Chinese cities are 'worst' for CO2

SINGAPORE - Chinese cities have the highest carbon emissions per capita and energy consumption per unit of GDP in Asia, while Singapore is the region's greenest metropolis, a study released by the German engineering company Siemens and the Economist Intelligence Unit showed on Monday.

Shanghai, Guangzhou and Beijing have the highest levels of CO2 emissions per capita among the 22 cities measured by the Asian Green City Index, which evaluates the environmental performance of major Asian cities in eight categories - CO2 emissions, energy, buildings, transport, water, waste and land use, air quality and environmental governance.

Shanghai emitted CO2 of 9.7 tons for each person annually, well above the average of 4.6 tons. The city also has the highest energy consumption per unit of GDP at 14.8 megajoules (MJ) for each dollar, whereas the average is 6.0 MJ a dollar.