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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.

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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 FR-CH border for delivery period 31-10-2026

by JAO

1. TSO(s)*:

RTE-TSO

2. Identification of affected Long Term Transmission Rights:

FR-CH

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

31-10-2026 00:00 - 01:00 370 MW

31-10-2026 01:00 - 02:00 370 MW

31-10-2026 02:00 - 03:00 370 MW

31-10-2026 03:00 - 04:00 370 MW

31-10-2026 04:00 - 05:00 370 MW

31-10-2026 05:00 - 06:00 370 MW

31-10-2026 06:00 - 07:00 370 MW

31-10-2026 07:00 - 08:00 370 MW

31-10-2026 08:00 - 09:00 370 MW

31-10-2026 09:00 - 10:00 370 MW

31-10-2026 10:00 - 11:00 370 MW

31-10-2026 11:00 - 12:00 370 MW

31-10-2026 12:00 - 13:00 370 MW

31-10-2026 13:00 - 14:00 370 MW

31-10-2026 14:00 - 15:00 370 MW

31-10-2026 15:00 - 16:00 370 MW

31-10-2026 16:00 - 17:00 370 MW

31-10-2026 17:00 - 18:00 370 MW

31-10-2026 18:00 - 19:00 370 MW

31-10-2026 19:00 - 20:00 370 MW

31-10-2026 20:00 - 21:00 370 MW

31-10-2026 21:00 - 22:00 370 MW

31-10-2026 22:00 - 23:00 370 MW

31-10-2026 23:00 - 24:00 370 MW

5. Amount of LTTR remaining after curtailment:

31-10-2026 00:00 - 01:00 0 MW

31-10-2026 01:00 - 02:00 0 MW

31-10-2026 02:00 - 03:00 0 MW

31-10-2026 03:00 - 04:00 0 MW

31-10-2026 04:00 - 05:00 0 MW

31-10-2026 05:00 - 06:00 0 MW

31-10-2026 06:00 - 07:00 0 MW

31-10-2026 07:00 - 08:00 0 MW

31-10-2026 08:00 - 09:00 0 MW

31-10-2026 09:00 - 10:00 0 MW

31-10-2026 10:00 - 11:00 0 MW

31-10-2026 11:00 - 12:00 0 MW

31-10-2026 12:00 - 13:00 0 MW

31-10-2026 13:00 - 14:00 0 MW

31-10-2026 14:00 - 15:00 0 MW

31-10-2026 15:00 - 16:00 0 MW

31-10-2026 16:00 - 17:00 0 MW

31-10-2026 17:00 - 18:00 0 MW

31-10-2026 18:00 - 19:00 0 MW

31-10-2026 19:00 - 20:00 0 MW

31-10-2026 20:00 - 21:00 0 MW

31-10-2026 21:00 - 22:00 0 MW

31-10-2026 22:00 - 23:00 0 MW

31-10-2026 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*:

31/10/2026

      00:00-01:00 Network Security

      01:00-02:00 Network Security

      02:00-03:00 Network Security

      03:00-04:00 Network Security

      04:00-05:00 Network Security

      05:00-06:00 Network Security

      06:00-07:00 Network Security

      07:00-08:00 Network Security

      08:00-09:00 Network Security

      09:00-10:00 Network Security

      10:00-11:00 Network Security

      11:00-12:00 Network Security

      12:00-13:00 Network Security

      13:00-14:00 Network Security

      14:00-15:00 Network Security

      15:00-16:00 Network Security

      16:00-17:00 Network Security

      17:00-18:00 Network Security

      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

Capacity Curtailment on the IF1-GB-FR border for delivery period 12-11-2026

by JAO

1. TSO(s)*:

RTE-TSO

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:

12-11-2026 00:00 - 01:00 1200 MW

12-11-2026 01:00 - 02:00 1200 MW

12-11-2026 02:00 - 03:00 1200 MW

12-11-2026 03:00 - 04:00 1200 MW

12-11-2026 04:00 - 05:00 1200 MW

12-11-2026 05:00 - 06:00 1200 MW

12-11-2026 06:00 - 07:00 1200 MW

12-11-2026 07:00 - 08:00 1200 MW

12-11-2026 08:00 - 09:00 1200 MW

12-11-2026 09:00 - 10:00 1200 MW

12-11-2026 10:00 - 11:00 1200 MW

12-11-2026 11:00 - 12:00 1200 MW

12-11-2026 12:00 - 13:00 1200 MW

12-11-2026 13:00 - 14:00 1200 MW

12-11-2026 14:00 - 15:00 1200 MW

12-11-2026 15:00 - 16:00 1200 MW

12-11-2026 16:00 - 17:00 1200 MW

12-11-2026 17:00 - 18:00 1200 MW

12-11-2026 18:00 - 19:00 1200 MW

12-11-2026 19:00 - 20:00 1200 MW

12-11-2026 20:00 - 21:00 1200 MW

12-11-2026 21:00 - 22:00 1200 MW

12-11-2026 22:00 - 23:00 1200 MW

12-11-2026 23:00 - 24:00 1200 MW

5. Amount of LTTR remaining after curtailment:

12-11-2026 00:00 - 01:00 468 MW

12-11-2026 01:00 - 02:00 468 MW

12-11-2026 02:00 - 03:00 468 MW

12-11-2026 03:00 - 04:00 468 MW

12-11-2026 04:00 - 05:00 468 MW

12-11-2026 05:00 - 06:00 468 MW

12-11-2026 06:00 - 07:00 468 MW

12-11-2026 07:00 - 08:00 468 MW

12-11-2026 08:00 - 09:00 468 MW

12-11-2026 09:00 - 10:00 468 MW

12-11-2026 10:00 - 11:00 468 MW

12-11-2026 11:00 - 12:00 468 MW

12-11-2026 12:00 - 13:00 468 MW

12-11-2026 13:00 - 14:00 468 MW

12-11-2026 14:00 - 15:00 468 MW

12-11-2026 15:00 - 16:00 468 MW

12-11-2026 16:00 - 17:00 468 MW

12-11-2026 17:00 - 18:00 468 MW

12-11-2026 18:00 - 19:00 468 MW

12-11-2026 19:00 - 20:00 468 MW

12-11-2026 20:00 - 21:00 468 MW

12-11-2026 21:00 - 22:00 468 MW

12-11-2026 22:00 - 23:00 468 MW

12-11-2026 23:00 - 24:00 468 MW

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

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 IF1-FR-GB border for delivery period 12-11-2026

by JAO

1. TSO(s)*:

RTE-TSO

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:

12-11-2026 00:00 - 01:00 1200 MW

12-11-2026 01:00 - 02:00 1200 MW

12-11-2026 02:00 - 03:00 1200 MW

12-11-2026 03:00 - 04:00 1200 MW

12-11-2026 04:00 - 05:00 1200 MW

12-11-2026 05:00 - 06:00 1200 MW

12-11-2026 06:00 - 07:00 1200 MW

12-11-2026 07:00 - 08:00 1200 MW

12-11-2026 08:00 - 09:00 1200 MW

12-11-2026 09:00 - 10:00 1200 MW

12-11-2026 10:00 - 11:00 1200 MW

12-11-2026 11:00 - 12:00 1200 MW

12-11-2026 12:00 - 13:00 1200 MW

12-11-2026 13:00 - 14:00 1200 MW

12-11-2026 14:00 - 15:00 1200 MW

12-11-2026 15:00 - 16:00 1200 MW

12-11-2026 16:00 - 17:00 1200 MW

12-11-2026 17:00 - 18:00 1200 MW

12-11-2026 18:00 - 19:00 1200 MW

12-11-2026 19:00 - 20:00 1200 MW

12-11-2026 20:00 - 21:00 1200 MW

12-11-2026 21:00 - 22:00 1200 MW

12-11-2026 22:00 - 23:00 1200 MW

12-11-2026 23:00 - 24:00 1200 MW

5. Amount of LTTR remaining after curtailment:

12-11-2026 00:00 - 01:00 462 MW

12-11-2026 01:00 - 02:00 462 MW

12-11-2026 02:00 - 03:00 462 MW

12-11-2026 03:00 - 04:00 462 MW

12-11-2026 04:00 - 05:00 462 MW

12-11-2026 05:00 - 06:00 462 MW

12-11-2026 06:00 - 07:00 462 MW

12-11-2026 07:00 - 08:00 462 MW

12-11-2026 08:00 - 09:00 462 MW

12-11-2026 09:00 - 10:00 462 MW

12-11-2026 10:00 - 11:00 462 MW

12-11-2026 11:00 - 12:00 462 MW

12-11-2026 12:00 - 13:00 462 MW

12-11-2026 13:00 - 14:00 462 MW

12-11-2026 14:00 - 15:00 462 MW

12-11-2026 15:00 - 16:00 462 MW

12-11-2026 16:00 - 17:00 462 MW

12-11-2026 17:00 - 18:00 462 MW

12-11-2026 18:00 - 19:00 462 MW

12-11-2026 19:00 - 20:00 462 MW

12-11-2026 20:00 - 21:00 462 MW

12-11-2026 21:00 - 22:00 462 MW

12-11-2026 22:00 - 23:00 462 MW

12-11-2026 23:00 - 24:00 462 MW

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

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

2026 Auction Calendar update

by JAO

We would like to inform you that as per TSOs request, the 2026 Auction Calendar has been updated on the corridors IFA1 and VKL

For more details please refer to the Auction Calendar on our webpage http://www.jao.eu/auctions#/calendar/table to find its latest version.

Capacity Curtailment on the DK-NL border for delivery period 31-10-2026

by JAO

1. TSO(s)*:

TenneT TSO B.V.

2. Identification of affected Long Term Transmission Rights:

DK-NL

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

31-10-2026 07:00 - 08:00 199 MW

31-10-2026 08:00 - 09:00 199 MW

31-10-2026 09:00 - 10:00 199 MW

31-10-2026 10:00 - 11:00 199 MW

31-10-2026 11:00 - 12:00 199 MW

31-10-2026 12:00 - 13:00 199 MW

31-10-2026 13:00 - 14:00 199 MW

31-10-2026 14:00 - 15:00 199 MW

31-10-2026 15:00 - 16:00 199 MW

31-10-2026 16:00 - 17:00 199 MW

5. Amount of LTTR remaining after curtailment:

31-10-2026 07:00 - 08:00 0 MW

31-10-2026 08:00 - 09:00 0 MW

31-10-2026 09:00 - 10:00 0 MW

31-10-2026 10:00 - 11:00 0 MW

31-10-2026 11:00 - 12:00 0 MW

31-10-2026 12:00 - 13:00 0 MW

31-10-2026 13:00 - 14:00 0 MW

31-10-2026 14:00 - 15:00 0 MW

31-10-2026 15:00 - 16:00 0 MW

31-10-2026 16:00 - 17:00 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)*?

The remedial actions considered were assessed as not sufficient or ineffective to avoid the expected violation of operational security limit(s).

Capacity Curtailment on the NLL-BE-GB border for delivery period 31-10-2026

by JAO

1. TSO(s)*:

Nemo Link Limited

2. Identification of affected Long Term Transmission Rights:

NLL-BE-GB

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

31-10-2026 00:00 - 01:00 725 MW

31-10-2026 01:00 - 02:00 725 MW

31-10-2026 02:00 - 03:00 725 MW

31-10-2026 03:00 - 04:00 725 MW

31-10-2026 04:00 - 05:00 725 MW

31-10-2026 05:00 - 06:00 725 MW

31-10-2026 06:00 - 07:00 725 MW

31-10-2026 07:00 - 08:00 725 MW

31-10-2026 08:00 - 09:00 725 MW

31-10-2026 09:00 - 10:00 725 MW

31-10-2026 10:00 - 11:00 725 MW

31-10-2026 11:00 - 12:00 725 MW

31-10-2026 12:00 - 13:00 725 MW

5. Amount of LTTR remaining after curtailment:

31-10-2026 00:00 - 01:00 0 MW

31-10-2026 01:00 - 02:00 0 MW

31-10-2026 02:00 - 03:00 0 MW

31-10-2026 03:00 - 04:00 0 MW

31-10-2026 04:00 - 05:00 0 MW

31-10-2026 05:00 - 06:00 0 MW

31-10-2026 06:00 - 07:00 0 MW

31-10-2026 07:00 - 08:00 0 MW

31-10-2026 08:00 - 09:00 0 MW

31-10-2026 09:00 - 10:00 0 MW

31-10-2026 10:00 - 11:00 0 MW

31-10-2026 11:00 - 12:00 0 MW

31-10-2026 12:00 - 13:00 0 MW

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

This concerns a planned maintenance intervention on the Nemo Link installations

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

This concerns a planned maintenance intervention on the Nemo Link installations

*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 NLL-GB-BE border for delivery period 31-10-2026

by JAO

1. TSO(s)*:

Nemo Link Limited

2. Identification of affected Long Term Transmission Rights:

NLL-GB-BE

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

31-10-2026 00:00 - 01:00 724 MW

31-10-2026 01:00 - 02:00 724 MW

31-10-2026 02:00 - 03:00 724 MW

31-10-2026 03:00 - 04:00 724 MW

31-10-2026 04:00 - 05:00 724 MW

31-10-2026 05:00 - 06:00 724 MW

31-10-2026 06:00 - 07:00 724 MW

31-10-2026 07:00 - 08:00 724 MW

31-10-2026 08:00 - 09:00 724 MW

31-10-2026 09:00 - 10:00 724 MW

31-10-2026 10:00 - 11:00 724 MW

31-10-2026 11:00 - 12:00 724 MW

31-10-2026 12:00 - 13:00 724 MW

5. Amount of LTTR remaining after curtailment:

31-10-2026 00:00 - 01:00 0 MW

31-10-2026 01:00 - 02:00 0 MW

31-10-2026 02:00 - 03:00 0 MW

31-10-2026 03:00 - 04:00 0 MW

31-10-2026 04:00 - 05:00 0 MW

31-10-2026 05:00 - 06:00 0 MW

31-10-2026 06:00 - 07:00 0 MW

31-10-2026 07:00 - 08:00 0 MW

31-10-2026 08:00 - 09:00 0 MW

31-10-2026 09:00 - 10:00 0 MW

31-10-2026 10:00 - 11:00 0 MW

31-10-2026 11:00 - 12:00 0 MW

31-10-2026 12:00 - 13:00 0 MW

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

This concerns a planned maintenance intervention on the Nemo Link installations

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

This concerns a planned maintenance intervention on the Nemo Link installations

*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. 

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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