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

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  • B. W. Ang
  • Ki-Hong Choi

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.

Suggested Citation

  • B. W. Ang & Ki-Hong Choi, 1997. "Decomposition of Aggregate Energy and Gas Emission Intensities for Industry: A Refined Divisia Index Method," The Energy Journal, , vol. 18(3), pages 59-73, July.
    • Handle: RePEc:sae:enejou:v:18:y:1997:i:3:p:59-73
    DOI: 10.5547/ISSN0195-6574-EJ-Vol18-No3-3
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    References listed on IDEAS

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    1. Choi, Ki-Hong & Ang, B.W. & Ro, K.K., 1995. "Decomposition of the energy-intensity index with application for the Korean manufacturing industry," Energy, Elsevier, vol. 20(9), pages 835-842.
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