The blade profile of the Savonius hydrokinetic turbine has a significant effect on the performance of the rotor. Many previous numerical and experimental research suggested different blade profiles. In the present work, a similar recommended blade profile selected, and two different configurations were namely, i. sharp edge outside and ii. sharp edge inside. The results were compared with the conventional rotor. The investigation concludes that a sharp edge outside delivers better performance than a sharp edge inside and traditional rotor. The best configuration was further tested for different wave amplitudes, i.e. P/λ. The waves on the blades further enhance the performance of the rotor. Compared to a previously proposed design, the present modified configuration indicated a 31% improvement in power coefficient and a 37% improvement compared to the conventional design.