A nuclear power plant (sometimes abbreviated as NPP) is a thermal power station in which the heat source is a nuclear reactor. As is typical of thermal power stations, heat is used to generate steam that drives a steam turbine connected to a generator that produces electricity. As of 2022, the International Atomic Energy Agency reported there were 439 nuclear power reactors in operation in 32 countries around the world.Nuclear plants are very often used for base load since their operations, maintenance, and fuel costs are at the lower end of the spectrum of costs.
However, building a nuclear power plant often spans five to ten years, which can accrue to significant financial costs, depending on how the initial investments are financed.Nuclear power plants have a carbon footprint comparable to that of renewable energy such as solar farms and wind farms, and much lower than fossil fuels such as natural gas and brown coal. Despite some spectacular catastrophes, nuclear power plants are among the safest mode of electricity generation, comparable to solar and wind power plants.

1981Apr, 25
More than 100 workers are exposed to radiation during repairs of a nuclear power plant in Tsuruga, Japan.
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Events on 1981
- 20Jan
Iran hostage crisis
Twenty minutes after Ronald Reagan was inaugurated, Iran releases 52 American hostages. - 27Apr
Computer mouse
Xerox PARC introduces the computer mouse. - 27Jun
Mao Zedong
The Central Committee of the Communist Party of China issues its "Resolution on Certain Questions in the History of Our Party Since the Founding of the People's Republic of China", laying the blame for the Cultural Revolution on Mao Zedong. - 7Jul
Sandra Day O'Connor
U.S. President Ronald Reagan appoints Sandra Day O'Connor to become the first female member of the Supreme Court of the United States. - 15Sep
Sandra Day O'Connor
The Senate Judiciary Committee unanimously approves Sandra Day O'Connor to become the first female justice of the Supreme Court of the United States