# Article 26 — Information on energy efficiency (Article 27da(2), point (m), of Regulation (EU) No 600/2014) **Commission Delegated Regulation (EU) 2025/1143 · binding · OJ L, 2025/1143, 3.11.2025 · dated 12 Jun 2025 [in force]** *In force · Commission Delegated Regulation (EU) 2025/1143, OJ L, 2025/1143, 3.11.2025 · Checked against EUR-Lex on 26 Oct 2026 · [Official source](https://eur-lex.europa.eu/eli/reg_del/2025/1143/oj/eng)* 1. An applicant seeking authorisation to operate a CT pursuant to Article 27db of Regulation (EU) No 600/2014 shall provide in its application for authorisation information on the expected power utilisation effectiveness ratio as defined by ISO/IEC 30134-2:2016 and the best practices referred to in the most recent version of the European Code of Conduct on Data Centre Energy Efficiency. 1. For the purposes of the expected power utilisation effectiveness ratio referred to in paragraph 1, the applicant shall consider the activities set out in points 8.1 of Annexes I and II to Commission Delegated Regulation (EU) 2021/2139.