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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 HU-AT border for delivery period 05-05-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

HU-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

05-05-2026 08:00 - 09:00 48 MW

05-05-2026 09:00 - 10:00 48 MW

05-05-2026 10:00 - 11:00 48 MW

05-05-2026 11:00 - 12:00 48 MW

05-05-2026 12:00 - 13:00 48 MW

05-05-2026 13:00 - 14:00 48 MW

05-05-2026 14:00 - 15:00 48 MW

05-05-2026 15:00 - 16:00 48 MW

05-05-2026 16:00 - 17:00 48 MW

5. Amount of LTTR remaining after curtailment:

05-05-2026 08:00 - 09:00 25 MW

05-05-2026 09:00 - 10:00 21 MW

05-05-2026 10:00 - 11:00 14 MW

05-05-2026 11:00 - 12:00 13 MW

05-05-2026 12:00 - 13:00 13 MW

05-05-2026 13:00 - 14:00 10 MW

05-05-2026 14:00 - 15:00 10 MW

05-05-2026 15:00 - 16:00 14 MW

05-05-2026 16:00 - 17:00 24 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 SI-AT border for delivery period 05-05-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

SI-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

05-05-2026 08:00 - 09:00 370 MW

05-05-2026 09:00 - 10:00 370 MW

05-05-2026 10:00 - 11:00 370 MW

05-05-2026 11:00 - 12:00 370 MW

05-05-2026 12:00 - 13:00 370 MW

05-05-2026 13:00 - 14:00 370 MW

05-05-2026 14:00 - 15:00 370 MW

05-05-2026 15:00 - 16:00 370 MW

05-05-2026 16:00 - 17:00 370 MW

5. Amount of LTTR remaining after curtailment:

05-05-2026 08:00 - 09:00 128 MW

05-05-2026 09:00 - 10:00 91 MW

05-05-2026 10:00 - 11:00 71 MW

05-05-2026 11:00 - 12:00 68 MW

05-05-2026 12:00 - 13:00 68 MW

05-05-2026 13:00 - 14:00 52 MW

05-05-2026 14:00 - 15:00 54 MW

05-05-2026 15:00 - 16:00 73 MW

05-05-2026 16:00 - 17:00 104 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 AT-CZ border for delivery period 05-05-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

AT-CZ

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

05-05-2026 08:00 - 09:00 350 MW

05-05-2026 09:00 - 10:00 350 MW

05-05-2026 10:00 - 11:00 350 MW

05-05-2026 11:00 - 12:00 350 MW

05-05-2026 12:00 - 13:00 350 MW

05-05-2026 13:00 - 14:00 350 MW

05-05-2026 14:00 - 15:00 350 MW

05-05-2026 15:00 - 16:00 350 MW

05-05-2026 16:00 - 17:00 350 MW

5. Amount of LTTR remaining after curtailment:

05-05-2026 08:00 - 09:00 208 MW

05-05-2026 09:00 - 10:00 149 MW

05-05-2026 10:00 - 11:00 144 MW

05-05-2026 11:00 - 12:00 37 MW

05-05-2026 12:00 - 13:00 119 MW

05-05-2026 13:00 - 14:00 119 MW

05-05-2026 14:00 - 15:00 62 MW

05-05-2026 15:00 - 16:00 69 MW

05-05-2026 16:00 - 17:00 96 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 AT-DE border for delivery period 05-05-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

AT-DE

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

05-05-2026 08:00 - 09:00 3620 MW

05-05-2026 09:00 - 10:00 3620 MW

05-05-2026 10:00 - 11:00 3620 MW

05-05-2026 11:00 - 12:00 3620 MW

05-05-2026 12:00 - 13:00 3620 MW

05-05-2026 13:00 - 14:00 3620 MW

05-05-2026 14:00 - 15:00 3620 MW

05-05-2026 15:00 - 16:00 3620 MW

05-05-2026 16:00 - 17:00 3620 MW

5. Amount of LTTR remaining after curtailment:

05-05-2026 08:00 - 09:00 2944 MW

05-05-2026 09:00 - 10:00 1448 MW

05-05-2026 10:00 - 11:00 1458 MW

05-05-2026 11:00 - 12:00 596 MW

05-05-2026 12:00 - 13:00 1308 MW

05-05-2026 13:00 - 14:00 1338 MW

05-05-2026 14:00 - 15:00 850 MW

05-05-2026 15:00 - 16:00 989 MW

05-05-2026 16:00 - 17:00 1289 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 ES-FR border for delivery period 05-05-2026

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:

05-05-2026 11:00 - 12:00 680 MW

05-05-2026 12:00 - 13:00 680 MW

05-05-2026 13:00 - 14:00 680 MW

05-05-2026 14:00 - 15:00 680 MW

05-05-2026 15:00 - 16:00 680 MW

05-05-2026 16:00 - 17:00 680 MW

5. Amount of LTTR remaining after curtailment:

05-05-2026 11:00 - 12:00 481 MW

05-05-2026 12:00 - 13:00 481 MW

05-05-2026 13:00 - 14:00 481 MW

05-05-2026 14:00 - 15:00 481 MW

05-05-2026 15:00 - 16:00 481 MW

05-05-2026 16:00 - 17:00 481 MW

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

   05/05/2026

      11:00-12:00 BRAUD-PREGUILLAC 2

      12:00-13:00 BRAUD-PREGUILLAC 2

      13:00-14:00 BRAUD-PREGUILLAC 2

      14:00-15:00 BRAUD-PREGUILLAC 2

      15:00-16:00 BRAUD-PREGUILLAC 2

      16:00-17:00 BRAUD-PREGUILLAC 2

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

Capacity Curtailment on the IF1-FR-GB border for delivery period 17-05-2026

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:

17-05-2026 00:00 - 01:00 1900 MW

17-05-2026 01:00 - 02:00 1900 MW

17-05-2026 02:00 - 03:00 1900 MW

17-05-2026 03:00 - 04:00 1900 MW

17-05-2026 04:00 - 05:00 1900 MW

17-05-2026 05:00 - 06:00 1900 MW

17-05-2026 06:00 - 07:00 1900 MW

17-05-2026 07:00 - 08:00 1900 MW

17-05-2026 08:00 - 09:00 1900 MW

17-05-2026 09:00 - 10:00 1900 MW

17-05-2026 10:00 - 11:00 1900 MW

17-05-2026 11:00 - 12:00 1900 MW

17-05-2026 12:00 - 13:00 1900 MW

17-05-2026 13:00 - 14:00 1900 MW

17-05-2026 14:00 - 15:00 1900 MW

17-05-2026 15:00 - 16:00 1900 MW

17-05-2026 16:00 - 17:00 1900 MW

17-05-2026 17:00 - 18:00 1900 MW

17-05-2026 18:00 - 19:00 1900 MW

17-05-2026 19:00 - 20:00 1900 MW

17-05-2026 20:00 - 21:00 1900 MW

17-05-2026 21:00 - 22:00 1900 MW

17-05-2026 22:00 - 23:00 1900 MW

17-05-2026 23:00 - 24:00 1900 MW

5. Amount of LTTR remaining after curtailment:

17-05-2026 00:00 - 01:00 1448 MW

17-05-2026 01:00 - 02:00 1448 MW

17-05-2026 02:00 - 03:00 1448 MW

17-05-2026 03:00 - 04:00 1448 MW

17-05-2026 04:00 - 05:00 1448 MW

17-05-2026 05:00 - 06:00 1448 MW

17-05-2026 06:00 - 07:00 1448 MW

17-05-2026 07:00 - 08:00 1448 MW

17-05-2026 08:00 - 09:00 1448 MW

17-05-2026 09:00 - 10:00 1448 MW

17-05-2026 10:00 - 11:00 1448 MW

17-05-2026 11:00 - 12:00 1448 MW

17-05-2026 12:00 - 13:00 1448 MW

17-05-2026 13:00 - 14:00 1448 MW

17-05-2026 14:00 - 15:00 1448 MW

17-05-2026 15:00 - 16:00 1448 MW

17-05-2026 16:00 - 17:00 1448 MW

17-05-2026 17:00 - 18:00 1448 MW

17-05-2026 18:00 - 19:00 1448 MW

17-05-2026 19:00 - 20:00 1448 MW

17-05-2026 20:00 - 21:00 1448 MW

17-05-2026 21:00 - 22:00 1448 MW

17-05-2026 22:00 - 23:00 1448 MW

17-05-2026 23:00 - 24:00 1448 MW

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

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

*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 17-05-2026

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:

17-05-2026 00:00 - 01:00 1889 MW

17-05-2026 01:00 - 02:00 1889 MW

17-05-2026 02:00 - 03:00 1889 MW

17-05-2026 03:00 - 04:00 1889 MW

17-05-2026 04:00 - 05:00 1889 MW

17-05-2026 05:00 - 06:00 1889 MW

17-05-2026 06:00 - 07:00 1889 MW

17-05-2026 07:00 - 08:00 1889 MW

17-05-2026 08:00 - 09:00 1889 MW

17-05-2026 09:00 - 10:00 1889 MW

17-05-2026 10:00 - 11:00 1889 MW

17-05-2026 11:00 - 12:00 1889 MW

17-05-2026 12:00 - 13:00 1889 MW

17-05-2026 13:00 - 14:00 1889 MW

17-05-2026 14:00 - 15:00 1889 MW

17-05-2026 15:00 - 16:00 1889 MW

17-05-2026 16:00 - 17:00 1889 MW

17-05-2026 17:00 - 18:00 1889 MW

17-05-2026 18:00 - 19:00 1889 MW

17-05-2026 19:00 - 20:00 1889 MW

17-05-2026 20:00 - 21:00 1889 MW

17-05-2026 21:00 - 22:00 1889 MW

17-05-2026 22:00 - 23:00 1889 MW

17-05-2026 23:00 - 24:00 1889 MW

5. Amount of LTTR remaining after curtailment:

17-05-2026 00:00 - 01:00 1416 MW

17-05-2026 01:00 - 02:00 1416 MW

17-05-2026 02:00 - 03:00 1416 MW

17-05-2026 03:00 - 04:00 1416 MW

17-05-2026 04:00 - 05:00 1416 MW

17-05-2026 05:00 - 06:00 1416 MW

17-05-2026 06:00 - 07:00 1416 MW

17-05-2026 07:00 - 08:00 1416 MW

17-05-2026 08:00 - 09:00 1416 MW

17-05-2026 09:00 - 10:00 1416 MW

17-05-2026 10:00 - 11:00 1416 MW

17-05-2026 11:00 - 12:00 1416 MW

17-05-2026 12:00 - 13:00 1416 MW

17-05-2026 13:00 - 14:00 1416 MW

17-05-2026 14:00 - 15:00 1416 MW

17-05-2026 15:00 - 16:00 1416 MW

17-05-2026 16:00 - 17:00 1416 MW

17-05-2026 17:00 - 18:00 1416 MW

17-05-2026 18:00 - 19:00 1416 MW

17-05-2026 19:00 - 20:00 1416 MW

17-05-2026 20:00 - 21:00 1416 MW

17-05-2026 21:00 - 22:00 1416 MW

17-05-2026 22:00 - 23:00 1416 MW

17-05-2026 23:00 - 24:00 1416 MW

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

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

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

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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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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