Research on Evaluation Model of Energy Efficiency Based on DEA

Abstract

Under the framework of total factor energy efficiency,and according to characteristics of energy system,evaluation model of energy efficiency is established based on data envelopment analysis,and empirical research of 30 regions in China is conducted.Firstly,given the current situation of no clear definition for energy efficiency,the concept of energy efficiency is defined in terms of integrative input,technical efficiency and effective output,which provides a clear conceptual framework for the study of energy efficiency.Secondly,the evaluation index system of energy efficiency is set up including total energy consumption,working stuff population and depreciation of fixed assets as inputs index,and economic output value and environmental impact as outputs index,on basis of which the evaluation index systems of energy economic efficiency and energy environmental efficiency are set up.Thirdly,the evaluation model of energy efficiency to deal with undesirable outputs is established using data envelopment analysis and principal component analysis.The results showed that: the evaluation model is suitable for the energy efficiency evaluation and system analysis in theory,and also a more reasonable examination criteria of energy efficiency for practice which can provide decision support for realizing the target of energy saving and pollution reduction and the development of relevant policies for China.

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