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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 ES-FR border for delivery period 10-03-2026

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:

10-03-2026 07:00 - 08:00 1830 MW

10-03-2026 08:00 - 09:00 1830 MW

10-03-2026 19:00 - 20:00 1830 MW

10-03-2026 20:00 - 21:00 1830 MW

10-03-2026 21:00 - 22:00 1830 MW

10-03-2026 22:00 - 23:00 1830 MW

5. Amount of LTTR remaining after curtailment:

10-03-2026 07:00 - 08:00 1680 MW

10-03-2026 08:00 - 09:00 1467 MW

10-03-2026 19:00 - 20:00 275 MW

10-03-2026 20:00 - 21:00 0 MW

10-03-2026 21:00 - 22:00 0 MW

10-03-2026 22:00 - 23:00 1369 MW

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

07:00-08:00 Network Security 08:00-09:00 Network Security 19:00-20:00 Network Security 20:00-21:00 Network Security 21:00-22:00 Network Security 22:00-23:00 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

Capacity Curtailment on the SI-AT border for delivery period 09-03-2026

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:

09-03-2026 07:00 - 08:00 430 MW

09-03-2026 08:00 - 09:00 430 MW

09-03-2026 09:00 - 10:00 430 MW

09-03-2026 10:00 - 11:00 430 MW

09-03-2026 11:00 - 12:00 430 MW

09-03-2026 12:00 - 13:00 430 MW

09-03-2026 13:00 - 14:00 430 MW

09-03-2026 14:00 - 15:00 430 MW

5. Amount of LTTR remaining after curtailment:

09-03-2026 07:00 - 08:00 253 MW

09-03-2026 08:00 - 09:00 189 MW

09-03-2026 09:00 - 10:00 213 MW

09-03-2026 10:00 - 11:00 313 MW

09-03-2026 11:00 - 12:00 218 MW

09-03-2026 12:00 - 13:00 220 MW

09-03-2026 13:00 - 14:00 266 MW

09-03-2026 14:00 - 15:00 309 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

Capacity Curtailment on the HU-AT border for delivery period 09-03-2026

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:

09-03-2026 08:00 - 09:00 340 MW

09-03-2026 09:00 - 10:00 340 MW

09-03-2026 10:00 - 11:00 340 MW

09-03-2026 11:00 - 12:00 340 MW

09-03-2026 12:00 - 13:00 340 MW

09-03-2026 13:00 - 14:00 340 MW

09-03-2026 14:00 - 15:00 340 MW

5. Amount of LTTR remaining after curtailment:

09-03-2026 08:00 - 09:00 266 MW

09-03-2026 09:00 - 10:00 203 MW

09-03-2026 10:00 - 11:00 235 MW

09-03-2026 11:00 - 12:00 203 MW

09-03-2026 12:00 - 13:00 199 MW

09-03-2026 13:00 - 14:00 232 MW

09-03-2026 14:00 - 15:00 232 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

Capacity Curtailment on the AT-DE border for delivery period 09-03-2026

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:

09-03-2026 07:00 - 08:00 4420 MW

09-03-2026 08:00 - 09:00 4420 MW

09-03-2026 09:00 - 10:00 4420 MW

09-03-2026 10:00 - 11:00 4420 MW

09-03-2026 11:00 - 12:00 4420 MW

09-03-2026 12:00 - 13:00 4420 MW

09-03-2026 13:00 - 14:00 4420 MW

09-03-2026 14:00 - 15:00 4420 MW

5. Amount of LTTR remaining after curtailment:

09-03-2026 07:00 - 08:00 1163 MW

09-03-2026 08:00 - 09:00 704 MW

09-03-2026 09:00 - 10:00 812 MW

09-03-2026 10:00 - 11:00 889 MW

09-03-2026 11:00 - 12:00 832 MW

09-03-2026 12:00 - 13:00 823 MW

09-03-2026 13:00 - 14:00 946 MW

09-03-2026 14:00 - 15:00 1454 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

Capacity Curtailment on the AT-CZ border for delivery period 09-03-2026

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:

09-03-2026 07:00 - 08:00 350 MW

09-03-2026 08:00 - 09:00 350 MW

09-03-2026 09:00 - 10:00 350 MW

09-03-2026 10:00 - 11:00 350 MW

09-03-2026 11:00 - 12:00 350 MW

09-03-2026 12:00 - 13:00 350 MW

09-03-2026 13:00 - 14:00 350 MW

09-03-2026 14:00 - 15:00 350 MW

5. Amount of LTTR remaining after curtailment:

09-03-2026 07:00 - 08:00 86 MW

09-03-2026 08:00 - 09:00 44 MW

09-03-2026 09:00 - 10:00 68 MW

09-03-2026 10:00 - 11:00 71 MW

09-03-2026 11:00 - 12:00 70 MW

09-03-2026 12:00 - 13:00 70 MW

09-03-2026 13:00 - 14:00 80 MW

09-03-2026 14:00 - 15:00 121 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

Publication of Prefinal computation data for Business Day 09/03/2026

by JAO

We would like to inform you that the prefinal computation data for business day 09/03/2026 on the CORE CCR Publication Tool will be published with a delay, as the required data is not yet available in CCCT.

Thank you for your understanding.

Kind regards,

JAO Operations

Capacity Curtailment on the ES-FR border for delivery period 09-03-2026

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:

09-03-2026 18:00 - 19:00 1830 MW

09-03-2026 19:00 - 20:00 1830 MW

09-03-2026 20:00 - 21:00 1830 MW

09-03-2026 21:00 - 22:00 1830 MW

09-03-2026 22:00 - 23:00 1830 MW

09-03-2026 23:00 - 24:00 1830 MW

5. Amount of LTTR remaining after curtailment:

09-03-2026 18:00 - 19:00 472 MW

09-03-2026 19:00 - 20:00 472 MW

09-03-2026 20:00 - 21:00 255 MW

09-03-2026 21:00 - 22:00 302 MW

09-03-2026 22:00 - 23:00 472 MW

09-03-2026 23:00 - 24:00 472 MW

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

      18:00-19:00 Network Security

      19:00-20:00 Network Security

      20:00-21:00 Network Security

      21:00-22:00 Network Security

      22:00-23:00 Network Security

      23:00-24:00 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

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. 

ISO
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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Frequently asked questions

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

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