The concept of a power plant that uses a controlled thermonuclear fusion reaction as the energy source in its reactor. Because fusion technology has not yet been sufficiently mastered, we do not know exactly what a fusion plant will look like. The most likely scenario is the use of the tokamak principle, in which deuterium will fuse with tritium. The heat generated will be used in a secondary circuit to produce steam that will drive a conventional steam turbine — so the fusion plant will operate like a conventional thermal power plant, be it nuclear or coal. If the fusion process, during which charged particles are created were successfully managed, the fusion power plant would generate electricity directly, without the use of the steam cycle.