Although the solar panel is thin, its thickness is considerable compared to the airfoil thickness. This paper aims to evaluate the impact of adding the solar panel over an airfoil of a UAV of type AG 34, which is low camber airfoil suitable for low-Reynolds number flights. Three configurations are examined to stand on the most suitable configuration. The analysis is based on the airfoil characteristics (lift, drag, and moment) and the pressure distribution over the airfoil surface. A parametric study is conducted to study the effect of the solar panel size and position on the aerodynamic performance.