Nuclear power is still needed as an intermediate source of electricity because renewable energy sources cannot reduce the carbon dioxide emissions on their own. If the nuclear share of electricity generation will reach 26% by 2050 and 34% by 2075, the global temperature rise can be limited to 2 degrees Celsius before 2100 according to the forecasts presented in this book.

The second expansion phase of nuclear power has started and Finland has been the first western country to order a nuclear power plant in 2003. The Olkiluoto-3 plant will be the prototype of EPR plants, which will be also built in France and China. There are several options for nuclear power plants available and the most of them are reviewed in this book. Also new small and modular plants will be available in the near future.