Fusion for the Future

Kyoto Fusioneering is a privately held technology start-up founded in 2019, with its headquarters in Kyoto, Japan. The company is focused on developing advanced technologies for commercial fusion reactors, including gyrotron systems, tritium fuel cycle technologies, and breeding blankets for tritium production and power generation. The company is focused on innovative solutions that are simultaneously high-performance and commercially viable. Supporting both public and private fusion developers around the world, the company will accelerate the realization of fusion as the ultimate energy source for humankind.


A fusion reactor is said to be like “a Sun on Earth”. With this potential comes great challenges. Like in the sun, the components in the fusion power core will be exposed to extreme conditions – high temperature and power loading from the neutrons and high energy particles. We are developing key technologies that not only withstand these conditions, but can deliver high performance at the same time. These include our high-power, high-frequency microwave gyrotrons for plasma heating; advanced blankets for high-temperature extraction using silicon carbide, including our SCYLLA© design; advanced divertor systems; and exhaust pumps for recovery and recycling of unburned fuel. As well as developing advanced hardware for customers around the world, we are also focused on providing expert support in power core engineering and design. Kyoto Fusioneering will contribute to global fusion reactor projects by supporting efforts from the design stage and through to construction, in addition to our role in delivering major equipment for the industry as it grows exponentially in the decades ahead.

Kiyoshi Seko
Executive Officer / Head of Business and Marketing
Voice from Acceralator

Under the Cleantech and energy industries, Kyoto Fusioneering develops advanced technologies for commercial fusion reactors to produce tritium production and generate power.