Overview
- TerraPower signed a supply framework with HD Hyundai and a tripartite memorandum with HD Hyundai and Hyundai Engineering & Construction on May 20, 2026 to coordinate manufacture, construction and delivery of Natrium plants.
- HD Hyundai Heavy Industries was named the preferred manufacturer for Natrium Reactor Enclosure System components to create a scalable supply chain aimed at moving from first‑of‑a‑kind (FOAK) to Nth‑of‑a‑kind (NOAK) serial production.
- The agreements cover design, manufacturing, supply chain, engineering‑procurement‑construction planning and commercial delivery structures to support multiple units and fleet buildout.
- Natrium pairs a 345 MW sodium‑cooled fast reactor with a molten‑salt energy storage system that can boost output to 500 MW, and the first U.S. demonstration under the DOE ARDP remains targeted for completion in 2030.
- By securing heavy‑fabrication capacity and coordinated EPC partners, the deals aim to lower unit costs, speed deployment and create industrial work in shipbuilding and heavy fabrication, while next steps include detailed serial‑production planning, financing and regulatory approvals.