Key figures

(a)

The 2009 income statement data include the impact of consolidating Italgas and Stogit from 30 June 2009, the date the acquisition transaction was completed.

(b)

Net profit is attributable to Snam.

(c)

For a definition of net profit and reconciliation with adjusted net profit, which excludes special items, see the section “Comments on the results – Reconciliation of net profit with the adjusted figure”.

(a)

Investments for 2009 in the distribution and storage of natural gas segments, amounting to €172 and €149 million respectively, relate to the period 1 July 2009 - 31 December 2009.

(b)

Free cash flow for 2009 reflects the disbursement for the acquisition of Italgas and Stogit.

(a)

The product of the number of shares outstanding (exact number) multiplied by the year-end official stock price.

(b)

The amount for 2011, representing the balance, was estimated on the basis of the number of shares outstanding on 31 December 2011.

(a)

Profit for 2009 in the distribution and storage of natural gas segments, relating to the period 1 July 2009 - 31 December 2009.

(b)

Calculated considering the average number of shares outstanding during the year.

(c)

Return on equity (ROE) was calculated as the ratio of net profit to the average of beginning and ending shareholders’ equity for the period.

(d)

Return on investment (ROE) was calculated as the ratio of EBIT to the average of beginning and ending net invested capital for the period.

(a)

The changes indicated in the table, and in those subsequent to this Report, must be considered as changes for the year 2011 over the year 2010. The percentage changes were calculated with reference to the data indicated in the relevant tables.

(b)

Gas volumes are expressed in standard cubic metres (SCM) with an average higher heating value (HHV) of 38.1 and 39.4 MJ/SCM, respectively for the businesses of natural gas transportation, regasification and storage.

(c)

The data for 2010 have been aligned with those published in the National Transportation Network Financial Statements.

(d)

Working gas capacity for modulation, mining and balancing services. The available capacity is that declared to the Electricity and Gas Authority at the start of the thermal year 2011-2012, in compliance with Resolution ARG/gas 119/10.

(e)

Fully consolidated companies.

(f)

Employees in service in 2011 include personnel transferred following the purchase of the “ICT” and “Unbundled Companies Administrative Services” business units from Eni and Eni Adfin, respectively.