Alleima Lands First X-energy Reactor Tubing Order
Swedish manufacturer Alleima will supply steam generator tubing for X-energy's first U.S. Xe-100 reactor deployment in Texas.
Updated on Nov. 4, 2026 in Nuclear
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Alleima has received its first order for steam generator tubing for X-energy's Xe-100 nuclear reactor, to be supplied to Doosan Enerbility. The tubing is for a proposed four-unit plant at an industrial facility in Texas supported by the U.S. Department of Energy's Advanced Reactor Demonstration Program.
Why it matters
The collaboration reflects growing demand for stable, fossil-free electricity driven by energy security, electrification, and industrial development. It marks a step toward the first Xe-100 deployment in the United States.
The announcement describes a proposed four-unit Xe-100 plant, but the extraction provides no output capacity, contract value, or schedule for the units. Project timing and final approval status are not stated.
The players
Alleima
A Swedish specialty steel and tubing manufacturer that produces high-performance tubes for demanding industrial and energy applications.
X-energy
A U.S. advanced nuclear company developing the Xe-100 high-temperature gas-cooled small modular reactor.
Doosan Enerbility
A South Korean heavy-industry company that manufactures power generation equipment, including nuclear reactor components.
The details
Alleima will manufacture steam generator tubing and supply it to Doosan Enerbility, which is building the components for X-energy's Xe-100. The Xe-100 is an advanced high-temperature reactor that uses helium rather than water as its coolant. In June 2026, Alleima also inaugurated its Tube Mill 2026 production facility in Sandviken, Sweden, where the tubing is produced.
Timeline
June 2026: Alleima inaugurated its Tube Mill 2026 production facility in Sandviken, Sweden.
Big Picture
The Texas Xe-100 plant is supported by the U.S. Department of Energy's Advanced Reactor Demonstration Program, which aims to bring advanced reactor designs toward commercial deployment. The supplier order moves that federally backed effort from design into the manufacturing of key components.
For U.S. residents, the project could eventually add advanced reactor capacity to the grid, but the extraction gives no timeline for power delivery. Near-term impact is limited to the industrial supply chain rather than household energy bills.
The takeaway
Advanced reactor projects depend on specialized component suppliers, so progress on steam generator tubing is a useful signal of a project's manufacturing readiness. Watch for further announcements on construction and licensing for the Texas plant.
Further reading
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