Four microreactor developers have achieved zero-power fuelled criticality under U.S. federal programs to fast-track advanced ...

The US Department of Energy's approval of the Nuclear Safety Design Agreement for Natura Resources' demonstration reactor is a key milestone towards first deployment of the advanced, liquid-fuelled ...

Deployable Energy’s Unity demonstration reactor has achieved criticality at Idaho National Laboratory (INL), making it the third Department of Energy (DOE)–authorized advanced reactor to reach the ...

Milestone validates reactor design and underscores focus on speed to market by meeting the Administration's July 4th goal in roughly 150 days of project execution IDAHO FALLS, Idaho, July 1, 2026 ...

BOISE, Idaho — U.S. Energy Secretary Chris Wright visited the Idaho National Laboratory on Thursday after the first new-age nuclear reactor to switch on in more than 40 years did so at INL earlier ...

Add Yahoo as a preferred source to see more of our stories on Google. U.S. Energy Secretary Chris Wright visited the Idaho National Laboratory on Thursday after the first new-age nuclear reactor to ...

A historic milestone was reached in Emery County Thursday afternoon, as Valar Atomics’ Ward 250 reactor completed a zero-power fueled criticality demonstration. The experiment marks the second ...

SALT LAKE CITY — A small modular nuclear reactor has achieved "criticality" in eastern Utah, the company behind the project announced. Valar Atomics said its reactor being tested at the San Rafael ...

Valar Atomics has achieved self-sustaining criticality and completed zero-power testing at Ward 250, its Gen IV tri-structural isotropic (TRISO)-fueled modular high-temperature gas reactor (HTGR), at ...