc., the nation's largest solar maker, surged by as much as 8% in after-hours trading following the announcement. U.S. solar manufacturers, including T1 Energy and Hanwha QCells, lauded Trump's move as a "decisive win for advanced American manufacturing and investment in domestic energy supply chains." However, some analysts caution that these tariffs could raise the cost of solar modules, posing an additional challenge for renewable power developers.

The decision marks a new phase in the ongoing trade tensions between the United States and China. Previous U.S. administrations have also implemented various measures against Chinese trade practices. For instance, the Obama administration imposed anti-dumping tariffs on Chinese solar products in 2012, while Trump's first term saw tariffs that prompted Chinese manufacturers to relocate production to Southeast Asia. The Biden administration, through the Inflation Reduction Act (IRA), also incentivized Chinese firms to establish factories in the U.S. Nevertheless, by 2025, China maintained its dominance, controlling an estimated 95-98% of global wafer production, 85-92% of cell output, and 80-85% of panel assembly.

Market analysts suggest that the latest move by the Trump administration is part of a broader effort to rebuild the U.S. polysilicon industry and prevent China from "dumping" subsidized products onto the market. The Chinese embassy in Washington, however, criticized the U.S. for overstretching the concept of national security and unjustifiably suppressing Chinese companies, arguing that protectionism would not enhance U.S. competitiveness. The implications of this decision on global trade balances, particularly within the solar energy and semiconductor sectors, will be closely monitored in the coming period.