Workers fix solar energy panels on the top floor of the Chinese Pavilion at the Shanghai Expo Site, Shanghai, east China, on July 25, 2009. 1,264 solar energy panels will be fixed on the top floor of the Chinese Pavilion, which could generate 300 kilowatt-hours of electricity per hour in the sunny days. [Xinhua]

Workers fix solar energy panels on the top floor of the Chinese Pavilion at the Shanghai Expo Site, Shanghai, east China, on July 25, 2009. [Xinhua]