### [2026-06-5](/feed/2026/06/5/index.md)

##### United States Department of Energy
# The United States Department of Energy announces that a nuclear microreactor developed by a private company has reached "criticality" for the first time under a program to develop the U.S. nuclear industry by the second Trump administration. 




### Sources:

1. [PBS](https://www.pbs.org/newshour/nation/energy-department-says-advanced-nuclear-reactor-first-to-reach-critical-milestone)

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