Media

With reference to the implementation of the provisions of TIDE, GME, jointly with Terna, informs market participants that:

1. the go-live is confirmed on 1 January 2025 (flow date);
2. to enable the alignment of market platforms and procedures with the new regulatory framework, while ensuring maximum operational security, the   timeline of market sessions and activities on 30 December 2024 and 31 December 2024 will be changed, as indicated in GME-TERNA SWITCHING PLAN presented below;
3. additional operational measures will be adopted for the switching to the new regulatory framework introduced by TIDE.

GME-TERNA SWITCHING PLAN

On the calendar day 30 December 2024, the PCE will be out of service from 15:00 to 17:00 to enable system updates in line with the new regulatory framework of TIDE.

On the calendar day 31 December 2024:

1) the following market sessions and activities, pertaining to the same flow date 31 December 2024, will be cancelled:

2) the IPEX platform (MGP, MI-A, MSD, and MB) will be out of service from 03:00 to 7:00 to enable system updates in line with the new regulatory framework of TIDE; starting from 07:00, the platform will become operational again for all the activities related to the flow date 1 January 2025 or later;

3) the MI-XBID and PN platforms will be out of service from 02:00 to 13:00 to enable system updates in line with the new regulatory framework of TIDE; starting from 13:00, the platform will become operational again for all the activities related to the flow date 1 January 2025.

All market sessions and activities not falling within the unavailability periods mentioned in the previous points 2) and 3) will be held as usual in accordance with the timings and the ordinary procedures indicated in the Integrated Text of the Electricity Market Rules, the PCE Rules, and the related Technical Rules.

ADDITIONAL OPERATIONAL MEASURES

Bids/offers and other information entered by market participants on the market platforms before 31 December 2024 and pertaining to the flow date 1 January 2025 or later will remain valid.

However, GME, jointly with Terna, informs market participants that, in order to properly manage the transition to the new regulatory framework introduced by TIDE, the following operational measures will be adopted.

Adoption of the MW as the unit of measurement of quantities, specified with a single decimal

On the MGP, MI-A, MI-XBID, PCE, MSD and MB, beginning on the flow date 1 January 2025, the unit of measurement of quantities covered by bids/offers and margins will be expressed in MW, specified with one decimal place.

Bids/offers related to the MGP, margins related to the MGP, MI-A, and MI-XBID, as well as CET bids/offers and commercial transactions on the PCE already present on the platforms and referring to the flow date 1 January 2025 or later, if bearing a number of decimal places greater than 1, will be handled as follows:

1. bids/offers related to the MGP: the quantities of bids/offers (including predefined ones) submitted before 03:00 on 31 December 2024 (start of unavailability for system upgrades) will be rounded to 1 decimal place according to the mathematical criterion;
2. margins related to the MGP, MI-A, and MI-XBID: the quantities specified in step-up and step-down margins submitted before 03:00 on 31 December (start of unavailability for system upgrades) will be rounded to 1 decimal place according to the mathematical criterion;
3. PCE - CET bids/offers: the quantities of CET bids/offers submitted on the PCE will be rounded to 1 decimal place according to the mathematical criterion;
4. PCE - commercial transactions already confirmed: the quantities of commercial transactions confirmed before 15:00 on 30 December (start of unavailability for system upgrades) will not be rounded to 1 decimal place. In these cases, an imbalance will occur with respect to the schedule, because in the corresponding sessions of the MGP it will not be possible to accept CET bids/offers specifying a quantity in MW with a number of decimal places higher than 1;
5. PCE - commercial transactions not yet confirmed: the quantities of commercial transactions that have been submitted but not confirmed before 15:00 on 30 December (start of unavailability for system upgrades) cannot be confirmed after this deadline (NB: only in case quantities have a number of decimal places higher than 1). In this case, such transactions will have to be revoked by operators.

Switch to the 15-min ISP

1. Predefined bids/offers on the MSD1: predefined bids/offers MSD1 that are present on the market platforms and that have been submitted with an hourly granularity will be automatically converted into corresponding bids/offers having a 15-min granularity, with the purpose of executing the sessions related to the flow date 1 January or later. Consequently, each predefined bid/offer related to a single hour “h” will be automatically replaced with 4 bids/offers (each of them referring to one quarter-hour included in the reference hour “h”) with the same price and the same quantity of capacity as the predefined bid/offer (e.g. a 10 MWh bid/offer related to one hour “h” will be replaced with 4 bids/offers of 10 MW for each quarter-hour, equivalent to a quantity of energy of 2.5 MWh in each quarter-hour). However, starting from 07:00 on 31 December (end of unavailability for system upgrades), each participant (BSP) will be able to change, revoke, and/or submit new pre-defined bids/offers on the MSD1 with a 15-min granularity related to the flow date 1 January 2025 or later;
2. TERRE Platform: starting from the flow date 1 January 2025, the operational participation in the TERRE platform will be suspended, in compliance with ARERA Resolution 449/2024/R/EEL.

GME and Terna reserve the right to communicate any change to the above-mentioned switching plan via their usual communication channels.

Finally, GME reminds ME and PCE participants that the set of the main documents aligned with the new TIDE provisions has been published for informational purposes only, in the TIDE section of its website, in order to facilitate market participants with the implementation of the new provisions.

For additional information, please write to:
salamercato@mercatoelettrico.org
proveisp15@terna.it