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Idaho National Laboratory received advanced TRISO fuel for Project Pele's mobile microreactor.

This milestone supports military operations with resilient power using durable TRISO fuel.

Critics highlight TRISO's high cost and reprocessing challenges despite its advanced capabilities.

BOISE, Idaho — The recent delivery of advanced nuclear fuel to the Idaho National Laboratory's Transient Reactor Test Facility marks a major milestone for Project Pele, a first-of-its-kind mobile microreactor prototype designed to provide resilient power for military operations.

The fuel, known as tri-structural isotropic, or TRISO, particle fuel, is made from uranium, carbon and oxygen, formed into a small kernel. This kernel is coated in multiple layers —

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