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Decomposition of Aggregate Energy and Gas Emission Intensities for Industry: A Refined Divisia Index Method

Abstract:
Several methods for decomposing energy consumption or energy-induced gas emissions in industry have been proposed by various analysts. Two commonly encountered problems in the application of these methods are the existence of a residual after decomposition and the handling of the value zero In the data set. To overcome these two problems, we modify the often used Divisia index decomposition method by replacing the arithmetic mean weight function by a logarithmic one. This refined Divisia index method can be shown to give perfect decomposition with no residual. It also gives converging decomposition results when the zero values in the data set are replaced by a sufficiently small number. The properties of the method are highlighted using the data of the Korean industry.

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Energy Specializations: Energy Efficiency; Energy and the Environment – Climate Change and Greenhouse Gases; Energy and the Environment – Policy and Regulation

JEL Codes: Q41: Energy: Demand and Supply; Prices, Q40: Energy: General, Q54: Climate; Natural Disasters and Their Management; Global Warming, Q35: Hydrocarbon Resources

Keywords: Decomposition analysis, Divisia index method, Korea, energy intensity, industrial energy demand

DOI: 10.5547/ISSN0195-6574-EJ-Vol18-No3-3

Published in Volume18, Number 3 of the bi-monthly journal of the IAEE's Energy Economics Education Foundation.

 

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