Research on the Evaluation of Operating Efficiency of Chinese Coal Enterprises under the Background of"Dual Carbon"——Based on DEA and Malmquist Index Model
In the context of"Dual Carbon",China's coal resources,as a basic energy source,are facing unprecedented challenges and need to be transformed.Based on the data envelopment analysis DEA-BCC model and Malmquist index model,this paper conducts a static and dynamic analysis of the operating efficiency of 19 listed companies in China's coal mining and washing industry from 2018 to 2022.The results show that the total number of coal enterprises with effective comprehensive efficiency in each year is less than half of the number of sample enterprises,and the low comprehensive efficiency of coal enterprises is mainly affected by the low pure technical efficiency.Through the analysis of M index,it is found that M index is in a fluctuating upward trend as a whole,increasing by 12.77％in recent years.In view of this,some suggestions are put forward from the four aspects of production,resources,operation and low carbon.
coal enterprisesbusiness efficiencyDEA modelMalmquist index
NETL
NSTL
万方数据
