Antares Nuclear, Inc., a nuclear fission energy company developing compact microreactors for critical missions, today announced the execution of a binding multi-year fuel supply agreement (FSA) with Standard Nuclear (NYSE: STDN).
Under the FSA, Standard Nuclear will deliver up to eight MTUs of TRISO fuel to Antares through 2035. Antares will use the fuel to power its microreactors, which are engineered to provide safe, reliable, and resilient energy for fielded systems operating in the most demanding environments on Earth and in space, enabling critical mission capabilities for the Department of War and commercial customers where traditional power sources simply cannot.
“Antares exists to deliver nuclear power exactly where and when it is needed most, whether supporting stateside military installations, enabling persistent space operations, or powering mission-critical infrastructure far from the grid,” said Jordan Bramble, CEO and Co-founder of Antares. “Securing a long-term, industrial-scale supply of TRISO fuel from Standard Nuclear is a foundational step in moving our microreactors from demonstration to deployments. This partnership gives us the fuel certainty required to meet the strategic energy demands of our customers with the reliability and performance those missions require.”
The agreement builds on development work the companies have conducted together since 2025, including fuel specification, manufacturability, and production-path alignment. This locks in a secure, domestic supply of high-performance TRISO fuel for years to come. In doing so, it strengthens the U.S. advanced nuclear supply chain essential to national security and strategic energy independence.
“Antares is building reactors for some of the most demanding environments on earth and in space, and Standard Nuclear is proud to support Antares for their strategic energy applications,” said Kurt Terrani, CEO of Standard Nuclear. “We are working to scale our TRISO production capacity across identical facilities and continue to adhere to our customers’ needs. Now, as our customers move from demonstration toward commercial deployment, we are building the supply chain that advanced reactors need to meet their commercial needs and our nation’s energy and national security.”
About Antares
Antares is a nuclear fission energy company developing compact microreactors for defense and space applications, delivering safe, reliable power where traditional energy sources cannot. Founded in 2023 and backed by over $600 million in funding, Antares achieved initial criticality of its Mark-0 microreactor in 2026 under the DOE Reactor Pilot Program and is on track to produce electricity from an advanced reactor in 2027, with initial production deployments to U.S. military installations beginning in 2028. Antares operates facilities in Torrance, California; Idaho Falls, Idaho; and Aiken, South Carolina.
About Standard Nuclear
Standard Nuclear’s mission is to reliably deliver the essential building blocks of nuclear power at scale, enabling cost-effective, safe, and secure energy. Headquartered in Oak Ridge, Tennessee, the company is focused on the large-scale production of advanced nuclear fuel and power systems. As the only U.S. company with industrial-scale TRISO fuel fabrication facilities today, Standard Nuclear produces a robust, high-performance fuel essential to advanced nuclear reactors for terrestrial, national security, and space applications. For more information, visit https://www.standardnuclear.com.
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