(a)

within five years from the adoption of a previous measure where the national regulatory authority has defined the relevant market and determined which undertakings have significant market power; that five-year period may, on an exceptional basis, be extended for up to one year, where the national regulatory authority has notified a reasoned proposal for an extension to the Commission no later than four months before the expiry of the five-year period, and the Commission has not objected within one month of the notified extension;

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Source: EUR-Lex (Cellar) · retrieved 2026-10-28 · Text as adopted (Official Journal); later amendments are not incorporated in this text.