温泉資源を有する遠隔離島において，小規模で地産地消型の再生可能エネルギーの一つである温泉水バイナリー発電の可能性を考察する．高温の温泉水と冷却用の周辺海域の海洋深層水を利用して，温泉水の温度と汲み上げ湯量から期待される発電量と発電設備費用から発電コストを算定して経済性を分析評価するとともに，海洋深層水の複合利用の有効性を検討し地域の活性化の可能性を考察する．
A feasibility study on binary cycle generation systems to use hot spring water which was locally produced and consumed renewable energy was conducted. The resource is in many remote isolated islands around the country. Electric generation quantity gained by thermal energy conversion system of high temperature hot spring water and cool deep ocean water, and expense of generation related facilities were estimated. And economical assessment by estimation of generation cost was examined. Furthermore some countermeasures of revitalization for remote isolated islands to pay attention to the multipurpose utilization of deep ocean water were studied.