Radiant

  • Conceptual rendering of Last Energy's PWR-20 reactor and Nuclear Island. Courtesy: Last Energy
    Trends

    Advanced Nuclear Developers Raise New Capital as 2025 Investment Hits Record Levels and Demonstrations Near

    Three advanced nuclear developers—Radiant, Last Energy, and ARC Clean Technology—announced the closing of major private funding rounds in mid-December 2025, signaling renewed investor momentum behind microreactors and small modular reactors (SMRs) as the companies move from design and licensing into pilot deployment and early commercialization. The announcements—which span a new $300-million-plus round at Radiant, an […]

  • The DOE’s National Reactor Innovation Center (NRIC) has since 2021 set out to refurbish EBR II (which operated from 1964 – 1994) as a new test bed for higher thermal power reactor projects. The Demonstration of Microreactor Experiments (DOME) test bed is a demonstration platform that is flexible enough to test four to five advanced reactors. Testing could begin in 2026. Source: DOE
    Nuclear

    Westinghouse, Radiant Selected for First Fueled Nuclear Microreactor Tests at INL’s DOME Facility

    Nuclear microreactors developed separately by Westinghouse and Radiant are poised to become the first fueled designs tested at the Demonstration of Microreactor Experiments (DOME) facility—the world’s first dedicated microreactor test bed slated to open at Idaho National Laboratory (INL) in early 2026. The first fueled experiment is expected to begin as early as spring 2026. […]

  • Kaleidos_Radiant_microreactor
    Nuclear

    Radiant Selected by DOE to Receive Fuel for First Kaleidos Reactor Test

    A company working to mass produce portable nuclear microreactors said its has accepted its selection by the U.S. Dept. of Energy (DOE) to receive high-assay low-enriched uranium (HALEU) fuel for the first test of Kaleidos, the group’s reactor design.

  • The DOE’s National Reactor Innovation Center (NRIC) has since 2021 set out to refurbish EBR II (which operated from 1964 – 1994) as a new test bed for higher thermal power reactor projects. The Demonstration of Microreactor Experiments (DOME) test bed is a demonstration platform that is flexible enough to test four to five advanced reactors. Testing could begin in 2026. Source: DOE
    Nuclear

    Westinghouse, Radiant Secure $5M for Microreactor Tests at INL’s Pioneering DOME Testbed

    Westinghouse and Radiant Industries have secured a $5 million Department of Energy (DOE) award to advance their microreactor designs for testing at the Demonstration of Microreactor Experiments (DOME) testbed at Idaho National Laboratory (INL)— the world’s first facility, specifically designed to support fueled reactor experiments for advanced nuclear technologies. The two companies, along with Ultra […]

  • plant site - BWRX-300
    Nuclear

    GE Hitachi Hits Milestone for SMR Design

    Another small modular reactor (SMR) design is moving closer to commercial operation after achieving a licensing milestone. GE Hitachi Nuclear Energy (GEH), which is designing the BWRX-300 SMR, on Dec. 1 said the U.S. Nuclear Regulatory Commission (NRC) has issued a final safety evaluation report for the first of several licensing topical reports (LTRs) submitted […]

  • Screen Shot 2020-09-20 at 10.57.17 AM
    Nuclear

    Former SpaceX Engineers Tout New Microreactor

    A California company is gathering funding for development of a portable nuclear microreactor, designed for use in areas where other forms of power generation are not practical. Radiant, founded by former SpaceX engineers, on Sept. 22 said it has raised $1.2 million from angel investors as it designs what the company calls a “clean energy […]