Hyosung Heavy Industries is expanding its U.S. manufacturing footprint as rising electricity demand from AI data centers and an aging power grid drives orders for ultrahigh-voltage equipment. The company has established local production capabilities for 765-kilovolt transformers and circuit breakers rated at up to 800 kV. The expansion is centered on a transformer plant in Memphis, Tennessee, which the source identifies as the only U.S. facility capable of production, although the provided text ends before specifying the product in that description.