The floating solar photovoltaic system is a new trend in the world. This system is suitable for hybrid solutions with hydropower plants. There are a lot of advantages of the floating solar photovoltaic systems. Solar energy is an intermittent energy source so with a hybrid solution of floating solar and hydroelectric power plant can balance each other’s energy generation. It can be said that this hybrid solution can increase the capacity factor of the hydropower plant. Turkey has the second greatest hydropower installed capacity in Europe with about 31.483 MW so the floating solar photovoltaic and hydropower hybrid solutions will be very beneficial to Turkey’s solar installed capacity growth without using land areas. In this respect Gursogut-1 HEPP with 38.08 MW installed capacity which is located in Ankara was chosen for the hybrid solution in this study. During the literature survey period it was seen that there aren’t a lot of academic studies about floating solar and hydropower plant hybrid systems’ performance analysis. The aim of this study is to investigate the performance analysis of the floating solar photovoltaic and hydropower plant hybrid system. In this study the gain in the energy yield when a floating solar photovoltaic system mounted on this hydropower water reservoir has been analyzed. The performance analysis has been carried out on PVsyst software according to the system’s key parameters including meteorological data, available installation area, photovoltaic module properties and inverter features. Results obtained for system’s total energy production, performance ratio and specific energy are discussed.