区域能源效率测算及影响分析——基于三阶段DEA方法

文章运用三阶段DEA方法,测算了2010~2017年间全国30个省、市能源效率,并将剔除环境要素和随机扰动影响的效率值与传统DEA分析结果进行比较。结果显示,剔除环境要素和随机扰动之前,我国绝大多数省规模效率高于纯技术效率,导致规模效率被高估,存在投入不足的情况;通过三阶段DEA结果,中国地区间规模报酬都处于递增趋势,说明企业规模大小是影响能源利用的规模不经济性的重要因素;各地区之间效率程度和作用方向不同,经济发达地区与经济欠发达地区的能源效率水平相差较大,存在明显的经济不平衡现象。因此,应加强地区之间管理与技术交流合作,推进技术进步,提高能源利用效率。

Calculation and Impact Analysis of Inter-provincial Energy Efficiency in China——Based on Three Stage DEA Method

In this paper,the three-stage DEA method is used to measure the energy efficiency of 30 provinces and cities in China from 2010 to 2017,and the efficiency values without environmental factors and random disturbance influence are compared with the results analyzed by the traditional DEA method.The results show that before the removal of environmental factors and random disturbances,the scale efficiency of most provinces is higher than the pure technical efficiency,resulting in the overestimation of scale efficiency and the lack of investment.According to the results of three-stage DEA,China's regional scale returns show an increasing trend,thus indicating that the enterprises scale is an important factor affecting the scale diseconomy of the energy utilization.There are different efficiency degrees and function directions in different regions.The energy efficiency levels are quite different between economically developed areas and economically underdeveloped areas.The economic imbalance is obvious.Therefore,the management and technical communication and cooperation among different regions are necessary,thus promoting the technological development and improving the energy efficiency.