The U.S. Commerce Department has launched a Section 232 national security investigation into imports of wind turbines and related parts, according to a notice published in the Federal Register on 21 August. The probe, which officially opened on 13 August, could pave the way for tariffs on top of the 50 % duty the administration already plans to apply to the steel and aluminum content of the equipment. Commerce is seeking public comment on the role of foreign supply chains, government subsidies and alleged predatory trade practices in the wind-turbine industry. Energy consultancy Wood Mackenzie estimates that roughly two-thirds of a typical U.S. turbine’s value is imported. U.S. purchases of wind-equipment totaled about $1.7 billion in 2023, the lowest level in a decade, with Europe supplying 41 % of those imports, Mexico 34 % and India 15 %. President Donald Trump has repeatedly criticized renewable power and in January suspended new offshore-wind licenses. A decision under Section 232 could further raise costs for a domestic wind sector already grappling with inflation, supply-chain bottlenecks and policy uncertainty.