27 June - Obninsk Nuclear Power Plant Soviet Union, became the world's first nuclear power plant to generate electricity for a power grid.

 

On 27 June 1954, the Obninsk Nuclear Power Plant in Obninsk, Soviet Union, became the world's first nuclear power plant to generate electricity for a power grid. This historic event marked a significant milestone in the development of nuclear energy for peaceful purposes. The Obninsk plant was designed to produce both electricity and heat for the city of Obninsk, using the AM-1 (Атом Мирный-1) reactor, which was a modified version of the Soviet Union's first plutonium production reactor.

The successful operation of the Obninsk Nuclear Power Plant demonstrated the feasibility of using nuclear fission to generate electricity on a commercial scale, paving the way for the expansion of nuclear power worldwide. It also contributed to advancements in nuclear reactor technology and safety protocols that continue to influence the industry today.