This study presents an innovative method for improving the local wind power potential around a vertical axis wind turbine (VAWT). The idea is an external simple structure constructed by four vertical cylinders with a square arrangement which is embedded around the VAWT. The ratio of the cylinders diameter to the virtual VAWT rotor diameter, d/D, varies between the 1/10 and 1/4. On the other hand, the ratio of the corresponding gap space between the two adjacent cylinders of the external structure to the rotor diameter, G/D, is considered 1.5 and 2.0. The obtained numerical results show that existing of the considered external structure around the VAWT develops a region with an enhanced velocity magnitude around the turbine rotor. In addition, it is revealed that maximum 27.6%, 24.3%, and 23.6% enhancements in the wind flow potential are obtained corresponding to the undisturbed wind flow of 1, 2, and 3 m/s, respectively.