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Annual Report

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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 IF1-GB-FR border for delivery period 14-10-2026

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:

14-10-2026 00:00 - 01:00 1299 MW

14-10-2026 01:00 - 02:00 1299 MW

14-10-2026 02:00 - 03:00 1299 MW

14-10-2026 03:00 - 04:00 1299 MW

14-10-2026 04:00 - 05:00 1299 MW

14-10-2026 05:00 - 06:00 1299 MW

14-10-2026 06:00 - 07:00 1299 MW

14-10-2026 07:00 - 08:00 1299 MW

14-10-2026 08:00 - 09:00 1299 MW

14-10-2026 09:00 - 10:00 1299 MW

14-10-2026 10:00 - 11:00 1299 MW

14-10-2026 11:00 - 12:00 1299 MW

14-10-2026 12:00 - 13:00 1299 MW

14-10-2026 13:00 - 14:00 1299 MW

14-10-2026 14:00 - 15:00 1299 MW

14-10-2026 15:00 - 16:00 1299 MW

14-10-2026 16:00 - 17:00 1299 MW

14-10-2026 17:00 - 18:00 1299 MW

14-10-2026 18:00 - 19:00 1299 MW

14-10-2026 19:00 - 20:00 1299 MW

14-10-2026 20:00 - 21:00 1299 MW

14-10-2026 21:00 - 22:00 1299 MW

14-10-2026 22:00 - 23:00 1299 MW

14-10-2026 23:00 - 24:00 1299 MW

5. Amount of LTTR remaining after curtailment:

14-10-2026 00:00 - 01:00 957 MW

14-10-2026 01:00 - 02:00 957 MW

14-10-2026 02:00 - 03:00 957 MW

14-10-2026 03:00 - 04:00 957 MW

14-10-2026 04:00 - 05:00 957 MW

14-10-2026 05:00 - 06:00 957 MW

14-10-2026 06:00 - 07:00 957 MW

14-10-2026 07:00 - 08:00 957 MW

14-10-2026 08:00 - 09:00 957 MW

14-10-2026 09:00 - 10:00 957 MW

14-10-2026 10:00 - 11:00 957 MW

14-10-2026 11:00 - 12:00 957 MW

14-10-2026 12:00 - 13:00 957 MW

14-10-2026 13:00 - 14:00 957 MW

14-10-2026 14:00 - 15:00 957 MW

14-10-2026 15:00 - 16:00 957 MW

14-10-2026 16:00 - 17:00 957 MW

14-10-2026 17:00 - 18:00 957 MW

14-10-2026 18:00 - 19:00 957 MW

14-10-2026 19:00 - 20:00 957 MW

14-10-2026 20:00 - 21:00 957 MW

14-10-2026 21:00 - 22:00 957 MW

14-10-2026 22:00 - 23:00 957 MW

14-10-2026 23:00 - 24:00 957 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

SDAC_JAO_01: SDAC market coupling 30/09 - 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 Market Coupling process is delayed due to technical reasons or market issues.

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

Further information can be found in the Fallback Manual that is published on the websites of NEMO Committee and ENTSO-E.


             

Therefore, if relevant, we advise you to update your shadow bids at JAO eCAT platform before 14:10.

[SDAC_ExC_02a]: Delay in Preliminary Market Coupling Results publication

by JAO

Please be aware that the publication of the preliminary SDAC Market Coupling Results is delayed until further notice.

The Market Coupling Results will be published as soon as they are available.

If needed, another delay message will be sent out.

Further information can be found in the Fallback Manual that is published on the websites of NEMO Committee and ENTSO-E.

Therefore, if relevant, we advise you to update your shadow bids at JAO eCAT platform before 14:10.

Capacity Curtailment on the DE-AT border for delivery period 01-10-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

DE-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

01-10-2026 17:00 - 18:00 4820 MW

01-10-2026 18:00 - 19:00 4820 MW

5. Amount of LTTR remaining after curtailment:

01-10-2026 17:00 - 18:00 4254 MW

01-10-2026 18:00 - 19:00 4657 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 01-10-2026

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:

01-10-2026 09:00 - 10:00 4419 MW

01-10-2026 10:00 - 11:00 4419 MW

01-10-2026 11:00 - 12:00 4419 MW

01-10-2026 12:00 - 13:00 4419 MW

01-10-2026 13:00 - 14:00 4419 MW

01-10-2026 14:00 - 15:00 4419 MW

5. Amount of LTTR remaining after curtailment:

01-10-2026 09:00 - 10:00 1077 MW

01-10-2026 10:00 - 11:00 1076 MW

01-10-2026 11:00 - 12:00 1385 MW

01-10-2026 12:00 - 13:00 1326 MW

01-10-2026 13:00 - 14:00 1318 MW

01-10-2026 14:00 - 15:00 1364 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 SI-AT border for delivery period 01-10-2026

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:

01-10-2026 09:00 - 10:00 400 MW

01-10-2026 10:00 - 11:00 400 MW

01-10-2026 11:00 - 12:00 400 MW

01-10-2026 12:00 - 13:00 400 MW

01-10-2026 13:00 - 14:00 400 MW

01-10-2026 14:00 - 15:00 400 MW

5. Amount of LTTR remaining after curtailment:

01-10-2026 09:00 - 10:00 192 MW

01-10-2026 10:00 - 11:00 196 MW

01-10-2026 11:00 - 12:00 232 MW

01-10-2026 12:00 - 13:00 177 MW

01-10-2026 13:00 - 14:00 178 MW

01-10-2026 14:00 - 15:00 212 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.

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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JAO workers

Frequently asked questions

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

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Do you need support?

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

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