Following the notice date 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 third quarter of 2026, is scheduled between 3^rd and 21^st August 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 September-December 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

Following the request for the activation of a MLT-Flex trading session submitted by the DSO Unareti S.p.A., GME informs Market Participants, pursuant to Article 23, paragraph 23.2 of the Local Flexibility Market Regulations, that:

1. the trading session will be held on 25/06/2026;
2. the preliminary information relating to the MLT-Flex session, required for the execution of trading activities, will be made available within the MLF information system on 24/06/2026;
3. the session for the submission of offers will open at 10:00 on 25/06/2026;
4. the session for the submission of offers will close at 15:00 on 25/06/2026;
5. the communication and publication of the preliminary results of the session within the MLF information system will take place by 14:00 on 26/06/2026;
6. the communication and publication of the final results of the session, following the technical validation of the offers by the DSO, will take place by 12:00 on 29/06/2026.

Further to the previous notices issued by GME on 30 April 2026 and by Terna on 29 May 2026, GME informs market participants that a new mechanism for procuring Frequency Containment Reserves (FCRs) will go live on 3 June 2026, for the flow date of 4 June.

In this regard, it should be noted that, following the FCR auctions held by Terna, GME will introduce into its systems a new flow, related to margins and feasibility intervals, at 16:30 on day D-1 with respect to the flow date D.

For further information, please write to: salamercato@mercatoelettrico.org

Further to its communication of 7 May 2026 – implementing the provisions of ACER’s “Harmonised Maximum and Minimum Clearing Price Methodology for the Single Day-Ahead Coupling”, GME informs market participants that, as of today, the updated version of Technical Rule no. 20 rev. 04 MPE will enter into force, following its publication on GME’s website.

The updated version of Technical Rule no. 20 MPE (Technical Rule no. 20 rev. 04 MPE) fully replaces the previous version published on GME’s website.

GME informs market participants that, as of today, with the publication on GME’s website, the updated versions of the following Technical Rules will enter into force: Technical Rules no. 03 rev 02 MLF, no. 09 rev 02 MLF, and no. 01 rev 01 MLT. These Technical Rules have been amended in order to enable the DSO Unareti S.p.A. to offer voltage/reactive power control services on Forward Flexibility Markets (MLT-Flex).

In this regard, it is worth noting that, with its Resolution 140/2026/R/EEL of 28 April 2026, ARERA approved the new draft Regulation of the MindFlex project of the DSO Unareti S.p.A. for the June–December 2026 period. This draft Regulation enables the DSO to procure voltage/reactive power control services on the MLT-Flex.

Following to the news of 11 May 2026, to allow interested parties to test the new features concerning the supply of reactive power services (included among the products to be auctioned on 26 May session), GME will organise blank test sessions according to the following procedure and timetable.

Blank test timetable.

Blank tests will take place on GME’s test platform (available at https://prove-mindflex.ipex.it/FlexWa/Login.aspx), on 21 May according to the following timetable:

1. Sitting for submission of bids/offers: from 10:00 to 15:00;
2. Determination of results and their notification to market participants: within 17:00.

The tests will be open to all BSPs authorised by UNARETI S.P.A. and GME. Before the tests, the BSPs may obtain the credentials for access to the test platform by writing to proveme@mercatoelettrico.org. If there are BSPS that have not yet been authorised but have expressed interest in taking part in the tests, their requests will be assessed jointly by GME and UNARETI S.p.A.

Further details about the tests will be available on the test platform.

The transactions carried out during the tests will not be binding and will not give rise to any obligation. For any queries, please write to: proveme@mercatoelettrico.org.

Following the news published on 20 March 2026, Participants are hereby informed that, following the merger between Banca Popolare di Sondrio S.p.A. and BPER Banca S.p.A., as of today April 20^th, 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.

Hence, in order to ensure the correct process of payments and posting of cash deposits on GME’s markets and platforms, the new bank account details, available on GME’s website, are as follows:

BPER Banca S.p.A.

Payment of fees due on MTEE, RTEE, P-GO, MCIC and the PCEIBAN: 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 MLFIBAN: IT32N0538703231000049347904SWIFT: BPMOIT22XXX

Cash deposit posted on ME, PCE e MGASIBAN: IT09O0538703231000049347905SWIFT: BPMOIT22XXX

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

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

Cash deposit posted and the payment of the amount due to the net creditors on MCICIBAN: 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, available on GME’s website, is as follows:

SWIFT Code for sending the swift 799 message: BPMOIT22XXX

1. for the submission of documents in original 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

Please also be informed that, together with the abovementioned changes, the new versions of the TEE, GO, and CIC Technical Rules, adapted accordingly, enter into force today with their publication on GME’s website, as indicated below.

1. DTF 01 MTEE
2. DTF 03 P-GO
3. DTF 03 MCIC

The updated versions of the Technical Rule n. 01 MTEE, 03 P-GO e 03 MCIC (i.e. DTF n. 01 Rev. 06 MTEE, DTF n. 03 Rev. 05 P-GO e DTF n. 03 Rev. 04 MCIC) replace the previous versions published on GME’s website.

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

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.