03 March 2021 Share China will have the world's largest nuclear power fleet within a decade, while most of the units in longstanding nuclear regions - Japan, the European Union and the USA - are facing the end of their original 40-year design lifetime, Brent Wanner, lead of World Energy Outlook Power Sector Modelling & Analysis at the International Energy Agency (IEA), said yesterday. Without policy support for the long-term operation of the existing fleet, this trend is certain to continue, he told delegates at the High-Level Workshop on Nuclear Power in Clean Energy Transitions, which the IEA held jointly with the International Atomic Energy Agency (IAEA).