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Account for sector heterogeneity in China's energy consumption: Sector price indices vs. GDP deflator

Chunbo Ma ()

Energy Economics, 2010, vol. 32, issue 1, 24-29

Abstract: A common practice in decomposition analyses is to deflate output indicators to purge the impact of inflation by using a general deflator. This practice fails to account for sector heterogeneity and can be hazardous. Although the general identified patterns are largely correct, the calculated magnitudes can be misleading or even wrongly signed. Instead, it is strongly recommended that sector heterogeneity is accounted for by using individual sector price indices for all relevant sectors instead of one general (GDP) deflator. This paper analyzes this advanced decomposition using Chinese data and compares to the usual method of using only one deflator. It is found that while most differences are only of quantitative quality, some show even a qualitative difference. Furthermore, the rising energy intensity in the early 2000s, which has been discussed by previous studies, vanishes completely.

Keywords: Decomposition; GDP; deflator; Price; indices; Heterogeneity; China (search for similar items in EconPapers)
Date: 2010
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