Overview
- Hyosung says it developed the world's first 22.9kV, 1.05 MVA solid‑state transformer in 2022 and is now promoting that device as a candidate for urban distribution and large data centers.
- The company has expanded U.S. capacity, investing $300 million to enlarge an ultra‑high‑voltage transformer plant in Memphis and forming a joint venture with Quanta Services to build 72.5–800 kV circuit breakers in Pennsylvania.
- Hyosung plans demonstrations and commercial rollouts that pair SSTs with energy storage, STATCOM and HVDC systems to meet the tighter power control and availability needs of AI-driven data centers.
- Independent reporting and engineers warn that high‑voltage SSTs still face concrete hurdles—managing heat, maintaining insulation at 22.9 kV, controlling switch behavior and proving long‑term reliability in the field.
- Market research cited by Hyosung projects rapid SST growth and the company hopes early U.S. production will win contracts, but broad adoption will likely hinge on successful demonstrations and utility acceptance.