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Dec 2025External analysis flags major technical risk: orbital fusion performance remains unproven, and the path to a Q>1 or flight-relevant prototype likely needs much larger follow-on capital.
SourcePowering tomorrow's industrial revolution in space
Company research
Public company, workplace, funding, and market signals
Updated Jul 29, 2026
Overview
Zephyr Fusion is an early-stage San Diego-based energy technology startup building compact megawatt-class fusion reactors for space, aiming to power an orbital industrial economy with HTS-magnet and dipole-confinement technology.
Primary product
Megawatt-class in-orbit fusion power source / reactor
Founded
2025
Headquarters
San Diego, California, United States
Team size
1-10
Work style
Onsite
Industry
Energy Technology
Sub-industry
Fusion energy for space power
Offices
Open Positions
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