The drag-based vertical-axis Savonius wind rotor is a potential candidate for harvesting renewable energy. It is very simple in design and can be deployed as an off-grid electricity system in remote locations having no access to electricity. The present work aims to develop a novel blade profile for the Savonius rotor in order to improve its performance. In that connection, an arc-elliptical-blade profile has been developed and rotor performance has been assessed through wind tunnel testing at three different Reynolds numbers (Re = 87,039, 107,348, and 131,066). Further, its performance is compared to that of a conventional semicircular-bladed rotor under identical test conditions. The experiments revealed the maximum power coefficient (CPmax) of 0.11, 0.162, 0.213 at Re = 87,039, 107,348, and 131,066, respectively, for the arc-elliptical-bladed rotor. To complement the experimental findings and to examine the flow behavior around the rotor blades, the computational fluid dynamics (CFD) simulations have also been performed using ansys fluent software. The local torque is found to be greater around the advancing arc-elliptical blade than around the advancing semicircular blade. It has also been noticed that the pressure distributions over concave sides are similar regardless of the blade shape.