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6 Use of raw materials and consumables (net of changes in inventories of raw materials and stock)

 1st half 20121st half 2011Changes
Methane ready for sale and LPG net of change in stock688,167485,274202,893
Electricity ready for sale635,226 564,210 71,016
Maintenance materials: handling and spare parts net of change
in stock
White, grey and green certificates 21,37823,937(2,559)
Water18,57417,097 1,477
Electricity for industrial use14,55610,842 3,714
Fuels and lubricants8,1326,869 1,263
Chemical products7,2147,006208
Consumables and sundry 5,7466,159(413)
Methane for industrial use4,5372,738 1,799
Fuels for heat generation3,2642,959305
Income and charges from derivatives (9,351)(13,857) 4,506
Income and charges from certificates measurement (19,761)(16,403)(3,358)
Total 1,399,806 1,122,021277,785

Please see the Directors' report and notes showing information by business segment for the analysis of trends in the costs of raw materials and the consumables. Please refer to note 21 of the statement of financial position for the item "Charges and revenues from derivatives".

The most substantial changes with respect to the same period of the previous year are described below.

"White, grey and green certificates," includes the cost for the acquisition of white, gray and green certificates incurred in 2012 of EUR 21,378 thousand (EUR 23,937 thousand as at 30 June 2011), in particular:

  • white certificates, EUR 4,280 thousand (EUR 9,376 thousand as at 30 June 2011);
  • grey certificates, EUR 2,660 thousand (EUR 10,163 thousand as at 30 June 2011);
  • green certificates, EUR 14,438 thousand (EUR 4,398 thousand as at 30 June 2011).
    The change, compared to the corresponding previous period, is due to the different procurement trends with respect to the requirement of certificates by the Group.


"Maintenance materials: management and spare parts net of changes in stocks," have decreased compared to the previous year mainly on account of a reduction in investments which are analyzed in further detail in the Directors' Report.

Item "Electricity for industrial use" reported an increase due to price increase of raw materials communicated by the Italian Authority for Electricity and Natural Gas in the first months of 2012. Item "Methane for industrial use" has increased due to higher consumption resulting from both new users of district heating, connected during the second half of 2011 and the first half of 2012, and price increases of raw materials.
Item "Income and charges from certificate measurement" includes the results of fair value measurement of the following certificates:

  • green, revenues of EUR 20,621 thousand (EUR 13,091 thousand as at 30 June 2011);
  • grey, expenses of EUR 860 thousand (income of EUR 3,312 thousand as at 30 June 2011).
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