Oklo’s Groves Research Reactor Achieves First Criticality

Oklo (NYSE: OKLO) Achieves First Criticality At Groves Reactor In Under A Year, Shares Surge

Oklo Inc. (NYSE: OKLO) has demonstrated it can deliver on its construction promises, announcing that its Groves Isotope Test Reactor in Lockhart, Texas, achieved first criticality on August 6, 2026. The milestone, defined as a controlled and self-sustaining nuclear chain reaction, was reached less than a year after the project broke ground on a previously undeveloped site. Oklo says the Groves reactor is the first project under the U.S. Departme…

Oklo’s Groves Research Reactor Achieves First Criticality

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