Measuring energy efficiency progress in the EU: the energy efficiency index ODEX

Didier Bosseboeuf, ADEME
Bruno Lapillonne, Enerdata
Wolfgang Eichhammer, Fraunhofer ISI

Keywords

monitoring, energy efficiency indicators, energy service directive, E.U.

Abstract

In the framework of the SAVE-ADEME project ODYSSEE, gathering 15 national energy efficiency agencies, a methodology has been developed over the past ten years to monitor energy efficiency at national and sectoral levels. From the 200 energy efficiency and CO 2 indicators available in this database, we have recently developed an "aggregated bottom-up energy efficiency index", called "ODEX". It has been conceived in order to meet the political need for monitoring energy efficiency and to have an easily understandable, workable and comparable indicator depicting the energy efficiency progress in EU Member States.

This index is obtained by aggregating the unit consumption changes observed for a given period at detailed end-use levels. Using relevant physical parameters, the ODEX-indicator provides a good "proxy" of the energy efficiency progress from a policy evaluation viewpoint. ODEX is an alternative to monetary energy intensities, which include many factors that are not directly linked to energy efficiency. Results at the EU-15 level and by country at national and sectoral level are presented for the period 1990-2002. Comparison with energy intensities and further methodological improvement are discussed as well as the possible use of ODEX for monitoring the 1% energy efficiency target of the "Energy Service Directive".