This research examines nuclear power in the context of sustainable development and assesses the relationship between the structure of energy production in the country and its environmental status. In the article the authors consider the technological and organizational aspects of the nuclear industry, which justify the prospects of this direction. Nuclear power has a low share of fuel costs in the structure of production cost in comparison to other energy sources, as well as a high capacity factor. Investment programs of developing countries include the construction of new nuclear power plants, and investment programs of developed countries include the construction of new ones or modernization of existing ones. According to the created model, the increase in the share of nuclear power in the structure of electricity production has a significant impact on reducing carbon dioxide emissions.