Zephyr Fusion (Founding)
Funding Details
Awarder
YCombinator
Date Award
November 7, 2025
Vertical
Industrials,Energy
Company Info
Founding Year
2025
Market
Industrials
Location
San Diego, CA, USA
Coinvestors
YCombinator
Company Description

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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