Japan plans to build its first nuclear fusion power plant, which is expected to be put into operation within five years. Nuclear fusion power generation is a technology that uses nuclear fusion reaction to produce heat energy, and then uses heat energy to generate electricity. Now major countries are vigorously developing the research of controllable nuclear fusion, hoping to master the technology of controllable nuclear fusion power generation as soon as possible and grasp the rice bowl of energy in their own hands. Japan is also vigorously developing controllable nuclear fusion power generation technology. Japan plans to build the first nuclear fusion power plant, which is expected to be put into operation within five years.