A photovoltaic (PV) power system is assembled at the edge of Tengger Desert in Zhongwei City, northwest China's Ningxia Hui Autonomous Region, Dec 14, 2010. [Xinhua]

A photovoltaic (PV) power system is assembled at the edge of Tengger Desert in Zhongwei City, northwest China's Ningxia Hui Autonomous Region, Dec 14, 2010. Thanks to the ample sunshine and vastness of the desert, Ningxia has introduced PV equipment and built solar power stations to develop a whole PV industry chain. [Xinhua]