The Agency decided that the intraday cross-zonal market shall open at 15:00 market time day-ahead and shall close 60 minutes (30 minutes for Estonia-Finland border) before the start of the relevant market time unit. The Agency expects that, in the forthcoming regional intraday capacity calculation methodologies, TSOs will evaluate and justify how much cross-zonal capacity they will be able to offer to the intraday market and when, taking into account the impact on operational security. You can find the decision and the adopted terms and conditions on the intraday cross-zonal gate opening and closure time here.
Corrigendum to ACER Decision 04-2018.
Annex I_rectified_ACER Decision 04-2018.
Annex Ia_rectified_ACER Decision 04-2018.
Annex II_180424.
Read more on the development of methodologies related to market coupling.
Background
In October 2017, the Agency became competent to decide on the proposal from all TSOs on the intraday cross-zonal gate opening and closure time. In January 2018, the Agency consulted all interested stakeholders on this issue (see the details here).
All TSOs proposed different intraday cross-zonal gate opening times for different capacity calculation regions due to, according to TSOs, different possibilities to offer leftover cross-zonal capacity from the day-ahead timeframe. The Agency decided that, instead, the intraday cross-zonal gate should open at 15:00 market time day-ahead and that the difficulties with regard to the offering of leftover cross-zonal capacity from the day-ahead timeframe should be addressed and justified in the forthcoming regional intraday capacity calculation methodologies. The regulatory authorities will then need to decide on this proposal.
With regard to the intraday cross-zonal gate closure time, the Agency approved the TSOs proposal. However, the Agency deemed it necessary to clarify the definition of market time unit on the bidding zone border in order the ensure legal enforceability of this definition.