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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 FR-CH border for delivery period 15-11-2026

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:

15-11-2026 00:00 - 01:00 370 MW

15-11-2026 01:00 - 02:00 370 MW

15-11-2026 02:00 - 03:00 370 MW

15-11-2026 03:00 - 04:00 370 MW

15-11-2026 04:00 - 05:00 370 MW

15-11-2026 05:00 - 06:00 370 MW

15-11-2026 06:00 - 07:00 370 MW

15-11-2026 07:00 - 08:00 370 MW

15-11-2026 08:00 - 09:00 370 MW

15-11-2026 09:00 - 10:00 370 MW

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

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

15-11-2026 12:00 - 13:00 370 MW

15-11-2026 13:00 - 14:00 370 MW

15-11-2026 14:00 - 15:00 370 MW

15-11-2026 15:00 - 16:00 370 MW

15-11-2026 16:00 - 17:00 370 MW

15-11-2026 17:00 - 18:00 370 MW

15-11-2026 18:00 - 19:00 370 MW

15-11-2026 19:00 - 20:00 370 MW

15-11-2026 20:00 - 21:00 370 MW

15-11-2026 21:00 - 22:00 370 MW

15-11-2026 22:00 - 23:00 370 MW

15-11-2026 23:00 - 24:00 370 MW

5. Amount of LTTR remaining after curtailment:

15-11-2026 00:00 - 01:00 0 MW

15-11-2026 01:00 - 02:00 0 MW

15-11-2026 02:00 - 03:00 0 MW

15-11-2026 03:00 - 04:00 0 MW

15-11-2026 04:00 - 05:00 0 MW

15-11-2026 05:00 - 06:00 0 MW

15-11-2026 06:00 - 07:00 0 MW

15-11-2026 07:00 - 08:00 0 MW

15-11-2026 08:00 - 09:00 0 MW

15-11-2026 09:00 - 10:00 0 MW

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

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

15-11-2026 12:00 - 13:00 0 MW

15-11-2026 13:00 - 14:00 0 MW

15-11-2026 14:00 - 15:00 0 MW

15-11-2026 15:00 - 16:00 0 MW

15-11-2026 16:00 - 17:00 0 MW

15-11-2026 17:00 - 18:00 0 MW

15-11-2026 18:00 - 19:00 0 MW

15-11-2026 19:00 - 20:00 0 MW

15-11-2026 20:00 - 21:00 0 MW

15-11-2026 21:00 - 22:00 0 MW

15-11-2026 22:00 - 23:00 0 MW

15-11-2026 23:00 - 24:00 0 MW

Check the latest update on LTCC LTFBA

by JAO

Check the latest update on LTCC LTFBA go-live here:

http://www.jao.eu/news-1

2027 Auction Calendar update

by JAO

We would like to inform you that as per TSOs request, the 2027 Auction Calendar has been updated on the corridor IF1and IF2

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

SDAC_JAO_01: SDAC market coupling 13/11 - Session complete

by JAO

Please be informed that the day-ahead market coupling session is now completed.

[SDAC_ExC_02b]: Delay in Final Market Coupling Results publication

by JAO

The SDAC Market Coupling process is delayed due to technical reasons or market issues.

Therefore, the publication of the final Market Coupling Results is delayed.

We advise you to update your shadow bids at JAO eCAT platform before 14:10.

Further information can be found in the Fallback Manual that is published on the following websites:

NEMO Committee

Planned Maintenance on LTFBA platform | 13/11/26

by JAO

JAO would like to inform you that a planned maintenance activity will take place on the LTFBA platform on 13/11/26 between 20:00 to 21:30 CET.

As part of this maintenance window, JAO will perform a controlled validation exercise in the LTFBA production environment to verify the readiness of the solution and its supporting processes ahead of commercial go live.

Please be aware that the following services and/or connectivity may be disrupted in this time: eCAT, Website, PuTo, Webservices and emails.

The objective of this exercise is to validate end-to-end operational readiness in a controlled manner before commercial go live. 

Please take note of the following important information:

  • No action is required from Market Participants.
  • Market Participants will not be able to access or participate in any LTFBA auction activity during the maintenance window.
  • Any activities performed during this period are internal JAO test and validation activities only and do not constitute live market operations.
  • No auction results, allocations, capacity rights, settlements, financial obligations or other rights or obligations will be generated as a result of the exercise, and any test activities performed during this period will have no legal or commercial effect.

Following completion of the validation activities, the platform will be made available again to Market Participants.

Should you have any questions, please contact the JAO Support Hub.

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-D1-GB

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

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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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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If you can't find an answer to your question, our team is here to help!