System defence plan
Each TSO shall submit a proposal for the Terms and conditions to act as defence service provider on a contractual basis to the relevant regulatory authority for approval.
Design of the system defence plan
By 31 December 2023, each TSO shall design a system defence plan in consultation with relevant DSOs, SGUs, national regulatory authorities or other designated entities, neighbouring TSOs, and other TSOs in its synchronous area.
Implementation of the system defence plan
By 30 June 2024, each TSO shall implement those measures of its system defence plan that are to be implemented on the transmission system.
By 31 December 2023, each TSO shall notify the transmission connected DSOs of the measures, including the deadlines for implementation.
By 31 December 2023, each TSO shall notify the SGUs or the defence service providers directly connected to its transmission system of the measures that are to be implemented on their installations, including the deadlines for implementation.
Activation of the system defence plan by TSO in coordination with DSOs, SGUs, and with the defence service providers
Shall occur when the system is in an emergency state and there are no remedial actions available to restore the system to a normal state.
Shall occur when the operational security of the transmission system requires activation of a measure of the system defence plan in addition to the available remedial actions, based on the operational security analysis.