Technicians equip solar energy panels on the Theme Pavilion for 2010 World Expo in east China's Shanghai Municipality, Feb. 3, 2010. More than 80% of Shanghai World Expo Site is lit with energy-saving LED lights to highlight the China's largest model district of solar cells application. About 60% to 70% of the carbon dioxide emission is to be set off as electric, super capacitor and hydrogen vehicles are put into use as well during the expo, according to experts. (Xinhua/Niu Yixin)