Supplementary document to the 2011 Development Plan

On 1 July 2011, the Ministry for Economic Development was sent the supplementary document to the 2011 Development Plan in relation to the diffused electricity accumulation systems drawn up in accordance with Italian Legislative Decree no.28 of 3 March 2011, which establishes that the interventions envisaged by Terna may include diffused accumulation systems of electricity with a view to facilitating the dispatching of non-programmable plants.

This document describes the reference framework, the forecasting scenarios and the new development demands, with particular attention paid to the installation of diffused accumulation systems able to provide maximum input to the system security and the reduction of congestion on the portions of grid to which the non-programmable renewable sources refer, with specific reference to the critical issues seen on the portions of grid most affected by the repeated development of the non-programmable renewable sources and the potential critical issues that may involve specific portions of grid in the short and medium term. The supplementary document to the 2011 Development Plan forecasts investments for approximately 0.4 billion.