The U.S. Commerce Department announced on Thursday a national security investigation into wind turbine and component imports, launched under Section 232 on August 13. The probe, recently made public, may lead to higher tariffs on these imports.

United States Department of Commerce logo and U.S. flag are seen in this illustration taken April 23, 2025.

The department recently included wind turbines in a list facing 50% tariffs on aluminum and steel content. Wood Mackenzie reports that two-thirds of a U.S. wind turbine’s value is imported, with 2023 imports valued at $1.7 billion, primarily from Europe (41%), Mexico (34%), and India (15%).

The Commerce Department seeks public comments on foreign supply chains and, as stated: “the impact of foreign government subsidies and trade practices on the competitiveness of the wind turbines and their parts and components industry.” Analyst Endri Lico noted U.S. self-sufficiency in nacelle assembly and tower supply but reliance on imports for blades, drivetrains, and electrical components.

This probe joins others examining imports like airplanes, semiconductors, and critical minerals. Rising costs from inflation and logistics have challenged the offshore wind sector. The investigation will assess energy security and domestic industry support.