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Energy intensity developments in 40 major economies: Structural change or technology improvement?

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  • De Cian, Enrica
  • Schymura, Michael
  • Verdolini, Elena
  • Voigt, Sebastian

Abstract

This study analyzes energy intensity trends and drivers in 40 major economies using the WIOD database, a novel harmonized and consistent dataset of input-output table time series accompanied by environmental satellite data. We use logarithmic mean Divisia index decomposition to (1) study trends in global energy intensity between 1995 and 2007, (2) attribute efficiency changes to either changes in technology or changes in the structure of the economy, and (3) highlight sectoral and regional differences. We first show that heterogeneity within each sector across countries is high. These general trends within the sectors are dominated by large economies, first and foremost the United States. In most cases, heterogeneity is lower within each country across the different sectors. Regarding changes of energy intensity at the country level, improvements between 1995 and 2007 are largely attributable to technological change while structural change is less important in most countries. Notable exceptions are Japan, the United States, Australia, Taiwan, Mexico and Brazil where a change in the industry mix was the main driver behind the observed energy intensity reduction.

Suggested Citation

  • De Cian, Enrica & Schymura, Michael & Verdolini, Elena & Voigt, Sebastian, 2013. "Energy intensity developments in 40 major economies: Structural change or technology improvement?," ZEW Discussion Papers 13-052, ZEW - Leibniz Centre for European Economic Research.
  • Handle: RePEc:zbw:zewdip:13052
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    More about this item

    Keywords

    Energy intensity; Logarithmic mean Divisia index decomposition; WIOD database;
    All these keywords.

    JEL classification:

    • Q43 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Energy and the Macroeconomy
    • C43 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: Special Topics - - - Index Numbers and Aggregation

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