X-Energy - Model Gen-IV -Xe-100 - High-Temperature Gas-Cooled Reactors
We’re focused on Gen-IV High-Temperature Gas-cooled Reactors (HTGR) as the technology of choice, with advantages in sustainability, economics, reliability and safety.
Xe-100 is a 75 MWe reactor that can be scaled into a ‘four-pack’ 300 MWe power plant—with our modular design, the scale can grow even larger as needed.
Our base model is 75 MWe
As a leading entry in a class of small modular reactors (SMRs) our design brings nuclear power within reach for countries, utilities & communities.
Deployment @ Point of Need
Our elegant and simple design maximizes the use of off-the-shelf components manufactured and shipped to site using existing road & rail.
Smart Design = Simplified Effort
A simple design & modularized components
Road deliverable modules allow us to reinvent the Nuclear plant delivery model. Module size & weight allows transportability using existing road & rail infrastructure, leading to scalability, timeline & cost control never before seen in nuclear energy.
With a simple design, meltdown-proof ‘walk-away’ safety, and the most robust encapsulated fuel, our approach is the safest and most secure of the Gen-IV approaches.
Our design team brings decades of experience
Our design team brings decades of experience from the HTGR pebble-bed design programs in Germany and South Africa, combined with veterans of the Advanced Gas Reactor program in the US and leading experts from the U.S. Department of Energy National Laboratories.
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220,000 Graphite Pebbles with TRISO Particle fuel
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High temperature tolerant graphite core structure
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ASME compliant reactor vessel, core barrel & steam generator
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Designed for a 60-year operational life
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Flexible application – electricity and/or process heat
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Base load or load following
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Online refueling (95% plant availability)
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High burn-up fuel cycle (160 GWd/tHM)
200 MW …Thermal Output
75 MW …Electric Output
750°C …Helium Temperature
7 MPa …Helium Pressure
565°C …Steam Temperature
16.5 MPa …Steam Pressure