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Energy intensity of industrial sector
In 2010, the energy intensity of the industrial sector in the Brussels-Capital Region amounted to an average of 178 MWh per million euro of added value in volume. The thus calculated industrial energy intensity reached a peak in 2002 and saw a steady and significant decline from then on, amounting to - 27% between 2002 and 2010.
Energy intensity is the relationship between the amount of energy a sector consumes and a variable that represents this sector. Hence, a higher energy intensity corresponds to a higher energy consumption per unit of the variable considered.
In order to estimate the energy intensity of the economic activities, two approaches are used: the number of employees or the production (added value). As the industrial sector is characterised by a high level of mechanisation, preference is given to the second approach. The energy intensity of the industrial sector is therefore calculated based on the data on the added value in volume. These provide a better representation of the quantities produced than the data on the added value at current prices, as the latter are subject to inflation.
Evolution of the industrial energy intensity
Evolution of the industrial energy intensity (compared to the added value in volume expressed in millions of chain-linked euros) in the Brussels Region, with and without climatic correction of the energy consumption
Source : Regional energy balances 1990-2011 and BISA, calculations by Bruxelles Environnement-Leefmilieu Brussel
As a reminder: the climatic correction is aimed at identifying the influence of the meteorological characteristics for the relevant year and therefore at giving an idea of the evolution of the energy consumption at a constant climate.
In 2010, the average energy intensity of the industrial sector in the Brussels-Capital Region amounted to 178 MWh per million euro of added value in volume (under the actual climate conditions).
In terms of evolution over time, the thus calculated industrial energy intensity reached a peak in 2002 and saw a steady and significant decline from then on, amounting to - 27% between 2002 and 2010.
Several factors can explain this evolution:
The recent evolution of the Brussels' industrial activity is a primary factor: there was a simultaneous drop in the activity (gross added value) and in the energy consumption of certain sub-sectors that are representative of the industrial activity within the BCR.
Furthermore, the evolution can be attributed to the improvement of the building stock (including e.g. insulation of buildings, new constructions which perform better in this respect), enhanced energy efficiency of the equipment used, or the effect of energy-saving behaviours, whether imposed (for instance because of the rising energy prices) or not.