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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 DE-AT border for delivery period 15-11-2025

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:

15-11-2025 00:00 - 01:00 4820 MW

15-11-2025 01:00 - 02:00 4820 MW

15-11-2025 02:00 - 03:00 4820 MW

15-11-2025 03:00 - 04:00 4820 MW

15-11-2025 04:00 - 05:00 4820 MW

15-11-2025 05:00 - 06:00 4820 MW

15-11-2025 06:00 - 07:00 4820 MW

15-11-2025 07:00 - 08:00 4820 MW

15-11-2025 08:00 - 09:00 4820 MW

15-11-2025 09:00 - 10:00 4820 MW

15-11-2025 10:00 - 11:00 4820 MW

15-11-2025 11:00 - 12:00 4820 MW

15-11-2025 12:00 - 13:00 4820 MW

15-11-2025 13:00 - 14:00 4820 MW

15-11-2025 14:00 - 15:00 4820 MW

15-11-2025 15:00 - 16:00 4820 MW

15-11-2025 16:00 - 17:00 4820 MW

15-11-2025 17:00 - 18:00 4820 MW

15-11-2025 18:00 - 19:00 4820 MW

15-11-2025 19:00 - 20:00 4820 MW

15-11-2025 20:00 - 21:00 4820 MW

15-11-2025 21:00 - 22:00 4820 MW

15-11-2025 22:00 - 23:00 4820 MW

15-11-2025 23:00 - 24:00 4820 MW

5. Amount of LTTR remaining after curtailment:

15-11-2025 00:00 - 01:00 4513 MW

15-11-2025 01:00 - 02:00 4513 MW

15-11-2025 02:00 - 03:00 4513 MW

15-11-2025 03:00 - 04:00 4513 MW

15-11-2025 04:00 - 05:00 4513 MW

15-11-2025 05:00 - 06:00 4513 MW

15-11-2025 06:00 - 07:00 4513 MW

15-11-2025 07:00 - 08:00 4513 MW

15-11-2025 08:00 - 09:00 4513 MW

15-11-2025 09:00 - 10:00 4513 MW

15-11-2025 10:00 - 11:00 4513 MW

15-11-2025 11:00 - 12:00 4513 MW

15-11-2025 12:00 - 13:00 4513 MW

15-11-2025 13:00 - 14:00 4513 MW

15-11-2025 14:00 - 15:00 4513 MW

15-11-2025 15:00 - 16:00 4513 MW

15-11-2025 16:00 - 17:00 4513 MW

15-11-2025 17:00 - 18:00 4513 MW

15-11-2025 18:00 - 19:00 4513 MW

15-11-2025 19:00 - 20:00 4513 MW

15-11-2025 20:00 - 21:00 4513 MW

15-11-2025 21:00 - 22:00 4513 MW

15-11-2025 22:00 - 23:00 4513 MW

15-11-2025 23:00 - 24:00 4513 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

Registration Now Open for auctions on the Adria borders

by JAO

Dear Market Participants,

We would like to inform you that in anticipation of the upcoming go-live of the Adria borders on JAO's platform and after the closure of the relevant public consultations, the following provisional documents have been published on our website:

Please note that these documents are released on behalf of the relevant TSOs for information and are pending approval by the relevant National Regulatory Authorities. The rules will be binding once National Regulatory Authorities will have approved.

As already communicated, the explicit auctions for the above-mentioned borders will be launched on JAO’s allocation platform as follows:

  • Yearly Auction for Market Period 2026 will open on 08.12.2025
  • Monthly Auction for Market Period January 2026 will open on 18.12.2025
  • Day Ahead Auction for Market Period 01.01.2026 will open on 31.12.2025

Registration for participation in these auctions is now open.

Action required regarding day-ahead auctions:

Please note that the market participants who hold a valid Participation Agreement with JAO, the entitlements for long-term auctions will be granted by default. No additional documentation is required for those with a valid agreement.

For both new registrations and amendments to your Participation Agreement, please visit our Service Desk.

Should you have any questions or require further assistance, please do not hesitate to contact us!

Best regards,

JAO Operations Team

Capacity Curtailment on the EE-LV border for delivery period 14-11-2025

by JAO

1. TSO(s)*:

ELERING

2. Identification of affected Long Term Transmission Rights:

EE-LV

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

14-11-2025 00:00 - 01:00 550 MW

14-11-2025 01:00 - 02:00 550 MW

14-11-2025 02:00 - 03:00 550 MW

14-11-2025 04:00 - 05:00 550 MW

14-11-2025 05:00 - 06:00 550 MW

14-11-2025 06:00 - 07:00 550 MW

14-11-2025 10:00 - 11:00 550 MW

14-11-2025 11:00 - 12:00 550 MW

14-11-2025 12:00 - 13:00 550 MW

14-11-2025 13:00 - 14:00 550 MW

14-11-2025 15:00 - 16:00 550 MW

5. Amount of LTTR remaining after curtailment:

14-11-2025 00:00 - 01:00 494 MW

14-11-2025 01:00 - 02:00 494 MW

14-11-2025 02:00 - 03:00 508 MW

14-11-2025 04:00 - 05:00 505 MW

14-11-2025 05:00 - 06:00 494 MW

14-11-2025 06:00 - 07:00 493 MW

14-11-2025 10:00 - 11:00 511 MW

14-11-2025 11:00 - 12:00 505 MW

14-11-2025 12:00 - 13:00 505 MW

14-11-2025 13:00 - 14:00 511 MW

14-11-2025 15:00 - 16:00 510 MW

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

https://umm.nordpoolgroup.com/#/messages?publicationDate=all&eventDate=custom&connections=EE-LV&eventDateStart=1970-01-01&eventDateStop=2125-04-20, as well as the capacity already allocated on the Baltic Balancing Market for balancing capacity sharing athttps://baltic.transparency-dashboard.eu/node/108


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

There is no alternative to the curtailment of the affected LTTRs.

Capacity Curtailment on the ES-FR border for delivery period 14-11-2025

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:

14-11-2025 06:00 - 07:00 2140 MW

14-11-2025 07:00 - 08:00 2140 MW

14-11-2025 08:00 - 09:00 2140 MW

14-11-2025 09:00 - 10:00 2140 MW

14-11-2025 10:00 - 11:00 2140 MW

14-11-2025 18:00 - 19:00 2140 MW

14-11-2025 19:00 - 20:00 2140 MW

14-11-2025 20:00 - 21:00 2140 MW

14-11-2025 21:00 - 22:00 2140 MW

14-11-2025 22:00 - 23:00 2140 MW

14-11-2025 23:00 - 24:00 2140 MW

5. Amount of LTTR remaining after curtailment:

14-11-2025 06:00 - 07:00 2067 MW

14-11-2025 07:00 - 08:00 2067 MW

14-11-2025 08:00 - 09:00 2067 MW

14-11-2025 09:00 - 10:00 2067 MW

14-11-2025 10:00 - 11:00 2067 MW

14-11-2025 18:00 - 19:00 2067 MW

14-11-2025 19:00 - 20:00 2067 MW

14-11-2025 20:00 - 21:00 2067 MW

14-11-2025 21:00 - 22:00 2067 MW

14-11-2025 22:00 - 23:00 2067 MW

14-11-2025 23:00 - 24:00 2067 MW

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

   14/11/2025

      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

      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 IT-FR border for delivery period 14-11-2025

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:

14-11-2025 07:00 - 08:00 1494 MW

14-11-2025 08:00 - 09:00 1494 MW

5. Amount of LTTR remaining after curtailment:

14-11-2025 07:00 - 08:00 1436 MW

14-11-2025 08:00 - 09:00 1436 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

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 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 DE-AT border for delivery period 14-11-2025

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:

14-11-2025 00:00 - 01:00 4820 MW

14-11-2025 01:00 - 02:00 4820 MW

14-11-2025 02:00 - 03:00 4820 MW

14-11-2025 03:00 - 04:00 4820 MW

14-11-2025 04:00 - 05:00 4820 MW

14-11-2025 05:00 - 06:00 4820 MW

14-11-2025 06:00 - 07:00 4820 MW

14-11-2025 07:00 - 08:00 4820 MW

14-11-2025 08:00 - 09:00 4820 MW

14-11-2025 09:00 - 10:00 4820 MW

14-11-2025 10:00 - 11:00 4820 MW

14-11-2025 11:00 - 12:00 4820 MW

14-11-2025 12:00 - 13:00 4820 MW

14-11-2025 13:00 - 14:00 4820 MW

14-11-2025 14:00 - 15:00 4820 MW

14-11-2025 15:00 - 16:00 4820 MW

14-11-2025 16:00 - 17:00 4820 MW

14-11-2025 17:00 - 18:00 4820 MW

14-11-2025 18:00 - 19:00 4820 MW

14-11-2025 19:00 - 20:00 4820 MW

14-11-2025 20:00 - 21:00 4820 MW

14-11-2025 21:00 - 22:00 4820 MW

14-11-2025 22:00 - 23:00 4820 MW

14-11-2025 23:00 - 24:00 4820 MW

5. Amount of LTTR remaining after curtailment:

14-11-2025 00:00 - 01:00 4513 MW

14-11-2025 01:00 - 02:00 4513 MW

14-11-2025 02:00 - 03:00 4513 MW

14-11-2025 03:00 - 04:00 4513 MW

14-11-2025 04:00 - 05:00 4513 MW

14-11-2025 05:00 - 06:00 4513 MW

14-11-2025 06:00 - 07:00 4513 MW

14-11-2025 07:00 - 08:00 4513 MW

14-11-2025 08:00 - 09:00 4513 MW

14-11-2025 09:00 - 10:00 4513 MW

14-11-2025 10:00 - 11:00 4513 MW

14-11-2025 11:00 - 12:00 4513 MW

14-11-2025 12:00 - 13:00 4513 MW

14-11-2025 13:00 - 14:00 4513 MW

14-11-2025 14:00 - 15:00 4513 MW

14-11-2025 15:00 - 16:00 4513 MW

14-11-2025 16:00 - 17:00 4513 MW

14-11-2025 17:00 - 18:00 4513 MW

14-11-2025 18:00 - 19:00 4513 MW

14-11-2025 19:00 - 20:00 4513 MW

14-11-2025 20:00 - 21:00 4513 MW

14-11-2025 21:00 - 22:00 4513 MW

14-11-2025 22:00 - 23:00 4513 MW

14-11-2025 23:00 - 24:00 4513 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

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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