Economics for managing nuclear energy in Japan

An economic scale of nuclear energy was evaluated as a total amount of sales of electricity. It was 43,018 million dollars (M$), including a fuel cycle cost at up stream and down stream. Due to several casualty accidents, for example, an earth quake attacked to the Kashiwazaki-Kariwa Units in 2007, the economic scale of nuclear energy was decreasing from 47,893M$ in previous study. An indirect effect of nuclear energy linked with the green technology was effective to avoid global warming. Hypothetical trading of CO2 emission might save 4,000M$, that is 10% of the ordinary earnings. (author)