The innovation and upliftment in the UAV industry would have no ends. The British firms named BAE Systems and Prismatic are developing a drone capable of remaining in the sky for an entire year. This solar-powered 150 kgs aircraft with a wingspan of 35 metres will be used for surveillance and to provide communication in remote areas. Basically this Long Endurance UAV is a cheaper alternative to conventional satellite technology, and it makes use of the sun's rays during daytime to charge the battery that would allow it to operate overnight. The tests flights of this aircraft (PHASA-35, Persistent High Altitude Solar Aircraft) are expected next year.