Who / What
Thorium-based nuclear power is a nuclear energy technology that extracts power from the fission of the isotope uranium‑233, which is bred from the fertile element thorium. The fuel cycle relies on the process of breeding U‑233 in a reactor using thorium, enabling sustainable nuclear energy generation.
Background & History
The concept originated in the early 20th century when scientists discovered that thorium could be used to breed uranium‑233 in a reactor. During the 1950s and 1960s experimental reactors explored the thorium fuel cycle, but it did not advance to large‑scale commercial use. Interest in the technology persisted through the decades, with occasional research programs revisiting its potential advantages.
Why Notable
Thorium-based nuclear power offers several benefits over conventional uranium fuel: thorium is far more abundant on Earth, the fuel cycle produces less long‑lived nuclear waste, and the breeder product, uranium‑233, has a lower weaponization potential. These attributes make the thorium cycle attractive for cleaner, safer, and potentially more sustainable nuclear energy.
In the News
The prospect of safer, more sustainable power has brought thorium fuel back into focus, with new research projects and pilot plants receiving support in several countries. Recent discussions emphasize thorium’s potential role in addressing climate change and reducing nuclear proliferation risks.
