China is rapidly closing in on an achievement that could transform the way we power homes, cities, and industries forever.
The country has entered the final assembly phase of a next-generation fusion reactor called the Burning Plasma Experiment Superconducting Tokamak, which is expected to be operational by 2027, per Popular Mechanics.
If it's successful, BEST would mark a major milestone in the race toward achieving fusion energy, a process that mimics the same physics that power the sun.
Unlike conventional energy sources, fusion doesn't rely on fossil fuels such as coal and oil. It's more environmentally friendly because it does not produce heat-trapping pollution or long-lived radioactive waste (like fission energy does) and uses abundant fuel sources such as hydrogen. The potential payoff is limitless, low-cost, renewable power.
China's Tokamak facility under constructionGet a glimpse of the Burning Plasma Experimental Superconducting Tokamak (BEST) currently under construction in east China's Hefei, which is set to showcase the generation of electricity through fusion energy.
Posted by China Xinhua Sci-Tech on Sunday, May 4, 2025
According to state media and the South China Morning Post, BEST is an intermediary step between China's earlier tokamak project and a much larger demonstrator called the Chinese Fusion Engineering Test Reactor.
"We have fully mastered the core technologies, both scientifically and technically," chief engineer Song Yuntao told the Post.
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In 2022, the United States made global headlines when researchers at the Lawrence Livermore National Laboratory achieved net energy output from fusion for the first time. China is now doubling down on its own efforts, building not only BEST but a network of other fusion and hybrid reactors.
Fusion energy could someday power entire cities with minimal fuel and near-zero pollution. This would dramatically slash energy costs for residents and businesses while also reducing the amount of heat-trapping gases we generate, which is driving rising global temperatures. That means cleaner air and fewer health issues, such as respiratory and heart diseases, linked to pollution.
While skeptics have said that fusion is always "30 years away," the BEST project and its American counterpart, SPARC — built by a startup spun out of the Massachusetts Institute of Technology — are showing real results.
With a target date of 2027, BEST may help bring fusion's promise into the real world much sooner than expected.
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