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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 CH-IT border for delivery period 28-01-2026

by JAO

1. TSO(s)*:

SWISSGRID

2. Identification of affected Long Term Transmission Rights:

CH-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

28-01-2026 12:00 - 13:00 2786 MW

28-01-2026 13:00 - 14:00 2786 MW

28-01-2026 14:00 - 15:00 2786 MW

5. Amount of LTTR remaining after curtailment:

28-01-2026 12:00 - 13:00 2588 MW

28-01-2026 13:00 - 14:00 2588 MW

28-01-2026 14:00 - 15:00 2588 MW

Capacity Curtailment on the FR-IT border for delivery period 28-01-2026

by JAO

1. TSO(s)*:

TERNA

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:

28-01-2026 12:00 - 13:00 2600 MW

28-01-2026 13:00 - 14:00 2600 MW

28-01-2026 14:00 - 15:00 2600 MW

5. Amount of LTTR remaining after curtailment:

28-01-2026 12:00 - 13:00 2527 MW

28-01-2026 13:00 - 14:00 2527 MW

28-01-2026 14:00 - 15:00 2527 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 AT-IT border for delivery period 28-01-2026

by JAO

1. TSO(s)*:

TERNA-APG

2. Identification of affected Long Term Transmission Rights:

AT-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

28-01-2026 07:00 - 08:00 224 MW

28-01-2026 08:00 - 09:00 224 MW

28-01-2026 18:00 - 19:00 224 MW

28-01-2026 19:00 - 20:00 224 MW

28-01-2026 20:00 - 21:00 224 MW

5. Amount of LTTR remaining after curtailment:

28-01-2026 07:00 - 08:00 133 MW

28-01-2026 08:00 - 09:00 141 MW

28-01-2026 18:00 - 19:00 133 MW

28-01-2026 19:00 - 20:00 133 MW

28-01-2026 20:00 - 21:00 133 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 28-01-2026

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:

28-01-2026 15:00 - 16:00 81 MW

28-01-2026 16:00 - 17:00 81 MW

28-01-2026 17:00 - 18:00 81 MW

5. Amount of LTTR remaining after curtailment:

28-01-2026 15:00 - 16:00 66 MW

28-01-2026 16:00 - 17:00 66 MW

28-01-2026 17:00 - 18:00 66 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

Email System Maintenance – 26/01/2026, 20:00 to 23:00

by JAO

Please be advised that our emailing system will undergo scheduled maintenance today, 26th of January, between 20:00 and 23:00.

If you are unable to reach us via email or experience any issues during this time, please contact us by phone or by submitting a ticket on Service Desk - http://www.jao.eu/service-desk

We do not expect significant issues, but there is a small chance of delays if messages or files are sent exactly during the maintenance window.

In case the auction-related documents ( Results and Rights documents)  do not reach you on time during this time window, kindly download them directly from the Trader UI.

We appreciate your understanding and cooperation.

Best regards,

JAO Operations

Capacity Curtailment on the CH-IT border for delivery period 26-01-2026

by JAO

1. TSO(s)*:

SWISSGRID

2. Identification of affected Long Term Transmission Rights:

CH-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

26-01-2026 09:00 - 10:00 2786 MW

26-01-2026 10:00 - 11:00 2786 MW

26-01-2026 11:00 - 12:00 2786 MW

5. Amount of LTTR remaining after curtailment:

26-01-2026 09:00 - 10:00 2504 MW

26-01-2026 10:00 - 11:00 2504 MW

26-01-2026 11:00 - 12:00 2504 MW

Capacity Curtailment on the IT-CH border for delivery period 26-01-2026

by JAO

1. TSO(s)*:

TERNA, RTE, APG. SWG, ELES

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:

26-01-2026 16:00 - 17:00 927 MW

26-01-2026 17:00 - 18:00 927 MW

26-01-2026 18:00 - 19:00 927 MW

26-01-2026 19:00 - 20:00 927 MW

5. Amount of LTTR remaining after curtailment:

26-01-2026 16:00 - 17:00 342 MW

26-01-2026 17:00 - 18:00 342 MW

26-01-2026 18:00 - 19:00 342 MW

26-01-2026 19:00 - 20:00 342 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

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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