The International Energy Agency says China used 2.252 billion tons of oil equivalent in 2009 compared to the 2.170 billion tons of oil equivalent used by the USA. This oil equivalent measure covers crude oil, nuclear energy, coal, natural gas and renewable energy like hydropower. To give an idea of the scale of the increase- China's total energy use was only half of that of the USA in 1999 ten years ago. China plans to reduce emissions by cutting the carbon dioxide per unit of GDP by 40-45% from 2005 levels by 2020. But China looks at higher energy use in the years ahead. Much of the energy use is propelled by infrastructure building and energy intensive use in industries.