关键词: 三阶段DEA, 主要耗能行业, 能源效率, 新疆

Abstract: In recent years, the contradiction between economic development and resources and environment has become increasingly acute, China’s future economic development is bound to face the serious challenge of short-term energy, therefore, improving energy efficiency is the top priority of the energy saving in Xinjiang and even in China. This paper employs three-stage DEA model to analyze the energy efficiency of the 12 energy-consuming industries in Xinjiang in 2010. The results show that the scale efficiency is overestimated before eliminating external factors and environment variables while pure technical efficiency is underestimated, and the overvalued level is higher than the undervalued level, which eventually led to the fact that the technical efficiency value is overrated. The scale returns of main energy-consuming industry in Xinjiang are increasing, which shows that the energy utilization is too small to reflect the economy scale. From the industry perspective, the energy efficiency of Extraction of Petroleum and Natural Gas and Oil Processing, Coking and Nuclear Fuel Processing are DEA effective. Based on the above, suggestions are put forward as follows: to speed up the development of small and medium-sized enterprise, increase scientific research funds investment, improve the management efficiency of state-owned enterprises, accelerate the reform of energy prices.

Key words: Three-stage DEA Model, Main Energy-consuming Industries, Energy Efficiency, Xinjiang