- IMM Investment Japan has led a Series D funding round for fusion energy startup Kyoto Fusioneering, backed by Korean industrial heavyweights.
- The investment was made through the Korea-Japan Fusion Fund, a cross-border vehicle established to connect Korean capital and industrial networks with Japanese deep-tech companies.
- Strategic investors in the fund include POSCO Holdings, POSCO International, Doosan, Hyundai Motor, and GS E&C.
- Octagon Venture Partners participated as a financial investor, alongside Japanese regional banks and strategic investors.
- Kyoto Fusioneering will use the proceeds to build and upgrade demonstration facilities and strengthen its research, development and manufacturing capabilities.
- The investment will also support its work on gyrotrons, high-powered microwave devices used to heat plasma in fusion systems.
- Kyoto Fusioneering is a deep-tech firm with core fusion power technologies including gyrotrons, fuel cycle systems, and blankets.
- The capital raised will fund the build-out of its UNITY demonstration infrastructure and strengthen R&D capabilities.
- The deal is being viewed as the first example of a cross-border cooperation platform linking South Korean industrial capital with Japanese foundational technology.
IMM Investment Japan has spearheaded a Series D funding round for Kyoto Fusioneering, a leading Japanese fusion energy startup, with significant participation from South Korean industrial giants such as POSCO, Doosan, Hyundai Motor, and GS E&C through the Korea-Japan Fusion Fund.12357
The fund aims to bridge Korean capital and industrial networks with Japanese deep-tech companies, enhancing cross-border technological cooperation. According to an IMM Investment Japan official, “The key significance of this funding is that it brings together major Korean strategic investors and a world-class Japanese technology company through a single investment platform.”
Kyoto Fusioneering plans to utilize the capital to build and upgrade its UNITY demonstration facilities and bolster its research, development, and manufacturing capabilities. The company is focused on developing essential technologies for fusion power, including gyrotrons for plasma heating and fuel cycle systems.6
The investment is seen as a pioneering example of cross-border cooperation, with an industry source noting, “Japan has no shortage of deep-tech companies with outstanding technology that need industrial partners as they expand globally.” This initiative is expected to foster not just financial investment but also technological and business collaboration between South Korean and Japanese firms.
Looking ahead, IMM Investment Japan plans to expand its cross-border strategy, targeting promising Japanese companies across various sectors, including semiconductors, advanced manufacturing, and energy.
“The Korea-Japan Fusion Fund is a dedicated cross-border vehicle, with Octagon Venture Partners and Japanese regional banks also participating. Proceeds will build UNITY demonstration facilities and boost gyrotron R&D, supporting technology and business cooperation beyond pure investment.”
