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我が国の長期エネルギー需給シナリオに関する検討

A Study on long-term energy scenarios for Japan

佐藤 治

Sato, Osamu

2050年に至る我が国のエネルギー需給の動向と原子力エネルギー利用の将来的なポテンシャルについて検討を行った。この目的のため、今後の経済成長,エネルギー原単位改善,各種エネルギー源とエネルギー技術の価格と利用可能量等を設定した。次に、これらの前提条件に基づいて原子力エネルギー利用規模の異なる3ケースの長期エネルギーシナリオを作成し、その比較評価を通じて原子力エネルギー利用の役割を検討した。この検討の結果、原子力エネルギー利用の拡大は化石燃料の消費量を低減し、エネルギーセキュリティの向上と低コストでの二酸化炭素排出量の大幅な低減に貢献できる可能性を有することが示された。

A study was made on the evolution of energy demand and supply toward the year 2050 and on the potential benefits of nuclear energy utilization in Japan. For this purpose, assumptions were made on future economic growths, improvement in energy intensity, availability and costs of energy sources and energy technologies. Then, based on these assumptions, three cases of long-term energy scenarios were built with a different scale of nuclear energy utilization, and through their comparison possible role of nuclear energy was analyzed. It was indicated from this study that expansion of nuclear energy utilization will contribute to the reduction of fossil energy consumption, and therefore, enhancement of stable supply of energy and substantial reduction of carbon dioxide emissions with low economic costs.

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