Advanced small modular reactors built on proven HTGR technology, delivering up to 950°C clean heat and electricity for industrial applications.
Powering the World Clean Heat and Electricity to Power a World of Industrial Applications The Name Reflects our Mission Projections by the U.S. Department of Energy show that annual global energy demand by the year 2050 will reach one billion times one trillion (zetta) units of energy (joules). Discover Our Story Discover Our Story Our name, ZettaJoule, reflects our commitment to being part of the solution for meeting this tremendous need by providing clean, reliable heat and power. ZettaJoule \ ˈze-tə-ˌjül \ One zettajoule equals 10²¹ joules, or one billion trillion joules. Modernizing Proven Technology We're the only Western advanced small modular reactor (SMR) company modernizing the established, publicly available technology of Japan's High Temperature Engineering Test Reactor, which is capable of producing industrial process heat up to 950 °C. Explore Our Technology Explore Our Technology Design Meets Resilience Our SMR facility will be a next-generation energy campus, defined by contemporary architectural elements - softened structural lines and sculpted façades that integrate thoughtfully with surrounding environments. Intelligent Systems Our modernized design leverages artificial intelligence and AI-based digital twins to streamline operations, cut costs, accelerate delivery, and minimize human error. ZJ REACTOR REACTOR TYPE HTGR GENERATING CAPACITY 30 MWTH HEAT OUTPUT UP TO 950 °C Unmatched Heat Capabilities Our ZJ advanced SMR will be designed to operate at temperatures up to 950 °C, which is approximately 600 °C higher than conventional water-cooled reactors, while also providing reliable power. Cities & Infrastructure Materials & Manufacturing Fuels & Upstream H₂ Hydrogen Modernizing Nuclear Technology Unlocking High-Temperature Systems Together, these capabilities unlock transformative energy solutions across key sectors, including oil and gas, steelmaking, aviation, data centers, e-fuels and other high-value uses. Oil & Gas Carbon-Free PZettaJoule | Proven Advanced Nuclear Technology
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