Nuclear bolsters energy security and contributes to addressing climate concerns. In 2023, more than 410 reactors were in operation in over 30 countries, with nuclear energy providing 9% of global electricity supply. Nuclear was the second-largest source of low-emissions electricity after hydropower, producing 20% more than wind and 70% more than solar PV, and also providing heat for industry, district heating and desalination in several countries. Since 1971, nuclear energy has avoided 72 Gt ... Nuclear fusion is the process by which two light atomic nuclei combine to form a single heavier one while releasing massive amounts of energy. Fusion reactions take place in a state of matter called plasma — a hot, charged gas made of positive ions and free-moving electrons with unique properties distinct from solids, liquids or gases. Nuclear power is the fifth-largest source of electricity in India after coal, hydro, solar and wind. As of April 2025, India has 25 nuclear reactors in operation in 7 nuclear power plants, with a total installed capacity of 8,880 MW. [1][2] Nuclear power produced a total of 56.7 TWh in FY 2024-25, contributing around 3% of total power generation in India. [3] 11 more reactors are under construction with a combined generation capacity of 8,700 MW. In October 2010, India drew up a plan to ... Nuclear power is the use of nuclear reactions to produce electricity. Nuclear power can be obtained from nuclear fission, nuclear decay and nuclear fusion reactions. Presently, the vast majority of electricity from nuclear power is produced by nuclear fission of uranium and plutonium in nuclear power plants.