The Terna Business Model

Terna is Europe’s most important independent grid operator for the transmission of electricity (Transmission System Operator - TSO) and is sixth worldwide in terms of kilometres of lines managed.

The Terna Group owns the Italian National Transmission Grid (NTG) with more than 57,600 kilometres of high voltage lines (more than 63,600 km three-phase power lines), 454 transformation stations and 22 interconnection lines with foreign countries (at 31 December 2011).

In Italy, Terna acts as TSO under a government concession. It is responsible for transmitting and dispatching electricity along the high-voltage and very-high-voltage grid throughout the whole of national territory. Terna is also responsible for planning, constructing and maintaining the grid.

Terna’s mission is:

  • to manage electricity transmission in Italy, guaranteeing its security, quality and affordability over time;
  • to ensure equal conditions of access to all grid users;
  • to develop market activities and new business opportunities with the experience and technical skills gained in the management of complex systems;
  • to create value for the shareholders with a strong commitment to professional best practices and with a responsible approach to the community, respecting the environment in which it operates.

The current scope of Terna’s activities is the result of a process of the liberalisation of the electricity sector that began in 1999, the year in which the system operator functions were assigned to GRTN - Gestore della Rete di Trasmissione Nazionale, a company under public control. In November 2005, Terna, already the owner of almost all the National Transmission Grid, acquired from the latter the functions of grid operator, with the related human resources and assets, as established by Prime Ministerial Decree of 11 May 2004. The unification of the ownership of the grid (apart from small residual portions) and its management have coincided with Terna’s independence from the Enel Group to which it previously belonged. Terna today faces the market with complete independence of strategy and management, on the strength of the technical skills it has acquired in the past: it is therefore both innovation and tradition at the same time, two values that often accompany its development prospects.