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Conference Spotlight
2026 Nuclear Energy Conference & Expo (NECX)
August 24–27, 2026
Dallas, TX|Hilton Anatole
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Latest News
Antares achieves zero-power criticality at INL
Leveraging more than $140 million in private capital fundraising, over 322,000 square feet of operational manufacturing space, and multifaceted partnerships with the Departments of Energy and Defense, reactor start-up Antares has become the first company involved in the Reactor Pilot Program to achieve zero-power fueled criticality—a full month ahead of the July 4 deadline set by President Trump’s Executive Order 14301.
This milestone, announced yesterday, was achieved with the company’s Mark-0: a sodium heat-pipe-cooled, TRISO-fueled microreactor. The Mark-0 is a forerunner to the company’s flagship design, which it calls the R1. For Antares, this development represents a key validation of its reactor physics, control systems, and supply chain.
Technical Session|Radioisotope Power Systems
Tuesday, May 7, 2024|3:15–4:55PM MDT|Sweeney A
Session Chair:
Gabrielle Lee (LANL)
Alternate Chairs:
Timothy Schriener (Univ. New Mexico)
Session Organizer:
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Zeno Technology Development Program Overview
3:15–3:40PM MDT
J.R. Matthews (Zeno Power Systems)
Paper
Revival and Technology Transfer of 90SrTiO3 Production for Heat Source Applications
3:40–4:05PM MDT
Christofer E. Whiting (Univ. Dayton), Matthew O'Hara (PNNL), Stephen L. Gunderson (Univ. Dayton), Sergey Sinkov (PNNL), Chadwick D. Barklay (Univ. Dayton), Jeffrey Katalenich (PNNL), Brian Collins (PNNL), Jacob R. Matthews (Zeno Power Systems)
Radiation Modeling of Z1: Validation of a Novel Radioisotope System
4:05–4:30PM MDT
T.R. Riley (Zeno Power Systems), J.R. Matthews (Zeno Power Systems), M.T. Athon (PNNL), B.A. Collins (PNNL), K.L. Gervais (PNNL), J.A. Katalenich (PNNL), D.A. Koch (PNNL), M.K. Murphy (PNNL), M.J. O'Hara (PNNL), C.L. Painter (PNNL), B.D. Pierson (PNNL), S.H. Swenson (PNNL)
Radioisotope Power System Isotopes Review
4:30–4:55PM MDT
James Bunsen (Zeno Power Systems), Harsh S. Desai (Zeno Power Systems), Jacob Matthews (Zeno Power Systems), Patrick Snouffer (Zeno Power Systems)
