Information exchange
Article 40
1. In addition to the provisions of Articles 40 to 53 of Regulation (EU) 2017/1485, each TSO, when in the emergency, blackout or restoration states, shall be entitled to gather the following information: (a) from DSOs identified in accordance with Article 23(4), the necessary information about at least: (i) the part of their network that is in island operation; (ii) the ability to synchronise parts of their network that is in island operation; and (iii) the capability to start island operation. (b) from SGUs identified in accordance with Article 23(4) and restoration service providers, information about at least the following conditions: (i) the current status of the installation; (ii) the operational limits; (iii) the full activation time and the time to increase generation; and (iv) the time critical processes. 2. During the emergency, blackout or restoration states, each TSO shall provide in due time and for the purposes of system defence plan procedures and restoration plan procedures, the following information, where available to the TSO: (a) to neighbouring TSOs, information about at least: (i) the extent and borders of the synchronised region or synchronised regions to which its control area belongs; (ii) the restrictions to operate the synchronised region; (iii) the maximum duration and amount of active and reactive power that can be supplied via interconnectors; and (iv) any other technical or organisational restrictions; (b) to the frequency leader of its synchronised region, information about at least: (i) the restrictions to maintain island operation; (ii) the available additional load and generation; and (iii) the availability of operational reserves; (c) to transmission connected DSOs identified in accordance with Article 11(4) and 23(4), information about at least: (i) the system state of its transmission system; (ii) the limits of active and reactive power, block loading, tap and circuit breaker position at the connection points; (iii) the information on the current and planned status of power generating modules connected to the DSO, if not available to the DSO directly; and (iv) all necessary information leading to further coordination with distribution connected parties; (d) to defence service providers, information about at least: (i) the system state of its transmission system; and (ii) the scheduled measures that require participation of the defence service providers; (e) to DSOs and SGUs identified pursuant to Article 23(4) and to restoration service providers, information about at least: (i) the system state of its transmission system; (ii) the ability and plans to re-energise couplings; and (iii) the scheduled measures that require their participation. 3. TSOs in emergency, blackout or restoration state shall exchange among themselves information concerning, at least: (a) the circumstances that led to the current system state of its transmission system, to the extent that they are known; and (b) the potential problems making assistance for active power necessary. 4. A TSO in emergency, blackout or restoration state shall provide, in due time, information about the system state of its transmission system and, where available, additional information explaining the situation on the transmission system: (a) to the NEMO(s), who shall make this information available to their market participants, as provided for in Article 38; (b) to its relevant regulatory authority in accordance with Article 37 of Directive 2009/72/EC, or when explicitly provided for in national law, to the entities referred to in Article 4(3); and (c) to any other relevant party, as appropriate. 5. TSOs shall inform each affected party about the test plan developed pursuant to Article 43(2) and (3).