ENTSOG Tariff NC - Implementation Document 2nd Edition

Article 10(1) sets out a default rule ‘same jointly’: all the TSOs jointly apply the same methodology. ‘Same jointly’ is consistent with the ‘same’ default rule in Article 6(3). Article 10(2) foresees two exceptions from ‘same jointly’ subject to NRA decision and for an initial time period of five years, which the NRA may prolong: \\ Article 10(2)(a) sets out the first exception ‘same separately’, where all TSOs apply the same RPM separately. ‘Same separately’ is consistent with the ‘same’ default rule in Article 6(3) but constitutes an exception from the ‘jointly’ default rule in Article 10(1). \\ Article 10(2)(b) sets out the second exception ‘different separately’, where all TSOs apply different RPMs separately while planning to merge entry-exit systems. ‘Different separately’ is an exception from the ‘same’ default rule in Article 6(3) and from the ‘jointly’ default rule in Article 10(1). Article 11 does not foresee any defaults, exceptions or specific conditions. There are three options if multi-TSO arrangements cover more than one MS: ‘same jointly’, ‘same separately’ and ‘different separately’.

Conditions and process aspects for reference price methodology application in a multi-TSO entry-exit system within a Member State

Table 6 summarises the conditions for applying same/different RPMs jointly/sepa- rately in an entry-exit system within a MS.

SCENARIOS FOR MULTI-TSO ARRANGEMENTS WITHIN A MS

Scenario for multi-TSO arrangements within a MS Conditions for scenario application

‘Same jointly’

Establishment of an effective inter-TSO compensation (‘ITC’) mechanism

\\ Establishment of an effective ITC mechanism with the aim to: (1) prevent detrimental effects on TSOs’ transmission services reve- nue; and (2) avoid cross-subsidies between domestic and cross-border network users \\ Costs correspond to those of an efficient TSO \\ Initial time period of five years which the NRA may prolong \\ Same as for ‘same separately’ scenario \\ Planning of entry-exit systems merger within a MS supported by an impact assessment and cost-benefit analysis (‘CBA’) \\ Initial time period of five years which the NRA may prolong

‘Same separately’

‘Different separately’

Table 6: Scenarios for multi-TSO arrangements within a MS

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TAR NC Implementation Document – Second Edition September 2017