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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 DE-AT border for delivery period 10-11-2025

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:

10-11-2025 00:00 - 01:00 4820 MW

10-11-2025 01:00 - 02:00 4820 MW

10-11-2025 02:00 - 03:00 4820 MW

10-11-2025 03:00 - 04:00 4820 MW

10-11-2025 04:00 - 05:00 4820 MW

10-11-2025 05:00 - 06:00 4820 MW

10-11-2025 06:00 - 07:00 4820 MW

10-11-2025 07:00 - 08:00 4820 MW

10-11-2025 08:00 - 09:00 4820 MW

10-11-2025 09:00 - 10:00 4820 MW

10-11-2025 10:00 - 11:00 4820 MW

10-11-2025 11:00 - 12:00 4820 MW

10-11-2025 12:00 - 13:00 4820 MW

10-11-2025 13:00 - 14:00 4820 MW

10-11-2025 14:00 - 15:00 4820 MW

10-11-2025 15:00 - 16:00 4820 MW

10-11-2025 16:00 - 17:00 4820 MW

10-11-2025 17:00 - 18:00 4820 MW

10-11-2025 18:00 - 19:00 4820 MW

10-11-2025 19:00 - 20:00 4820 MW

10-11-2025 20:00 - 21:00 4820 MW

10-11-2025 21:00 - 22:00 4820 MW

10-11-2025 22:00 - 23:00 4820 MW

10-11-2025 23:00 - 24:00 4820 MW

5. Amount of LTTR remaining after curtailment:

10-11-2025 00:00 - 01:00 4513 MW

10-11-2025 01:00 - 02:00 4513 MW

10-11-2025 02:00 - 03:00 4513 MW

10-11-2025 03:00 - 04:00 4513 MW

10-11-2025 04:00 - 05:00 4513 MW

10-11-2025 05:00 - 06:00 4513 MW

10-11-2025 06:00 - 07:00 4513 MW

10-11-2025 07:00 - 08:00 4513 MW

10-11-2025 08:00 - 09:00 4513 MW

10-11-2025 09:00 - 10:00 4513 MW

10-11-2025 10:00 - 11:00 4513 MW

10-11-2025 11:00 - 12:00 4513 MW

10-11-2025 12:00 - 13:00 4513 MW

10-11-2025 13:00 - 14:00 4513 MW

10-11-2025 14:00 - 15:00 4513 MW

10-11-2025 15:00 - 16:00 4513 MW

10-11-2025 16:00 - 17:00 4513 MW

10-11-2025 17:00 - 18:00 4513 MW

10-11-2025 18:00 - 19:00 4513 MW

10-11-2025 19:00 - 20:00 4513 MW

10-11-2025 20:00 - 21:00 4513 MW

10-11-2025 21:00 - 22:00 4513 MW

10-11-2025 22:00 - 23:00 4513 MW

10-11-2025 23:00 - 24:00 4513 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.

*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 NL-DK border for delivery period 10-11-2025

by JAO

1. TSO(s)*:

TenneT_NL

2. Identification of affected Long Term Transmission Rights:

NL-DK

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

10-11-2025 07:00 - 08:00 300 MW

10-11-2025 08:00 - 09:00 300 MW

10-11-2025 09:00 - 10:00 300 MW

10-11-2025 10:00 - 11:00 300 MW

10-11-2025 11:00 - 12:00 300 MW

10-11-2025 12:00 - 13:00 300 MW

10-11-2025 13:00 - 14:00 300 MW

10-11-2025 14:00 - 15:00 300 MW

5. Amount of LTTR remaining after curtailment:

10-11-2025 07:00 - 08:00 0 MW

10-11-2025 08:00 - 09:00 0 MW

10-11-2025 09:00 - 10:00 0 MW

10-11-2025 10:00 - 11:00 0 MW

10-11-2025 11:00 - 12:00 0 MW

10-11-2025 12:00 - 13:00 0 MW

10-11-2025 13:00 - 14:00 0 MW

10-11-2025 14:00 - 15:00 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)*?

The remedial actions considered were assessed as not sufficient or ineffective to avoid the expected violation of operational security limit(s).

Capacity Curtailment on the DK-NL border for delivery period 10-11-2025

by JAO

1. TSO(s)*:

TenneT_NL

2. Identification of affected Long Term Transmission Rights:

DK-NL

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

10-11-2025 07:00 - 08:00 300 MW

10-11-2025 08:00 - 09:00 300 MW

10-11-2025 09:00 - 10:00 300 MW

10-11-2025 10:00 - 11:00 300 MW

10-11-2025 11:00 - 12:00 300 MW

10-11-2025 12:00 - 13:00 300 MW

10-11-2025 13:00 - 14:00 300 MW

10-11-2025 14:00 - 15:00 300 MW

10-11-2025 15:00 - 16:00 300 MW

10-11-2025 16:00 - 17:00 300 MW

5. Amount of LTTR remaining after curtailment:

10-11-2025 07:00 - 08:00 0 MW

10-11-2025 08:00 - 09:00 0 MW

10-11-2025 09:00 - 10:00 0 MW

10-11-2025 10:00 - 11:00 0 MW

10-11-2025 11:00 - 12:00 0 MW

10-11-2025 12:00 - 13:00 0 MW

10-11-2025 13:00 - 14:00 0 MW

10-11-2025 14:00 - 15:00 0 MW

10-11-2025 15:00 - 16:00 0 MW

10-11-2025 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)*?

The remedial actions considered were assessed as not sufficient or ineffective to avoid the expected violation of operational security limit(s).

Capacity Curtailment on the DE-AT border for delivery period 09-11-2025

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:

09-11-2025 00:00 - 01:00 4820 MW

09-11-2025 01:00 - 02:00 4820 MW

09-11-2025 02:00 - 03:00 4820 MW

09-11-2025 03:00 - 04:00 4820 MW

09-11-2025 04:00 - 05:00 4820 MW

09-11-2025 05:00 - 06:00 4820 MW

09-11-2025 06:00 - 07:00 4820 MW

09-11-2025 07:00 - 08:00 4820 MW

09-11-2025 08:00 - 09:00 4820 MW

09-11-2025 09:00 - 10:00 4820 MW

09-11-2025 10:00 - 11:00 4820 MW

09-11-2025 11:00 - 12:00 4820 MW

09-11-2025 12:00 - 13:00 4820 MW

09-11-2025 13:00 - 14:00 4820 MW

09-11-2025 14:00 - 15:00 4820 MW

09-11-2025 15:00 - 16:00 4820 MW

09-11-2025 16:00 - 17:00 4820 MW

09-11-2025 17:00 - 18:00 4820 MW

09-11-2025 18:00 - 19:00 4820 MW

09-11-2025 19:00 - 20:00 4820 MW

09-11-2025 20:00 - 21:00 4820 MW

09-11-2025 21:00 - 22:00 4820 MW

09-11-2025 22:00 - 23:00 4820 MW

09-11-2025 23:00 - 24:00 4820 MW

5. Amount of LTTR remaining after curtailment:

09-11-2025 00:00 - 01:00 4513 MW

09-11-2025 01:00 - 02:00 4513 MW

09-11-2025 02:00 - 03:00 4513 MW

09-11-2025 03:00 - 04:00 4513 MW

09-11-2025 04:00 - 05:00 4513 MW

09-11-2025 05:00 - 06:00 4513 MW

09-11-2025 06:00 - 07:00 4513 MW

09-11-2025 07:00 - 08:00 4513 MW

09-11-2025 08:00 - 09:00 4513 MW

09-11-2025 09:00 - 10:00 4513 MW

09-11-2025 10:00 - 11:00 4513 MW

09-11-2025 11:00 - 12:00 4513 MW

09-11-2025 12:00 - 13:00 4513 MW

09-11-2025 13:00 - 14:00 4513 MW

09-11-2025 14:00 - 15:00 4513 MW

09-11-2025 15:00 - 16:00 4513 MW

09-11-2025 16:00 - 17:00 4513 MW

09-11-2025 17:00 - 18:00 4513 MW

09-11-2025 18:00 - 19:00 4513 MW

09-11-2025 19:00 - 20:00 4513 MW

09-11-2025 20:00 - 21:00 4513 MW

09-11-2025 21:00 - 22:00 4513 MW

09-11-2025 22:00 - 23:00 4513 MW

09-11-2025 23:00 - 24:00 4513 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.

2026 Auction Calendar

by JAO

Dear Market Participants,

We are happy to share with you first version of the 2026 Auction Calendar for Yearly, Seasonal, Quarterly and Monthly Auctions.

For more details, please find 2026 Auction Calendar attached here and, on our webpage (http://www.jao.eu/auctions#/calendar/table) in the bottom right corner under “Legacy Version XLS”.

Please note that we are still in the auction creation process, therefore some will be visible only in the upcoming weeks.

Best regards,

JAO Operations Team

Capacity Curtailment on the EE-LV border for delivery period 08-11-2025

by JAO

1. TSO(s)*:

ELERING

2. Identification of affected Long Term Transmission Rights:

EE-LV

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

08-11-2025 06:00 - 07:00 550 MW

08-11-2025 09:00 - 10:00 550 MW

08-11-2025 10:00 - 11:00 550 MW

08-11-2025 11:00 - 12:00 550 MW

08-11-2025 12:00 - 13:00 550 MW

08-11-2025 13:00 - 14:00 550 MW

08-11-2025 14:00 - 15:00 550 MW

08-11-2025 15:00 - 16:00 550 MW

08-11-2025 16:00 - 17:00 550 MW

08-11-2025 17:00 - 18:00 550 MW

08-11-2025 18:00 - 19:00 550 MW

08-11-2025 19:00 - 20:00 550 MW

5. Amount of LTTR remaining after curtailment:

08-11-2025 06:00 - 07:00 505 MW

08-11-2025 09:00 - 10:00 511 MW

08-11-2025 10:00 - 11:00 511 MW

08-11-2025 11:00 - 12:00 505 MW

08-11-2025 12:00 - 13:00 505 MW

08-11-2025 13:00 - 14:00 505 MW

08-11-2025 14:00 - 15:00 505 MW

08-11-2025 15:00 - 16:00 505 MW

08-11-2025 16:00 - 17:00 505 MW

08-11-2025 17:00 - 18:00 505 MW

08-11-2025 18:00 - 19:00 505 MW

08-11-2025 19:00 - 20:00 505 MW

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

https://umm.nordpoolgroup.com/#/messages?publicationDate=all&eventDate=custom&connections=EE-LV&eventDateStart=1970-01-01&eventDateStop=2125-04-20 , as well as the capacity already allocated on the Baltic Balancing Market for balancing capacity sharing at https://baltic.transparency-dashboard.eu/node/108

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

There is no alternative to the curtailment of the affected LTTRs.

Capacity Curtailment on the AT-IT border for delivery period 08-11-2025

by JAO

1. TSO(s)*:

TERNA

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:

08-11-2025 03:00 - 04:00 314 MW

08-11-2025 04:00 - 05:00 314 MW

08-11-2025 05:00 - 06:00 314 MW

08-11-2025 06:00 - 07:00 314 MW

5. Amount of LTTR remaining after curtailment:

08-11-2025 03:00 - 04:00 281 MW

08-11-2025 04:00 - 05:00 281 MW

08-11-2025 05:00 - 06:00 281 MW

08-11-2025 06:00 - 07:00 281 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

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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