Industrial Energy Efficiency in China(1987-2005)——Trend,Conservation Potential and Influential Factors

In this paper,14 industrial sectors' energy efficiencies and losses are studied using DEA based on a detailed accounting of industrial capital stock.It indicates:(1)Overall,energy efficiency in every sector has been improved.As a matter of fact,this improvement was not continuous,while there was a U type changing between 1990 and 1995.(2)There is not convergence tendency between industries' energy efficiency although all industrial sectors' energy efficiencies are rising.(3)As industrial energy efficiency improving,the absolute amount of energy is still large indicating great potential for energy conservation.From the perspective of energy conservation planning,two type of sectors—high efficiency high loss and low efficiency high loss—must be paid particular attention.Finally,the factors affecting energy efficiency are carried out using econometrical methods.