Maritime Fusion
Fusion reactors for ships
Based based in San Francisco, CA, USA, Maritime Fusion works in industrials.
Profile
Maritime Fusion is building fusion reactors for ships and off grid energy markets. En route on this endeavor we’re commercializing High Temperature Superconducting (HTS) cable technology for power distribution while advancing the physics basis of our HTS tokamak to decarbonize global shipping.
Breakeven fusion is coming soon, but the first-of-a-kind (FOAK) reactors will be costly, high maintenance, and have low capacity factors, leading to 5–10x higher electricity cost on the grid. Maritime Fusion is pursuing the most widely accepted approach to fusion, the tokamak, but specifically designed for the marine environment where the challenges that arise between breakeven and a commercially viable energy source are alleviated. The market we're targeting requires 15x less power, lower up-time, and costs the same as alternative fuels but without any emissions. Since fusion does not use highly radioactive fuels or materials – unlike fission – we sidestep the vast majority of regulatory challenges and safety risks associated with nuclear energy. Our team brings over a decade of industry and research experience in plasma physics, nuclear engineering, and electrical engineering with backgrounds at SpaceX, Tesla, Columbia University, and University of Pennsylvania.
The company sits in the industrials segment, where it competes on its core product or service.
San Francisco, CA, USA is where the company is located.
Its current recorded stage is Winter 2025.
Its team size is recorded as 6 employees.
Directory analysis
Maritime Fusion is developing fusion reactors tailored for marine vessels and off‑grid energy applications. The company also commercializes high‑temperature superconducting (HTS) cable technology to improve power distribution. Its goal is to decarbonize global shipping by deploying a tokamak‑based fusion system that operates with lower power requirements and is suited to the marine environment.
Positioning: Maritime Fusion targets a niche market of shipping and offshore energy where power density and reliability are critical, positioning itself as a pioneer in marine‑specific fusion technology. The company’s approach addresses the high cost and low capacity factors of early fusion reactors by focusing on reduced power needs and specialized design.
Note: Maritime Fusion is a small startup with six employees based in San Francisco.
Auto-generated directory analysis from public data · updated 9 Oct 2026. Informational only, not investment advice.
| Sector | Industrials |
|---|---|
| Headquarters | San Francisco, CA, USA |
| Country | USA |
| Employees | 6 |
| Stage | Winter 2025 |
Website: maritimefusion.com
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