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 23/10/2025;
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 22/10/2025;
3. the sitting for submission of offers will be opened at 10:00 on 23/10/2025;
4. the sitting for submission of offers will be closed at 15:00 on 23/10/2025;
5. the preliminary results of the session will be communicated and published in the MLF information system within 14:00 on 24/10/2025;
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 27/10/2025.

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.

Further to its communication of 15 July 2025, GME informs market participants that, as of today, with the publication on its website, the new versions of the following Technical Rules of the MGAS will enter into force: Technical Rule no. 01 (Notifications about the procedure of admission to/exclusion from the market), Technical Rule no. 07 (Types of contracts, duration of the trading period and cascading mechanism), Technical Rule no. 15 (Verification of order adequacy and guarantee coverage), and Technical Rule no. 18 (Market making activity).

The document containing the calculation method of the Italian Gas Index IGI was also updated and published today.

Further to the press release issued by the Market Coupling Steering Committee (MCSC) on 12 September 2025, GME announces that, as of today, with delivery date on 1 October 2025, products with a 15-minute Market Time Unit (MTU) will be available for trading in the Day-Ahead Market (MGP) and within the Single Day-Ahead Coupling (SDAC).

Starting today, concurrently with the go-live of 15-minute MTU products, GME will also make available in the MGP products with a 30-minute market time interval, in addition to the already available products with a 60-minute market time interval.

With a view to enabling the trading of the above-mentioned products, the new versions of the following Technical Rules, referred to in the Integrated Text of the Electricity Market Rules and adequately updated, will enter into force as of today, with their publication on GME’s website:

Technical Rule no. 03 rev. 13 MPE – Timing for the sessions of the MGP, MI, MSD and for the Nomination PlatformTechnical Rule no. 05 rev. 04 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-ATechnical Rule no. 10 rev. 05 MPE – Checks of technical adequacy of bids/offers with respect to marginsTechnical Rule no. 14 rev. 02 MPE – Defining the results of the MGP and MI

Following the previous communication of 15 July 2025, GME informs market participants that it will organise some blank test sessions in view of the entry into force of the new Technical Rule no. 07 MGAS – Types of contracts, duration of the trading period and cascading mechanism. The test sessions will enable market participants to test the trading of the new contracts referred to in the amended Technical Rule.

In particular, during the first phase of the tests, the trading of the new Working Days Next Week (WK/DY NW) product will be simulated.

The blank test sessions will be held on working days only, from 23 September to 3 October, on the test platform available at https://provegas.ipex.it/MGasWebSite/ in the following hours:

1. opening of the sitting for submission of bids/offers at 09:30;
2. closing of the sitting for submission of bids/offers at 16:30.

The tests will take place according to the following timetable:

1. from 23 to 26 September: trading of the WK/DY NW product (called in the MGAS: WD-2025-40), consisting of 5 gas-days (Monday 29, Tuesday 30, Wednesday 1, Thursday 2, and Friday 3 October);
2. from 29 to 3 October: trading of the WK/DY NW product (called in the MGAS: WD-2025-41), consisting of 5 gas-days (Monday 6, Tuesday 7, Wednesday 8, Thursday 9, and Friday 10 October).

Participation in the blank tests will be open to parties registered with the live MGAS platform as of 8 September 2025.

Other parties wishing to take part in the blank tests may request the registration of their digital certificate at provegas.ipex.it/gaswebsite/register.aspx.

The second phase of the tests will take place in the week from 1 to 7 December, on working days only. During this phase, the additional products referred to in Technical Rule no. 07 will be traded. These products include: weekend products, consisting of more than two days, and the consequent daily products, as well as the WK/DY NW products, listed upon the occurrence of such event. The scenario for additional tests will occur for the first time in the MGAS in the 2025 Christmas period, during which a weekend product consisting of 4 days (i.e. WE-2025-52) will be listed. Detailed information will be provided to market participants in November. It is worth pointing out that the other weekend products listed in the MGAS, prior to the weekend of the 2025 Christmas period, will regularly include only the gas-days corresponding to Saturday and Sunday.

For any queries about the tests and the operation of the MGAS platform, please contact GME at  proveGas@mercatoelettrico.org. The data entered during the tests will not be used in any way for operational purposes on the platform  

In its press release of 4 August 2025 , Terna (the Italian TSO) announced the time window for blank tests to be held in view of the reconnection to the platform for the exchange of reserve balancing energy to re-establish the automatically activated frequency pursuant to art. 21 of Regulation (EU) 2017/2195 (aFRR Platform); the aFRR platform was developed as part of the PICASSO (Platform for the International Coordination of Automated Frequency Restoration and Stable System Operation) project. Further to the above-mentioned press release, GME informs that it will organise special blank test sessions together with market participants, to enable them to test the new features of the IPEX platform.

GME’s blank test sessions will be held in the period from 20 to 24 October 2025, and from 27 to 31 October 2025.

Additional details about the timing and procedures for the blank tests will be made available on the homepage of GME’s test platform, available at: https://proveipex.ipex.it.

The updated version of the Implementation Guide will be available on the homepage of the test platform at https:// proveipex.ipex.it

All market participants wishing to take part in the tests may access the test platform with the same credentials as those used for the live platforms.

For further queries about the tests and the operation of the platforms, please contact GME at proveME@mercatoelettrico.org.

The data entered by market participants during the blank tests will not be used in any way for operational purposes.

Please note that that, as of 30 September 2025, the FTP channel, currently used to access the data available in the “Results” section of Gestore dei Mercati Energetici S.p.A.’s website, will be decommissioned.

From that date onwards, the above-mentioned data will be exclusively available via the FTPS (File Transfer Protocol Secure) channel, already active at FTPS://download.ipex.it.

All users of the FTP channel are kindly invited to update their configurations and migrate to the FTPS protocol (using the same credentials currently associated with the FTP) as soon as possible to ensure uninterrupted access to the service.

Additional details will be provided via an appropriate communication sent by e-mail to already registered users.

For further clarifications or assistance, please contact GME’s ICT support service at 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.