Shanghai’s HH70 tokamak startup sustains a 20 min long-pulse plasma current

https://english.news.cn/20260206/1e56546bb39b4d9ea4cf0e2bb2b30cbf/c.html

https://www.energysingularity.cn/en/

Shanghai-based fusion startup Energy Singularity announced that its HH70 high-temperature superconducting (HTS) tokamak has set a global milestone for a commercially built nuclear fusion device — sustaining a steady-state, long-pulse plasma current for 1,337 seconds.

Founded in 2021 as China’s first private fusion energy company, Energy Singularity completed and commissioned the world’s first HTS tokamak, the HH70, in June 2024. The device has conducted 5,755 experiments, with the latest round achieving the thousand-second-level pulse. According to the company, this milestone was made possible by continuous optimization of its AI-based plasma control system.

The company’s goal is to reduce the levelized cost of electricity from fusion power to that of thermal power, or even lower.

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