Antares, BWXT in TRISO fuel procurement deal

Started by Marlin, Oct 29, 2026, 04:38

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trisoantares nuclearbwxt advanced fuelsmark-1

Marlin


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BWXT has already manufactured fuel for Antares (Image: BWXT)

Antares Nuclear has contracted BWXT Advanced Fuels to provide an initial tonne of high-assay low-enriched uranium TRISO fuel. The material will be fabricated in Virginia to power upcoming microreactors, including the Mark-1 electricity-producing unit. This agreement secures a domestic fabrication source for the advanced reactor developer as it prepares for commercial deployment.

QuoteThe commercial agreement covers an initial tonne of TRISO fuel for Antares Nuclear's microreactors, which could be increased as deployment requirements evolve to support Antares's advanced reactor programme. ;

The announcement comes shortly after the US Department of Energy approved the Nuclear Safety Design Agreement for Antares's first electricity-producing reactor, known as Mark-1.

Under the agreement with BWXT Advanced Fuels, the fuel will be fabricated from high-assay low-enriched uranium (HALEU) at BWXT's facility in Lynchburg, Virginia, on the fabrication line that made the fuel for Antares's Mark-0 reactor when it reached its criticality milestone earlier this year. The same line has also fabricated fuel for the US Department of War's Project Pele microreactor.

Read the full article at World Nuclear News:
https://world-nuclear-news.org/articles/antares-bwxt-in-triso-procurement-deal