A worker walks on the solar power-generating panel roof of the Shanghai Expo 2009 Theme Pavilion, the largest of its kind in single unit which was just finished for installation, in Shanghai, on August 23. The solar power-generating panel extends to a total area of 30,000 square meters, accounting for a half of the 60,000-square-meters roof of the the Theme Pavilion, with gross power output totaling 2.5 megawatts (XINHUA) |