Figure

Energy efficiency improvement (ODEX) in EU-27 countries

Figure Created 21 Mar 2012 Published 03 Apr 2012 Last modified 29 Nov 2012

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Topics: Energy

Energy efficiency index of industry (ODEX) is a weighted average of the specific consumption index of 10 manufacturing branches; the weight being the share of each branch in the sum of the energy consumption of these branches in year t and the sum of the implied energy consumption from each underlying industrial branches in year t (based on the unit consumption of the sub-sector with a moving reference year).

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Metadata

Methodology:: See indicators ENER025
Units:: Percent
Rights:: EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, provided that the source is acknowledged (https://www.eea.europa.eu/legal/copyright). Copyright holder: European Environment Agency (EEA).
Owners:: European Environment Agency (EEA)
Figure type:: Graph

Additional information

The 10 branches considered in the calculation are: chemical, steel, non ferrous, cement, other non metallic, paper, food, machinery, transport equipment and textile.

For steel, cement and paper, energy savings are calculated using specific consumption per tonne produced; for the other branches, the indicator used is the ratio on energy consumption related to production index.

ODEX is equivalent to the ratio between the actual energy consumption of the sector in year t and a fictive consumption without energy savings in the 10 branches;

These energy savings are measured from the sum of the energy savings in the 10 branches; for each branch, the energy savings is calculated from the reduction in the specific energy consumption

The variation of the weighted index of the unit consumption between t-1 and t is defined as follows:

The value at year t can be derived from the value at the previous year by reversing the calculation: It /It -1= 1/( It -1/It),

ODEX is set at 100 for a reference year and successive values are then derived for each year t by the value of ODEX at year t-1 multiplied by It /It -1.

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Older versions

08 Aug 2011 - Energy efficiency improvement (ODEX) in EU-27 countries

14 Sep 2010 - Energy efficiency index (ODEX) in industry by country

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