
Fusion reactors for ships.

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.

Zephyr Fusion
zephyrfusion.com

Commonwealth Fusion Systems
cfs.energy

Realta Fusion
realtafusion.com

Pacific Fusion
pacificfusion.com

NearStar Fusion
nearstarfusion.com

Daivin!
daivin.tech

Fleetzero
fleetzero.com

Kyoto Fusioneering

Cortex Fusion Systems

ExoFusion

Artemis Technologies

Fusion Energy Solutions of Hawaii

Aerofuse
aero-fuse.com

Theseus
theseus.us

Haladir
haladir.com
Companies similar to Maritime Fusion include Zephyr Fusion, Commonwealth Fusion Systems, Realta Fusion and Pacific Fusion.
Maritime Fusion's headquarters is located in San Francisco, CA, US.
Maritime Fusion's most recent funding round was for $500k (USD) in January 2025.
As of Jan 1, 2025, Maritime Fusion has raised a total of $500k (USD).