Researchers at the Lawrence Livermore National Laboratory in California achieved the result last week, the Energy Department said. Known as a net energy gain, the goal has been elusive because fusion happens at such high temperatures and pressures that it is incredibly difficult to control.
The breakthrough will pave the way for advancements in national defense and the future of clean power, Energy Secretary Jennifer Granholm and other officials said.
“Ignition allows us to replicate for the first time certain conditions that are found only in the stars and the sun,” Granholm told a news conference in Washington. “This milestone moves us one significant step closer” to having zero-carbon fusion energy “powering our society.”
Fusion ignition is “one of the most impressive scientific feats of the 21st century,” Granholm said, adding that the breakthrough “will go down in the history books.”
Appearing with Granholm, White House science adviser Arati Prabhakar called the fusion ignition achieved Dec. 5 “a tremendous example of what perseverance really can achieve” and “an engineering marvel beyond belief.”
Proponents of fusion hope it could one day displace fossil fuels and other traditional energy sources. Producing carbon-free energy that powers homes and businesses from fusion is still decades away. But researchers said the announcement marked a significant leap forward.
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