Article 4

This Regulation aims at: determining common operational security requirements and principles; determining common interconnected system operational planning principles; determining common load-frequency control processes and control structures; ensuring the conditions for maintaining operational security throughout the Union; ensuring the conditions for maintaining a frequency quality level of all synchronous areas throughout the Union; promoting the coordination of system operation and operational planning; ensuring and enhancing the transparency and reliability of information on transmission system operation; contributing to the efficient operation and development of the electricity transmission system and electricity sector in the Union. When applying this Regulation, Member States, competent authorities, and system operators shall: apply the principles of proportionality and non-discrimination; ensure transparency; apply the principle of optimisation between the highest overall efficiency and lowest total costs for all parties involved; ensure TSOs make use of market-based mechanisms as far as possible, to ensure network security and stability; respect the responsibility assigned to the relevant TSO in order to ensure system security, including as required by national legislation; consult with relevant DSOs and take account of potential impacts on their system; and take into consideration agreed European standards and technical specifications.

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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.