Nuclear energy role for sustainable development of environment, economy, and energy

Expectation to the nuclear energy has been shown in each country to cope with environment, economy and energy problems. An estimation of optimal energy costs in the world until 2100 using a long-term energy model was conducted. Based on the results, nuclear energy and energy constitution under the environment limitation were described from the viewpoint of the nuclear energy policy comparison, impact of many conditions on nuclear energy, international framework of CO₂ reduction and nuclear energy deployment. Difference of the influences on those between resources country and non-resources country, and also between developed and developing countries was considered. Furthermore, a proposal of consideration for nuclear energy development and problems to be solved were discussed. (T.T.)