1.

Each TSO shall ensure the availability, reliability and redundancy of the following items: facilities for monitoring the system state of the transmission system, including state estimation applications and facilities for load-frequency control; means to control the switching of circuit breakers, coupler circuit breakers, transformer tap changers and other equipment which serve to control transmission system elements; means to communicate with the control rooms of other TSOs and RSCs; tools for operational security analysis; and tools and communication means necessary for TSOs to facilitate cross-border market operations.

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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.