art_20__text_1
Transmission system operators, storage system operators and LNG system operators shall keep at the disposal of the national authorities, including the national regulatory authority, the national competition authority and the Commission, all information referred to in Articles 18 and 19, and in Part 3 of Annex I for a period of five years.
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Source: EUR-Lex (Cellar) · retrieved 2026-10-29 · Text as adopted (Official Journal); later amendments are not incorporated in this text.