The bladeless windmill concept offers a precise remedy for the drawbacks and problems of the traditional windmill. The principle behind the bladeless windmill is the vortex shedding effect. With less moving parts, the bladeless windmill generates electricity by the piezoelectric material by the oscillations or vibrations caused by wind. The ultimate objective of the research is to design a bladeless windmill using composites material with different properties, different shapes, and different designs and to examine the flow characteristic of the operations over the design using ANSYS. With various designs of mast such as cylindrical, tapered cylinder, and hollow tapered cylinder with three different materials of E-glass, carbon fiber, and in various lengths were compared. With the results over the design, E-glass fiber with 3 m length and solid-tapered section could produce more amount of electricity.