2.

Each TSO shall exchange with the other TSOs in its observability area the following data about its transmission system using real-time data exchanges between the TSOs' supervisory control and data acquisition (SCADA) systems and energy management systems: actual substation topology; active and reactive power in line bay, including transmission, distribution and lines connecting SGUs; active and reactive power in transformer bay, including transmission, distribution and SGUs connecting transformers; active and reactive power in power generating facility bay; regulating positions of transformers, including phase-shifting transformers; measured or estimated busbar voltage; reactive power in reactor and capacitor bay or from a static VAR compensator; and restrictions on active and reactive power supply capabilities with respect to the observability area.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-04 · Text as adopted (Official Journal); later amendments are not incorporated in this text.