Zephyr Fusion
Zephyr Fusion is a YC Fall 2025 (F25) company. Based in San Diego, CA, USA. Team of 2.
About Zephyr Fusion
Summary
Zephyr Fusion builds a compact, megawatt-class magnetic confinement fusion reactor designed to operate in orbit, delivering power to space-based industries at a fraction of the cost of equivalent solar arrays. The reactor targets customers across microgravity manufacturing, in-space data centers, defense, transportation and propulsion, and human habitation, replacing the expensive, low-output solar infrastructure that currently constrains the space economy. The founders are fusion PhDs with hands-on reactor research experience at Oak Ridge National Laboratory and Lawrence Livermore National Laboratory.
From the Y Combinator listing
Powering tomorrow's industrial revolution in space
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.
Facts
- Industrials / Industrials -> Energy
- San Diego, CA, USA
- 2
- Active
- Early
Founders (2)
- Edward Hinson
- Galen Burke
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