18 Other current and non-current liabilities

Other current liabilities, amounting to €51 million (€88 million at 31 December 2013), and Other non-current liabilities, amounting to €276 million (€691 million at 31 December 2013), break down as follows:

Liabilities from regulated activities, amounting to €180 million (€344 million at 31 December 2013), relate to:

• the transportation segment (€135 million) due to the transportation revenue invoiced in excess of the restriction established by the Regulator and penalties charged to users who exceeded the committed capacity; this amount is to be returned through tariff adjustments pursuant to AEEGSI Resolution No. 166/05. The current and non-current portions amount to €16 million and €119 million respectively (€41 million and €107 million at 31 December 2013);
• the storage segment (€45 million) due to payments for balancing and stock replenishment, to be returned to service users pursuant to Resolution No. 50/06 of the Authority. The current and non-current portions amount to €26 million and €19 million respectively (€17 million and €179 million at 31 December 2013).

Liabilities arising from the market valuation of derivative financial instruments in existence at 31 December 2014, amounting to €10 million (€7 million at 31 December 2013), are detailed in Note 11 – “Other current and non-current assets”.

Other liabilities of €137 million (€428 million at 31 December 2013) include:

• prepaid revenue and income (€31 million) relating mainly to the current and non-current portion of the prepaid fee for the concession to use fibre-optic cables given to a telecommunications operator (€2 million and €14 million, respectively).
• other liabilities relating mainly to: (i) the higher quantities of fuel gas allocated by users in previous years pursuant to Resolution ARG/gas 184/09 compared with the quantities actually used in those years, which will be equalised by reducing the quantities allocated by users (€53 million), and (ii) security deposits paid by users of the balancing service pursuant to Resolution ARG/gas 45/11 (€46 million).

The reduction in the item “Other current and non-current liabilities” compared with 31 December 2013 (€452 million) is mainly due to the recording of “Trade and other receivables” net of the relative liabilities recognised in relation to strategic gas withdrawals made by some users in 2010 and 2011, for which the fees set by the Authority have not been paid and the quantities withdrawn have not been replenished within the timeframes set forth in the Storage Code. For more details, see Note 8 – “Trade and other receivables”.