Antares raises $470M to build nuclear reactors for the US military; plus, Thea Energy lands $20M federal grant to build its magnets for fusion reactors

TechCrunch Startup News · Jul 28, 2026 · 7:02

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Antares has raised $470 million to build small modular reactors — 100 kW to 1 MW — for U.S. Air Force bases.

Also, fusion power startup Thea Energy snagged a $20 million award from ARPA-E to scale production of its high-temperature superconducting magnets.
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