Nuclear Fusion
A technology in which light atomic nuclei such as deuterium and tritium undergo fusion under extreme temperature and pressure to release large amounts of energy, regarded as one of the ultimate solutions for clean energy. Mainstream approaches include tokamaks, stellarators and laser inertial confinement, with the core challenges being net energy gain and commercialization.
Timeline (last 90 days)
Controlled nuclear fusion has not yet been commercialized on Earth, and the infrastructure required to mine helium-3 on a large scale from the Moon and transport it back remains far out of reach.
For a fusion power plant to become a reliable grid power source, engineering challenges must be solved including continuous stable operation, material durability under extreme neutron irradiation, tritium fuel self-sustaining cycling, and overall system economics.
Breakthrough Energy's investment directions include long-duration energy storage, green hydrogen production, nuclear fusion, and direct air carbon capture and other hard-tech climate technologies.
The fusion reaction fuel deuterium can be extracted from seawater, and the reaction emits no greenhouse gases and produces no highly radioactive, long-lived waste like that from uranium fission.
The chemical energy stored in molecules can fundamentally be traced back to the energy provided by stellar nuclear fusion, converted through processes such as photosynthesis.
Early fusion research was largely driven by the exploration of high-energy physics and weapons technology.
Defense investment often accelerates the maturation of foundational technologies, which in turn feeds back into civilian commercialization processes.
The inherently sensitive nature of fusion technology means that related cooperation will be subject to stricter regulation and scrutiny.
Fusion energy startups are signing cooperation agreements with defense-related agencies.
The basic principle of nuclear fusion is to fuse light atomic nuclei (such as deuterium and tritium) into heavier atomic nuclei (such as helium) at temperatures exceeding 100 million degrees Celsius while releasing energy, the same mechanism by which the sun generates energy.
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All Facts (20)
核聚变单位质量释放的能量约为化学燃烧的1000万倍
85%UnverifiedThe basic principle of nuclear fusion is to fuse light atomic nuclei such as deuterium and tritium at extreme temperatures exceeding 100 million degrees Celsius into heavier atomic nuclei while releasing energy, the same mechanism by which the Sun generates energy.
60%UnverifiedThe confinement pressure of fusion plasma is proportional to the fourth power of the magnetic field strength, meaning doubling the magnetic field strength results in a 16-fold increase in confinement capability.
60%UnverifiedAs of 2024, approximately 40-plus private fusion energy companies worldwide have cumulatively received more than $6 billion in private investment.
60%UnverifiedControlled nuclear fusion has not yet been commercialized on Earth, and the infrastructure required to mine helium-3 on a large scale from the Moon and transport it back remains far out of reach.
50%UnverifiedFor a fusion power plant to become a reliable grid power source, engineering challenges must be solved including continuous stable operation, material durability under extreme neutron irradiation, tritium fuel self-sustaining cycling, and overall system economics.
50%UnverifiedBreakthrough Energy's investment directions include long-duration energy storage, green hydrogen production, nuclear fusion, and direct air carbon capture and other hard-tech climate technologies.
50%UnverifiedThe fusion reaction fuel deuterium can be extracted from seawater, and the reaction emits no greenhouse gases and produces no highly radioactive, long-lived waste like that from uranium fission.
50%UnverifiedThe chemical energy stored in molecules can fundamentally be traced back to the energy provided by stellar nuclear fusion, converted through processes such as photosynthesis.
50%UnverifiedThe inherently sensitive nature of fusion technology means that related cooperation will be subject to stricter regulation and scrutiny.
50%UnverifiedDefense investment often accelerates the maturation of foundational technologies, which in turn feeds back into civilian commercialization processes.
50%UnverifiedEarly fusion research was largely driven by the exploration of high-energy physics and weapons technology.
50%UnverifiedThe basic principle of nuclear fusion is to fuse light atomic nuclei (such as deuterium and tritium) into heavier atomic nuclei (such as helium) at temperatures exceeding 100 million degrees Celsius while releasing energy, the same mechanism by which the sun generates energy.
50%UnverifiedNuclear fusion uses isotopes of hydrogen (deuterium and tritium) as fuel, and can theoretically provide near-limitless, clean, high-density energy without producing long-lived highly radioactive waste.
50%UnverifiedNuclear fusion has yet to achieve truly net-energy-gain commercial power generation.
50%UnverifiedCommercial power generation requires Q≥10 or even higher, and there is still a huge gap between scientific breakthroughs and engineering applications.
50%UnverifiedIn December 2022, the Lawrence Livermore National Laboratory in the United States achieved Q>1 inertial confinement fusion for the first time, obtaining 3.15 megajoules of fusion energy from 2.05 megajoules of laser energy input.
50%UnverifiedNuclear fission produces long-lived radioactive waste and carries the risk of core meltdown, whereas nuclear fusion fuel reserves are nearly limitless and the reactor cannot run out of control and explode.
50%Unverified传统核裂变电站的保险框架（如美国的Price-Anderson法案）并不直接适用于核聚变技术，造成监管和保险产品设计的真空地带
50%UnverifiedFusion energy startups are signing cooperation agreements with defense-related agencies.
50%