http://www.legislation.gov.uk/eur/2017/460/article/10Commission Regulation (EU) 2017/460 of 16 March 2017 establishing a network code on harmonised transmission tariff structures for gas (Text with EEA relevance)Commission Regulation (EU) 2017/460Commission Regulation (EU) 2017/460 of 16 March 2017 establishing a network code on harmonised transmission tariff structures for gas (Text with EEA relevance)King's Printer of Acts of Parliamenthttps://webarchive.nationalarchives.gov.uk/eu-exit/https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32017R0460texttext/xmlen2025-01-08Expert Participation2020-12-31 CHAPTER II <Strong>REFERENCE PRICE METHODOLOGIES</Strong> Rules for entry-exit systems within <Substitution ChangeId="key-e937132f79e874468f3260c6795ce882-1733309593108" CommentaryRef="key-e937132f79e874468f3260c6795ce882">the United Kingdom</Substitution> where more than one transmission system operator is activeArticle 101In accordance with Article 6(3), the same reference price methodology shall be applied jointly by all transmission system operators within an entry-exit system within the United Kingdom.2As an exception to paragraph 1 and subject to paragraph 3, the national regulatory authority may decide:athat the same reference price methodology is applied separately by each transmission system operator within an entry-exit system;bas an exception to Article 6(3), when planning entry-exit system mergers, on intermediate steps allowing for different reference price methodologies to be applied separately by each transmission system operator within the entry-exit systems concerned. Such a decision shall set out the time period for the application of the intermediate steps. The national regulatory authority or the transmission system operators, as decided by the national regulatory authority, shall carry out an impact assessment and a cost benefit analysis prior to implementing such intermediate steps.As a result of applying different reference price methodologies separately, the transmission services revenue of the transmission system operators involved shall be adjusted accordingly.3In order to allow for the proper application of the same reference price methodology jointly, an effective inter-transmission system operator compensation mechanism shall be established.The decision referred to in paragraph 2(a) or, respectively, paragraph 2(b) may be taken where the following conditions are complied with:aan effective inter-transmission system operator compensation mechanism is established with the aim to:prevent detrimental effects on the transmission services revenue of the transmission system operators involved;avoid cross-subsidisation between intra-system and cross-system network use;bsuch separate application ensures that the costs correspond to those of an efficient transmission system operator.4The maximum time period set out in the decision referred to in paragraph 2(a) or, respectively, paragraph 2(b) shall be no later than five years as from the date referred to in Article 38(2). Sufficiently in advance of the date set out in that decision, the national regulatory authority may decide to postpone this date.5At the same time as the final consultation in accordance with Article 26, the national regulatory authority shall conduct a consultation on the principles of an effective inter-transmission system operator compensation mechanism referred to in paragraph 3 and its consequences on the tariff levels. The inter-transmission system operator compensation mechanism shall be applied by the national regulatory authority and published together with the consultation responses received.6The reserve price referred to in Article 22(1) shall be calculated as set out therein. Where paragraph 2 is applied, the following two calculations shall be carried out:athe calculation set out in Article 22(1) shall be carried out by each transmission system operator involved;bthe weighted average of the resulting values referred to in point (a) shall be calculated in accordance with the formula set out in Article 22(1)(b), mutatis mutandis.7The final consultation referred to in Article 26 shall be conducted by all transmission system operators jointly or by the national regulatory authority. Where paragraph 2 is applied, such consultation shall be conducted by each transmission system operator separately or by the national regulatory authority, as decided by the national regulatory authority.8The information referred to in Articles 29 and 30 shall be published on an aggregated level for all transmission system operators involved. Where paragraph 2 is applied, the following two actions shall be carried out:asuch information shall be published individually for each transmission system operator involved;bthe information on the entry-exit split referred to in Article 30(1)(b)(v)(2) for the entry-exit system shall be published by the national regulatory authority.Words in Art. 10 heading substituted (31.12.2020) by S.I. 2019/531, Sch. 5 para. 5B(2) (as inserted by The Gas Tariffs Code (Amendment) (EU Exit) Regulations 2019 (S.I. 2019/1393), reg. 1(2), Sch. para. 3); 2020 c. 1, Sch. 5 para. 1(1)Words in Art. 10(1) substituted (31.12.2020) by S.I. 2019/531, Sch. 5 para. 5B(3) (as inserted by The Gas Tariffs Code (Amendment) (EU Exit) Regulations 2019 (S.I. 2019/1393), reg. 1(2), Sch. para. 3); 2020 c. 1, Sch. 5 para. 1(1)Words in Art. 10(5) substituted (31.12.2020) by S.I. 2019/531, Sch. 5 para. 5B(4) (as inserted by The Gas Tariffs Code (Amendment) (EU Exit) Regulations 2019 (S.I. 2019/1393), reg. 1(2), Sch. para. 3); 2020 c. 1, Sch. 5 para. 1(1)