Leading service provider for Transmission System Operators (TSOs) in the European electricity market.

1. TSO(s)*:

SWISSGRID

2. Identification of affected Long Term Transmission Rights:

CH-IT

3. Triggering event:

Curtailment due to Curtailment to ensure operation remains within Operational Security Limits

4. Affected volume in MW / hour for each concerned period:

01-09-2025 08:00 - 09:00 2223 MW

01-09-2025 18:00 - 19:00 2223 MW

01-09-2025 19:00 - 20:00 2223 MW

5. Amount of LTTR remaining after curtailment:

01-09-2025 08:00 - 09:00 2026 MW

01-09-2025 18:00 - 19:00 2110 MW

01-09-2025 19:00 - 20:00 2110 MW

1. TSO(s)*:

TERNA, ADMIE

2. Identification of affected Long Term Transmission Rights:

IT-GR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

4. Affected volume in MW / hour for each concerned period:

01-09-2025 00:00 - 01:00 500 MW

01-09-2025 01:00 - 02:00 500 MW

01-09-2025 02:00 - 03:00 500 MW

01-09-2025 03:00 - 04:00 500 MW

01-09-2025 04:00 - 05:00 500 MW

01-09-2025 05:00 - 06:00 500 MW

01-09-2025 06:00 - 07:00 500 MW

01-09-2025 07:00 - 08:00 500 MW

01-09-2025 08:00 - 09:00 500 MW

01-09-2025 09:00 - 10:00 500 MW

01-09-2025 10:00 - 11:00 500 MW

01-09-2025 11:00 - 12:00 500 MW

01-09-2025 12:00 - 13:00 500 MW

01-09-2025 13:00 - 14:00 500 MW

01-09-2025 14:00 - 15:00 500 MW

01-09-2025 15:00 - 16:00 500 MW

01-09-2025 16:00 - 17:00 500 MW

01-09-2025 17:00 - 18:00 500 MW

01-09-2025 18:00 - 19:00 500 MW

01-09-2025 19:00 - 20:00 500 MW

01-09-2025 20:00 - 21:00 500 MW

01-09-2025 21:00 - 22:00 500 MW

01-09-2025 22:00 - 23:00 500 MW

01-09-2025 23:00 - 24:00 500 MW

5. Amount of LTTR remaining after curtailment:

01-09-2025 00:00 - 01:00 0 MW

01-09-2025 01:00 - 02:00 0 MW

01-09-2025 02:00 - 03:00 0 MW

01-09-2025 03:00 - 04:00 0 MW

01-09-2025 04:00 - 05:00 0 MW

01-09-2025 05:00 - 06:00 0 MW

01-09-2025 06:00 - 07:00 0 MW

01-09-2025 07:00 - 08:00 0 MW

01-09-2025 08:00 - 09:00 0 MW

01-09-2025 09:00 - 10:00 0 MW

01-09-2025 10:00 - 11:00 0 MW

01-09-2025 11:00 - 12:00 0 MW

01-09-2025 12:00 - 13:00 0 MW

01-09-2025 13:00 - 14:00 0 MW

01-09-2025 14:00 - 15:00 0 MW

01-09-2025 15:00 - 16:00 0 MW

01-09-2025 16:00 - 17:00 0 MW

01-09-2025 17:00 - 18:00 0 MW

01-09-2025 18:00 - 19:00 0 MW

01-09-2025 19:00 - 20:00 0 MW

01-09-2025 20:00 - 21:00 0 MW

01-09-2025 21:00 - 22:00 0 MW

01-09-2025 22:00 - 23:00 0 MW

01-09-2025 23:00 - 24:00 0 MW

6. Information on exact operational security limit(s) that are expected to be violated in the absence of curtailment*:

Expected violation of operational security limits of physical transmission assets

7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s)*?

During the CC process, all the remedial actions provided by the TSOs are already considered by the CCC in the calculation

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

1. TSO(s)*:

TERNA, ADMIE

2. Identification of affected Long Term Transmission Rights:

GR-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

4. Affected volume in MW / hour for each concerned period:

01-09-2025 00:00 - 01:00 500 MW

01-09-2025 01:00 - 02:00 500 MW

01-09-2025 02:00 - 03:00 500 MW

01-09-2025 03:00 - 04:00 500 MW

01-09-2025 04:00 - 05:00 500 MW

01-09-2025 05:00 - 06:00 500 MW

01-09-2025 06:00 - 07:00 500 MW

01-09-2025 07:00 - 08:00 500 MW

01-09-2025 08:00 - 09:00 500 MW

01-09-2025 09:00 - 10:00 500 MW

01-09-2025 10:00 - 11:00 500 MW

01-09-2025 11:00 - 12:00 500 MW

01-09-2025 12:00 - 13:00 500 MW

01-09-2025 13:00 - 14:00 500 MW

01-09-2025 14:00 - 15:00 500 MW

01-09-2025 15:00 - 16:00 500 MW

01-09-2025 16:00 - 17:00 500 MW

01-09-2025 17:00 - 18:00 500 MW

01-09-2025 18:00 - 19:00 500 MW

01-09-2025 19:00 - 20:00 500 MW

01-09-2025 20:00 - 21:00 500 MW

01-09-2025 21:00 - 22:00 500 MW

01-09-2025 22:00 - 23:00 500 MW

01-09-2025 23:00 - 24:00 500 MW

5. Amount of LTTR remaining after curtailment:

01-09-2025 00:00 - 01:00 0 MW

01-09-2025 01:00 - 02:00 0 MW

01-09-2025 02:00 - 03:00 0 MW

01-09-2025 03:00 - 04:00 0 MW

01-09-2025 04:00 - 05:00 0 MW

01-09-2025 05:00 - 06:00 0 MW

01-09-2025 06:00 - 07:00 0 MW

01-09-2025 07:00 - 08:00 0 MW

01-09-2025 08:00 - 09:00 0 MW

01-09-2025 09:00 - 10:00 0 MW

01-09-2025 10:00 - 11:00 0 MW

01-09-2025 11:00 - 12:00 0 MW

01-09-2025 12:00 - 13:00 0 MW

01-09-2025 13:00 - 14:00 0 MW

01-09-2025 14:00 - 15:00 0 MW

01-09-2025 15:00 - 16:00 0 MW

01-09-2025 16:00 - 17:00 0 MW

01-09-2025 17:00 - 18:00 0 MW

01-09-2025 18:00 - 19:00 0 MW

01-09-2025 19:00 - 20:00 0 MW

01-09-2025 20:00 - 21:00 0 MW

01-09-2025 21:00 - 22:00 0 MW

01-09-2025 22:00 - 23:00 0 MW

01-09-2025 23:00 - 24:00 0 MW

6. Information on exact operational security limit(s) that are expected to be violated in the absence of curtailment*:

Expected violation of operational security limits of physical transmission assets

7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s)*?

During the CC process, all the remedial actions provided by the TSOs are already considered by the CCC in the calculation

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

1. TSO(s)*:

TERNA, RTE

2. Identification of affected Long Term Transmission Rights:

IT-FR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

4. Affected volume in MW / hour for each concerned period:

01-09-2025 06:00 - 07:00 1368 MW

01-09-2025 07:00 - 08:00 1368 MW

01-09-2025 08:00 - 09:00 1368 MW

01-09-2025 09:00 - 10:00 1368 MW

01-09-2025 10:00 - 11:00 1368 MW

01-09-2025 11:00 - 12:00 1368 MW

01-09-2025 12:00 - 13:00 1368 MW

01-09-2025 13:00 - 14:00 1368 MW

01-09-2025 14:00 - 15:00 1368 MW

01-09-2025 15:00 - 16:00 1368 MW

01-09-2025 16:00 - 17:00 1368 MW

01-09-2025 17:00 - 18:00 1368 MW

01-09-2025 18:00 - 19:00 1368 MW

01-09-2025 19:00 - 20:00 1368 MW

01-09-2025 20:00 - 21:00 1368 MW

01-09-2025 21:00 - 22:00 1368 MW

01-09-2025 22:00 - 23:00 1368 MW

01-09-2025 23:00 - 24:00 1368 MW

5. Amount of LTTR remaining after curtailment:

01-09-2025 06:00 - 07:00 1034 MW

01-09-2025 07:00 - 08:00 851 MW

01-09-2025 08:00 - 09:00 851 MW

01-09-2025 09:00 - 10:00 851 MW

01-09-2025 10:00 - 11:00 851 MW

01-09-2025 11:00 - 12:00 851 MW

01-09-2025 12:00 - 13:00 851 MW

01-09-2025 13:00 - 14:00 851 MW

01-09-2025 14:00 - 15:00 851 MW

01-09-2025 15:00 - 16:00 851 MW

01-09-2025 16:00 - 17:00 851 MW

01-09-2025 17:00 - 18:00 851 MW

01-09-2025 18:00 - 19:00 851 MW

01-09-2025 19:00 - 20:00 851 MW

01-09-2025 20:00 - 21:00 851 MW

01-09-2025 21:00 - 22:00 851 MW

01-09-2025 22:00 - 23:00 851 MW

01-09-2025 23:00 - 24:00 1034 MW

6. Information on exact operational security limit(s) that are expected to be violated in the absence of curtailment*:

Expected violation of operational security limits of physical transmission assets

7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s)*?

During the CC process, all the remedial actions provided by the TSOs are already considered by the CCC in the calculation

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

1. TSO(s)*:

  RTE, REE

2. Identification of affected Long Term Transmission Rights:

   ES->FR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

4. Affected volume in MW / hour for each concerned period:

01-09-2025 15:00 - 16:00 1620 MW

01-09-2025 16:00 - 17:00 1620 MW

01-09-2025 17:00 - 18:00 1620 MW

5. Amount of LTTR remaining after curtailment:

01-09-2025 15:00 - 16:00 370 MW

01-09-2025 16:00 - 17:00 370 MW

01-09-2025 17:00 - 18:00 370 MW

6. Information on exact operational security limit(s) that are expected to be violated in the absence of curtailment*:

   01/09/2025

      15:00-16:00 Network Security

      16:00-17:00 Network Security

      17:00-18:00 Network Security

7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s)*?
The available remedial actions were assessed as insufficient or ineffective to avoid the violation of operational security limits

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

As part of our digital transformation journey, JAO will soon roll out a new ticketing platform to improve the way you interact with JAO Support. This next step will make managing your requests easier, faster, and more transparent.

What to Expect

• Enhanced Service Portal – access your full request history, monitor progress in real time, and benefit from a guided virtual assistant when creating a case.
• Email-to-Case Functionality – simply send an email and a case will be created automatically. Your conversation will continue seamlessly in the email thread and remain visible in the portal.

Benefits for You

• Greater transparency on all requests
• Flexibility to choose between the portal or email
• Faster routing and handling of cases

What Stays the Same

• The JAO Service Portal will remain the central hub for all interactions
• Our support teams remain fully available to assist you

Preparing for the Transition

The current and new tools will run in parallel during the transition phase. All open cases will be migrated before the old platform is phased out.

To support you, training materials and account details will be shared soon, followed by dedicated Open Call sessions in September where you can ask questions, explore the platform, and provide feedback. Four sessions will be available to ensure you can join at a convenient time. Please find the invitation attached so you can easily add it to your calendar.

This upcoming launch marks another important step in strengthening our services and making it easier for you to connect with JAO.

1. TSO(s)*:

TERNA, ADMIE

2. Identification of affected Long Term Transmission Rights:

GR-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

4. Affected volume in MW / hour for each concerned period:

31-08-2025 00:00 - 01:00 500 MW

31-08-2025 01:00 - 02:00 500 MW

31-08-2025 02:00 - 03:00 500 MW

31-08-2025 03:00 - 04:00 500 MW

31-08-2025 04:00 - 05:00 500 MW

31-08-2025 05:00 - 06:00 500 MW

31-08-2025 06:00 - 07:00 500 MW

31-08-2025 07:00 - 08:00 500 MW

31-08-2025 08:00 - 09:00 500 MW

31-08-2025 09:00 - 10:00 500 MW

31-08-2025 10:00 - 11:00 500 MW

31-08-2025 11:00 - 12:00 500 MW

31-08-2025 12:00 - 13:00 500 MW

31-08-2025 13:00 - 14:00 500 MW

31-08-2025 14:00 - 15:00 500 MW

31-08-2025 15:00 - 16:00 500 MW

31-08-2025 16:00 - 17:00 500 MW

31-08-2025 17:00 - 18:00 500 MW

31-08-2025 18:00 - 19:00 500 MW

31-08-2025 19:00 - 20:00 500 MW

31-08-2025 20:00 - 21:00 500 MW

31-08-2025 21:00 - 22:00 500 MW

31-08-2025 22:00 - 23:00 500 MW

31-08-2025 23:00 - 24:00 500 MW

5. Amount of LTTR remaining after curtailment:

31-08-2025 00:00 - 01:00 0 MW

31-08-2025 01:00 - 02:00 0 MW

31-08-2025 02:00 - 03:00 0 MW

31-08-2025 03:00 - 04:00 0 MW

31-08-2025 04:00 - 05:00 0 MW

31-08-2025 05:00 - 06:00 0 MW

31-08-2025 06:00 - 07:00 0 MW

31-08-2025 07:00 - 08:00 0 MW

31-08-2025 08:00 - 09:00 0 MW

31-08-2025 09:00 - 10:00 0 MW

31-08-2025 10:00 - 11:00 0 MW

31-08-2025 11:00 - 12:00 0 MW

31-08-2025 12:00 - 13:00 0 MW

31-08-2025 13:00 - 14:00 0 MW

31-08-2025 14:00 - 15:00 0 MW

31-08-2025 15:00 - 16:00 0 MW

31-08-2025 16:00 - 17:00 0 MW

31-08-2025 17:00 - 18:00 0 MW

31-08-2025 18:00 - 19:00 0 MW

31-08-2025 19:00 - 20:00 0 MW

31-08-2025 20:00 - 21:00 0 MW

31-08-2025 21:00 - 22:00 0 MW

31-08-2025 22:00 - 23:00 0 MW

31-08-2025 23:00 - 24:00 0 MW

6. Information on exact operational security limit(s) that are expected to be violated in the absence of curtailment*:

Expected violation of operational security limits of physical transmission assets

 7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s)*?

During the CC process, all the remedial actions provided by the TSOs are already considered by the CCC in the calculation

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication