Study on the Measurement of Energy Efficiency Potential in China

Treating the factors influencing environment as undesirable outputs within a production framework,assuming that only energy consumption as an input is a controllable factor,a total factor energy efficiency model based on data envelopment analysis(DEA) is established in this paper,the potential of energy efficiency in China's regions or provinces under different energy efficiency and converging energy efficiency is measured.The results obtained show that energy efficiency is still very low in china at present,energy wastes about 50% each year and it is a great quantity.The potential of energy efficiency in China is about 8 billion tons of standard coal from 2006 to 2010 and 11 billion tons of standard coal from 2011 to 2015.This paper also analyses the energy savings,and gets a conclusion that actual energy savings is only 10% of measured energy efficiency during the period of the Eleventh-Five-Year Plan.At last,some suggestions for the improvement of energy efficiency were put forward also.