ZettaJoule's Advanced Nuclear Technology
Our advanced SMR technology builds on decades of proven, safety-tested operations at the HTTR plant in Japan, which has operated since 1998.
We are modernizing its design to maximize efficiency, lower costs, and power a wide range of applications.
The ZJ Reactor
Our 30 MWth advanced small modular reactor is designed to operate at temperatures up to 950 °C and provide uninterrupted zero-carbon power for next-generation industrial and tech applications.
Engineered for the Highest Performance Standards
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Key Stats
HTGR
30 MWth
Up to 950 °C
30m x 30m
Inherently Safe
TRISO
On-demand module deployment
TRISO Particles
TRISO fuel can endure temperatures far beyond conventional fuels without melting and poses a low proliferation risk.
Graphite
Graphite slows down neutrons and serves as heat-resistant structural material, contributing to core stability even at extremely elevated temperatures.
Helium
Helium is used as the reactor’s primary coolant because it does not react with core materials, remaining chemically inert and non-radioactive.
The Most Robust
Fuel on Earth
TRISO fuel consists of uranium particles individually encapsulated in multiple protective layers of pyrolytic carbon and silicon carbide. Capable of retaining fission products at temperatures up to 1600 °C, TRISO is considered “the most robust nuclear fuel on Earth” by the U.S. Department of Energy.
The ZJ Reactor
We are harnessing artificial intelligence and the use of AI-based digital twins of our reactor to reduce costs and accelerate the delivery of advanced small modular reactors by maximizing efficiency and minimizing human errors.
Real-Time Updates
We have the ability to update data in real time - ensuring that construction and modifications align precisely with plant design specifications, reducing the risk of costly errors and project delays.
Streamlined Logistics
We use AI tools to analyze complex multi-source logistics data to improve supply chain management and reduce scheduling miscalculations – resulting in time and cost savings.
Predictive Maintenance
Once our SMRs are operational, AI predictive maintenance will analyze data from sensors to detect issues, trigger alerts and schedule maintenance faster and more accurately than humanly possible using conventional non-AI methods.
Foundational Safety
Demonstrated in Testing
Safety tests successfully completed at the HTTR provide a risk-mitigated safety foundation for ZettaJoule’s advanced small modular reactor.
Fully Modular,
Fast to Deploy
Our advanced nuclear technology can be deployed as single or multiple modules, giving customers flexibility to scale with demand. Modular construction also enables shorter build times and faster deployment than traditional nuclear projects.
Find the Right Solutions for You
Common Questions
Our initial advanced SMRs will deliver 30 MWth with future designs scaling to 600 MWth.
Our 30 MWth advanced SMR plants will be approximately 30 meters by 30 meters (~33 yards by 33 yards) – sufficiently compact for placement close to industrial or commercial operations and in remote locations.
Given its inherent safety, the Emergency Planning Zone (EPZ) could be contained entirely within the site’s security-fenced exclusion area, with a radius of approximately 250 meters (~273 yards).
Our ZJ reactor will be graphite-moderated and helium-cooled. It will use TRISO fuel consisting of uranium particles individually encapsulated in multiple protective layers of pyrocarbon and silicon carbide.
As stated by the U.S. Department of Energy, “TRISO particles cannot melt in a commercial high-temperature reactor and can withstand extreme temperatures well beyond the threshold of current nuclear fuels.”
Additionally, TRISO fuel presents a low proliferation risk due to its robust encapsulation and dispersed fuel form, making it unsuitable for weapons-grade material production.
