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Apr 1, 2026 - 1,000+ Seconds of Stability! This Shanghai Startup is Winning the Global Fusion Race



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.
Nuclear fusion, which simulates the sun`s thermonuclear reaction and is commonly known as "artificial sun," is regarded as the ultimate solution to humanity`s energy and carbon emission challenges.
High-temperature superconducting materials, with zero resistance, generate strong magnetic fields to hold the "fireball" in place for sustained ultra-high-temperature combustion.
The R&D team uses AI to control the system in real time, precisely capturing thousands of key parameters such as temperature and density.
The HH70 device boasts independent intellectual property rights, with a localization rate exceeding 96 percent.
Building on this key experimental platform, the company is now accelerating development of its next-generation device, the HH170, with the goal of achieving net energy gain from fusion, the company revealed.