Maritime Fusion (YC Winter 2025)

TL;DR: Maritime Fusion is a Y Combinator Winter 2025 startup Fusion reactors for ships, currently active with a team of 6.

Fusion reactors for ships

YC ID
30224
YC Batch
Winter 2025
Status
Active
Team size
6
Industry
Industrials, Energy
Tags
Fusion Energy, Hard Tech, Energy
YC profile
https://www.ycombinator.com/companies/maritime-fusion

Last verified:

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,…

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Frequently asked questions

Is Maritime Fusion a YC (Y Combinator) company?

Yes. Maritime Fusion was funded by Y Combinator in the Winter 2025 batch. Fusion reactors for ships

What does Maritime Fusion do?

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 comi…

What YC batch was Maritime Fusion in?

Maritime Fusion was part of Y Combinator's Winter 2025 batch.

How big is Maritime Fusion?

Maritime Fusion has a team of 6 people according to Y Combinator's directory.

Is Maritime Fusion still active?

Maritime Fusion is currently listed as Active with a team of 6 in Y Combinator's directory.

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