Fusion Fortnightly | 2026-09-15
Sep 15, 2026 • The Fusion Conclusion
EX-Fusion
Last updated
Fusion Machine Developer
Founding Year
2021
Locations
Osaka, Japan
San Francisco, California, United States
浜松市, Shizuoka, Japan
Company Founders
Kazuki Matsuo
Shinsuke Fujioka
Yoshitaka Mori
Leadership
Kazuki Matsuo, CEO
Yoshitaka Mori, CTO
Website
EX-Fusion is a laser fusion energy company developing a gigawatt-scale power plant based on high-repetition-rate, direct-drive fast ignition. Spun out of Osaka University, the team includes pioneers of the Fast Ignition Realization Experiment (FIREX) and holds world-leading records in fast ignition physics. In 2024, EX-Fusion became the first company to demonstrate continuous 10 Hz target engagement, one of the key engineering milestones for commercial inertial fusion. The company has raised over $60M and benefits from strong public–private support in Japan, where first-of-a-kind deployment is planned.
Provided by EX-Fusion
News
Japan Selects Four Industry-Led Projects to Support Fusion Power Demonstration in the 2030s
Sep 2, 2026 • Fusion Industry Association
Funding Received (Investment)
June 5, 2025
round
$18,100,000
July 6, 2023
roundSeed
$12,095,954
April 18, 2022
roundPre-seed
$1,027,000
AnnouncementPre-seed
Funding Received (Nondilutive)
August 31, 2026
programMETI Fusion Demonstration Subsidy
September 10, 2025
programINFUSE
FundersFusion Energy Sciences (FES)
