Analysis of influential factors of energy intensity in China based on C-D cost function

This paper first uses the time series data from 1990 to 2009 to do an empirical analysis of the relation between our country's energy intensity and energy prices.Then on the basis of the C-D cost function,we added the industrial structure,the energy structure and the labor productivity factors to it,expanded the model of the energy intensity influencing factors from a microcosmic level,and estimate the different influencing effects on the energy intensity using the ridge regression method.Then we concluded that the affect degree between the change of energy structure and industrial structure on the change of energy intensity is relatively big;the rising of energy prices and technical progress have an effect on the decrease of energy intensity to some extent.Therefore,the government department must speed up to promote the adjustment of industrial structure and energy structure,push forward the development and utilization of energy saving technology,and complete the energy price system.