چکیده:
The aim of this research is to decompose energy intensity in Iran's manufacturing industries. The decomposition of energy intensity into structural effect and intensity effect is performed for the entire industry and Iran's 9 industrial sectors using the Laspeyres index and the arithmetic mean Divisia index. To this end, data from the Statistical Center of Iran for industrial workshops with 10 or more workers during the period 1374 to 1386 were used. From a conceptual perspective, the structural effect is the effect resulting from changes in the composition of value-added industrial activities, and the intensity effect, as the effect resulting from changes in net energy intensity, is considered a suitable tool for measuring energy efficiency from total energy intensity. The results show that in the overall industry, the intensity effect has a larger share in total effect changes compared to the structural effect. In most industries, the intensity effect has been more influential than the structural effect, and in some cases, both effects have been influential; in most cases, the intensity effect has moved towards reducing energy intensity.
خلاصه ماشینی:
Classification JFL:Q 43,L60 Keywords: Energy intensity decomposition, structural effect, intensity effect, Laspeyres index, Divisia index (*)-Corresponding author 1-Introduction The importance of energy in recent decades has caused it to be considered one of the factors of production alongside labor and capital, playing an important role in the country's economic issues.
In this study, more attention was paid to the general parametric Divisia method, and the results indicate that sectoral energy intensity changes play an important role in the fluctuations of total energy intensity in India's manufacturing industries compared to changes in the production structure of activities.
Table 3- Technical coefficients of industrial activities (Refer to the page image) Source: Research calculations and input-output tables of 1356 and 1380 Energy intensity in all industrial activities By observing the decomposition of industrial energy intensity using the Laspeyres and Divisia methods, it can be seen that from the year 1347 to 1377, the structural effect has moved towards increasing energy intensity (it is greater than one).
Table 4- Decomposition of industrial energy intensity using Laspeyres and Divisia (AMDI) methods 1 (Refer to the page image) Source: Research calculations Considering the discussions presented in the statistics and information section, industrial energy consumption is increasing, while the intensity of final energy consumption has taken a gentle rhythm in the late period under study.
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