September 26, 1977, the day of ChNPP Power Unit 1 start-up. The first of nuclear power plant four reactors began to work opening the way to nuclear power industry in Ukraine.

We remind that before the accident of April 26, 1986, there had been four power units with total electric power output of 4,000 Megawatt. ChNPP was the first nuclear power plant which started to work in Ukraine (1977) and the first one which commenced decommissioning (2000).