China Coal Enterprise Efficiency Evaluation And Analysis Of Influencing Factors

The coal industry is China’s traditional energy industry and an important part of China’s national economy.The extensive development of the coal industry has caused a series of problems such as overcapacity,unbalanced supply and demand,and severe environmental damage.Today,China’s economy has entered a new normal,supply-side structural reforms are advancing simultaneously with the energy revolution,and deep-seated contradictions such as coal industrial structure,enterprise management and development concepts continue to emerge.Efficiency has important practical significance.From the perspective of micro-coal enterprises,this paper selects 16 listed companies whose main business scope is coal or related products in the list of China’s top 50 coal enterprises,and which takes coal mining and comprehensive utilization as the main research object.First,the Super-SBM model is used to analyze the static efficiency of coal enterprises from the perspective of technical efficiency and pure technical efficiency.Secondly,the dynamic change trend of total factor productivity of coal enterprises is studied using GML method.Finally,the influencing factors of coal enterprises are discussed with Tobit regression model.Empirical research shows that:(1)Overall,the technical efficiency of the coal industry represented by 16 coal companies has not reached an effective level,and the changes during the four years are more volatile,and the efficiency value first decreases and then rises.Pure technical efficiency shows a continuous downward trend,but its efficiency value remains at an effective level.(2)Judging from the dynamic changes,most coal enterprises have increased their total factor productivity.After decomposing the total factor productivity,it is found that the reasons for the efficiency improvement of each coal enterprise are different,but in general,technological progress is the main reason.(3)Research on influencing factors shows that asset-liability ratio and environmental protection investment are negatively correlated with corporate efficiency,asset size and employee education level are significantly positively correlated with corporate efficiency,and the economic development level of the location of the company has no significant effect on efficiency.Finally,combined with the research results,policy recommendations are proposed and future research prospects are made.