U.S. Imposes Minimum Prices and 15% Tariff on Polysilicon Imports Under Section 232

WASHINGTON — August 10, 2026— The United States has unveiled a sweeping trade action on imported polysilicon and related solar products, combining aminimum import price mechanismwith anadditional 15 percent ad valorem tariff, effective December 4, 2026.

The executive order, signed on August 6 under Section 232 of the Trade Expansion Act of 1962, sets a price floor for polysilicon and downstream products. Imports priced below the following thresholds will be effectively barred from entry:

· Polysilicon: $21 per kilogram

· Polysilicon ingots and wafers: $100 per kilogram

· Solar cells: $0.22 per watt

· Solar modules: $0.38 per watt

In addition to the price floor, the order imposes a 15 percent tariff on polysilicon, ingots, wafers, cells, and modules. The measure aims to shield domestic producers, notably Hemlock Semiconductor, from what the administration describes as "market-distorting" overcapacity and pricing practices, particularly from China, which currently accounts for roughly 80 percent of global solar-grade polysilicon capacity.

Strategic and Supply-Chain Implications

While solar applications dominate polysilicon demand, U.S. officials have also framed the action as a long-term supply-chain security move. Although semiconductor-grade polysilicon represents only about 2.4 percent of global demand, the administration views it as a critical node in reducing reliance on Chinese upstream materials for advanced chips.

The order includes a "Reshore America" incentive pathway, authorizing the Department of Commerce to grant tariff exemptions on certain imported equipment if companies commit to building or expanding U.S. production facilities by January 20, 2029.

Limited Immediate Impact on Chinese Module Exports – But Upstream Pressure Mounts

Industry analysts note that the new restrictions will have limited direct impact on finished Chinese solar modules entering the U.S., as those products are already subject to existing anti-dumping, countervailing duties, and the Uyghur Forced Labor Prevention Act (UFLPA), which has effectively blocked most direct shipments.

However, the price floor directly undermines Chinese cost competitiveness. Domestic Chinese polysilicon prices have long traded below $21/kg, meaning the measure closes the door to low-cost upstream supply through indirect routes, including from Chinese-owned factories in Southeast Asia. Orders for polysilicon and wafer exports to the U.S. from these offshore facilities are expected to weaken.

Industry Response and Strategic Shifts

The four-month grace period before enforcement gives global supply-chain players a brief window to adjust contracts and logistics. Longer-term, the policy is expected to accelerate a strategic fork for Chinese and Asian manufacturers:

· Invest in U.S. production to qualify for market access, despite significantly higher labor, construction, and operating costs; or

· Diversify into alternative markets, particularly Europe, the Middle East, and emerging solar economies, to reduce dependence on U.S. demand.

The order has drawn mixed reactions. U.S. domestic producers have welcomed the protection, while U.S. solar installers and project developers warn that higher input costs could slow renewable-energy deployment and raise consumer prices.

The Commerce Department is expected to issue detailed implementation rules in the coming weeks. Stakeholders have until late November to seek exemptions under the "Reshore America" provision.