UAVs have acquired new forms, functions, models and even a unique exterior. Currently, unmanned aircraft systems use a variety of power supply devices. UAVs must be energy efficient and energy losses must be minimized. The dimensions should be compact and the weight minimal. One of the conditions for the minimum weight of a UAV is the use of renewable energy sources. The piezoelectric material will be placed directly on the wings of the UAV. Depending on the amount of electricity consumed by the UAV, the surface area of the piezoelectric material will be determined. The rain effect will be created on a piezoelectric material mounted on the wings of the UAV. That is, due to the fact that the wings of the UAV are constantly exposed to air flow while the UAV is moving, the impact elements attached to the small fins installed there will cause small shocks to the wings, creating the effect of rain and, as a result, electricity. By installing piezoelectric materials in the UAV, the service life of the UAV will be extended. Unlike UAVs that have solar panels, piezoelectric materials will provide additional electricity at any time, not just during the day. Since there is always air flow when the UAV moves in the upper atmosphere, piezoelectric materials will continuously supply the UAV with energy.