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Japan's first fusion energy company achieves key milestone towards commercial reactor

Helical Fusion, a Japanese start-up company, announced on Monday that it had completed a crucial performance test of a superconducting coil at high temperatures. This marks a significant milestone in the commercialisation of nuclear fusion.

Nuclear fusion is the process of smashing together atoms at high temperatures to produce heat, similar to the sun. It could, one day, generate enormous amounts clean energy with minimal radioactive waste compared to the fission reactors we use today.

Despite 70 years of global research, there has yet to be a commercially viable fusion reactor.

Helical Fusion announced that the HTS coil it tested, which is a key component in commercial fusion reactors replicated the magnetic field inside the device. It also achieved a stable flow of current under superconducting condition, marking a first for the world.

The company can now proceed to build and manufacture its integrated demonstration device Helix HARUKA. This device is designed to demonstrate the feasibility of continuous and stable fusion reactions.

Helical Fusion CEO Takaya Taguchi stated at a press conference that "this means the possibility of achieving the fusion power generation before the rest of world has been demonstrated."

The company, as the sole inheritors of the helical fusion technologies developed by the National Institute for Fusion Science(NIFS), is developing the Helical stellarator. It aims to become the first commercially viable fusion plant based on the design in the 2030s.

Sanae Takaichi has been appointed as Japan's prime minister. She has shown strong support for nuclear fusion, and this has led to increased expectations in the sector.

Taguchi said that while the United States, China, and other countries have spent over one trillion dollars ($6.6 billion) to speed up fusion research, Japan has only spent about 100 billion dollars.

Taguchi stated that he hoped the Takaichi Administration would bridge the gap between the U.S.A. and China or even surpass them through increased funding and policies support.

According to a group representing the industry, global fusion energy investments have grown by $2.64 billion since July last year. However, companies say that more capital is required to make the industry commercial.

Helical Fusion claims that out of the 50 fusion projects in the world, they aim to be the first to achieve all three key requirements of commercial viability: produce stable power, produce more energy than the system consumes and demonstrate the ability to maintain regular component maintenance.

Commonwealth Fusion Systems (a spin-off of the Massachusetts Institute of Technology) plans to build what it calls "the world's very first grid-scaled fusion power plant" in Virginia. The power plant is expected to be operational by early 2030s.

(source: Reuters)