The disclosure relates to an airfoil body for an aircraft extending from an inner end to an outer end, and between a leading edge and a trailing edge. The airfoil body comprises an internal structure and a skin covering the internal structure. The skin has a pressure side and a suction side, and the suction side includes a light transmitting portion. The internal structure includes an array of solar cells configured to receive solar light through the light transmitting portion. The present disclosure further relates to wings and aerial vehicles.