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Yuzu Xu's avatar

good context on the research institutions track. one angle missing from most english coverage: the 15th FYP (released march 2026) explicitly encourages private sector investment in hydropower and nuclear — the policy signal that was missing in earlier fusion coverage. the timing isnt coincidental. the deepseek ulanqab data center project and the broader AI compute buildout are creating a power demand story that connects directly to why CFEC got $2.1B in registered capital at inception. chinese policymakers are not funding fusion in isolation from the AI infrastructure buildout — the demand projections that justify long-timeline energy investment are partly being set by AI cluster requirements. david fishman (load side) has been tracking the power demand angle; worth reading alongside this piece for the full picture.

Leon Liao's avatar

If net energy gain is treated as a hard benchmark for judging leadership in fusion technology, then at least for now the United States is still ahead. In December 2022, the National Ignition Facility at Lawrence Livermore National Laboratory became the first to achieve a positive scientific energy balance in a controlled fusion experiment: about 2.05 MJ of laser energy delivered to the target produced roughly 3.15 MJ of fusion output. It has since repeated that result multiple times, and by 2025 had pushed single-shot output to 8.6 MJ, with target gain exceeding 4. On that metric, the U.S. has already crossed a globally recognized technological milestone.

That said, it is important to define the milestone precisely. What NIF achieved was target gain, or scientific breakeven, not net electricity generation at the level of the full system, and certainly not engineering breakeven in the sense relevant to a commercial power plant. LLNL itself has made this clear: although the fusion reaction produced more energy than was delivered to the target, the total energy required to power the entire laser system remained far above the fusion output. In other words, true continuous power generation still requires net energy gain at the level of the whole facility.

By contrast, China’s most notable progress so far has been concentrated in the magnetic-confinement pathway, especially in steady-state operation, long-pulse performance, and broader engineering capability under high-parameter conditions. But China has not yet been the first to cross the most visible threshold of all: net energy gain. In magnetic confinement systems, Q = 1 means that fusion power equals external heating power. That threshold has still not been reached anywhere in the world. The world record remains JET’s Q = 0.67. Put differently, the United States has already achieved breakeven on the inertial-confinement route, while no country has yet achieved Q ≥ 1 on the magnetic-confinement route.

So the more accurate conclusion is this: if net energy gain is taken as the defining symbolic technological threshold, the United States remains ahead for now. But if the benchmark is national organizational capacity, engineering scale-up, supply-chain integration, and the long-term ability to industrialize fusion, then China is turning fusion from a narrow laboratory race into a broader state-backed industrial competition. That may prove to be the more consequential advantage over time. On this point, I think the Caleb's piece is highly comprehensive and well judged.

Leon Liao's avatar

There is also another important feature of China’s approach that deserves emphasis: the dual-track structure of national champions alongside locally supported startups. Beyond the heavily state-backed China Fusion Energy Co., there are also players such as NeoFusion, Startorus, Energy Singularity, and ENN pursuing commercialization pathways, many of them with support from local governments or state-linked capital. This hybrid ownership structure has already shown strong growth potential in sectors such as China’s commercial space industry. I fully agree that China Fusion Energy Co. is not merely a financing vehicle. Its deeper significance is that it can connect research, engineering construction, capital operations, and industrial application, effectively serving as the relay mechanism that carries fusion from experimental breakthrough to commercial deployment.

That matters because once a given technical pathway works, China may be able to move faster than many other countries into scale-up, replication, and deployment. Fusion may end up following a pattern similar to nuclear fission, solar, and high-speed rail: the United States may not lose the race from 0 to 1, but China may still hold the advantage from 1 to 100 in engineering execution, industrialization, and mass deployment. In other words, even if the U.S. makes the decisive breakthrough first, China could still be the one that turns fusion into real infrastructure faster, thanks to state-backed financing, integrated supply chains, lower regulatory friction, and far greater experience with large-scale buildout. I explored this systemic competitive advantage in more detail in my other piece, Why Did China’s Nuclear Power Scale Overtake the U.S.?