Photo taken on August 23, 2009 shows 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 east China's Shanghai Municipality. 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 Shanghai-Expo 2009 Theme Pavilion, with gross power output totaling 2.5 megawatts. [Xinhua]