Water management and electricity output of a Hybrid Renewable Energy System (HRES) in Fournoi Island in Aegean Sea

The necessity of mitigating the consequences of energy dependence and water scarcity in remote areas, such as small islands puts forward the investigation of renewable energy sources. Especially in Aegean, the rich wind potential and natural topography favors the use of Hybrid Renewable Energy System (HRES). In this research work, a HRES in Fournoi island, in eastern Aegean sea, is designed in order to utilize hydropower for electricity generation and cover drinking and agricultural water demands through desalination of sea water. The proposed system includes four wind turbines, a desalination plant, a small hydroelectric station, a pumping station and two water reservoirs. Concerning the generated power from the wind turbines, it is assumed that 30% is incorporated directly to the power grid, while the remaining 70% is available for water pumping and desalination. In order to evaluate the performance of the system, three scenarios are being studied, based on different combinations of fulfillment of electricity and water needs and a ten-year reliability is conducted. This study leads to results of the project's potential in covering both water and electricity demands of the local society.