Flow over bluff body (cylindrical body) results in flow-induced vibration due to flow separation and alternate shedding of vortices. This flow-induced vibration/oscillations can be used to harness wind energy by converting it into electric energy using electromagnetic technique where frequency of oscillations play important role. The goal of the present study is to experimentally investigate the vortex-induced vibration for designing a bladeless wind turbine (BWT). Cylinder is taken as BWT. Experiments are performed in wind tunnel of 410 × 410 mm test section. Measurement of oscillations of the BWT is done by a three axis accelerometer. The Vortex shedding frequency is measured by the Honeywell Differential pressure. The test results which relate the natural frequency the Oscillating frequency and the Vortex shedding frequency of model with flow speed. It is found that the Oscillations closed to natural frequency can have maximum effect for energy produced. The increase in flow velocity increases the frequency of vortex shedding, i.e., the Strouhal Frequency for stationary cylinder, in other case when cylinder is elastic the forcing frequency gets locked in with natural frequency and a “Lock in” phenomenon is observed.