Doosan Begins Making Parts for X-energy Reactor
Doosan Enerbility is manufacturing key components for the first commercial small modular reactor developed by X-energy Inc.
Updated on Nov. 6, 2026 in Manufacturing
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Doosan Enerbility began expanding its U.S. operations on Thursday, starting manufacturing of key components for the first commercial small modular reactor (SMR) developed by X-energy Inc. The company agreed to supply steam generator tubes for X-energy's Xe-100 SMR in cooperation with Alleima AB.
Why it matters
The project places a Korean manufacturer inside the supply chain for an American advanced nuclear design, a sector where domestic production capacity is a central concern. The Xe-100 steam generator produces steam at temperatures of up to 565 degrees Celsius, and the component work is central to the reactor's operation.
The Xe-100 steam generator produces steam at temperatures of up to 565 degrees Celsius, a figure that defines the thermal demands placed on the supplied components. The source does not provide production volumes, contract value, or delivery schedules for the tubes.
The players
Doosan Enerbility
A South Korean heavy-equipment and power-generation manufacturer that has pursued expansion into advanced nuclear component supply.
X-energy Inc.
A U.S. advanced nuclear company developing the Xe-100 small modular reactor design.
Alleima AB
A Swedish specialty steel and high-temperature alloy producer supplying tubing for the project.
The details
Alleima AB will manufacture and supply high-temperature alloy tubes, which Doosan Enerbility will then process into helical coils using its proprietary technology. The helical coils are a key component of the Xe-100 steam generator.
Timeline
Thursday: Doosan Enerbility began manufacturing components for X-energy's SMR and expanding its U.S. operations.
Roadmap
The Xe-100 program, developed by X-energy Inc., is advancing toward its first commercial deployment through a supply chain that now includes Doosan Enerbility's component manufacturing. The partnership with Alleima AB shows how advanced reactor builders are assembling multinational suppliers for high-temperature components.
For U.S. households and businesses, the project is a step toward domestic small modular reactor capacity that could affect future electricity supply. The source does not indicate any immediate change to consumer pricing or availability.
The takeaway
Advanced reactor deployment depends on specialized manufacturing partnerships that cross national borders. Watching which suppliers secure contracts on programs like the Xe-100 offers a clear view of where the nuclear supply chain is building capacity.
Further reading
For more on industrial production and supply chains, see Manufacturing.
Source note: This article includes information reported by Pulse.
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