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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 11-04-2026

by JAO

1. TSO(s)*:

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:

11-04-2026 00:00 - 01:00 1738 MW

11-04-2026 01:00 - 02:00 1738 MW

11-04-2026 02:00 - 03:00 1738 MW

11-04-2026 03:00 - 04:00 1738 MW

11-04-2026 04:00 - 05:00 1738 MW

11-04-2026 05:00 - 06:00 1738 MW

11-04-2026 06:00 - 07:00 1738 MW

11-04-2026 07:00 - 08:00 1738 MW

11-04-2026 08:00 - 09:00 1738 MW

11-04-2026 09:00 - 10:00 1738 MW

11-04-2026 10:00 - 11:00 1738 MW

11-04-2026 11:00 - 12:00 1738 MW

11-04-2026 12:00 - 13:00 1738 MW

11-04-2026 13:00 - 14:00 1738 MW

11-04-2026 14:00 - 15:00 1738 MW

11-04-2026 15:00 - 16:00 1738 MW

11-04-2026 16:00 - 17:00 1738 MW

11-04-2026 17:00 - 18:00 1738 MW

11-04-2026 18:00 - 19:00 1738 MW

11-04-2026 19:00 - 20:00 1738 MW

11-04-2026 20:00 - 21:00 1738 MW

11-04-2026 21:00 - 22:00 1738 MW

11-04-2026 22:00 - 23:00 1738 MW

11-04-2026 23:00 - 24:00 1738 MW

5. Amount of LTTR remaining after curtailment:

11-04-2026 00:00 - 01:00 1435 MW

11-04-2026 01:00 - 02:00 1435 MW

11-04-2026 02:00 - 03:00 1435 MW

11-04-2026 03:00 - 04:00 1435 MW

11-04-2026 04:00 - 05:00 1435 MW

11-04-2026 05:00 - 06:00 1435 MW

11-04-2026 06:00 - 07:00 1435 MW

11-04-2026 07:00 - 08:00 1435 MW

11-04-2026 08:00 - 09:00 1435 MW

11-04-2026 09:00 - 10:00 1435 MW

11-04-2026 10:00 - 11:00 1435 MW

11-04-2026 11:00 - 12:00 1435 MW

11-04-2026 12:00 - 13:00 1435 MW

11-04-2026 13:00 - 14:00 1435 MW

11-04-2026 14:00 - 15:00 1435 MW

11-04-2026 15:00 - 16:00 1435 MW

11-04-2026 16:00 - 17:00 1435 MW

11-04-2026 17:00 - 18:00 1435 MW

11-04-2026 18:00 - 19:00 1435 MW

11-04-2026 19:00 - 20:00 1435 MW

11-04-2026 20:00 - 21:00 1435 MW

11-04-2026 21:00 - 22:00 1435 MW

11-04-2026 22:00 - 23:00 1435 MW

11-04-2026 23:00 - 24:00 1435 MW

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

7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s)*?

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

Capacity Curtailment on the IF1-FR-GB border for delivery period 11-04-2026

by JAO

1. TSO(s)*:

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:

11-04-2026 00:00 - 01:00 1750 MW

11-04-2026 01:00 - 02:00 1750 MW

11-04-2026 02:00 - 03:00 1750 MW

11-04-2026 03:00 - 04:00 1750 MW

11-04-2026 04:00 - 05:00 1750 MW

11-04-2026 05:00 - 06:00 1750 MW

11-04-2026 06:00 - 07:00 1750 MW

11-04-2026 07:00 - 08:00 1750 MW

11-04-2026 08:00 - 09:00 1750 MW

11-04-2026 09:00 - 10:00 1750 MW

11-04-2026 10:00 - 11:00 1750 MW

11-04-2026 11:00 - 12:00 1750 MW

11-04-2026 12:00 - 13:00 1750 MW

11-04-2026 13:00 - 14:00 1750 MW

11-04-2026 14:00 - 15:00 1750 MW

11-04-2026 15:00 - 16:00 1750 MW

11-04-2026 16:00 - 17:00 1750 MW

11-04-2026 17:00 - 18:00 1750 MW

11-04-2026 18:00 - 19:00 1750 MW

11-04-2026 19:00 - 20:00 1750 MW

11-04-2026 20:00 - 21:00 1750 MW

11-04-2026 21:00 - 22:00 1750 MW

11-04-2026 22:00 - 23:00 1750 MW

11-04-2026 23:00 - 24:00 1750 MW

5. Amount of LTTR remaining after curtailment:

11-04-2026 00:00 - 01:00 1464 MW

11-04-2026 01:00 - 02:00 1464 MW

11-04-2026 02:00 - 03:00 1464 MW

11-04-2026 03:00 - 04:00 1464 MW

11-04-2026 04:00 - 05:00 1464 MW

11-04-2026 05:00 - 06:00 1464 MW

11-04-2026 06:00 - 07:00 1464 MW

11-04-2026 07:00 - 08:00 1464 MW

11-04-2026 08:00 - 09:00 1464 MW

11-04-2026 09:00 - 10:00 1464 MW

11-04-2026 10:00 - 11:00 1464 MW

11-04-2026 11:00 - 12:00 1464 MW

11-04-2026 12:00 - 13:00 1464 MW

11-04-2026 13:00 - 14:00 1464 MW

11-04-2026 14:00 - 15:00 1464 MW

11-04-2026 15:00 - 16:00 1464 MW

11-04-2026 16:00 - 17:00 1464 MW

11-04-2026 17:00 - 18:00 1464 MW

11-04-2026 18:00 - 19:00 1464 MW

11-04-2026 19:00 - 20:00 1464 MW

11-04-2026 20:00 - 21:00 1464 MW

11-04-2026 21:00 - 22:00 1464 MW

11-04-2026 22:00 - 23:00 1464 MW

11-04-2026 23:00 - 24:00 1464 MW

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

7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s)*?

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

Delay in Publication of Congestion Income for CORE - 29/03/2026

by JAO

The publication of Congestion Income for CORE in Publication Tool for business day 29/03/2026 is currently delayed.

Thanks for your understanding

SDAC_JAO_01: SDAC market coupling 28/03 - Session complete

by JAO

Please be informed that the day-ahead market coupling session is now completed.

[SDAC_ExC_02]: Delay in Market Coupling Results publication

by JAO

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

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

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

If needed, another delay message will be sent out.

Urgent Market Update: Delay of AT<>CH for Market Period 29/03/2026

by JAO

Please note that the CH<>DE Daily Auction for market period 29/03/2026 with the auction ID below has been delayed.

CH-AT-D-DAILYPRODU-260329-01

AT-CH-D-DAILYPRODU-260329-01

Bid submission gate opens at 09:07 CET and closes at 09:30CET

Capacity Curtailment on the GR-IT border for delivery period 29-03-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

GR-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

29-03-2026 09:00 - 10:00 500 MW

29-03-2026 10:00 - 11:00 500 MW

29-03-2026 11:00 - 12:00 500 MW

29-03-2026 12:00 - 13:00 500 MW

29-03-2026 13:00 - 14:00 500 MW

29-03-2026 14:00 - 15:00 500 MW

29-03-2026 15:00 - 16:00 500 MW

29-03-2026 16:00 - 17:00 500 MW

5. Amount of LTTR remaining after curtailment:

29-03-2026 09:00 - 10:00 0 MW

29-03-2026 10:00 - 11:00 0 MW

29-03-2026 11:00 - 12:00 0 MW

29-03-2026 12:00 - 13:00 0 MW

29-03-2026 13:00 - 14:00 0 MW

29-03-2026 14:00 - 15:00 0 MW

29-03-2026 15:00 - 16:00 0 MW

29-03-2026 16:00 - 17:00 0 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

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

Resource Center

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

Go to resources

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

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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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