Using a network DEA model to assess the energy efficiency of regions in China

Abstract

This paper assesses 30 provinces’ data in China by using a network DEA model with undesirable output. The results denote that the proposed model could evaluate the internal energy consumption well. And the main cause of the energy inefficiency is environmental inefficiency. Therefore, China’s provinces should tighten restriction on CO2 emissions and reduce their dependence on fossil fuels by using more green energy.