Decomposition of CO_2 intensities from use of energy:case of Thai industry between 1981 and 2000

摘要

Industry consumes about 30% of total final energy demand in Thailand and is a major source of CO_2 emission from energy use.CO_2 emission from the industrial sector has increased as a result of high growth in energy demand.This paper analyses the changes in CO_2 intensity arising from energy use over a period of 20 years(1981 to 2000)and identifies the factors affecting the changes using Log-mean Divisia decomposition technique.The analysis is carried out in four phases and the results indicate that although CO_2 emission has more than tripled,the CO_2 intensity has marginally declined if renewable energies are considered as carbon non-neutral(marginally increased in the other case).An increase in energy intensity and a switchover to carbon intensive fuel mix were two major factors affecting CO_2 intensity adversely.During the economic crisis of 1996-1998 and its aftermath,CO_2 intensity of industrial energy use declined marginally.