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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 24-07-2026

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:

24-07-2026 00:00 - 01:00 370 MW

24-07-2026 01:00 - 02:00 370 MW

24-07-2026 02:00 - 03:00 370 MW

24-07-2026 03:00 - 04:00 370 MW

24-07-2026 04:00 - 05:00 370 MW

24-07-2026 05:00 - 06:00 370 MW

24-07-2026 06:00 - 07:00 370 MW

24-07-2026 07:00 - 08:00 370 MW

24-07-2026 08:00 - 09:00 370 MW

24-07-2026 09:00 - 10:00 370 MW

24-07-2026 10:00 - 11:00 370 MW

24-07-2026 11:00 - 12:00 370 MW

24-07-2026 12:00 - 13:00 370 MW

24-07-2026 13:00 - 14:00 370 MW

24-07-2026 14:00 - 15:00 370 MW

24-07-2026 15:00 - 16:00 370 MW

24-07-2026 16:00 - 17:00 370 MW

24-07-2026 17:00 - 18:00 370 MW

24-07-2026 18:00 - 19:00 370 MW

24-07-2026 19:00 - 20:00 370 MW

24-07-2026 20:00 - 21:00 370 MW

24-07-2026 21:00 - 22:00 370 MW

24-07-2026 22:00 - 23:00 370 MW

24-07-2026 23:00 - 24:00 370 MW

5. Amount of LTTR remaining after curtailment:

24-07-2026 00:00 - 01:00 0 MW

24-07-2026 01:00 - 02:00 0 MW

24-07-2026 02:00 - 03:00 0 MW

24-07-2026 03:00 - 04:00 0 MW

24-07-2026 04:00 - 05:00 0 MW

24-07-2026 05:00 - 06:00 0 MW

24-07-2026 06:00 - 07:00 0 MW

24-07-2026 07:00 - 08:00 0 MW

24-07-2026 08:00 - 09:00 0 MW

24-07-2026 09:00 - 10:00 0 MW

24-07-2026 10:00 - 11:00 0 MW

24-07-2026 11:00 - 12:00 0 MW

24-07-2026 12:00 - 13:00 0 MW

24-07-2026 13:00 - 14:00 0 MW

24-07-2026 14:00 - 15:00 0 MW

24-07-2026 15:00 - 16:00 0 MW

24-07-2026 16:00 - 17:00 0 MW

24-07-2026 17:00 - 18:00 0 MW

24-07-2026 18:00 - 19:00 0 MW

24-07-2026 19:00 - 20:00 0 MW

24-07-2026 20:00 - 21:00 0 MW

24-07-2026 21:00 - 22:00 0 MW

24-07-2026 22:00 - 23:00 0 MW

24-07-2026 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*:

24/07/2026

      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

IF2 Auction Cancellation and Additional Round Creation

by JAO

Please be informed that the following auction have been cancelled: 

IF2-FR-GB-M-BASE--260901-03

IF2-GB-FR-M-BASE--260901-03

New auctions for the same horizon will be opened on 24th July 2026 at 11:50, with the Auction ID:

IF2-FR-GB-M-BASE--260901-04

IF2-GB-FR-M-BASE--260901-04

Thank you for your undersatnding

Important Notice: Temporary Resale Submission Procedure

by JAO

As you may be aware, JAO is currently experiencing technical issues affecting the processing of resale notifications submitted by market participants. If you wish to submit a resale request, please contact JAO and we will make reasonable efforts to submit it on your behalf through the applicable fallback procedure.

To ensure sufficient processing time, participants are strongly encouraged to submit their request at least 30 minutes before the Long-Term Resale Gate closure and to follow up with a phone call to +352 27 62 38 38.

Please note that if the fallback procedure cannot be executed or the LTTR return request cannot be registered, any submitted return request shall be automatically cancelled in accordance with the applicable rules.

[TTN] Addition of new COs

by JAO

Dear Market Participants,

This is an announcement that we will be adding two new contingencies to capacity calculation in all timeframes due to the commissioning of a new substation in Tilburg. These will be considere from Bussinessday 2026-07-24 onwards.

NL_CO_00073

N-1 Tilburg-Eindhoven 380 W

NL_CO_00074

N-1 Geertruidenberg-Tilburg 380 W

The following CO will become obsolete:

NL_CO_00014

N-1 Geertruidenberg-Eindhoven 380 W

This change concerns only the white circuit for now. When the black and grey circuits are also finalized, a new message will be published with more changed contingencies.

For more information on the new 380kV substation in Tilburg, please visit the TenneT website at Hoogspanningsstation Tilburg 380 kV | TenneT

We trust to have informed you sufficiently.

Sincerely,
TenneT TSO B.V.

Capacity Curtailment on the IF1-GB-FR border for delivery period 24-07-2026

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:

24-07-2026 00:00 - 01:00 1796 MW

24-07-2026 01:00 - 02:00 1796 MW

24-07-2026 02:00 - 03:00 1796 MW

24-07-2026 03:00 - 04:00 1796 MW

24-07-2026 04:00 - 05:00 1796 MW

24-07-2026 05:00 - 06:00 1796 MW

24-07-2026 06:00 - 07:00 1796 MW

5. Amount of LTTR remaining after curtailment:

24-07-2026 00:00 - 01:00 1447 MW

24-07-2026 01:00 - 02:00 1447 MW

24-07-2026 02:00 - 03:00 1447 MW

24-07-2026 03:00 - 04:00 1447 MW

24-07-2026 04:00 - 05:00 1447 MW

24-07-2026 05:00 - 06:00 1447 MW

24-07-2026 06:00 - 07:00 949 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 unplanned maintenance

Capacity Curtailment on the IF1-FR-GB border for delivery period 24-07-2026

by JAO

1. TSO(s)*:

RNP

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:

24-07-2026 00:00 - 01:00 1800 MW

24-07-2026 01:00 - 02:00 1800 MW

24-07-2026 02:00 - 03:00 1800 MW

24-07-2026 03:00 - 04:00 1800 MW

24-07-2026 04:00 - 05:00 1800 MW

24-07-2026 05:00 - 06:00 1800 MW

24-07-2026 06:00 - 07:00 1800 MW

5. Amount of LTTR remaining after curtailment:

24-07-2026 00:00 - 01:00 1464 MW

24-07-2026 01:00 - 02:00 1464 MW

24-07-2026 02:00 - 03:00 1464 MW

24-07-2026 03:00 - 04:00 1464 MW

24-07-2026 04:00 - 05:00 1464 MW

24-07-2026 05:00 - 06:00 1464 MW

24-07-2026 06:00 - 07:00 961 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 unplanned maintenance

Invitation to Participate in LTFBA second Test Session – August 4th, 5th and 6th, 2026

by JAO

We are pleased to invite you to participate in the upcoming new second round of LTFBA test sessions scheduled as follows:

  • Yearly Auction Test Session (CORE & Nordic Regions): 4th of August
  • Monthly Auction Test Session (CORE & Nordic Regions): 5th of August
  • Auction Cancellation and Second Round for another Monthly Auction: 6th of August

These sessions are intended to provide Market Participants with the opportunity to:

  • Familiarise themselves with the LTFBA auction setup
  • Navigate the platform and explore its functionalities
  • Submit and manage bids within the tool

Please note that these sessions are dedicated to practical testing within our Auction tool's test environment, allowing participants to actively interact with the system and validate their processes.

Registration

Market Participants interested in joining are kindly requested to register by sending an email to helpdesk@jao.eu with the following information:

Company

EIC code

eCAT username(s) (if available)

Email Address

Full Name

Further details, including access information and session timelines, will be shared with registered participants ahead of the test dates.

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

We look forward to your participation.

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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Frequently asked questions

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

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