Boundary and Indicators

Except as stated otherwise, the data and other information in the 2012 Sustainability Report refer to the Terna Group, that is to say the boundary which includes Terna S.p.A. and the companies that were consolidated in the Consolidated Financial Statements for the year ending 31 December 2012. In accordance with the GRI Boundary Protocol, the information included in the Sustainability Report includes all the companies with a significant impact on sustainability (i.e. by size, that is to say, number of employees and by potential impact on the environment and society, that is to say the number of operations/activities which took place during the year), over which Terna S.p.A. exercises, directly or indirectly, control, that is to say has the power to determine the financial and operational policies. There are no relations with joint ventures, subsidiaries or leased businesses that could significantly influence the boundary or the comparability of the environmental and social data.

The data was calculated precisely on the basis of the entries in Terna’s general accounting and other information systems. In the case of estimates used to determine indicators, the procedure followed is stated.

All the GRI indicators published are listed below in the Index of the GRI content, which also includes any limitations relative to the requirements of the Reporting Guidelines. The list also includes the core indicators, necessary for the application of the Guidelines at Level A, which are not applicable to Terna.

In comparing this Report to the 2011 one, the following should be noted:

  • the change in the method of calculation of the EU12 indicator relative to grid losses compared to energy transported. The figure presented in this Report is based - unlike previous years - on direct measurement of the energy put in and taken out of the transmission grid. On the other hand, in previous publications the measurements were the result of a division of overall losses of the electricity system (also including distribution grids) proportionally to the voltage levels, starting from calculations made that assumed particular grid configurations.