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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

PuTo Nordic available

by JAO

Please be informed that PuTo Nordic is available again

Capacity Curtailment on the FR-CH border for delivery period 04-11-2026

by JAO

1. TSO(s)*:

RTE-TSO

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:

04-11-2026 00:00 - 01:00 370 MW

04-11-2026 01:00 - 02:00 370 MW

04-11-2026 02:00 - 03:00 370 MW

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

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

04-11-2026 05:00 - 06:00 370 MW

04-11-2026 06:00 - 07:00 370 MW

04-11-2026 07:00 - 08:00 370 MW

04-11-2026 08:00 - 09:00 370 MW

04-11-2026 09:00 - 10:00 370 MW

04-11-2026 10:00 - 11:00 370 MW

04-11-2026 11:00 - 12:00 370 MW

04-11-2026 12:00 - 13:00 370 MW

04-11-2026 13:00 - 14:00 370 MW

04-11-2026 14:00 - 15:00 370 MW

04-11-2026 15:00 - 16:00 370 MW

04-11-2026 16:00 - 17:00 370 MW

5. Amount of LTTR remaining after curtailment:

04-11-2026 00:00 - 01:00 0 MW

04-11-2026 01:00 - 02:00 0 MW

04-11-2026 02:00 - 03:00 0 MW

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

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

04-11-2026 05:00 - 06:00 0 MW

04-11-2026 06:00 - 07:00 0 MW

04-11-2026 07:00 - 08:00 0 MW

04-11-2026 08:00 - 09:00 0 MW

04-11-2026 09:00 - 10:00 0 MW

04-11-2026 10:00 - 11:00 0 MW

04-11-2026 11:00 - 12:00 0 MW

04-11-2026 12:00 - 13:00 0 MW

04-11-2026 13:00 - 14:00 0 MW

04-11-2026 14:00 - 15:00 0 MW

04-11-2026 15:00 - 16:00 0 MW

04-11-2026 16:00 - 17:00 0 MW

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

   04/11/2026

      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

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

PuTo Nordic Unavailable

by JAO

Please be informed that PuTo Nordic will be unavailable for the next hour.

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 a technical reason for BD 02/11

The relevant data will be published as soon as possible.

We apologise for any inconvenience this may cause and appreciate your understanding

Registration Now Open for the Long-Term and Daily auctions on the Greece – North Macedonia border

by JAO

Dear Market Participants,

We would like to inform you that, in anticipation of the upcoming go-live of the Greece – North Macedonia (GR-MK) border on JAO's platform, the following provisional documents have been published on our website:

* 'Rules for Explicit Daily Capacity Allocation on Bidding Zone border serviced by JAO' for application to the GR-MK border and its 'Border specific annex for Greece-North Macedonia'

* 'Harmonised Allocation Rules 2026' for application to the GR-MK border and its 'Border Specific Annex for the Bidding Zone border Greece-North Macedonia'

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 the National Regulatory Authorities have approved them.

The go-live date of the auctions will be announced at a later time.

Registration for participation in these auctions is now open.

Long-term auctions

No action is required. The GR-MK border will be added by default for all Registered Participants and for all new registrations.

Daily auctions – action required

* Existing Market Participants: If you are already registered with JAO, please download the new version of the Amendment to the Participation Agreement from our website (Documents > Resource Center > Registration > Registration and Modification Forms: https://www.jao.eu/resource-center/registration), select the North Macedonia – Greece border under the Rules for Explicit Daily Capacity Allocation on Bidding Zone border serviced by JAO, and submit the signed Amendment via JAO Support Hub (support.jao.eu) to receive the entitlements for this border.

* New Market Participants: Please select the North Macedonia – Greece border under the Rules for Explicit Daily Capacity Allocation on Bidding Zone border serviced by JAO during your registration via JAO Support Hub (support.jao.eu) to receive the entitlements for this border.

Publication of a new version of the Amendment to the Participation Agreement

by JAO

JAO hereby informs all Registered Participants that a new version of the Amendment to the Participation Agreement has been published.

Registered Participants who wish to amend their Participation Agreement, for example to update their contact details or the Additional Rules and borders for which they are registered, are kindly asked to use the new version.

The new version is available on our website under Documents > Resource Center > Registration > Registration and Modification Forms: https://www.jao.eu/resource-center/registration

Capacity Curtailment on the IF1-FR-GB border for delivery period 15-11-2026

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:

15-11-2026 00:00 - 01:00 1200 MW

15-11-2026 01:00 - 02:00 1200 MW

15-11-2026 02:00 - 03:00 1200 MW

15-11-2026 03:00 - 04:00 1200 MW

15-11-2026 04:00 - 05:00 1200 MW

15-11-2026 05:00 - 06:00 1200 MW

15-11-2026 06:00 - 07:00 1200 MW

15-11-2026 07:00 - 08:00 1200 MW

15-11-2026 08:00 - 09:00 1200 MW

15-11-2026 09:00 - 10:00 1200 MW

15-11-2026 10:00 - 11:00 1200 MW

15-11-2026 11:00 - 12:00 1200 MW

15-11-2026 12:00 - 13:00 1200 MW

15-11-2026 13:00 - 14:00 1200 MW

15-11-2026 14:00 - 15:00 1200 MW

15-11-2026 15:00 - 16:00 1200 MW

15-11-2026 16:00 - 17:00 1200 MW

15-11-2026 17:00 - 18:00 1200 MW

15-11-2026 18:00 - 19:00 1200 MW

15-11-2026 19:00 - 20:00 1200 MW

15-11-2026 20:00 - 21:00 1200 MW

15-11-2026 21:00 - 22:00 1200 MW

15-11-2026 22:00 - 23:00 1200 MW

15-11-2026 23:00 - 24:00 1200 MW

5. Amount of LTTR remaining after curtailment:

15-11-2026 00:00 - 01:00 966 MW

15-11-2026 01:00 - 02:00 966 MW

15-11-2026 02:00 - 03:00 966 MW

15-11-2026 03:00 - 04:00 966 MW

15-11-2026 04:00 - 05:00 966 MW

15-11-2026 05:00 - 06:00 966 MW

15-11-2026 06:00 - 07:00 966 MW

15-11-2026 07:00 - 08:00 966 MW

15-11-2026 08:00 - 09:00 966 MW

15-11-2026 09:00 - 10:00 966 MW

15-11-2026 10:00 - 11:00 966 MW

15-11-2026 11:00 - 12:00 966 MW

15-11-2026 12:00 - 13:00 966 MW

15-11-2026 13:00 - 14:00 966 MW

15-11-2026 14:00 - 15:00 966 MW

15-11-2026 15:00 - 16:00 966 MW

15-11-2026 16:00 - 17:00 966 MW

15-11-2026 17:00 - 18:00 966 MW

15-11-2026 18:00 - 19:00 966 MW

15-11-2026 19:00 - 20:00 966 MW

15-11-2026 20:00 - 21:00 966 MW

15-11-2026 21:00 - 22:00 966 MW

15-11-2026 22:00 - 23:00 966 MW

15-11-2026 23:00 - 24:00 966 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

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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