
Nuclear power reactors, reactor types and technologies | IAEA
Nov 7, 2025 · Nuclear power reactors produce energy by initiating and controlling a sustained nuclear chain reaction. Currently, over 400 such reactors in 32 countries provide about 10 per …
Nuclear Power Reactors in the World | IAEA
Sep 4, 2025 · This is the 44th edition of Reference Data Series No. 2, which presents the most recent reactor data available to the IAEA. It contains summarized information as of the end of …
What is Nuclear Energy? The Science of Nuclear Power
Nov 11, 2025 · What is nuclear fission? Nuclear fission is a reaction where the nucleus of an atom splits into two or more smaller nuclei, while releasing energy. For instance, when hit by a …
What are Small Modular Reactors (SMRs)? | IAEA
Sep 13, 2023 · Small modular reactors (SMRs) are advanced nuclear reactors that produce up to 300 MW (e) of low-carbon electricity, which is about one-third of the generating capacity of …
Water cooled reactors | IAEA
Dec 22, 2021 · Water cooled reactors have played a significant role in the commercial nuclear industry since its beginnings and currently account for more than 95 per cent of all operating …
Small modular reactors (SMR) | IAEA
Jul 7, 2024 · Small and medium-sized or modular reactors are an option to fulfil the need for flexible power generation for a wider range of users and applications. Small modular reactors, …
Nuclear research reactors | IAEA
Nov 11, 2024 · Research reactors are nuclear reactors used for research, development, education and training. They produce neutrons for use in industry, medicine, agriculture and …
Fast-neutron reactors, Fast nuclear reactors | IAEA
Jan 18, 2022 · Global interest in fast reactors has been growing since their inception in 1960 because they can provide efficient, safe and sustainable energy. Their closed fuel cycle can …
Nuclear Power Reactors in the World | IAEA
This is the 40th edition of Reference Data Series No. 2, which presents the most recent reactor data available to the IAEA. It contains summarized information as of the end of 2019 on power …
2. Nuclear fuel is at the heart of a nuclear reactor, and the safe and economic behaviour of this fuel is a key factor in the continuing long term development of nuclear power. This was …