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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

Capacity Curtailment on the IT-CH border for delivery period 19-01-2026

by JAO

1. TSO(s)*:

TERNA, SWISSGRID

2. Identification of affected Long Term Transmission Rights:

IT-CH

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

19-01-2026 14:00 - 15:00 927 MW

19-01-2026 15:00 - 16:00 927 MW

19-01-2026 16:00 - 17:00 927 MW

19-01-2026 17:00 - 18:00 927 MW

19-01-2026 18:00 - 19:00 927 MW

19-01-2026 19:00 - 20:00 927 MW

5. Amount of LTTR remaining after curtailment:

19-01-2026 14:00 - 15:00 812 MW

19-01-2026 15:00 - 16:00 196 MW

19-01-2026 16:00 - 17:00 196 MW

19-01-2026 17:00 - 18:00 196 MW

19-01-2026 18:00 - 19:00 196 MW

19-01-2026 19:00 - 20:00 797 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

Capacity Curtailment on the IT-SI border for delivery period 19-01-2026

by JAO

1. TSO(s)*:

TERNA, ELES

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:

19-01-2026 14:00 - 15:00 334 MW

19-01-2026 15:00 - 16:00 334 MW

19-01-2026 16:00 - 17:00 334 MW

19-01-2026 17:00 - 18:00 334 MW

19-01-2026 18:00 - 19:00 334 MW

19-01-2026 19:00 - 20:00 334 MW

5. Amount of LTTR remaining after curtailment:

19-01-2026 14:00 - 15:00 284 MW

19-01-2026 15:00 - 16:00 63 MW

19-01-2026 16:00 - 17:00 63 MW

19-01-2026 17:00 - 18:00 63 MW

19-01-2026 18:00 - 19:00 63 MW

19-01-2026 19:00 - 20:00 307 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

Capacity Curtailment on the FR-IT border for delivery period 19-01-2026

by JAO

1. TSO(s)*:

TERNA, RTE

2. Identification of affected Long Term Transmission Rights:

FR-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

19-01-2026 09:00 - 10:00 2600 MW

19-01-2026 10:00 - 11:00 2600 MW

19-01-2026 11:00 - 12:00 2600 MW

19-01-2026 21:00 - 22:00 2600 MW

19-01-2026 22:00 - 23:00 2600 MW

19-01-2026 23:00 - 24:00 2600 MW

5. Amount of LTTR remaining after curtailment:

19-01-2026 09:00 - 10:00 2458 MW

19-01-2026 10:00 - 11:00 2458 MW

19-01-2026 11:00 - 12:00 2458 MW

19-01-2026 21:00 - 22:00 2441 MW

19-01-2026 22:00 - 23:00 2441 MW

19-01-2026 23:00 - 24:00 2286 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

Capacity Curtailment on the IT-FR border for delivery period 19-01-2026

by JAO

1. TSO(s)*:

TERNA, RTE

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:

19-01-2026 13:00 - 14:00 1495 MW

19-01-2026 14:00 - 15:00 1495 MW

19-01-2026 15:00 - 16:00 1495 MW

19-01-2026 16:00 - 17:00 1495 MW

19-01-2026 17:00 - 18:00 1495 MW

19-01-2026 18:00 - 19:00 1495 MW

19-01-2026 19:00 - 20:00 1495 MW

19-01-2026 20:00 - 21:00 1495 MW

5. Amount of LTTR remaining after curtailment:

19-01-2026 13:00 - 14:00 1400 MW

19-01-2026 14:00 - 15:00 788 MW

19-01-2026 15:00 - 16:00 176 MW

19-01-2026 16:00 - 17:00 176 MW

19-01-2026 17:00 - 18:00 176 MW

19-01-2026 18:00 - 19:00 176 MW

19-01-2026 19:00 - 20:00 775 MW

19-01-2026 20:00 - 21:00 1374 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

Capacity Curtailment on the IT-AT border for delivery period 19-01-2026

by JAO

1. TSO(s)*:

TERNA, APG

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:

19-01-2026 14:00 - 15:00 81 MW

19-01-2026 15:00 - 16:00 81 MW

19-01-2026 16:00 - 17:00 81 MW

19-01-2026 17:00 - 18:00 81 MW

19-01-2026 18:00 - 19:00 81 MW

19-01-2026 19:00 - 20:00 81 MW

5. Amount of LTTR remaining after curtailment:

19-01-2026 14:00 - 15:00 49 MW

19-01-2026 15:00 - 16:00 5 MW

19-01-2026 16:00 - 17:00 5 MW

19-01-2026 17:00 - 18:00 5 MW

19-01-2026 18:00 - 19:00 5 MW

19-01-2026 19:00 - 20:00 44 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

2026 Auction Calendar update

by JAO

We would like to inform you that as per TSOs request, the 2026 Auction Calendar has been updated on the corridor AT-HU and IF2-FR<>GB

For more details please refer to the Auction Calendar on our webpage http://www.jao.eu/auctions#/calendar/table to find its latest version.

Urgent Market Update: 2nd round created for AT-HU-M-BASE-------260201-02 for Market Period 01//02/2026-01/03/2026 opening on 19/01/2026 at 14:00

by JAO

Please note that the 2nd round of the long term auction for the corridor AT-HU with auction ID  AT-HU-M-BASE-------260201-02 is opening on 19/01/2026 at 14:00 and will close on 21/01/2026 at 14:00

Please note that the Default Bids will not be taken into consideration, thank your understanding.

Kind regards,

JAO Operations

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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