This review paper describes the author's view of superconductor applications for electric power system, who was one of the planners of MITI/AIST Project of R & D on Power Applications of Superconductor Technology. In the near future, the power system in Japan will require critically new technologies to overcome the foreseenable difficult problems. Considering the system character, the first step to introduce superconductor technology in the power system should be to “superconductorize” the existing apparatuses in the system, with some analogy to biological evolution. According to a general way to commercialize new technology, the R & D of superconducting generators, which will increase not only generating efficiency but also system stability enormously, are under way, steadily step by step, by the Project team. These R & D works are believed to lead us in the future to “totally superconductorized power system, ” which has the highest efficiency, reliability, stability, availability and economy.
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