Climate Change 2001:
Working Group III: Mitigation
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Figure 3.13e: Relative levels of energy efficiency for selected industrial sectors in various countries. The aggregate energy efficiency index (EEI) is calculated as: EEI = (Si Pi ·SECi)/( Si Pi · SECi,BP), where Pi is the production volume of product i; SECi is the specific energy consumption for product i, and SECi,BP is a best-practice reference level for the specific energy consumption for product i. By applying this approach a correction is made in order to account for structural differences between countries in each of the tracked industrial sectors. A typical statistical uncertainty for these figures is 5%. Because of statistical errors higher uncertainties may occur in individual cases.

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