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Doug Bernauer
63 posts
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Doug Bernauer
@DougBernauer
Radiant CEO, mass produced portable nuclear reactors starting in 2026! Formerly 12 years SpaceX - Electrical and Systems, Grasshopper Rocket, Boring Co., Mars
El Segundo, CA
radiantnuclear.com
Joined March 2013
110
Following
9,335
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  • user avatar
    Doug Bernauer
    @DougBernauer
    Nov 21, 2024
    What four mass produced 1 MegaWatt nuclear reactors will look like at a customer site:
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    1.6M
  • user avatar
    Doug Bernauer
    @DougBernauer
    Apr 21, 2025
    Feast your eyes on two metric tons of West Virginia graphite that will be slowing down neutrons in our first nuclear reactor by next year! Baked at over 2500C by Amsted Graphite Materials, it’s the first reactor order of American-made, nuclear-grade, graphite in over a decade.
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    532K
  • user avatar
    Doug Bernauer
    @DougBernauer
    Nov 21, 2024
    .@elonmusk-No new nuclear reactor design has been licensed in over 50 years in the US. Compact nuclear enables Moon/Mars fuel production, in-space propulsion, and powers remote locations on earth. Our Govt is spending billions again without milestones. Will DOGE fix US nuclear?
    36K
  • user avatar
    Doug Bernauer
    @DougBernauer
    Dec 6, 2024
    Kaleidos is a 1MW gas cooled portable microreactor Radiant will mass produce. There are nearly 10 tons of graphite in a hefty stainless steel pressure vessel. Is it hard to build these quickly? No. See for yourself in a timelapse of our full scale passive cooling demo unit!
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    49K
  • user avatar
    Doug Bernauer
    @DougBernauer
    Nov 22, 2024
    Replying to @gearvr
    Test in 2026, Customer units in 2028!
    24K
  • user avatar
    Doug Bernauer
    @DougBernauer
    Nov 14, 2024
    We @RadiantNuclear are announcing our $100m Series C today. Our plan: - Test our new reactor design at @INL - Begin mass manufacturing reactors - Deliver 1MW reactors to critical areas across the globe Reach out if you'd like to join us and build a new atom splitting machine!
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    40K
  • user avatar
    Doug Bernauer
    @DougBernauer
    Dec 11, 2024
    Electric power generation in the US grew exponentially from 1950-1974, became linear 1970-2007, then flattened, with almost no increase in the last 17 years. Power creates Prosperity, the United States must grow again. Chart make you smart->
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    11K
  • user avatar
    Doug Bernauer
    @DougBernauer
    May 14, 2025
    Borne of Fire, the Strength to Contain Fission. - Over 6 tons of American Forged Nuclear Reactor Pressure Vessel from @ScotForge! Coming to @RadiantNuclear’s headquarters for reactor assembly later this year.
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    10K
  • user avatar
    Doug Bernauer
    @DougBernauer
    May 30, 2025
    America invented the nuclear industry, but it’s been stuck in a rut for decades. Next year, when @radiant flips the switch on the first new design of a U.S. reactor in 50 years, it’s more than just a new innovation – or the dawn of a new nuclear age – it's the resumption of
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    10K
  • user avatar
    Doug Bernauer
    @DougBernauer
    Feb 10, 2025
    Ski resorts are on low reliability areas of the electric grid and use backup generators to avoid stranding skiers. As soon as 2029, a resilient nuclear microreactor could carry you back up the hill, on a reliable and clean microgrid keeping the mountain air 100% fresh!⛷️🏂
    A Kaleidos 1MW nuclear microreactor with shielding inside a fence at a ski resort. (www.radiantnuclear.com)
    16K
  • user avatar
    Doug Bernauer
    @DougBernauer
    Apr 22, 2025
    Replying to @DWMcAliley1791
    They're called High Temperature Gas Reactors. Check out Ft St Vrain reactor
    6.2K
  • user avatar
    Doug Bernauer
    @DougBernauer
    Apr 22, 2025
    Replying to @meeralSnakbar
    Good points. The latest new graphite reactor went fully on grid in China in 2023(en.wikipedia.org/wiki/HTR-PM), so it is quite modern, just less common than water based reactors. The neat trick here is you can make meltdown proof fuel using graphite and other layers with TRISO fuel:
    en.wikipedia.org
    HTR-PM - Wikipedia
    5.3K
  • user avatar
    Doug Bernauer
    @DougBernauer
    Nov 22, 2024
    Replying to @cprudhon and @gearvr
    Probably not, first block units will go to customers who need 300kWe or more, and those in very remote regions, microgrids. I'd love to learn more about your power need. how many kW, how continuous? why can't you just do solar+batts for it?
    5.1K
  • user avatar
    Doug Bernauer
    @DougBernauer
    Aug 12, 2025
    Thank you @POTUS and @ENERGY for unleashing American Energy Dominance!
    user avatar
    Radiant
    @RadiantNuclear
    Aug 12, 2025
    We're honored to have been selected as a member of the Nuclear Reactor Pilot Program, and look forward to making history next year when we turn on our reactor!
    3.8K

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