This study aims to observe whether the overall yield has changed utilizing the different blade structures and the end plates placed on the different blade structures of the Savonius-type wind turbine. End plates of different diameters are placed at the top and bottom of the turbine to increase overall efficiency.While the experimental analysis was conducted in the aerodynamic laboratory of the faculty of Aeronautical and Astronauticalat Erciyes University, Ansys Fluent software is used for

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... ical calculations.The turbine structure used for the numerical study is made according to the optimum values taken from the experimental investigationto minimize the time wasted. The results in the experimental and numerical analysis were compared with each other and the overall yield was observed to increase according to these analysis results. The presence of the end plate significantly increased the efficiency of the savonius turbine and allowed it to operate in the higher TSR range.This increase is directly proportional to the enlarging in the diameter of the end plate