This document summarizes the analyses conducted on the possible ways of implementing the regulation of data exchange among Terna Spa (Terna), electricity distribution companies and Significant Grid Users, for the purposes of the safe operation of the national electricity system pursuant to the provisions of the European Union Regulation 2017/1485 of 2 August 2017, Guideline on electricity transmission System Operation (SO GL).

Possible technological solutions for data exchange associated with monitoring of plants connected to distribution networks are identified; their potential evolution to support DSO1 functionality (monitoring and control) and for user participation in flexibility services is also highlighted. For the various alternatives that prove to be viable, the cost items to be incurred for the adaptation of production plants connected to distribution networks are identified.

The document is structured as follows: first of all, a summary of the requirements set by SO GL is presented (chap. 2), where the various types of data envisaged are reported (structural data, data in programming and in real time). The current functions implemented by network operators and the associated information exchange requirements are reported in chap. 3; this section also summarizes what has been developed so far in the CEI CT 316 and CT 57 context for the Central Plant Controller (CPC).

The core of the document is the technological analysis of the main standards applicable to information exchanges (chap. 4). In support of this analysis, chap. 5 reports the developments underway in Europe, which also concern new network services; in particular, the architectural choice of SO GL implementation in Denmark is described.

Different hypotheses of architectural solutions are then outlined (chap. 6), distinguished between those based on a direct chain and those that use centralized information exchange platforms, with contextual access to data by authorized parties; in particular, the possible architectures compatible with the technical management of the distributor and with the development of flexibility services are highlighted. Finally, the main cost items for the implementation of the architectures are identified (chap. 7), focusing attention on the costs of adapting the systems connected to the distribution network.