Energy consumption
Specific Energy Consumption

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Index of specific energy consumption 1 *
in % basierend auf kWh/Tonne (2010 = 100 %) 2012 2013 2014 2 Chrange from 2013 in % Change from 2010 in %
Clay blocks 3 88 85 79 – 7 – 21
Roof tiles 4 100 98 94 – 4 – 6
Facing bricks 100 103 100 – 3 0
Ceramic pipes 5 88 85 84 – 1 – 16
Ceramic production 96 93 90 – 3 – 10
Plastic pipes 98 97 98 + 1 – 2
Concrete pavers 96 95 89 – 6 – 11
Wienerberger Group 94 93 89 – 4 – 11

1 For reasons of precision, the combined indices of the individual product groups were adjusted accordingly; the calculation is now based
on absolute figures. Total energy consumption comprises energy consumed in production, but excludes administration.
2 Tondach Gleinstätten not included.
3 Coal used as a fuel in one brick plant is now shown in a three-year trend.
4 Due to the correction of the production volume of a single roof tile plant, the previous year’s figures were restated.
5 The reference base used by all business units is net additions to stocks, except for Steinzeug-Keramo, which uses kiln capacity as a
reference base for production volumes.

11% reduction of specific energy consumption compared with reference year 2010

The table on specific energy consumption shows the development of the individual product groups over time. In this report, the index of specific energy consumption (based on kWh/ton) refers to 2010 as the base year for the definition of our targets to be achieved by 2020. The Wienerberger Group continued to make good progress in 2014: specific energy consumption was reduced by 11% against the reference year 2010 and by 4% compared with 2013.

Reduction of specific energy consumption in almost all product groups

The significantly increased energy efficiency of the Wienerberger Group resulted in a further reduction of specific energy consumption in almost all product groups. The greatest success was achieved in clay block production, where specific energy consumption was reduced by 21% compared with the reference year 2010 and by 7% compared with 2013. Thus, the 2020 target for clay blocks was already achieved in 2014. In facing brick production, specific energy consumption dropped by 3% compared with 2013, which is due, inter alia, to investments in the optimization of production processes. In ceramic production as a whole, specific energy consumption was reduced by 10% compared with the reference year 2010 and by 3% compared with 2013. Satisfactory development has also been seen in concrete paver production, with specific energy consumption reduced by 11% from the reference year 2010 and by 6% from 2013.

Index of specific energy consumption also reported per m² for roof tiles and facing bricks

The Clay Building Materials Europe Division is currently working on the development of new roof tile and facing brick products, one of the objectives being to increase resource efficiency and to further improve the product properties. Material input in production is being reduced at the same time. To date, the index of specific energy consumption has been calculated as the energy consumed per ton produced. In order to record the energy efficiency increases and the reduction of material input in the production of roof tiles and facing bricks, the index of specific energy consumption for these two product groups is now also shown per square meter of product surface.

Index of specific energy consumption CBME 1*
in % basierend auf kWh/m2 (2013 = 100 %) 2013 2014 2 Change from 2013 in %
Roof tiles 100 95 – 5
Facing bricks 100 93 – 7

1 Clay Building Materials Europe
Total energy consumption comprises energy consumed in production, but excludes administration.
2 Tondach Gleinstätten not included.

The index of specific energy consumption per square meter of surface produced shows reductions of 5% in roof tile production and 7% in facing brick production, compared with 2013.

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