Zephyr Fusion
San Diego, United States · Founded 2025 · $500K raised
- Headquarters
- San Diego, California
- Founded
- 2025
- Website
- zephyrfusion.com
- Total Funding
- $500K
- Last Round
- SeedDec 2025
- Rounds
- 2
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
About
Zephyr Fusion develops compact, megawatt-class fusion reactors for in-orbit power, aiming to provide a lower-cost alternative to equivalent solar systems. Its target applications include microgravity manufacturing, data centers, defense, transport and propulsion, and human habitation. The company’s plasma physicists and fusion engineers are developing scalable fusion power systems for the space industry.
Summary
Zephyr Fusion is a Climate Tech company based in San Diego, United States, founded in 2025. It has raised $500K in total across 2 rounds, most recently a Seed round in Dec 2025. Investors include Alumni Ventures, Y Combinator and Pioneer Fund.
Funding History
Dec 2025
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Funding: Seed. Amounts, valuations, and investors where available.
Investors
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