Timeline of Nuclear Power
Nuclear power from the first controlled chain reaction in 1942 to new large reactors entering service by 2024, tracing reactor designs, international cooperation, construction programs, accidents, and their consequences.
- Category
- Engineering & Technology
- Events
- 19 events 1942 – 2024
- Generated
- by gpt-6
1942: Chicago Pile-1 sustains a chain reaction
Enrico Fermi's team achieved a controlled, self-sustaining nuclear chain reaction at the University of Chicago. The graphite-and-uranium assembly established that fission could be regulated, providing the experimental basis for later power reactors.
https://en.wikipedia.org/wiki/Chicago_Pile-11951: An experimental reactor generates usable electricity
Experimental Breeder Reactor I in Idaho generated electricity from nuclear fission and lit four light bulbs. The experiment demonstrated the conversion of reactor heat into electrical power, while testing whether a reactor could produce additional nuclear fuel.
https://en.wikipedia.org/wiki/Experimental_Breeder_Reactor_I1953: Eisenhower proposes Atoms for Peace
President Dwight D. Eisenhower proposed international cooperation on peaceful nuclear technology in a speech to the UN. The initiative encouraged the sharing of research reactors, training, and technical knowledge while linking civilian expansion to safeguards.
https://en.wikipedia.org/wiki/Atoms_for_Peace1954: Obninsk supplies the electricity grid
The Soviet Union connected the Obninsk nuclear plant to the grid. Its small graphite-moderated reactor became the first nuclear power station to supply a public electricity network, moving nuclear generation beyond isolated experiments.
https://en.wikipedia.org/wiki/Obninsk_Nuclear_Power_Plant1956: Calder Hall begins commercial-scale generation
Calder Hall opened in Britain with gas-cooled, graphite-moderated reactors. It supplied electricity on a commercial scale while also producing plutonium for military use, illustrating the close connection between early power programs and weapons production.
https://en.wikipedia.org/wiki/Calder_Hall_nuclear_power_station1957: An international atomic energy agency is established
The International Atomic Energy Agency was established to support peaceful nuclear applications and help prevent their diversion to military purposes. Technical cooperation, safeguards, and international safety guidance became part of nuclear power's institutional framework.
https://en.wikipedia.org/wiki/International_Atomic_Energy_Agency1957: Shippingport demonstrates civilian pressurized-water power
Shippingport began supplying electricity in Pennsylvania. Developed under Hyman Rickover's direction, the plant applied pressurized-water reactor technology to civilian generation and shared operating experience with a growing commercial nuclear industry.
https://en.wikipedia.org/wiki/Shippingport_Atomic_Power_Station1962: Canada starts its heavy-water power prototype
Canada's Nuclear Power Demonstration reactor supplied electricity to Ontario's grid. Its use of natural uranium, heavy water, and refueling during operation tested a design approach that became the basis of Canada's commercial reactor program.
https://en.wikipedia.org/wiki/Nuclear_Power_Demonstration1974: France launches the Messmer Plan
Prime Minister Pierre Messmer announced a major expansion of nuclear electricity after the oil crisis. France pursued repeated construction of standardized pressurized-water reactors, using a coordinated national program to reduce dependence on imported fossil fuels.
https://en.wikipedia.org/wiki/Nuclear_power_in_France1979: Three Mile Island suffers a partial meltdown
Equipment failures and operator actions caused a partial core meltdown at Three Mile Island Unit 2 in Pennsylvania. The accident prompted changes in operator training, control-room design, emergency planning, and regulatory oversight across the American nuclear industry.
https://en.wikipedia.org/wiki/Three_Mile_Island_accident1986: Chernobyl exposes catastrophic reactor vulnerabilities
A safety test at Chernobyl in Soviet Ukraine ended in explosions and a reactor fire. Design defects and operating decisions contributed to the disaster, which spread radioactive material across Europe and intensified scrutiny of reactor safety and international reporting.
https://en.wikipedia.org/wiki/Chernobyl_disaster1996: Japan operates an advanced boiling-water reactor
Kashiwazaki-Kariwa Unit 6 in Japan entered commercial operation as the first advanced boiling-water reactor. The design incorporated internal circulation pumps and digital controls, introducing a new generation of large commercial reactors.
https://en.wikipedia.org/wiki/Advanced_boiling_water_reactor2011: Fukushima triggers a reassessment of nuclear safety
An earthquake and tsunami disabled power and cooling at Japan's Fukushima Daiichi station, leading to meltdowns in three reactors. The accident prompted international safety reviews, prolonged shutdowns in Japan, and renewed nuclear phaseout decisions elsewhere.
https://en.wikipedia.org/wiki/Fukushima_nuclear_accident2018: Sanmen starts the first commercial AP1000
Sanmen Unit 1 in China entered commercial operation using Westinghouse's AP1000 design. Its safety systems used gravity, natural circulation, and stored water to reduce dependence on powered equipment during accidents; construction also tested modular assembly at full scale.
https://en.wikipedia.org/wiki/Sanmen_Nuclear_Power_Station2018: Taishan brings a new European design online
Taishan Unit 1 in China became the first European Pressurized Reactor to enter commercial operation. The Franco-Chinese project put a large reactor design into service while earlier-started projects using the design in Finland and France remained under construction.
https://en.wikipedia.org/wiki/Taishan_Nuclear_Power_Plant2021: Barakah begins commercial service in the Emirates
The first Barakah reactor entered commercial operation in the United Arab Emirates. Built with South Korean technology, the project demonstrated how a country without an existing nuclear fleet could develop operators, regulation, and infrastructure alongside new construction.
https://en.wikipedia.org/wiki/Barakah_nuclear_power_plant2023: Olkiluoto completes a prolonged reactor project
Olkiluoto Unit 3 began regular electricity production in Finland after construction that started in 2005. The reactor added substantial generating capacity, while its long delays and cost overruns illustrated the delivery risks of a new large-reactor design.
https://en.wikipedia.org/wiki/Olkiluoto_Nuclear_Power_Plant2023: China commissions a modular gas-cooled reactor
China's high-temperature gas-cooled demonstration plant at Shidao Bay entered commercial operation. Two helium-cooled reactor modules supplied one turbine, using fuel particles embedded in graphite spheres to test a different approach to modular nuclear generation.
https://en.wikipedia.org/wiki/HTR-PM2024: Vogtle finishes its two-reactor expansion
Vogtle Unit 4 entered commercial operation in Georgia, following Unit 3 in 2023. Completion brought new large reactors into the American fleet after years of construction delays and cost increases, leaving both additional electricity supply and a difficult financing record.
https://en.wikipedia.org/wiki/Vogtle_Electric_Generating_Plant