Hydroelectric plants play an important role in electricity production in Turkey as well as all over the world. However, the increase in the irregularity of flow regimes and the decrease in water ranges of the rivers due to global warming in recent years have revealed that supporter systems are necessary. One alternative solution that could be applied is an integrated system with both hydropower and wind energy. In this study, a system consisting of a hydroelectric power plant (HEPP) and/or wind power plant(s) (WPP) is designed to resolve the energy demand for the Konya water treatment plant, and the results were analyzed. The wind power calculator program and local wind energy measurement data were used to design the WPP. In addition, the water flow rate due to the mean of the elevation difference between the bend of the dam and plant was used to design the HEPP. The electrical energy consumption of the Konya water treatment plant was considered in the design of the WPP and HEPP. The energy production of the WPP and HEPP, the energy demand of the water treatment plant, the monthly and yearly affordability of the energy production were calculated. Additionally, an economic analysis was performed, where the basic payback period was calculated. All the data used in this study are based on longterm measurements. (C) 2013 Elsevier Ltd. All rights reserved.