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Energy Series A Founded 2021

EX-Fusion

EX-Fusion manufactures nuclear fusion reactors, developing laser-based inertial confinement fusion technology for commercial energy production. The company aims to achieve controlled nuclear fusion through high-power laser systems that compress and heat fuel targets to fusion conditions. Founded in 2021 and headquartered in Osaka, Japan, EX-Fusion has raised approximately $39.3M in Series A funding from investors…

📍 Osaka, Japan · Nuclear Energy,

Funding snapshot

Last roundSeries A
Amount$3M
Date14 October 2025
Total raised$39M
Team size16

About

EX-Fusion manufactures nuclear fusion reactors, developing laser-based inertial confinement fusion technology for commercial energy production. The company aims to achieve controlled nuclear fusion through high-power laser systems that compress and heat fuel targets to fusion conditions. Founded in 2021 and headquartered in Osaka, Japan, EX-Fusion has raised approximately $39.3M in Series A funding from investors including ANRI Solutions, Nissay Capital, Mitsubishi UFJ Capital, SMBC Venture Capital, and EQT. The company leverages expertise from Osaka University's laser fusion research programs, working to deliver clean, abundant energy through fusion technology. EX-Fusion is recognized as a minicorn and represents Japan's growing contribution to the global fusion energy race.

Business model

Nuclear Energy > Hardware Developer > Reactors > Nuclear Fusion > Magnetic > Hydrogen > Pulsed Powered

Institutional investors

ANRI Solutions Nissay Capital Delight Ventures MS & AD osaka-shoko shinkin bank Mitsubishi UFJ Capital SMBC Venture Capital EQT Osaka University ANRI Miyako Capital Kuril Islands Osaka University Venture Capital MPower Partners Kyoto Chuo Shinkin Bank

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