Unmanned Aerial Vehicles (UAV), are planned to use solar energy, are being more common and interesting gradually. Today, these systems are very promising while fossil fuels are diminishing rapidly. Academic research is still being conducted to develop unmanned aerial systems which will store energy during day time and use it during night time. Development of unmanned aerial systems, which have eternal flight or very long loiter periods, could be possible by such an energy management. A UAV, which can fly very long time, could provide many advantages that cannot be obtained by conventional aircrafts and satellites. Such systems can be operated as fixed satellites on missions with very low cost in circumstances that require continuous intelligence. By improving automation systems these vehicles could be settled on operation area autonomously and can be grounded easily in case of necessities and maintenance. In this article, the effect of solar powered UAV on operation area has been done a literature review, to be used in surveillance and reconnaissance missions.