On April 21, 2025, the U. Department of Commerce (Commerce) announced its final affirmative determinations in the antidumping duty (AD) and countervailing duty (CVD) investigations of crystalline photovoltaic cells whether or not assembled into modules (solar cells) from. On April 21, 2025, the U. Cells and modules from Vietnam, Malaysia, Thailand and Cambodia are affected. Importers have already been posting cash. A letter from the American Alliance for Solar Manufacturing said the U. Trade Commission must act quickly to ensure tariff rulings are in place before a temporary gap creates an opportunity for solar components to be imported duty-free. solar manufacturers (Convalt Energy, First Solar, Meyer Burger, Mission Solar, Qcells, REC Silicon and Swift Solar), petitioned the U.