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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|Panel|Sponsored by RPD
Tuesday, November 17, 2020|12:00–2:10PM EST
Session Chair:
Robert Hill (ANL)
Session Organizer:
Alternate Chair:
Tim Beville (DOE)
Staff Producer:
Julie Bry (American Nuclear Society)
A new domestic Program to support demonstrations of advanced reactor technologies has been initiated by DOE. Recently, two cost-share projects for near-term reactor demonstrations were announced. At this session, TerraPower and XEnergy will outline demonstration plans for their advanced reactor concepts.
Tim Beville
DOE
Darren Gale
X-energy
Tara Neider
TerraPower
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