American scientists achieved nuclear fusion net energy gain — for the first time in history, the reaction produced more power than it consumed.

 

American scientists achieved nuclear fusion net energy gain — for the first time in history, the reaction produced more power than it consumed.

On December 5, 2022, at the National Ignition Facility in Livermore, California, a laser array delivered 2.05 megajoules of energy to a hydrogen fuel pellet smaller than a peppercorn. The resulting fusion reaction released 3.15 megajoules — 54% more energy than was put in.

Fusion ignition. Achieved.

For 70 years, fusion energy research had a single goal: break even. Every previous experiment consumed more energy than the reaction produced, making it scientifically spectacular but energetically useless. December 5th changed the fundamental equation. For the first time, a fusion reaction was a net energy source, not a net energy sink.

The NIF team didn't stop there. Repeat shots in 2023 achieved ignition five more times, with the highest yield reaching 3.88 megajoules. The results are reproducible. The physics is confirmed.

Commercial fusion power is still a decade away — scaling from a peppercorn pellet to a power plant is a vast engineering challenge. But the scientific barrier that blocked 70 years of progress is gone.

The question is no longer if fusion works. It's how fast we can build it.

Source: National Ignition Facility, Lawrence Livermore National Laboratory & Science Journal, 2023

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