Training Example: X-energy – Review the Data, Give Your Score & Compare to the Real AI Evaluation

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Advanced Nuclear Energy
[H1] Solving for What’s Next
Our Mission

WHAT WE DO
[H2] Powering Progress with Solutions that Create Lasting Impact

Meeting global energy demand

01/04
[H2] Meeting Global Energy Demand
X-energy is a leading developer of advanced nuclear energy technology. In an era of unprecedented electricity demand growth, our reactors and fuel provide the scalable and clean solutions necessary to meet that demand.
Learn More

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Engineered from experience

02/04
[H2] Engineered from Experience
Our technology builds on decades of operational experience and research in both high-temperature gas reactors and TRISO fuel to deliver a new generation of nuclear energy tailored for the 21st century economy.
Learn More

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Unmatched breadth of applications

03/04
[H2] Unmatched Breadth of Applications
The modern economy demands more than just electricity. We are engineered to power the most energy-intensive sectors on Earth by delivering the high-temperature steam and constant power necessary for heavy industry and advanced technologies.

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Our world-leading team

04/04
[H2] Our World-Leading Team
We unite a team of technical pioneers and infrastructure experts to bridge the gap between complex science and commercial execution. Our experienced team is transforming visionary energy technology into a secure, global reality.
Learn More

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Our Technology
[H2] Reactors & Fuel

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[H3] A commercial-scale advanced SMR
Built on decades of proven technology to deliver a new standard in reliable energy.

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[H3] A nuclear fuel designed for safety
Described by U.S. DOE as “the most robust nuclear fuel on earth.”

[H2] Recent News
View All News

May 21, 2026

[H3] X-energy to Report First Quarter 2026 Results on June 4, 2026

Investors

May 18, 2026

[H3] NRC Issues Environmental Assessment with Finding of No Significant Impact for Dow and X-energy's Proposed Advanced Nuclear Project in Texas

Regulatory

Apr 30, 2026

[H3] LG&E and KU Collaborate with X-energy to Explore Nuclear Energy

Partnerships

Apr 23, 2026

[H3] X-energy Announces Pricing of Upsized Initial Public Offering

Investors

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[H1] The Foundation ofEnergy Reliability
An advanced small modular reactor engineered to deliver clean, safe, reliable power for the world’s most critical energy needs.
[H2] Engineered to power the next frontier of heavy industry and technology, the Xe-100 represents a fundamental shift in nuclear architecture, replacing complex mechanical backups with elegant, predictable laws of physics.

[H3] TRISO-X Fuel
Engineered to withstand the extreme

[H3] Helium Coolant
Gas-cooled for safe, stable heat transfer

[H3] Graphite Core
Proven nuclear-grade moderator

[H2] Heat & Steam
Thermal applications for heavy industry

[H2] Scalable
Four to twelve units per site

[H2] Load Following
Dynamic output to meet real-time demand

[H2] Siting Flexibility
Deployable near demand centers

[H2] Online Refueling
Continuous operation to maximize uptime

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[H2] Precision engineering for the next industrial frontier
Designed for high-stakes industrial applications, the Xe-100 pairs a high-temperature helium cycle with pebble-bed architecture to deliver superior thermal efficiency and unparalleled operational versatility.
80Mwe
Electric Output

200 Mwt
Thermal Output

750°C
Outlet Temperature

565°C
Steam Temperature

95%
Target Reliability

10-25%
Land Use vs. Large LWR

[H2] Inside the Xe-100
The Xe-100 converts nuclear energy into electricity or industrial steam through a defined sequence governed by material behavior and core physics. TRISO-X fuel, a high-temperature graphite core, and inert helium coolant are designed to operate together through predictable physical principles to produce cleaner, safer, and more reliable energy.
Each element of the system is engineered around inherent safety characteristics and high-temperature performance. Rather than relying on layers of complex mechanical systems, the Xe-100 is designed to use durable, proven materials, passive safety features, and innovative design principles to deliver both electricity and industrial-grade steam from a single standardized reactor design.
[H2] Nuclear Fission
Nuclear fission begins inside poppy-seed-sized uranium kernels encapsulated within multiple ceramic layers, forming TRISO fuel particles. These particles are embedded within a graphite matrix inside spherical fuel pebbles that circulate through the reactor core. As uranium atoms split, heat is released into the surrounding graphite structure.
[H2] Graphite Moderation
The graphite core performs two essential functions. It moderates neutrons to sustain a controlled chain reaction and conducts heat away from the fuel particles, distributing thermal energy evenly across the core. This high-temperature graphite maintains structural integrity under operating conditions, providing thermal stability and consistent reactor performance.
[H2] Helium Coolant
Pressurized helium circulates continuously through channels in the graphite core, absorbing thermal energy from the heated fuel and core structure. Helium remains chemically inert and single-phase at operating temperatures, enabling efficient heat transfer without phase change or material degradation. The heated gas exits the reactor pressure vessel carrying thermal energy toward the steam generator through a cross-duct.
[H2] Heat Exchange
Hot helium enters the steam generator where thermal energy transfers across sealed metal tubing into a separate water loop. The two systems remain physically isolated, ensuring that only heat—not radioactivity—moves into the secondary circuit. As water absorbs energy, it converts into high-temperature steam while cooling the helium which returns to the reactor to repeat the cycle.
[H2] Steam Generation
The steam generator produces steam at temperatures up to approximately 565°C. This steam can drive a turbine to generate electricity or be delivered directly to industrial facilities that require high-temperature process heat. A single Xe-100 module can provide both grid-scale power and industrial thermal energy from the same standardized reactor design.
[H2] Passive Safety
If core temperatures rise, inherent physical feedback reduces the rate of fission without external intervention. As materials expand, neutron interactions decrease, slowing the reaction naturally. This negative temperature response allows the reactor to stabilize on its own, maintaining safe conditions through fundamental passive safety properties rather than active mechanical systems.
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Intrinsic safety through physics

01/04
[H2] Intrinsic safety through physics
We designed the Xe-100 to rely on the laws of physics rather than complex mechanical backups. The reactor is self-regulating: if temperatures rise, the nuclear reaction naturally slows and stops. This intrinsic stability, anchored by our robust TRISO-X fuel, ensures safety before needing operator action or external power.

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Built on a legacy of innovation

02/04
[H2] Built on a legacy of innovation
Our leadership includes the original pioneers of High-Temperature Gas-cooled Reactor (HTGR) design. By refining more than 50 years of global research and operational experience, we have transformed a proven scientific concept into a reliable, scalable solution engineered for the modern industrial grid.

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Powered by TRISO-X technology

03/04
[H2] Powered by TRISO-X technology
Our proprietary fuel represents a breakthrough in material science, featuring a multi-layered ceramic coating that acts as a microscopic containment vault. This design is engineered to withstand extreme temperatures, ensuring the fuel remains stable and is physically incapable of melting under any scenario.

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Versatile applications for a new era

04/04
[H2] Versatile applications for a new era
Beyond traditional electricity generation, the Xe-100 provides a dual-stream energy solution by delivering high-temperature steam for deep industry. This unique capability makes it the ideal power source for the massive, 24/7 energy demands of data centers and heavy manufacturing.

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[H1] FAQs
[H2] What is the Xe-100 reactor?
The Xe-100 reactor is a small modular nuclear reactor developed by X-energy. It is based on High-Temperature Gas-cooled Reactor (HTGR) technology. X-energy’s nuclear technology represents the next generation of clean, safe, reliable, and zero-carbon nuclear energy.
[H2] What is the power output of the Xe-100 reactor?
The Xe-100 advanced small modular reactor is designed to produce 80 MW of electricity, or 200 MW thermal. However, it can be scaled up into a ‘four-pack’ configuration, allowing for a total power output of 320 MW.
[H2] What is the fuel used in the Xe-100 reactor?
Our reactors use TRISO particle fuel, a technology that has been developed and improved over 60 years. The DOE describes TRISO particles as the most robust nuclear fuel on the planet. We manufacture our own proprietary TRISO fuel, TRISO-X, through our wholly owned subsidiary, TRISO-X, LLC, to ensure supply and quality control.
[H2] What are the key safety features of the Xe-100 reactor?
The Xe-100 is designed to be intrinsically safe. With only four operator-controlled variables (control rods, helium circulator, feedwater pump, and turbine throttle valve), opportunities for operator error are drastically reduced, and automated operations allow for fewer personnel on site. Additionally, TRISO-X fuel is designed not to melt and can withstand extreme temperatures.
[H2] What is the operational life of the Xe-100 reactor?
The Xe-100 reactor is designed for a 60-year operational life, ensuring long-term sustainability and reliability.
[H2] Can the Xe-100 reactor provide both electricity and process heat?
Yes, the Xe-100 reactor is flexible in its application and can provide both electricity and process heat, making it suitable for various industrial processes.
[H2] Does the Xe-100 reactor support load following?
Yes, the Xe-100 has load-following capabilities, and is designed to ramp up or ramp down between 40% and full power in 12 minutes, faster than what is achievable by existing Generation III nuclear technologies. The Xe-100 has a versatile design that can be applied to several end markets, as well as to conventional power generation.
[H2] What is the transportation method for Xe-100 reactors?
The Xe-100 reactor’s modular design allows for road delivery of components, enabling transportation using existing road and rail infrastructure. This approach enhances scalability, control over timelines, and cost-effectiveness.
[H2] What qualifications and experience does the X-energy design team have?
Our design and engineering team brings decades of experience from the HTGR pebble-bed design programs in Germany and South Africa, combined with veterans of the Next Generation Nuclear Plant program in the United States and leading experts from the DOE National Laboratories.
[H2] What are the advantages of the Xe-100 reactor compared to other small modular reactors?
The Xe-100 reactor offers several advantages, including its safety features, economic viability, and advanced design. It maximizes the use of off-the-shelf components, simplifying efforts and reducing costs. The scalability and flexibility of the Xe-100 reactor make it accessible to countries, utilities, and communities, bringing nuclear power within reach.

[H2] Recent News
View All News

May 21, 2026

[H3] X-energy to Report First Quarter 2026 Results on June 4, 2026

Investors

May 18, 2026

[H3] NRC Issues Environmental Assessment with Finding of No Significant Impact for Dow and X-energy's Proposed Advanced Nuclear Project in Texas

Regulatory

Apr 30, 2026

[H3] LG&E and KU Collaborate with X-energy to Explore Nuclear Energy

Partnerships

Apr 23, 2026

[H3] X-energy Announces Pricing of Upsized Initial Public Offering

Investors

Our Mission
[H1] We Build Energy Solutions That Empower the Unprecedented

17
Years of innovation

11 GW
Commercial pipeline

144
Reactors

[H2] Fueling the Future
X-energy was founded to address the world’s most complex energy challenges. Pairing decades of proven high-temperature gas-cooled reactor research with modern manufacturing precision, our technology transforms visionary concepts into a scalable reality for the global market.

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[H2] Empowering the Unprecedented
The modern economy demands more than just electricity. We are engineered to sustainably power the most energy-intensive sectors on Earth by delivering the high-temperature steam and constant power necessary for heavy industry and the infrastructure of the AI revolution.

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[H2] Driving Innovation to Reality
We bridge the gap between science and large-scale commercial execution, pairing technical pioneers with global business leaders to deploy next-generation nuclear at full commercial scale.

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[H2] Powering Human Ambition
We believe energy should be a catalyst, not a constraint. Our mission is to provide the resilient, scalable power that allows human ingenuity to flourish, ensuring that the next century of growth is powered by clean, safe, and reliable energy.

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[H2] Uniting Bold Execution
The next era of industrial growth is a monumental human achievement that requires collective vision. We align with partners who share our enthusiasm for pushing the boundaries of what is possible, pairing our engineering diligence with bold execution to go further than any of us could alone.

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OUR TEAM
[H2] Best-in-class nuclear pioneers and industry leaders
Our mission is driven by a unique assembly of technical founders and global infrastructure experts. Together, we bridge the gap between complex science and large-scale commercial execution to deliver energy security for a new era.
View Leadership

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[H2] Recent News
View All News

May 21, 2026

[H3] X-energy to Report First Quarter 2026 Results on June 4, 2026

Investors

May 18, 2026

[H3] NRC Issues Environmental Assessment with Finding of No Significant Impact for Dow and X-energy's Proposed Advanced Nuclear Project in Texas

Regulatory

Apr 30, 2026

[H3] LG&E and KU Collaborate with X-energy to Explore Nuclear Energy

Partnerships

Apr 23, 2026

[H3] X-energy Announces Pricing of Upsized Initial Public Offering

Investors

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[H1] Decades of Science, Refined for Industry
From research to readiness, TRISO-X represents decades of proven science made practical — reliable fuel for reactors that will shape the future of clean, reliable energy.
[H2] TRISO-X is the keystone of our safety case, replacing massive external containment structures with microscopic engineering to simplify reactor design and maximize operational safety. TRISO-X is reshaping the industry with proven material science and fundamental physics.

[H3] Coated Particle Fuel
18,000 uranium kernels in each pebble

[H3] Precision Fabrication
Produced using patented processes

[H3] Multi Layered Safety
Ceramic layers trap fission products

[H2] Extreme Heat Tolerance
Remains stable above 1450C

[H2] HALEU Fuel
Enables higher efficiency and burnup

[H2] Graphite Matrix
Embedded in durable graphite pebbles

[H2] Proliferation Resistant
High burnup reduces usable isotopes

[H2] Safe Storage
Simplified spent fuel handling and storage

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[H2] Microscopic Containment for Next-Generation Safety
By embedding multi-layered containment at the particle level, TRISO-X delivers a level of thermal stability and energy density that enables decades of continuous, clean operation. This microscopic approach fundamentally reimagines nuclear safety by building containment directly into the fuel itself—four ceramic and carbon barrier layers that remain stable at 600°C above light water reactor temperatures.

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[H2] The Kernel
The heart of the particle is a high-assay uranium kernel that harnesses the power of fission more efficiently than conventional fuels.

[H2] Carbon Buffer Layer
The first layer, which consists of approximately 50% dense pyrocarbon and serves two primary functions: it provides void space to accommodate fission gases released from the kernel and creates distance between the kernel and the other coating layers to prevent concentrated damage in those layers from high-energy fission product recoils.

[H2] Pyrolytic Carbon (PyC) Layer
The PyC layer functions as an effective barrier to gasses and diffusion of many of the actinides and fission products. The IPyC layer is responsible for contributing to retention of fission gasses during irradiation and protecting the kernel from HCl vapor, which is a byproduct of the silicon carbide (SiC) layer deposition process. The OPyC layer also contributes to the retention of fission products and acts as a substrate to bond the graphite matrix.

[H2] Silicon Carbide (SiC)
The SiC layer critically serves as both the primary source of structural strength for the particle and the primary barrier to the release of fission products which are not retained within the kernel.

[H2] Zirconium Carbide (ZrC)
The ZrC layer provides fission product retention at higher temperatures and in extreme reducing environments. This refractory ceramic is often referred to as Nuclear Thermal Propulsion applications.
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Built on 60 Years of Science

01/03
[H2] Built on 60 Years of Science
TRISO-X is the commercial evolution of decades of Department of Energy research. By refining the proven science of the Advanced Gas Reactor program, we created a proprietary fuel that is historically validated and industrially scalable. This microscopic containment vault is engineered to withstand extreme temperatures.

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The Engine of the Xe-100

02/03
[H2] The Engine of the Xe-100
Our fuel is the foundation of the Xe-100 reactor’s performance, enabling the continuous online refueling that eliminates costly downtime. This integration allows for a significantly smaller safety perimeter, bringing power closer to the point of need.

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Unlocking a Vast Breadth of Applications

03/03
[H2] Unlocking a Vast Breadth of Applications
The robustness of TRISO-X allows nuclear technology to move into non-traditional markets. From powering heavy industry with high-temperature steam to propelling the next era of deep space exploration, our fuel is designed for the future of human progress.

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[H1] FAQs
[H2] What is TRISO-X fuel?
TRISO-X fuel is a proprietary version of tri-structural isotropic (TRISO) particle fuel developed by X-energy. It is a robust fuel designed to withstand high temperatures without melting and offers enhanced safety features for advanced nuclear reactors.
[H2] Why is TRISO-X fuel important?
TRISO-X fuel is crucial in ensuring the safety and reliability of advanced nuclear reactors. Its ability to withstand high temperatures without melting provides safety benefits and contributes to the overall performance of the reactor.
[H2] How is TRISO-X fuel manufactured?
X-energy manufactures TRISO-X fuel using a patent-protected manufacturing process. TRISO-X has assembled a team of fuel development and production experts who have refined the TRISO fuel fabrication process, resulting in higher yields, improved quality, and the generation of multiple patents.
[H2] What are the advantages of TRISO-X fuel?
TRISO-X fuel offers several advantages, including enhanced safety, improved economics, and flexibility in reactor design and operation. It eliminates the need for large and costly physical pressure-retaining containment structures since the TRISO-X particle itself acts as the containment vessel. The fuel’s ability to operate at high temperatures and utilize HALEU enables longer periods of reactor operation and reduces fuel costs.
[H2] How does TRISO-X fuel contribute to reactor safety?
TRISO-X fuel is safer and more advanced than any nuclear reactor fuel on the planet. It is designed to withstand high temperatures without melting, making it highly resistant to fuel failure and release of radioactive materials. The multiple barrier layers surrounding the uranium kernel provide stability and containment, enhancing safety and reducing the risk of accidents or meltdowns.
[H2] How does TRISO-X fuel impact reactor economics?
TRISO-X fuel utilizes high assay low enriched uranium (HALEU), which allows for longer periods of reactor operation compared to conventional fuel. We expect this to contribute to increased energy output and reduced fuel costs. X-energy’s proprietary TRISO manufacturing process also contributes to cost reduction.
[H2] How does TRISO-X fuel provide flexibility in reactor design?
The use of TRISO-X fuel enables the incorporation of passive safety systems and reduces the required footprint for the reactor. This flexibility allows for greater options in site selection and extends the applicability of advanced nuclear reactors to non-traditional nuclear markets.
[H2] What makes TRISO-X fuel superior to conventional fuel?
TRISO-X fuel offers superior safety characteristics compared to conventional fuel. Safety is built directly inside these reactors, with its robust design and ability to withstand high temperatures without melting. These features provide a higher level of safety and reduce the risk of fuel failure. The containment properties of TRISO-X fuel eliminate the need for large and costly physical pressure-retaining containment structures associated with conventional fuel.
[H2] How does TRISO-X fuel contribute to the future of nuclear energy?
TRISO-X fuel represents a significant step forward in nuclear fuel technology. Its enhanced safety, economic benefits, and flexibility in reactor design make it a promising solution for the advancement of advanced nuclear reactors. TRISO-X fuel contributes to the development of cleaner, more efficient, and safer nuclear energy options.

[H2] Recent News
View All News

May 21, 2026

[H3] X-energy to Report First Quarter 2026 Results on June 4, 2026

Investors

May 18, 2026

[H3] NRC Issues Environmental Assessment with Finding of No Significant Impact for Dow and X-energy's Proposed Advanced Nuclear Project in Texas

Regulatory

Apr 30, 2026

[H3] LG&E and KU Collaborate with X-energy to Explore Nuclear Energy

Partnerships

Apr 23, 2026

[H3] X-energy Announces Pricing of Upsized Initial Public Offering

Investors