GME’s Participants are hereby informed that, following the merger between Banca Popolare di Sondrio S.p.A. and BPER Banca S.p.A., as of April 20th, 2026, BPER Banca S.p.A. will take over Banca Popolare di Sondrio S.p.A. as the institution selected for GME’s treasury services.

In order to ensure the correct process of payments and posting of cash deposit on GME’s markets and platforms, the new bank account details - which will be available on GME’s website from April 20th, 2026 - are as follows:

BPER Banca S.p.A.

Payment of fees due on MTEE, RTEE, P-GO, MCIC and PCE IBAN: IT55M0538703231000049347903SWIFT: BPMOIT22XXX

Payment of the amount due for the transactions concluded on ME, PCE, MLF and MGAS as well as payment for fees due on ME, MGAS, PGAS and MLF IBAN: IT32N0538703231000049347904SWIFT: BPMOIT22XXX

Cash deposit posted on ME, PCE e MGAS IBAN: IT09O0538703231000049347905SWIFT: BPMOIT22XXX

Cash deposit posted and the payment of the amount due to the net creditors on MTEE IBAN: IT83P0538703231000049347906SWIFT: BPMOIT22XXX

Cash deposit posted on P-GO and the payment of the amount due to the net creditors on M-GO IBAN: IT37R0538703231000049347908SWIFT: BPMOIT22XXX

Cash deposit posted and the payment of the amount due to the net creditors on MCIC IBAN: IT44I0538703231000049347910SWIFT: BPMOIT22XXX

As far as the submission of bank guarantees and/or related updates is concerned, the address of the bank in charge of GME's treasury services, which will be available on GME’s website from April 20th, 2026, is as follows:

SWIFT Code for sending the swift 799 message: BPMOIT22XXX

1. for the submission of documents in hard copy with handwritten signature

BPER Banca S.p.A.Viale Cesare Pavese 336, 00144 – RomaTo the Attn.: Ufficio Key Client Large Corporate

1. for the submission of documents issued and signed digitally

BPER PEC: keyclientGME.bper@pec.gruppobper.it

Furthermore, all Participants with bank accounts held at Banca Popolare di Sondrio S.p.A. are reminded to notify promptly GME of their new bank details by April 20^th, 2026, using the forms provided on GME’s website.

For any further information, please contact us at mesettlement@mercatoelettrico.org.

GME informs market participants that, as of today, the option that is available in the Electricity Market Information System (SIME) and that enables market participants, in the cases referred to in the Integrated Text of the Electricity Market Rules, to enter data about the margins of the units that they have available will be extended also to holders of units “delegated” by the relevant BRPs.

Hence, as of today, with the publication on GME’s website, the updated version of Technical Rule no. 08 MPE (Technical Rule no. 08 rev. 5 MPE, “Methods for calculating the margins for the purposes of the MGP and MI by GME in the event of non-receipt”), will also enter into force.

GME informs market participants that today, with regard to the results of the energy exchange platform for balancing from the Automatic Frequency Restoration Reserve (aFRR platform) and to a correction made by Terna, it has republished the data posted on its page Home > Results > Electricity > MSD > aFRR and related to the period from 25 November (day of reinstatement of the aFRR platform) to 31 December 2025.

Following the notice dated 19 January 2018, it is hereby announced that the "time window" relating to the collection of data on the monthly storage and transit capacity of mineral oils referred to the second quarter of 2026, is scheduled between 1^st and 22^nd April 2026 from Monday to Friday, from 09:30 am to 5:30 pm.Specifically, in the aforementioned period, the persons subject to the notification obligation referred to in Article 2, paragraph 2.1, of the Ministerial Decree of 5 July 2017, no. 17433, are required to send to GME – through the Mineral-oil storage and transit capacity data reporting platform (PDC-oil) – the data on the monthly storage and transit capacity of mineral oils referred to the period May–August 2026.

Please note that, as provided for by the Ministry of Economic Development with Circular Letter no. 0014614 dated 05 June 2018, the notification of data relating to LPG depots for automotive purposes is excluded from the monthly data collection of the monthly storage and transit capacity of mineral oils.

The parties subject to the notification obligation which are not yet registered on the PDC-oil must access the platform and carry out the registration procedure described in the PDC-oil participant’s guide.For further information, please contact the following e-mail address logistica@mercatoelettrico.org or contact the telephone numbers 06 8012 4337/4500.

Circular Letter no. 1612 of 19 January 2018

Annex A Monthly Collection of Available Storage CapacityAnnex B Monthly Collection of Available Transit Capacity

Having received a request of activation of a trading session of the MLT-Flex from the DSO Unareti S.p.A., GME informs Market Participants, under art. 23, para. 23.2 of the MLF Regulations, that:

1. the trading session will be held on 24/03/2026;
2. the preliminary information about the MLT-Flex session, necessary for carrying out the trades, will be made available in the MLF information system on 23/03/2026;
3. the sitting for submission of offers will be opened at 10:00 on 24/03/2026;
4. the sitting for submission of offers will be closed at 15:00 on 24/03/2026;
5. the preliminary results of the session will be communicated and published in the MLF information system within 14:00 on 25/03/2026;
6. the final results of the session, after the technical validation of offers by the DSO, will be communicated and published within 12:00 on 26/03/2026.

Further to its communication of 16 January 2026, GME informs market participants that the provisions of TIDE are being implemented today. These provisions will enter into force on 1 February 2026 (day of flow) and, as of that date, upon their publication on GME’s website, the following updated Technical Rules will likewise become applicable.

1. Technical Rule no. 11 rev 01 ME - Market time interval and imbalance settlement period
2. Technical Rule no. 05 rev 05 MPE - Products tradable in the MGP and MI, number of multiple bids/offers in the MGP, MI-A, and MSD, and maximum number of block bids/offers in the MGP and MI-A
3. Technical Rule no. 08 rev 04 MPE - Methods for calculating the margins for the purposes of the MGP and MI by GME in the event of non-receipt
4. Technical Rule no. 10 rev 06 MPE - Checks of technical adequacy of bids/offers with respect to margins
5. Technical Rule no. 21 rev 02 MPE - Procedures for submitting requests for registration of  nominations, and cases of implicit nomination
6. Technical Rule no. 22 rev 02 MPE - Verification of validity and adequacy of requests for registration of nominations, determination and communication of nominations
7. Technical Rule no. 23 rev 01 MPE - Units and aggregations of units for injection, withdrawal, and provision of ancillary and redispatching services

The maximum number of block bids/offers that may be entered in each market session of the MGP and MI-A is made available (as set forth in Technical Rule no. 05 rev 05 MPE) on GME’s website, at the following link

The above-mentioned updated versions of the Technical Rules fully replace the previous versions published on GME’s website.

Starting from 15 October 2025, GME will make available a new channel for accessing its market data (published in the “Results” section of its website www.mercatoelettrico.org): an API (Application Programming Interface) Service.

The new channel will initially operate alongside the current FTPS channel, which will remain active during for a further transitional period only for already registered users.

The final decommissioning of the FTPS channel will be announced well in advance to allow interested users, already registered with the FTPS, to migrate to the new system in a gradual and smooth way.

To request authorisation for data access via the API Service, the applicant must submit the documents listed at the following link, in accordance with the procedures and within the timeframes indicated in the API User Manual.

All interested users are invited to consult the API Service access procedure and related technical documents, available at this link.

For queries about the authorisation procedure, please contact SupportoAPI@mercatoelettrico.org.

To receive technical-IT support, please contact Sistemi@mercatoelettrico.org.

Following some reports received by telephone and email to Gestore dei Mercati Energetici S.p.A. ("GME"), it seems that these telephone calls are made by a supposed "GME Office" and/or so-called GME operators, regarding proposals to change the electricity and/or gas supplier due to increases in cost of energy, not properly specified, or problems in the current supply, which were followed, in some cases, by emails with similar content.

It should be remembered that GME is completely unrelated to the event mentioned above. We would like to clearly state that we do not provide, in any way, commercial services such as those described above. Furthermore, we do not use communication methods with our clients such as those outlined above.

When in doubt, we always suggest to make sure of the above by contacting your current electricity and/or gas supplier according to the contact methods made available by the same. In any case, we suggest to avoid any possible follow up about proposals such as those highlighted above, in order not to face any unpleasant inconveniences.