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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

Registration Opening for the Intraday Auctions on the Ukrainian Borders

by JAO

Following the publication of the "Rules for Intraday Capacity Allocation on Ukrainian borders", available on our website, we would like to inform you that explicit Intraday Auctions will be launched on JAO's allocation platform for the Ukraine-Hungary and Ukraine-Slovakia borders. The go-live date will be communicated in due course.

Registration to participate in these auctions is now open.

If you are already registered with JAO, please amend your Participation Agreement by accepting the "Rules for Intraday Capacity Allocation on Ukrainian borders" in Amendment no. 29 to the Participation Agreement, published on our website.

For new registrations, please accept the "Rules for Intraday Capacity Allocation on Ukrainian borders" during your registration via the JAO Support Hub in order to receive the relevant entitlements.

Please note that entitlements to participate in the Intraday Auctions can be granted only to Market Participants who fulfil the below requirements:


Border

Required Balancing Group Agreement with the TSOs

Ukraine-Hungary

Ukrenergo or MAVIR

Ukraine-Slovakia

Ukrenergo or a valid Framework Agreement on Electricity Transmission through Connecting Lines with SEPS



To submit the completed and signed documents, please use the JAO Support Hub (support.jao.eu).


Ongoing Issue with Resale Integrations

by JAO

As you may be aware, JAO is currently experiencing technical issues affecting the processing of resale notifications submitted by market participants. Therefore, should you wish to place a resale, please do not hesitate to contact us.

We will be happy to submit the resale on your behalf, provided that the request is submitted with sufficient time before the deadline and followed up with a call to +352 27 62 38 38

Capacity Curtailment on the IT-SI border for delivery period 15-07-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-SI

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

15-07-2026 18:00 - 19:00 315 MW

15-07-2026 19:00 - 20:00 315 MW

15-07-2026 20:00 - 21:00 315 MW

15-07-2026 21:00 - 22:00 315 MW

15-07-2026 22:00 - 23:00 315 MW

5. Amount of LTTR remaining after curtailment:

15-07-2026 18:00 - 19:00 258 MW

15-07-2026 19:00 - 20:00 0 MW

15-07-2026 20:00 - 21:00 0 MW

15-07-2026 21:00 - 22:00 0 MW

15-07-2026 22:00 - 23:00 226 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

 

Capacity Curtailment on the IT-FR border for delivery period 15-07-2026

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:

15-07-2026 18:00 - 19:00 1370 MW

15-07-2026 19:00 - 20:00 1370 MW

15-07-2026 20:00 - 21:00 1370 MW

15-07-2026 21:00 - 22:00 1370 MW

15-07-2026 22:00 - 23:00 1370 MW

5. Amount of LTTR remaining after curtailment:

15-07-2026 18:00 - 19:00 650 MW

15-07-2026 19:00 - 20:00 0 MW

15-07-2026 20:00 - 21:00 0 MW

15-07-2026 21:00 - 22:00 0 MW

15-07-2026 22:00 - 23:00 694 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

 

Capacity Curtailment on the IT-AT border for delivery period 15-07-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

15-07-2026 18:00 - 19:00 73 MW

15-07-2026 19:00 - 20:00 73 MW

15-07-2026 20:00 - 21:00 73 MW

15-07-2026 21:00 - 22:00 73 MW

15-07-2026 22:00 - 23:00 73 MW

5. Amount of LTTR remaining after curtailment:

15-07-2026 18:00 - 19:00 34 MW

15-07-2026 19:00 - 20:00 0 MW

15-07-2026 20:00 - 21:00 0 MW

15-07-2026 21:00 - 22:00 0 MW

15-07-2026 22:00 - 23:00 37 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

 

Capacity Curtailment on the IT-CH border for delivery period 15-07-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-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:

15-07-2026 18:00 - 19:00 719 MW

15-07-2026 19:00 - 20:00 719 MW

15-07-2026 20:00 - 21:00 719 MW

15-07-2026 21:00 - 22:00 719 MW

15-07-2026 22:00 - 23:00 719 MW

5. Amount of LTTR remaining after curtailment:

15-07-2026 18:00 - 19:00 591 MW

15-07-2026 19:00 - 20:00 0 MW

15-07-2026 20:00 - 21:00 0 MW

15-07-2026 21:00 - 22:00 0 MW

15-07-2026 22:00 - 23:00 591 MW

Capacity Curtailment on the FR-ES border for delivery period 15-07-2026

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:

15-07-2026 00:00 - 01:00 1599 MW

15-07-2026 01:00 - 02:00 1599 MW

15-07-2026 02:00 - 03:00 1599 MW

15-07-2026 03:00 - 04:00 1599 MW

15-07-2026 04:00 - 05:00 1599 MW

15-07-2026 05:00 - 06:00 1599 MW

15-07-2026 06:00 - 07:00 1599 MW

15-07-2026 07:00 - 08:00 1599 MW

15-07-2026 08:00 - 09:00 1599 MW

15-07-2026 09:00 - 10:00 1599 MW

15-07-2026 20:00 - 21:00 1599 MW

15-07-2026 21:00 - 22:00 1599 MW

15-07-2026 22:00 - 23:00 1599 MW

15-07-2026 23:00 - 24:00 1599 MW

5. Amount of LTTR remaining after curtailment:

15-07-2026 00:00 - 01:00 973 MW

15-07-2026 01:00 - 02:00 973 MW

15-07-2026 02:00 - 03:00 973 MW

15-07-2026 03:00 - 04:00 973 MW

15-07-2026 04:00 - 05:00 973 MW

15-07-2026 05:00 - 06:00 973 MW

15-07-2026 06:00 - 07:00 973 MW

15-07-2026 07:00 - 08:00 973 MW

15-07-2026 08:00 - 09:00 973 MW

15-07-2026 09:00 - 10:00 973 MW

15-07-2026 20:00 - 21:00 973 MW

15-07-2026 21:00 - 22:00 973 MW

15-07-2026 22:00 - 23:00 973 MW

15-07-2026 23:00 - 24:00 973 MW

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

   15/07/2026

      00:00-01:00 BRAUD - CUBNEZAIS 3

      01:00-02:00 BRAUD - CUBNEZAIS 3

      02:00-03:00 BRAUD - CUBNEZAIS 3

      03:00-04:00 BRAUD - CUBNEZAIS 3

      04:00-05:00 BRAUD - CUBNEZAIS 3

      05:00-06:00 BRAUD - CUBNEZAIS 3

      06:00-07:00 BRAUD - CUBNEZAIS 3

      07:00-08:00 BRAUD - CUBNEZAIS 3

      08:00-09:00 BRAUD - CUBNEZAIS 3

      09:00-10:00 BRAUD - CUBNEZAIS 3

      20:00-21:00 BRAUD - CUBNEZAIS 3

      21:00-22:00 BRAUD - CUBNEZAIS 3

      22:00-23:00 BRAUD - CUBNEZAIS 3

      23:00-24:00 BRAUD - CUBNEZAIS 3

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. 

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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