Office of Nuclear Energy | US Department of Energy
@GovNuclear
@ENERGY’s home for nuclear energy research, demos, and deployment. RT/Mentions aren't endorsements.
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THE HEAT IS ON: @WECNuclear successfully completed criticality testing for its eVinci microreactor, reaching core temperatures upwards of 1,000°C as the company gathered valuable data on its performance.
Their transportable, heat-pipe-cooled reactor design runs on TRISO fuel and is designed to produce 5 megawatts of electricity on sites as small as two acres of land.
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The U.S. nuclear energy industry never quits. 🇺🇸
Happy Labor Day to all the workers who keep America’s most reliable source of electricity running around the clock, 24/7, 365.
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We're off to the races! 🏁 Read below to learn about @ENERGY's Office of Nuclear Energy and @NRICnuclear's Launch Pad selections. ⬇️
CRITICALITY NO. 5! 🕺
On August 5, 2026, at 9:19 PM EST, @Oklo Inc’s Groves test reactor achieved initial criticality at the company’s facility in Lockhart, Texas. It is the fifth nuclear test reactor to go critical under @ENERGY’s Reactor Pilot and Nuclear Energy Launch Pad programs.
Congratulations to Oklo Inc.!
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It’s real. It’s happening. Welcome to America’s golden age of nuclear energy. ⚛️
Secure, reliable, and affordable — nuclear energy’s golden era is here! 💫
THAT’S IT? This is what 20 years’ worth of spent nuclear fuel looks like safely stored at the former Maine Yankee nuclear plant.
The plant generated 119 billion kilowatt hours of reliable power from 1972-1996, which is enough to power half a million homes each year.
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