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Annual Report

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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.

 

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

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Capacity Curtailment on the NSL-GB-N2 border for delivery period 29-10-2026

by JAO

1. TSO(s)*:

NGNSL_IC

2. Identification of affected Long Term Transmission Rights:

NSL-GB-N2

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

29-10-2026 17:00 - 18:00 50 MW

29-10-2026 18:00 - 19:00 50 MW

29-10-2026 19:00 - 20:00 50 MW

29-10-2026 20:00 - 21:00 50 MW

29-10-2026 21:00 - 22:00 50 MW

5. Amount of LTTR remaining after curtailment:

29-10-2026 17:00 - 18:00 0 MW

29-10-2026 18:00 - 19:00 0 MW

29-10-2026 19:00 - 20:00 0 MW

29-10-2026 20:00 - 21:00 0 MW

29-10-2026 21:00 - 22:00 0 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 / unplanned maintenance / NTC restrictions

Capacity Curtailment on the ES-FR border for delivery period 29-10-2026

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:

29-10-2026 09:00 - 10:00 1030 MW

29-10-2026 10:00 - 11:00 1030 MW

29-10-2026 11:00 - 12:00 1030 MW

29-10-2026 12:00 - 13:00 1030 MW

29-10-2026 13:00 - 14:00 1030 MW

29-10-2026 14:00 - 15:00 1030 MW

29-10-2026 15:00 - 16:00 1030 MW

29-10-2026 16:00 - 17:00 1030 MW

29-10-2026 17:00 - 18:00 1030 MW

29-10-2026 18:00 - 19:00 1030 MW

29-10-2026 19:00 - 20:00 1030 MW

29-10-2026 20:00 - 21:00 1030 MW

29-10-2026 21:00 - 22:00 1030 MW

5. Amount of LTTR remaining after curtailment:

29-10-2026 09:00 - 10:00 769 MW

29-10-2026 10:00 - 11:00 769 MW

29-10-2026 11:00 - 12:00 274 MW

29-10-2026 12:00 - 13:00 274 MW

29-10-2026 13:00 - 14:00 274 MW

29-10-2026 14:00 - 15:00 274 MW

29-10-2026 15:00 - 16:00 274 MW

29-10-2026 16:00 - 17:00 769 MW

29-10-2026 17:00 - 18:00 769 MW

29-10-2026 18:00 - 19:00 874 MW

29-10-2026 19:00 - 20:00 471 MW

29-10-2026 20:00 - 21:00 366 MW

29-10-2026 21:00 - 22:00 572 MW


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

   29/10/2026

      09:00-10:00 Dambron - Verger

      10:00-11:00 Dambron - Verger

      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

      17:00-18:00 Dambron - Verger

      18:00-19:00 Network Security

      19:00-20:00 Network Security

      20:00-21:00 Network Security

      21:00-22:00 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 GR-IT border for delivery period 29-10-2026

by JAO

1. TSO(s)*:

TERNA

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:

29-10-2026 00:00 - 01:00 500 MW

29-10-2026 01:00 - 02:00 500 MW

29-10-2026 02:00 - 03:00 500 MW

29-10-2026 03:00 - 04:00 500 MW

29-10-2026 04:00 - 05:00 500 MW

29-10-2026 05:00 - 06:00 500 MW

29-10-2026 06:00 - 07:00 500 MW

29-10-2026 07:00 - 08:00 500 MW

29-10-2026 08:00 - 09:00 500 MW

29-10-2026 09:00 - 10:00 500 MW

29-10-2026 10:00 - 11:00 500 MW

29-10-2026 11:00 - 12:00 500 MW

29-10-2026 12:00 - 13:00 500 MW

29-10-2026 13:00 - 14:00 500 MW

29-10-2026 14:00 - 15:00 500 MW

29-10-2026 15:00 - 16:00 500 MW

29-10-2026 16:00 - 17:00 500 MW

29-10-2026 17:00 - 18:00 500 MW

29-10-2026 18:00 - 19:00 500 MW

29-10-2026 19:00 - 20:00 500 MW

29-10-2026 20:00 - 21:00 500 MW

29-10-2026 21:00 - 22:00 500 MW

29-10-2026 22:00 - 23:00 500 MW

29-10-2026 23:00 - 24:00 500 MW

5. Amount of LTTR remaining after curtailment:

29-10-2026 00:00 - 01:00 0 MW

29-10-2026 01:00 - 02:00 0 MW

29-10-2026 02:00 - 03:00 0 MW

29-10-2026 03:00 - 04:00 0 MW

29-10-2026 04:00 - 05:00 0 MW

29-10-2026 05:00 - 06:00 0 MW

29-10-2026 06:00 - 07:00 0 MW

29-10-2026 07:00 - 08:00 0 MW

29-10-2026 08:00 - 09:00 0 MW

29-10-2026 09:00 - 10:00 0 MW

29-10-2026 10:00 - 11:00 0 MW

29-10-2026 11:00 - 12:00 0 MW

29-10-2026 12:00 - 13:00 0 MW

29-10-2026 13:00 - 14:00 0 MW

29-10-2026 14:00 - 15:00 0 MW

29-10-2026 15:00 - 16:00 0 MW

29-10-2026 16:00 - 17:00 0 MW

29-10-2026 17:00 - 18:00 0 MW

29-10-2026 18:00 - 19:00 0 MW

29-10-2026 19:00 - 20:00 0 MW

29-10-2026 20:00 - 21:00 0 MW

29-10-2026 21:00 - 22:00 0 MW

29-10-2026 22:00 - 23:00 0 MW

29-10-2026 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*:

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 IT-FR border for delivery period 29-10-2026

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:

29-10-2026 17:00 - 18:00 1495 MW

29-10-2026 18:00 - 19:00 1495 MW

29-10-2026 19:00 - 20:00 1495 MW

29-10-2026 20:00 - 21:00 1495 MW

5. Amount of LTTR remaining after curtailment:

29-10-2026 17:00 - 18:00 976 MW

29-10-2026 18:00 - 19:00 976 MW

29-10-2026 19:00 - 20:00 976 MW

29-10-2026 20:00 - 21:00 976 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 IT-SI border for delivery period 29-10-2026

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:

29-10-2026 17:00 - 18:00 334 MW

29-10-2026 18:00 - 19:00 334 MW

29-10-2026 19:00 - 20:00 334 MW

29-10-2026 20:00 - 21:00 334 MW

5. Amount of LTTR remaining after curtailment:

29-10-2026 17:00 - 18:00 58 MW

29-10-2026 18:00 - 19:00 30 MW

29-10-2026 19:00 - 20:00 30 MW

29-10-2026 20:00 - 21:00 30 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 IT-CH border for delivery period 29-10-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-CH

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

29-10-2026 17:00 - 18:00 925 MW

29-10-2026 18:00 - 19:00 925 MW

29-10-2026 19:00 - 20:00 925 MW

29-10-2026 20:00 - 21:00 925 MW

5. Amount of LTTR remaining after curtailment:

29-10-2026 17:00 - 18:00 894 MW

29-10-2026 18:00 - 19:00 894 MW

29-10-2026 19:00 - 20:00 894 MW

29-10-2026 20:00 - 21:00 894 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 IT-GR border for delivery period 29-10-2026

by JAO

1. TSO(s)*:

TERNA

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:

29-10-2026 00:00 - 01:00 500 MW

29-10-2026 01:00 - 02:00 500 MW

29-10-2026 02:00 - 03:00 500 MW

29-10-2026 03:00 - 04:00 500 MW

29-10-2026 04:00 - 05:00 500 MW

29-10-2026 05:00 - 06:00 500 MW

29-10-2026 06:00 - 07:00 500 MW

29-10-2026 07:00 - 08:00 500 MW

29-10-2026 08:00 - 09:00 500 MW

29-10-2026 09:00 - 10:00 500 MW

29-10-2026 10:00 - 11:00 500 MW

29-10-2026 11:00 - 12:00 500 MW

29-10-2026 12:00 - 13:00 500 MW

29-10-2026 13:00 - 14:00 500 MW

29-10-2026 14:00 - 15:00 500 MW

29-10-2026 15:00 - 16:00 500 MW

29-10-2026 16:00 - 17:00 500 MW

29-10-2026 17:00 - 18:00 500 MW

29-10-2026 18:00 - 19:00 500 MW

29-10-2026 19:00 - 20:00 500 MW

29-10-2026 20:00 - 21:00 500 MW

29-10-2026 21:00 - 22:00 500 MW

29-10-2026 22:00 - 23:00 500 MW

29-10-2026 23:00 - 24:00 500 MW

5. Amount of LTTR remaining after curtailment:

29-10-2026 00:00 - 01:00 0 MW

29-10-2026 01:00 - 02:00 0 MW

29-10-2026 02:00 - 03:00 0 MW

29-10-2026 03:00 - 04:00 0 MW

29-10-2026 04:00 - 05:00 0 MW

29-10-2026 05:00 - 06:00 0 MW

29-10-2026 06:00 - 07:00 0 MW

29-10-2026 07:00 - 08:00 0 MW

29-10-2026 08:00 - 09:00 0 MW

29-10-2026 09:00 - 10:00 0 MW

29-10-2026 10:00 - 11:00 0 MW

29-10-2026 11:00 - 12:00 0 MW

29-10-2026 12:00 - 13:00 0 MW

29-10-2026 13:00 - 14:00 0 MW

29-10-2026 14:00 - 15:00 0 MW

29-10-2026 15:00 - 16:00 0 MW

29-10-2026 16:00 - 17:00 0 MW

29-10-2026 17:00 - 18:00 0 MW

29-10-2026 18:00 - 19:00 0 MW

29-10-2026 19:00 - 20:00 0 MW

29-10-2026 20:00 - 21:00 0 MW

29-10-2026 21:00 - 22:00 0 MW

29-10-2026 22:00 - 23:00 0 MW

29-10-2026 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*:

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

Resource Center

This section contains key information for market participants such as user guides, forms, auction rules, nomination deadlines and other documents.

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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. 

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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We created a user guide to support the onboarding of market participants. Learn more about the steps to register, the required documents and our service desk platform.

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

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