TAIF: Two students at Taif University in Saudi Arabia have invented a robot that improves the efficiency of solar panels by more than 14 percent by keeping them clean and dust free. The technology developed by Ahmed Fayez Ahmed Mohammed and Ahmed Ali Zayed Oudha, who are studying electrical engineering, addresses the problem of decreased efficiency in the production of electricity by photovoltaic solar panels caused by harsh environmental conditions, including the build up of dust, which can be particularly problematic in desert environments.To counter this, they created a high-performance, cost-efficient smart robot that prevents the accumulation of dirt and dust on the panels. It has sensors that allow it to move across the surface of the panels and accurately detect and remove any buildup. They also prevent the robot from wasting energy operating when the panels are not generating power — for example at night or on cloudy days. The cleaning mechanism uses cylindrical brushes and a high-performance fan.The students worked on the project under the supervision of Dr. Mohammed Salahuddin Mohammed Suleiman and Dr. Musleh Al-Harthy, the dean of the engineering faculty.