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HD Hyundai Heavy Industries achieves a key ITER milestone by completing four vacuum‑vessel sectors for the fusion reactor

Executive summary: HD Hyundai Heavy Industries completed assembly of four of nine vacuum vessel sectors for the ITER nuclear fusion project and celebrated the milestone at the Korea‑ITER Fusion Day in France on July 22, 2026. The achievement demonstrates Hyundai’s capacity for mega‑scale, high‑precision fabrication needed for fusion reactors, boosting confidence in the ITER timetable and potentially opening further contracts in the fusion supply chain.

Who is involved: HD Hyundai Heavy Industries, the ITER Organization, and French host institutions.

Likely next: Assembly of the remaining five sectors, integration testing, and preparation for ITER’s first plasma scheduled for the late 2020s.

The announcement shows that HD Hyundai Heavy Industries has met a significant manufacturing target for ITER, delivering four of the nine vacuum‑vessel sectors ahead of the project’s integration phase. This milestone was marked by the Korea‑ITER Fusion Day event in France, underscoring the company’s capability in mega‑scale, high‑precision fabrication. While the achievement advances the ITER schedule, it also positions Hyundai as a potential long‑term supplier for fusion‑related components.

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