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The main purpose of this work is to enhance the performance of VAWT which includes efficiency and range of operation. An experimental study for different blade shapes was carried out. It has been investigated to obtain different values of TSR(?), power coefficient(Cp), and turbine speed ratio(Vt) using measurement instruments and mathematical formulations. Furthermore, seven rotors' performance has been compared and identified between their results to validate the best model. Power coefficient (Cp) obtained as a function of the turbine speed in order to determine the best sectional airfoil...