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

Through our single trading platform we auction cross-border transmission capacity rights. We also provide accounting (clearing and settlement), contracting, reporting, project support and IT services.

 

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Auctions

On behalf of TSOs, we organize long and short-term auctions of transmission capacity rights.

We offer the following products: yearly, seasonal, quarterly, monthly, weekly, daily and intraday.

Auction results Auction calendar
OPS
  • 500+
    Registered market participants
  • 26k+
    Auctions held annually
  • 100%
    Auction tool availability
  • 80+
    Employees
  • 50
    TSOs serviced

Latest market messages

Capacity Curtailment on the IF1-FR-GB border for delivery period 11-08-2026

by JAO

1. TSO(s)*:

RNP

2. Identification of affected Long Term Transmission Rights:

IF1-FR-GB

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

11-08-2026 00:00 - 01:00 1900 MW

11-08-2026 01:00 - 02:00 1900 MW

11-08-2026 02:00 - 03:00 1900 MW

11-08-2026 03:00 - 04:00 1900 MW

11-08-2026 04:00 - 05:00 1900 MW

11-08-2026 05:00 - 06:00 1900 MW

11-08-2026 06:00 - 07:00 1900 MW

11-08-2026 07:00 - 08:00 1900 MW

11-08-2026 08:00 - 09:00 1900 MW

11-08-2026 09:00 - 10:00 1900 MW

11-08-2026 10:00 - 11:00 1900 MW

11-08-2026 11:00 - 12:00 1900 MW

11-08-2026 12:00 - 13:00 1900 MW

11-08-2026 13:00 - 14:00 1900 MW

11-08-2026 14:00 - 15:00 1900 MW

11-08-2026 15:00 - 16:00 1900 MW

11-08-2026 16:00 - 17:00 1900 MW

11-08-2026 17:00 - 18:00 1900 MW

11-08-2026 18:00 - 19:00 1900 MW

11-08-2026 19:00 - 20:00 1900 MW

11-08-2026 20:00 - 21:00 1900 MW

11-08-2026 21:00 - 22:00 1900 MW

11-08-2026 22:00 - 23:00 1900 MW

11-08-2026 23:00 - 24:00 1900 MW

5. Amount of LTTR remaining after curtailment:

11-08-2026 00:00 - 01:00 1900 MW

11-08-2026 01:00 - 02:00 1900 MW

11-08-2026 02:00 - 03:00 1900 MW

11-08-2026 03:00 - 04:00 1900 MW

11-08-2026 04:00 - 05:00 1900 MW

11-08-2026 05:00 - 06:00 1900 MW

11-08-2026 06:00 - 07:00 1900 MW

11-08-2026 07:00 - 08:00 1900 MW

11-08-2026 08:00 - 09:00 1900 MW

11-08-2026 09:00 - 10:00 1900 MW

11-08-2026 10:00 - 11:00 1900 MW

11-08-2026 11:00 - 12:00 1900 MW

11-08-2026 12:00 - 13:00 1900 MW

11-08-2026 13:00 - 14:00 1900 MW

11-08-2026 14:00 - 15:00 1900 MW

11-08-2026 15:00 - 16:00 1900 MW

11-08-2026 16:00 - 17:00 1900 MW

11-08-2026 17:00 - 18:00 1900 MW

11-08-2026 18:00 - 19:00 1900 MW

11-08-2026 19:00 - 20:00 1900 MW

11-08-2026 20:00 - 21:00 1900 MW

11-08-2026 21:00 - 22:00 1900 MW

11-08-2026 22:00 - 23:00 1900 MW

11-08-2026 23:00 - 24:00 1900 MW

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

Thermal Limits

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

Capacity limitation due to planned maintenance

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

Capacity Curtailment on the IF1-GB-FR border for delivery period 11-08-2026

by JAO

1. TSO(s)*:

RNP

2. Identification of affected Long Term Transmission Rights:

IF1-GB-FR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

10-08-2026 00:00 - 01:00 1896 MW

10-08-2026 01:00 - 02:00 1896 MW

10-08-2026 02:00 - 03:00 1896 MW

10-08-2026 03:00 - 04:00 1896 MW

10-08-2026 04:00 - 05:00 1896 MW

10-08-2026 05:00 - 06:00 1896 MW

10-08-2026 06:00 - 07:00 1896 MW

10-08-2026 07:00 - 08:00 1896 MW

10-08-2026 08:00 - 09:00 1896 MW

10-08-2026 09:00 - 10:00 1896 MW

10-08-2026 10:00 - 11:00 1896 MW

10-08-2026 11:00 - 12:00 1896 MW

10-08-2026 12:00 - 13:00 1896 MW

10-08-2026 13:00 - 14:00 1896 MW

10-08-2026 14:00 - 15:00 1896 MW

10-08-2026 15:00 - 16:00 1896 MW

10-08-2026 16:00 - 17:00 1896 MW

10-08-2026 17:00 - 18:00 1896 MW

10-08-2026 18:00 - 19:00 1896 MW

10-08-2026 19:00 - 20:00 1896 MW

10-08-2026 20:00 - 21:00 1896 MW

10-08-2026 21:00 - 22:00 1896 MW

10-08-2026 22:00 - 23:00 1896 MW

10-08-2026 23:00 - 24:00 1896 MW

5. Amount of LTTR remaining after curtailment:

10-08-2026 00:00 - 01:00 923 MW

10-08-2026 01:00 - 02:00 923 MW

10-08-2026 02:00 - 03:00 923 MW

10-08-2026 03:00 - 04:00 923 MW

10-08-2026 04:00 - 05:00 923 MW

10-08-2026 05:00 - 06:00 923 MW

10-08-2026 06:00 - 07:00 923 MW

10-08-2026 07:00 - 08:00 923 MW

10-08-2026 08:00 - 09:00 923 MW

10-08-2026 09:00 - 10:00 923 MW

10-08-2026 10:00 - 11:00 923 MW

10-08-2026 11:00 - 12:00 923 MW

10-08-2026 12:00 - 13:00 923 MW

10-08-2026 13:00 - 14:00 923 MW

10-08-2026 14:00 - 15:00 923 MW

10-08-2026 15:00 - 16:00 923 MW

10-08-2026 16:00 - 17:00 923 MW

10-08-2026 17:00 - 18:00 923 MW

10-08-2026 18:00 - 19:00 923 MW

10-08-2026 19:00 - 20:00 923 MW

10-08-2026 20:00 - 21:00 923 MW

10-08-2026 21:00 - 22:00 923 MW

10-08-2026 22:00 - 23:00 923 MW

10-08-2026 23:00 - 24:00 923 MW

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

Thermal Limits

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

Capacity limitation due to planned maintenance

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

Capacity Curtailment on the FR-ES border for delivery period 11-08-2026

by JAO

1. TSO(s)*:

RTE-TSO

2. Identification of affected Long Term Transmission Rights:

FR-ES

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

11-08-2026 08:00 - 09:00 1559 MW

11-08-2026 09:00 - 10:00 1559 MW

11-08-2026 10:00 - 11:00 1559 MW

11-08-2026 11:00 - 12:00 1559 MW

11-08-2026 12:00 - 13:00 1559 MW

11-08-2026 13:00 - 14:00 1559 MW

11-08-2026 14:00 - 15:00 1559 MW

11-08-2026 15:00 - 16:00 1559 MW

11-08-2026 16:00 - 17:00 1559 MW

11-08-2026 17:00 - 18:00 1559 MW

11-08-2026 18:00 - 19:00 1559 MW

11-08-2026 19:00 - 20:00 1559 MW

11-08-2026 20:00 - 21:00 1559 MW

5. Amount of LTTR remaining after curtailment:

11-08-2026 08:00 - 09:00 1171 MW

11-08-2026 09:00 - 10:00 1171 MW

11-08-2026 10:00 - 11:00 1171 MW

11-08-2026 11:00 - 12:00 1171 MW

11-08-2026 12:00 - 13:00 1171 MW

11-08-2026 13:00 - 14:00 1171 MW

11-08-2026 14:00 - 15:00 1171 MW

11-08-2026 15:00 - 16:00 1171 MW

11-08-2026 16:00 - 17:00 1171 MW

11-08-2026 17:00 - 18:00 1171 MW

11-08-2026 18:00 - 19:00 1171 MW

11-08-2026 19:00 - 20:00 1171 MW

11-08-2026 20:00 - 21:00 1171 MW

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

11/08/2026

      08:00-09:00 BRAUD - CUBNEZAIS 4

      09:00-10:00 BRAUD - CUBNEZAIS 4

      10:00-11:00 BRAUD - CUBNEZAIS 4

      11:00-12:00 BRAUD - CUBNEZAIS 4

      12:00-13:00 BRAUD - CUBNEZAIS 4

      13:00-14:00 BRAUD - CUBNEZAIS 4

      14:00-15:00 BRAUD - CUBNEZAIS 4

      15:00-16:00 BRAUD - CUBNEZAIS 4

      16:00-17:00 BRAUD - CUBNEZAIS 4

      17:00-18:00 BRAUD - CUBNEZAIS 4

      18:00-19:00 BRAUD - CUBNEZAIS 4

      19:00-20:00 BRAUD - CUBNEZAIS 4

      20:00-21:00 BRAUD - CUBNEZAIS

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

Capacity Curtailment on the ES-FR border for delivery period 11-08-2026

by JAO

1. TSO(s)*:

RTE-TSO

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:

11-08-2026 11:00 - 12:00 674 MW

11-08-2026 12:00 - 13:00 674 MW

11-08-2026 13:00 - 14:00 674 MW

11-08-2026 14:00 - 15:00 674 MW

11-08-2026 15:00 - 16:00 674 MW

11-08-2026 16:00 - 17:00 674 MW

5. Amount of LTTR remaining after curtailment:

11-08-2026 11:00 - 12:00 276 MW

11-08-2026 12:00 - 13:00 276 MW

11-08-2026 13:00 - 14:00 276 MW

11-08-2026 14:00 - 15:00 276 MW

11-08-2026 15:00 - 16:00 276 MW

11-08-2026 16:00 - 17:00 276 MW

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

   11/08/2026

      11:00-12:00 Dambron - Verger

      12:00-13:00 Dambron - Verger

      13:00-14:00 Dambron - Verger

      14:00-15:00 Dambron - Verger

      15:00-16:00 Dambron - Verger

      16:00-17:00 Dambron - Verger

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

Capacity Curtailment on the IT-SI border for delivery period 11-08-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-SI

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

11-08-2026 19:00 - 20:00 250 MW

11-08-2026 20:00 - 21:00 250 MW

11-08-2026 21:00 - 22:00 250 MW

5. Amount of LTTR remaining after curtailment:

11-08-2026 19:00 - 20:00 0 MW

11-08-2026 20:00 - 21:00 0 MW

11-08-2026 21:00 - 22:00 140 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

Capacity Curtailment on the IT-CH border for delivery period 11-08-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-CH

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:

11-08-2026 19:00 - 20:00 720 MW

11-08-2026 20:00 - 21:00 720 MW

11-08-2026 21:00 - 22:00 720 MW

5. Amount of LTTR remaining after curtailment:

11-08-2026 19:00 - 20:00 417 MW

11-08-2026 20:00 - 21:00 417 MW

11-08-2026 21:00 - 22:00 346 MW

Capacity Curtailment on the IT-FR border for delivery period 11-08-2026

by JAO

1. TSO(s)*:

TERNA

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:

11-08-2026 18:00 - 19:00 1369 MW

11-08-2026 19:00 - 20:00 1369 MW

11-08-2026 20:00 - 21:00 1369 MW

11-08-2026 21:00 - 22:00 1369 MW

11-08-2026 22:00 - 23:00 1369 MW

5. Amount of LTTR remaining after curtailment:

11-08-2026 18:00 - 19:00 1051 MW

11-08-2026 19:00 - 20:00 495 MW

11-08-2026 20:00 - 21:00 495 MW

11-08-2026 21:00 - 22:00 416 MW

11-08-2026 22:00 - 23:00 1118 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

Our certifications

JAO has successfully implemented internationally recognized management systems and is now officially certified for ISO/IEC 27001:2022 – the global standard for Information Security Management Systems and for ISO 9001 – the international standard for Quality Management Systems. 

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IT

About us

We started as a shared auction platform for transmission capacity across Central Western Europe in 2008. Over time, we became the operator of the Single Allocation Platform and therefore the leading trading platform for European Transmission System Operators.

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Check out the common questions and our answers on how to use the auction platform.

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