Uploaded March 2026 | Updated September 2026, 2 weeks ago

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The story of fusion energy began with Arthur Eddington's revolutionary lecture on 24th August 1920. Eddington was the first to propose that the Sun, along with all other stars, was powered by fusion energy. A century later we are building our own stars here on Earth - with the goal of endless clean electricity.

UKAEA leads the world in fusion research with a wide range of programmes covering robotics, materials testing and development, and tritium science. Our scientists and engineers are working with partners around the globe to develop fusion as a new source of clean energy for tomorrow’s power stations.

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