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World's largest particle accelerator begins warming thousands of local French residents with waste energy from the 16-mile Large Hadron Collider — CERN's accelerator leverages its massive cooling network to help slash local carbon emissions

Summary by Tom's Hardware
A new heat exchange system between the LHC and the French town of Ferney-Voltaire is directing waste heat energy from CERN's accelerator to warm thousands of homes and businesses.
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4 Articles

It is probably the most sophisticated and expensive central heating system in the history of humanity. Usually, the Great Hadron Collider (LHC) of CERN makes headlines for his discoveries about the origins of the universe, the black matter or the Higgs boson. But since mid-January, this monster [...]

What if the largest scientific instrument in the world could also heat your home? It is now a reality at the Franco-Swiss border, where CERN proves that cutting-edge science and sustainability can go hand in hand.

The particle accelerator LHC is now part of a district heating network. The waste heat of the system is supposed to heat thousands of households in France. However, the amount of energy released varies considerably.

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Tom's Hardware broke the news in on Saturday, January 31, 2026.
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