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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 IF1-FR-GB border for delivery period 17-08-2026

by JAO

1. TSO(s)*:

National Grid Interconnectors Limited (NGIC) and RTE EDF Transport S.A. (RTE)

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:

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

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

17-08-2026 09:00 - 10:00 1900 MW

17-08-2026 10:00 - 11:00 1900 MW

17-08-2026 11:00 - 12:00 1900 MW

17-08-2026 12:00 - 13:00 1900 MW

17-08-2026 13:00 - 14:00 1900 MW

17-08-2026 14:00 - 15:00 1900 MW

17-08-2026 15:00 - 16:00 1900 MW

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

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

17-08-2026 18:00 - 19:00 1900 MW

17-08-2026 19:00 - 20:00 1900 MW

17-08-2026 20:00 - 21:00 1900 MW

17-08-2026 21:00 - 22:00 1900 MW

17-08-2026 22:00 - 23:00 1900 MW

17-08-2026 23:00 - 24:00 1900 MW

5. Amount of LTTR remaining after curtailment:

17-08-2026 07:00 - 08:00 967 MW

17-08-2026 08:00 - 09:00 967 MW

17-08-2026 09:00 - 10:00 967 MW

17-08-2026 10:00 - 11:00 967 MW

17-08-2026 11:00 - 12:00 967 MW

17-08-2026 12:00 - 13:00 967 MW

17-08-2026 13:00 - 14:00 967 MW

17-08-2026 14:00 - 15:00 967 MW

17-08-2026 15:00 - 16:00 967 MW

17-08-2026 16:00 - 17:00 967 MW

17-08-2026 17:00 - 18:00 967 MW

17-08-2026 18:00 - 19:00 967 MW

17-08-2026 19:00 - 20:00 967 MW

17-08-2026 20:00 - 21:00 967 MW

17-08-2026 21:00 - 22:00 967 MW

17-08-2026 22:00 - 23:00 967 MW

17-08-2026 23:00 - 24:00 967 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 17-08-2026

by JAO

1. TSO(s)*:

National Grid Interconnectors Limited (NGIC) and RTE EDF Transport S.A. (RTE)

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:

17-08-2026 00:00 - 01:00 1896 MW

17-08-2026 01:00 - 02:00 1896 MW

17-08-2026 02:00 - 03:00 1896 MW

17-08-2026 03:00 - 04:00 1896 MW

17-08-2026 04:00 - 05:00 1896 MW

17-08-2026 05:00 - 06:00 1896 MW

17-08-2026 06:00 - 07:00 1896 MW

17-08-2026 07:00 - 08:00 1896 MW

17-08-2026 08:00 - 09:00 1896 MW

17-08-2026 09:00 - 10:00 1896 MW

17-08-2026 10:00 - 11:00 1896 MW

17-08-2026 11:00 - 12:00 1896 MW

17-08-2026 12:00 - 13:00 1896 MW

17-08-2026 13:00 - 14:00 1896 MW

17-08-2026 14:00 - 15:00 1896 MW

17-08-2026 15:00 - 16:00 1896 MW

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

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

17-08-2026 18:00 - 19:00 1896 MW

17-08-2026 19:00 - 20:00 1896 MW

17-08-2026 20:00 - 21:00 1896 MW

17-08-2026 21:00 - 22:00 1896 MW

17-08-2026 22:00 - 23:00 1896 MW

17-08-2026 23:00 - 24:00 1896 MW

5. Amount of LTTR remaining after curtailment:

17-08-2026 00:00 - 01:00 923 MW

17-08-2026 01:00 - 02:00 923 MW

17-08-2026 02:00 - 03:00 923 MW

17-08-2026 03:00 - 04:00 923 MW

17-08-2026 04:00 - 05:00 923 MW

17-08-2026 05:00 - 06:00 923 MW

17-08-2026 06:00 - 07:00 923 MW

17-08-2026 07:00 - 08:00 946 MW

17-08-2026 08:00 - 09:00 946 MW

17-08-2026 09:00 - 10:00 946 MW

17-08-2026 10:00 - 11:00 946 MW

17-08-2026 11:00 - 12:00 946 MW

17-08-2026 12:00 - 13:00 946 MW

17-08-2026 13:00 - 14:00 946 MW

17-08-2026 14:00 - 15:00 946 MW

17-08-2026 15:00 - 16:00 946 MW

17-08-2026 16:00 - 17:00 946 MW

17-08-2026 17:00 - 18:00 946 MW

17-08-2026 18:00 - 19:00 946 MW

17-08-2026 19:00 - 20:00 946 MW

17-08-2026 20:00 - 21:00 946 MW

17-08-2026 21:00 - 22:00 946 MW

17-08-2026 22:00 - 23:00 946 MW

17-08-2026 23:00 - 24:00 946 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 16-08-2026

by JAO

1. TSO(s)*:

National Grid Interconnectors Limited (NGIC) and RTE EDF Transport S.A. (RTE)

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:

16-08-2026 00:00 - 01:00 1896 MW

16-08-2026 01:00 - 02:00 1896 MW

16-08-2026 02:00 - 03:00 1896 MW

16-08-2026 03:00 - 04:00 1896 MW

16-08-2026 04:00 - 05:00 1896 MW

16-08-2026 05:00 - 06:00 1896 MW

16-08-2026 06:00 - 07:00 1896 MW

16-08-2026 07:00 - 08:00 1896 MW

16-08-2026 08:00 - 09:00 1896 MW

16-08-2026 09:00 - 10:00 1896 MW

16-08-2026 10:00 - 11:00 1896 MW

16-08-2026 11:00 - 12:00 1896 MW

16-08-2026 12:00 - 13:00 1896 MW

16-08-2026 13:00 - 14:00 1896 MW

16-08-2026 14:00 - 15:00 1896 MW

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

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

16-08-2026 17:00 - 18:00 1896 MW

16-08-2026 18:00 - 19:00 1896 MW

16-08-2026 19:00 - 20:00 1896 MW

16-08-2026 20:00 - 21:00 1896 MW

16-08-2026 21:00 - 22:00 1896 MW

16-08-2026 22:00 - 23:00 1896 MW

16-08-2026 23:00 - 24:00 1896 MW

5. Amount of LTTR remaining after curtailment:

16-08-2026 00:00 - 01:00 923 MW

16-08-2026 01:00 - 02:00 923 MW

16-08-2026 02:00 - 03:00 923 MW

16-08-2026 03:00 - 04:00 923 MW

16-08-2026 04:00 - 05:00 923 MW

16-08-2026 05:00 - 06:00 923 MW

16-08-2026 06:00 - 07:00 923 MW

16-08-2026 07:00 - 08:00 923 MW

16-08-2026 08:00 - 09:00 923 MW

16-08-2026 09:00 - 10:00 923 MW

16-08-2026 10:00 - 11:00 923 MW

16-08-2026 11:00 - 12:00 923 MW

16-08-2026 12:00 - 13:00 923 MW

16-08-2026 13:00 - 14:00 923 MW

16-08-2026 14:00 - 15:00 923 MW

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

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

16-08-2026 17:00 - 18:00 923 MW

16-08-2026 18:00 - 19:00 923 MW

16-08-2026 19:00 - 20:00 923 MW

16-08-2026 20:00 - 21:00 923 MW

16-08-2026 21:00 - 22:00 923 MW

16-08-2026 22:00 - 23:00 923 MW

16-08-2026 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 IF1-GB-FR border for delivery period 15-08-2026

by JAO

1. TSO(s)*:

National Grid Interconnectors Limited (NGIC) and RTE EDF Transport S.A. (RTE)

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:

15-08-2026 00:00 - 01:00 1896 MW

15-08-2026 01:00 - 02:00 1896 MW

15-08-2026 02:00 - 03:00 1896 MW

15-08-2026 03:00 - 04:00 1896 MW

15-08-2026 04:00 - 05:00 1896 MW

15-08-2026 05:00 - 06:00 1896 MW

15-08-2026 06:00 - 07:00 1896 MW

15-08-2026 07:00 - 08:00 1896 MW

15-08-2026 08:00 - 09:00 1896 MW

15-08-2026 09:00 - 10:00 1896 MW

15-08-2026 10:00 - 11:00 1896 MW

15-08-2026 11:00 - 12:00 1896 MW

15-08-2026 12:00 - 13:00 1896 MW

15-08-2026 13:00 - 14:00 1896 MW

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

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

15-08-2026 16:00 - 17:00 1896 MW

15-08-2026 17:00 - 18:00 1896 MW

15-08-2026 18:00 - 19:00 1896 MW

15-08-2026 19:00 - 20:00 1896 MW

15-08-2026 20:00 - 21:00 1896 MW

15-08-2026 21:00 - 22:00 1896 MW

15-08-2026 22:00 - 23:00 1896 MW

15-08-2026 23:00 - 24:00 1896 MW

5. Amount of LTTR remaining after curtailment:

15-08-2026 00:00 - 01:00 923 MW

15-08-2026 01:00 - 02:00 923 MW

15-08-2026 02:00 - 03:00 923 MW

15-08-2026 03:00 - 04:00 923 MW

15-08-2026 04:00 - 05:00 923 MW

15-08-2026 05:00 - 06:00 923 MW

15-08-2026 06:00 - 07:00 923 MW

15-08-2026 07:00 - 08:00 923 MW

15-08-2026 08:00 - 09:00 923 MW

15-08-2026 09:00 - 10:00 923 MW

15-08-2026 10:00 - 11:00 923 MW

15-08-2026 11:00 - 12:00 923 MW

15-08-2026 12:00 - 13:00 923 MW

15-08-2026 13:00 - 14:00 923 MW

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

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

15-08-2026 16:00 - 17:00 923 MW

15-08-2026 17:00 - 18:00 923 MW

15-08-2026 18:00 - 19:00 923 MW

15-08-2026 19:00 - 20:00 923 MW

15-08-2026 20:00 - 21:00 923 MW

15-08-2026 21:00 - 22:00 923 MW

15-08-2026 22:00 - 23:00 923 MW

15-08-2026 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-CH border for delivery period 15-08-2026

by JAO

1. TSO(s)*:

RTE, SWISSGRID

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:

15-08-2026 00:00 - 01:00 370 MW

15-08-2026 01:00 - 02:00 370 MW

15-08-2026 02:00 - 03:00 370 MW

15-08-2026 03:00 - 04:00 370 MW

15-08-2026 04:00 - 05:00 370 MW

15-08-2026 05:00 - 06:00 370 MW

15-08-2026 06:00 - 07:00 370 MW

15-08-2026 07:00 - 08:00 370 MW

15-08-2026 08:00 - 09:00 370 MW

15-08-2026 09:00 - 10:00 370 MW

15-08-2026 10:00 - 11:00 370 MW

15-08-2026 11:00 - 12:00 370 MW

15-08-2026 12:00 - 13:00 370 MW

15-08-2026 13:00 - 14:00 370 MW

15-08-2026 14:00 - 15:00 370 MW

15-08-2026 15:00 - 16:00 370 MW

15-08-2026 16:00 - 17:00 370 MW

15-08-2026 17:00 - 18:00 370 MW

15-08-2026 18:00 - 19:00 370 MW

15-08-2026 19:00 - 20:00 370 MW

15-08-2026 20:00 - 21:00 370 MW

15-08-2026 21:00 - 22:00 370 MW

15-08-2026 22:00 - 23:00 370 MW

15-08-2026 23:00 - 24:00 370 MW

5. Amount of LTTR remaining after curtailment:

15-08-2026 00:00 - 01:00 0 MW

15-08-2026 01:00 - 02:00 0 MW

15-08-2026 02:00 - 03:00 0 MW

15-08-2026 03:00 - 04:00 0 MW

15-08-2026 04:00 - 05:00 0 MW

15-08-2026 05:00 - 06:00 0 MW

15-08-2026 06:00 - 07:00 0 MW

15-08-2026 07:00 - 08:00 0 MW

15-08-2026 08:00 - 09:00 0 MW

15-08-2026 09:00 - 10:00 0 MW

15-08-2026 10:00 - 11:00 0 MW

15-08-2026 11:00 - 12:00 0 MW

15-08-2026 12:00 - 13:00 0 MW

15-08-2026 13:00 - 14:00 0 MW

15-08-2026 14:00 - 15:00 0 MW

15-08-2026 15:00 - 16:00 0 MW

15-08-2026 16:00 - 17:00 0 MW

15-08-2026 17:00 - 18:00 0 MW

15-08-2026 18:00 - 19:00 0 MW

15-08-2026 19:00 - 20:00 0 MW

15-08-2026 20:00 - 21:00 0 MW

15-08-2026 21:00 - 22:00 0 MW

15-08-2026 22:00 - 23:00 0 MW

15-08-2026 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*:

15/08/2026

      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

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

Approved North Sea Link Access Rules

by JAO

Further to our previous communication regarding the North Sea Link long-term auctions, we are pleased to inform you that the NSL Access Rules and Charging Methodology, including the NSL Long Term Allocation Rules, have now been approved by the relevant National Regulatory Authority and published in the relevant section of our website.

The rules are effective as of their publication date, 13 August 2026, and shall apply to Capacity Allocation for Long Term Transmission Rights for delivery periods from October 2026 onwards.

As previously communicated, the first monthly auctions for the North Sea Link Interconnector are scheduled to open on 17 September 2026.

Should you have any questions, please do not hesitate to contact us!

Planned Maintenance – Inside Information Platform

by JAO

Dear all,

Please be informed that planned maintenance of the JAO Inside Information Platform (IIP) has been scheduled.

Maintenance window:

Thursday 13 August 2026 - 11:30 to 11:45 (UTC)

Expected impact:

The JAO Remit IIP Platform will be unavailable during the deployment.

Expected service restoration:

Thursday 13 August 2026 – 11: 45 (UTC)

We apologize for any inconvenience and appreciate your understanding.

Kind regards,

JAO Operations

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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Frequently asked questions

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

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