Except as stated otherwise, the data and other information in the 2010 Sustainability Report regard the boundary including Ternai S.p.A. and the companies that were consolidated by the direct method in the Consolidated Financial Statements for the year ended and as of December 31, 2010. In accordance with the GRI Boundary Protocol, the Sustainability Report includes all the companies on which Terna S.p.A. exercises, directly or indirectly, control. There are no relations with joint ventures, subsidiaries, or leased businesses that could significantly influence the boundary or comparability of the data.

Following the sale of its equity interest (amounting to 66% of the share capital) in Terna Participações, the Terna Group has not been present in Brazil since November 2009. Therefore, all data as of December 31, 2009 and as of December 31, 2010 regard the Group’s business activities in Italy.  

All the indicators in the Report are Group indicators.