Territorial characterisation criteria

In consultations with local communities, one of the most effective instruments for choosing the alternative with the least impact is agreement on the ERPA (Exclusion, Repulsion, Problematic nature, Attraction) location criteria.
The area in question is characterised according to criteria that express its greater or lesser suitability for the infrastructure planned. As part of the activity of the national SEA work group, Terna and the regions agreed on a system of criteria based on four categories:

  • Exclusion: areas in which no construction is allowed;
  • Repulsion: areas in which nothing is to be constructed except when there are no alternatives or when the only alternatives are less environmentally compatible, and in any case in compliance within the normative framework agreed on;
  • Problematic nature: areas in which construction is problematic for an objective reason documented by the bodies concerned and which therefore require further analysis. The latter establishes if the problem can be resolved through compliance with a normative framework agreed on with the bodies or if it is necessary to find alternatives. Unlike the other criteria, this one involves further study and does not have an automatic mechanism of a priori  assessment;
  • Attraction: areas that should be favoured, if possible, after ascertaining that they can bear the load.