中国省级绿色全要素能源效率测度及技术差距研究——基于共同前沿的非径向方向性距离函数估算

Research on the Provincial Green Total Factor Energy Efficiency Measurement and Technology Gap in China: Based on Meta-Frontier Non-Radial Directional Distance Function

基于不同区域生产技术异质性的考虑,构建影响绿色能源效率的综合指标体系,运用共同前沿非径向方向性距离函数测度2006-2016年中国30个省区市(不包含西藏和港澳台)整体及4个组的绿色全要素能源效率。研究发现:(1)区域聚类结果并不完全体现地域性;(2)无论是基于共同前沿还是组前沿,中国绿色全要素能源效率整体上偏低,存在较大提升空间;(3)组前沿下测算的绿色全要素能源效率往往被高估,共同前沿测度出的能源效率反映了潜在的提升空间;(4)组间的能源效率差异明显,绿色发展较好组所含省区市的能源效率远超其他组,代表了中国当前最高的能源利用水平;(5)测度出的各省区市潜在节能量可以为国家制定逐步节能目标提供参考。

Based on the heterogeneity of production technology in different regions, the comprehensive index system of affecting green energy efficiency is constructed and the 31 provinces and cities of China are clustered into four groups. Then, the meta-frontier non-radial directional distance function is used to measure the green total factor energy efficiency of 30 provinces and cities and the four groups in China from 2006 to 2016. The results show that: firstly, regional clustering results do not fully reflect regional characteristics. Secondly, whether it is based on meta-frontier or group-frontier, the provincial green total factor energy efficiency is still low overall, and there is a large room for improvement. Thirdly, the green total factor energy efficiency under the group-frontier is often overestimated, and that under the meta-frontier reflects the potential improvement space. Fourthly, the green total factor energy efficiency difference between the groups is obvious. The provincial energy efficiency in the better green development group is far higher than other groups, which represents the highest energy utilization level in China. Finally, the provincial potential energy savings provide a reference for the country to formulate gradual energy-saving targets.