Zephyr Fusion is building the first in-orbit fusion power source: a megawatt-class reactor enabling large-scale industry in space, at a fraction of the cost of equivalent solar. Founded by former physicists from Lawrence Livermore and Oak Ridge National Laboratories, Zephyr leverages decades of fusion research to deliver a compact magnetic confinement system designed to take advantage of the space environment.
Zephyr Fusion is a Y Combinator company in the Fall 2025 batch. Its directory entry describes it as: Powering tomorrow's industrial revolution in space. The founders listed are Edward Hinson (Founder), Galen Burke (Founder) (Y Combinator directory entry, November 7, 2025).
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New accelerator entry · 2025-11-07 · the record
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Zephyr Fusion is building the first in-orbit fusion power source: a megawatt-class reactor enabling large-scale industry in space, at a fraction of the cost of equivalent solar. Founded by former physicists from Lawrence Livermore and Oak Ridge National Laboratories, Zephyr leverages decades of fusion research to deliver a compact magnetic confinement system designed to take advantage of the space environment.
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