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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

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 corridor EL1 -GB-FR direction only .

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 IF1-GB-FR border for delivery period 22-10-2026

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:

22-10-2026 00:00 - 01:00 1299 MW

22-10-2026 01:00 - 02:00 1299 MW

22-10-2026 02:00 - 03:00 1299 MW

22-10-2026 03:00 - 04:00 1299 MW

22-10-2026 04:00 - 05:00 1299 MW

22-10-2026 05:00 - 06:00 1299 MW

22-10-2026 06:00 - 07:00 1299 MW

22-10-2026 07:00 - 08:00 1299 MW

22-10-2026 08:00 - 09:00 1299 MW

22-10-2026 09:00 - 10:00 1299 MW

22-10-2026 10:00 - 11:00 1299 MW

22-10-2026 11:00 - 12:00 1299 MW

22-10-2026 12:00 - 13:00 1299 MW

22-10-2026 13:00 - 14:00 1299 MW

22-10-2026 14:00 - 15:00 1299 MW

22-10-2026 15:00 - 16:00 1299 MW

22-10-2026 16:00 - 17:00 1299 MW

22-10-2026 17:00 - 18:00 1299 MW

22-10-2026 18:00 - 19:00 1299 MW

22-10-2026 19:00 - 20:00 1299 MW

22-10-2026 20:00 - 21:00 1299 MW

22-10-2026 21:00 - 22:00 1299 MW

22-10-2026 22:00 - 23:00 1299 MW

22-10-2026 23:00 - 24:00 1299 MW

5. Amount of LTTR remaining after curtailment:

22-10-2026 00:00 - 01:00 904 MW

22-10-2026 01:00 - 02:00 904 MW

22-10-2026 02:00 - 03:00 904 MW

22-10-2026 03:00 - 04:00 904 MW

22-10-2026 04:00 - 05:00 904 MW

22-10-2026 05:00 - 06:00 904 MW

22-10-2026 06:00 - 07:00 904 MW

22-10-2026 07:00 - 08:00 904 MW

22-10-2026 08:00 - 09:00 904 MW

22-10-2026 09:00 - 10:00 904 MW

22-10-2026 10:00 - 11:00 904 MW

22-10-2026 11:00 - 12:00 904 MW

22-10-2026 12:00 - 13:00 904 MW

22-10-2026 13:00 - 14:00 904 MW

22-10-2026 14:00 - 15:00 904 MW

22-10-2026 15:00 - 16:00 904 MW

22-10-2026 16:00 - 17:00 904 MW

22-10-2026 17:00 - 18:00 904 MW

22-10-2026 18:00 - 19:00 904 MW

22-10-2026 19:00 - 20:00 904 MW

22-10-2026 20:00 - 21:00 904 MW

22-10-2026 21:00 - 22:00 904 MW

22-10-2026 22:00 - 23:00 904 MW

22-10-2026 23:00 - 24:00 904 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

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 corridor IF1-GB<>FR.

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

Delay in the publication of Publication Tool data

by JAO

Please be informed that there is a delay in the publication of data on PUTO due to technical reasons.

The root cause has been identified, and we are currently working to resolve the issue and publish the relevant data as soon as possible.

We will keep you informed of any further updates.

We apologize for any inconvenience this may cause and appreciate your understanding.

Capacity Curtailment on the FR-ES border for delivery period 09-10-2026

by JAO

1. TSO(s)*:

RTE-TSO

2. Identification of affected Long Term Transmission Rights:

FR-ES

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

09-10-2026 00:00 - 01:00 1899 MW

09-10-2026 01:00 - 02:00 1899 MW

09-10-2026 02:00 - 03:00 1899 MW

09-10-2026 03:00 - 04:00 1899 MW

09-10-2026 04:00 - 05:00 1899 MW

09-10-2026 05:00 - 06:00 1899 MW

09-10-2026 06:00 - 07:00 1899 MW

09-10-2026 07:00 - 08:00 1899 MW

09-10-2026 08:00 - 09:00 1899 MW

09-10-2026 09:00 - 10:00 1899 MW

09-10-2026 10:00 - 11:00 1899 MW

5. Amount of LTTR remaining after curtailment:

09-10-2026 00:00 - 01:00 460 MW

09-10-2026 01:00 - 02:00 460 MW

09-10-2026 02:00 - 03:00 460 MW

09-10-2026 03:00 - 04:00 460 MW

09-10-2026 04:00 - 05:00 511 MW

09-10-2026 05:00 - 06:00 511 MW

09-10-2026 06:00 - 07:00 1614 MW

09-10-2026 07:00 - 08:00 1614 MW

09-10-2026 08:00 - 09:00 1614 MW

09-10-2026 09:00 - 10:00 1614 MW

09-10-2026 10:00 - 11:00 1614 MW

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

   09/10/2026

      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

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 DE-AT border for delivery period 09-10-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

DE-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

09-10-2026 11:00 - 12:00 4820 MW

09-10-2026 12:00 - 13:00 4820 MW

09-10-2026 13:00 - 14:00 4820 MW

09-10-2026 14:00 - 15:00 4820 MW

09-10-2026 18:00 - 19:00 4820 MW

5. Amount of LTTR remaining after curtailment:

09-10-2026 11:00 - 12:00 4254 MW

09-10-2026 12:00 - 13:00 4083 MW

09-10-2026 13:00 - 14:00 4251 MW

09-10-2026 14:00 - 15:00 4574 MW

09-10-2026 18:00 - 19:00 4390 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 FR-CH border for delivery period 09-10-2026

by JAO

1. TSO(s)*:

RTE, SWISSGRID

2. Identification of affected Long Term Transmission Rights:

FR-CH

3. Triggering event:

Curtailment due to Curtailment to ensure operation remains within Operational Security Limits

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

09-10-2026 00:00 - 01:00 370 MW

09-10-2026 01:00 - 02:00 370 MW

09-10-2026 02:00 - 03:00 370 MW

09-10-2026 03:00 - 04:00 370 MW

09-10-2026 04:00 - 05:00 370 MW

09-10-2026 05:00 - 06:00 370 MW

09-10-2026 06:00 - 07:00 370 MW

09-10-2026 07:00 - 08:00 370 MW

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

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

09-10-2026 10:00 - 11:00 370 MW

09-10-2026 11:00 - 12:00 370 MW

09-10-2026 12:00 - 13:00 370 MW

09-10-2026 13:00 - 14:00 370 MW

09-10-2026 14:00 - 15:00 370 MW

09-10-2026 15:00 - 16:00 370 MW

09-10-2026 16:00 - 17:00 370 MW

09-10-2026 17:00 - 18:00 370 MW

09-10-2026 18:00 - 19:00 370 MW

09-10-2026 19:00 - 20:00 370 MW

09-10-2026 20:00 - 21:00 370 MW

09-10-2026 21:00 - 22:00 370 MW

09-10-2026 22:00 - 23:00 370 MW

09-10-2026 23:00 - 24:00 370 MW

5. Amount of LTTR remaining after curtailment:

09-10-2026 00:00 - 01:00 0 MW

09-10-2026 01:00 - 02:00 0 MW

09-10-2026 02:00 - 03:00 0 MW

09-10-2026 03:00 - 04:00 0 MW

09-10-2026 04:00 - 05:00 0 MW

09-10-2026 05:00 - 06:00 0 MW

09-10-2026 06:00 - 07:00 0 MW

09-10-2026 07:00 - 08:00 0 MW

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

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

09-10-2026 10:00 - 11:00 0 MW

09-10-2026 11:00 - 12:00 0 MW

09-10-2026 12:00 - 13:00 0 MW

09-10-2026 13:00 - 14:00 0 MW

09-10-2026 14:00 - 15:00 0 MW

09-10-2026 15:00 - 16:00 0 MW

09-10-2026 16:00 - 17:00 0 MW

09-10-2026 17:00 - 18:00 0 MW

09-10-2026 18:00 - 19:00 0 MW

09-10-2026 19:00 - 20:00 0 MW

09-10-2026 20:00 - 21:00 0 MW

09-10-2026 21:00 - 22:00 0 MW

09-10-2026 22:00 - 23:00 0 MW

09-10-2026 23:00 - 24:00 0 MW

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

   09/10/2026

      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

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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Frequently asked questions

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

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