Helical Fusion Co., Ltd. has been designated as a finalist in the program run by Japan’s Ministry of Economy, Trade and Industry (METI) for the demonstration of fusion power generation. The program envisages total public funding of approximately 60 billion yen — over $400 million — spread across three years through 2028, with the goal of bringing fusion to a genuine power demonstration by the 2030s.
The METI program covers multiple technological approaches: tokamak, stellarator, and laser fusion. It is structured around a staged milestone system, in which progress is assessed against predefined technical and commercial targets. Candidates must demonstrate the technical feasibility of fusion and lay the groundwork for future commercial power plants. Safety and local community engagement are also part of the evaluation framework. The final amount to be allocated to Helical Fusion has not yet been announced: METI will disclose it following a formal funding decision.
Helical Fusion was founded in 2021 as a spin-out from the National Institute for Fusion Science (NIFS), one of the world’s leading stellarator research institutions. The company is developing a Helical Stellarator, a technology backed by roughly 70 years of accumulated research and engineering expertise in Japan. NIFS has built a strong experimental foundation through the Large Helical Device (LHD), which has achieved plasma temperatures exceeding 100 million degrees Celsius and sustained plasma operations of up to 3,268 seconds.
The choice of the helical stellarator follows a clear rationale. Unlike pulsed approaches such as those based on conventional tokamaks, the stellarator is designed for continuous, steady-state operation. Helical Fusion has built its strategy around three requirements it considers essential for a commercially viable fusion power plant: stable steady-state operation, net positive electricity generation, and sufficient maintainability to ensure high plant availability. Taken together, these three conditions have yet to be met in an integrated way by any fusion technology.
On the industrial side, more than 30 Japanese companies are already contributing to the development of key components for Helix HARUKA, the demonstrator device for high-temperature superconductor (HTS) magnets. Manufacturing and construction are already underway at the NIFS campus in Toki, Gifu Prefecture. Partners include manufacturers with advanced precision engineering capabilities and major heavy electromechanical companies with decades of sector experience.
The selection as a METI finalist strengthens Helical Fusion’s standing within Japan’s private fusion landscape and opens the door to significant public resources. Should the process conclude with a formal funding award, the company will be able to accelerate its path toward an operational fusion power plant in the 2030s. With this program, Japan positions itself among the handful of countries worldwide with a structured public strategy to move fusion out of the laboratory and into the electricity grid.
