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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.

 

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

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Capacity Curtailment on the SI-AT border for delivery period 23-04-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

SI-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

23-04-2026 11:00 - 12:00 370 MW

23-04-2026 12:00 - 13:00 370 MW

23-04-2026 13:00 - 14:00 370 MW

5. Amount of LTTR remaining after curtailment:

23-04-2026 11:00 - 12:00 124 MW

23-04-2026 12:00 - 13:00 124 MW

23-04-2026 13:00 - 14:00 125 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.

Capacity Curtailment on the HU-AT border for delivery period 23-04-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

HU-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

23-04-2026 11:00 - 12:00 295 MW

23-04-2026 12:00 - 13:00 295 MW

23-04-2026 13:00 - 14:00 295 MW

5. Amount of LTTR remaining after curtailment:

23-04-2026 11:00 - 12:00 211 MW

23-04-2026 12:00 - 13:00 177 MW

23-04-2026 13:00 - 14:00 142 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.

Capacity Curtailment on the AT-CZ border for delivery period 23-04-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

AT-CZ

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

23-04-2026 11:00 - 12:00 350 MW

23-04-2026 12:00 - 13:00 350 MW

23-04-2026 13:00 - 14:00 350 MW

5. Amount of LTTR remaining after curtailment:

23-04-2026 11:00 - 12:00 208 MW

23-04-2026 12:00 - 13:00 224 MW

23-04-2026 13:00 - 14:00 252 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.

Capacity Curtailment on the AT-DE border for delivery period 23-04-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

AT-DE

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

23-04-2026 11:00 - 12:00 3620 MW

23-04-2026 12:00 - 13:00 3620 MW

23-04-2026 13:00 - 14:00 3620 MW

5. Amount of LTTR remaining after curtailment:

23-04-2026 11:00 - 12:00 2205 MW

23-04-2026 12:00 - 13:00 2368 MW

23-04-2026 13:00 - 14:00 2762 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.

Publication Tool data for Core ID CCR IDA2 Business Day 22/04

by JAO

Please be informed that due to IDA2 cancellation/decoupling for delivery date 22/04, the missing data of IDA2 publication for the business day 22/04 will not be available in Publication Tool Core ID CCR.


Jao Operations

Capacity Curtailment on the ME-IT border for delivery period 23-04-2026

by JAO

1. TSO(s)*:

CGES

2. Identification of affected Long Term Transmission Rights:

ME-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

23-04-2026 09:00 - 10:00 400 MW

23-04-2026 10:00 - 11:00 400 MW

23-04-2026 11:00 - 12:00 400 MW

23-04-2026 12:00 - 13:00 400 MW

23-04-2026 13:00 - 14:00 400 MW

23-04-2026 14:00 - 15:00 400 MW

23-04-2026 15:00 - 16:00 400 MW

23-04-2026 16:00 - 17:00 400 MW

23-04-2026 17:00 - 18:00 400 MW

5. Amount of LTTR remaining after curtailment:

23-04-2026 09:00 - 10:00 0 MW

23-04-2026 10:00 - 11:00 0 MW

23-04-2026 11:00 - 12:00 0 MW

23-04-2026 12:00 - 13:00 0 MW

23-04-2026 13:00 - 14:00 0 MW

23-04-2026 14:00 - 15:00 0 MW

23-04-2026 15:00 - 16:00 0 MW

23-04-2026 16:00 - 17:00 0 MW

23-04-2026 17:00 - 18:00 0 MW

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

HVDC Monita

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 ES-FR border for delivery period 22-04-2026

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:

22-04-2026 00:00 - 01:00 150 MW

22-04-2026 01:00 - 02:00 150 MW

22-04-2026 02:00 - 03:00 150 MW

22-04-2026 03:00 - 04:00 150 MW

22-04-2026 04:00 - 05:00 150 MW

22-04-2026 05:00 - 06:00 150 MW

22-04-2026 06:00 - 07:00 150 MW

22-04-2026 07:00 - 08:00 150 MW

22-04-2026 08:00 - 09:00 150 MW

22-04-2026 09:00 - 10:00 150 MW

22-04-2026 10:00 - 11:00 150 MW

22-04-2026 11:00 - 12:00 150 MW

22-04-2026 12:00 - 13:00 150 MW

22-04-2026 13:00 - 14:00 150 MW

22-04-2026 14:00 - 15:00 150 MW

22-04-2026 15:00 - 16:00 150 MW

22-04-2026 16:00 - 17:00 150 MW

22-04-2026 17:00 - 18:00 150 MW

22-04-2026 18:00 - 19:00 150 MW

22-04-2026 19:00 - 20:00 150 MW

22-04-2026 20:00 - 21:00 150 MW

22-04-2026 21:00 - 22:00 150 MW

22-04-2026 22:00 - 23:00 150 MW

22-04-2026 23:00 - 24:00 150 MW

5. Amount of LTTR remaining after curtailment:

22-04-2026 00:00 - 01:00 0 MW

22-04-2026 01:00 - 02:00 0 MW

22-04-2026 02:00 - 03:00 0 MW

22-04-2026 03:00 - 04:00 0 MW

22-04-2026 04:00 - 05:00 0 MW

22-04-2026 05:00 - 06:00 0 MW

22-04-2026 06:00 - 07:00 0 MW

22-04-2026 07:00 - 08:00 0 MW

22-04-2026 08:00 - 09:00 0 MW

22-04-2026 09:00 - 10:00 0 MW

22-04-2026 10:00 - 11:00 0 MW

22-04-2026 11:00 - 12:00 0 MW

22-04-2026 12:00 - 13:00 0 MW

22-04-2026 13:00 - 14:00 0 MW

22-04-2026 14:00 - 15:00 0 MW

22-04-2026 15:00 - 16:00 0 MW

22-04-2026 16:00 - 17:00 0 MW

22-04-2026 17:00 - 18:00 0 MW

22-04-2026 18:00 - 19:00 0 MW

22-04-2026 19:00 - 20:00 0 MW

22-04-2026 20:00 - 21:00 0 MW

22-04-2026 21:00 - 22:00 0 MW

22-04-2026 22:00 - 23:00 0 MW

22-04-2026 23:00 - 24:00 0 MW

6. Information on exact operational limit(s) that are expected to be violated in the absence of curtailment :
   22/04/2026
      00:00-01:00 FLEAC - BRIOUX
      01:00-02:00 FLEAC - BRIOUX
      02:00-03:00 FLEAC - BRIOUX
      03:00-04:00 FLEAC - BRIOUX
      04:00-05:00 FLEAC - BRIOUX
      05:00-06:00 FLEAC - BRIOUX
      06:00-07:00 FLEAC - BRIOUX
      07:00-08:00 FLEAC - BRIOUX
      08:00-09:00 FLEAC - BRIOUX
      09:00-10:00 FLEAC - BRIOUX
      10:00-11:00 FLEAC - BRIOUX
      11:00-12:00 FLEAC - BRIOUX
      12:00-13:00 FLEAC - BRIOUX
      13:00-14:00 FLEAC - BRIOUX
      14:00-15:00 FLEAC - BRIOUX
      15:00-16:00 FLEAC - BRIOUX
      16:00-17:00 FLEAC - BRIOUX
      17:00-18:00 FLEAC - BRIOUX
      18:00-19:00 FLEAC - BRIOUX
      19:00-20:00 FLEAC - BRIOUX
      20:00-21:00 FLEAC - BRIOUX
      21:00-22:00 FLEAC - BRIOUX
      22:00-23:00 FLEAC - BRIOUX
      23:00-24:00 FLEAC - BRIOUX
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

Resource Center

This section contains key information for market participants such as user guides, forms, auction rules, nomination deadlines and other documents.

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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.

Get to know us

Register your company

We created a user guide to support the onboarding of market participants. Learn more about the steps to register, the required documents and our service desk platform.

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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!

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