New Front Opens in U.S.-China Solar Trade Dispute

On July 13, 2026, the U.S. Department of Commerce initiated an anti-circumvention investigation into crystalline silicon photovoltaic cells and modules originating from China. The move came in response to a petition filed by a coalition of eight domestic solar manufacturers, aiming to determine whether Chinese producers are using third-country assembly to evade longstanding anti-dumping and countervailing duty orders.

Two Alleged Supply Chain Routes Under Scrutiny

The investigation will specifically examine the following two trade patterns described in the petition:

  • Route One: Chinese-produced parts are assembled into complete PV cells and modules in Ethiopia, with the finished products then exported directly to the United States as goods of Ethiopian origin.
  • Route Two: Chinese-produced cells are assembled in Ethiopia before being shipped to Vietnam for final module encapsulation. The completed modules are subsequently exported to the U.S. market labeled as products of Vietnam.

Both routes allegedly involve shifting the final processing stages of solar manufacturing overseas to alter the country-of-origin designation, thereby potentially bypassing tariffs specifically targeting Chinese goods.

An Escalation in a Long-Running Conflict

This anti-circumvention probe represents the latest development in a series of U.S. trade remedy actions against Chinese solar products. In 2024, the Commerce Department concluded its second sunset review of the existing anti-dumping and countervailing duty orders on these cells, deciding to keep the tariffs in place. The progression from sunset reviews to a circumvention investigation highlights ongoing efforts by U.S. industry to close perceived loopholes and maintain protection for domestic manufacturing.

Observers note that the petitioner list includes key U.S. producers across different solar technologies, suggesting broad-based support for trade enforcement within the domestic industry. The outcome of this case could significantly impact global solar supply chain strategies and investment flows beyond immediate tariff implications.