Nuclear Power
USSR's Obninsk Nuclear Power Plant
Obninsk , Russia
On June 27, 1954, the USSR's Obninsk Nuclear Power Plant, based on what would become the prototype of the RBMK reactor design, became the world's first nuclear power plant to generate electricity for a power grid, producing around 5 megawatts of electric power. the first nuclear reactor that produced electricity industrially, albeit at small scale.