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ECN publication
Uncertainty in Odyssee indicators and energy savings – Development of a methodology and first results
Published by: Publication date:
ECN Policy Studies 12-12-2013
ECN report number: Document type:
ECN-O--13-045 Other
Number of pages: Full text:
29 Download PDF  

The ODYSSEE database on energy efficiency indicators ( has been set up to enable the monitoring and evaluation of realised energy efficiency improvements and related energy savings. The database covers the 27 EU countries as well as Norway and Croatia. Energy indicators that relate energy consumption to a physical output (ton of steel), a performance (person-km driven per car) or the number of energy using devices (refrigerators) can show the increase in energy efficiency realised, and the amount of energy saved. By aggregating indicators, Odyssee calculates energy efficiency indices by sector and for the whole economy (so-called ODEX), in order to evaluate overall energy efficiency progress. This work contributes to the growing need for quantitative monitoring and evaluation of the impacts of energy policies and measures, both at the EU and national level, e.g. due to the Energy Service Directive. Because of the central role of Odyssee indicators in policy evaluations it becomes more important to know how reliable the Odyssee figures are, or in other words, what is the uncertainty margin for the indicator values and the related savings. This report presents a first analysis of uncertainty margins in the indicators and savings figures. The work builds on earlier work in the preceding Odyssee project with regard to the quality of input data used in Odyssee.

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