PROBLEM TO BE SOLVED: To provide an energy utilization device which enables efficient utilization based on renewable energy sources.SOLUTION: An energy utilization device comprises a separation unit that decomposes carbonic water into hydrogen and carbon dioxide, a hydrogen supply unit that supplies the hydrogen for power generation in a power generator, and a carbon dioxide supply unit that supplies the carbon dioxide for plant growth.SELECTED DRAWING: Figure 1【課題】再生可能なエネルギー源に基づいて、効率的に利用が可能なエネルギー利用装置を提供する。【解決手段】本発明のエネルギー利用装置は、炭酸水を水素と二酸化炭素に分解する分離ユニットと、前記水素を発電機での発電用に供給する水素供給部と、前記二酸化炭素を植物育成用に供給する二酸化炭素供給部と、を備える。【選択図】図１
