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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.

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  • 500+
    Registered market participants
  • 26k+
    Auctions held annually
  • 100%
    Auction tool availability
  • 80+
    Employees
  • 50
    TSOs serviced

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Update: Go-Live of the Monthly Auctions for the Ukraine-Hungary, Ukraine-Slovakia and Ukraine-Romania borders

by JAO

Dear Market Participants,


We would like to inform you that in anticipation of the upcoming go-live of the monthly auctions for the Ukrainian borders on JAO's platform, the HAR 2024 for EU external borders has been amended with the Border Specific Annexes for the following borders and published on our website:

  • Ukraine-Slovakia: UA <> SK
  • Ukraine-Hungary: UA <> HU
  • Ukraine-Romania: UA <> RO

The HAR 2026 is pending approval by the Ukrainian NRA. Once approved, the current documentation will be amended and published with the relevant notice period.

Monthly auctions for Market Period January 2026 will open on 15.12.2025.


Entitlements for monthly auctions will be granted by default to all Market Participants who are already registered with JAO. No additional documentation is required.


For any inquires please visit our Service Desk.

Should you have any questions or require further assistance, please do not hesitate to contact us!


Best regards,
JAO Operations Team

Capacity Curtailment on the EE-LV border for delivery period 19-11-2025

by JAO

1. TSO(s)*:

AST

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:

19-11-2025 00:00 - 01:00 550 MW

19-11-2025 01:00 - 02:00 550 MW

19-11-2025 02:00 - 03:00 550 MW

19-11-2025 03:00 - 04:00 550 MW

19-11-2025 04:00 - 05:00 550 MW

19-11-2025 05:00 - 06:00 550 MW

19-11-2025 06:00 - 07:00 550 MW

19-11-2025 09:00 - 10:00 550 MW

19-11-2025 12:00 - 13:00 550 MW

19-11-2025 13:00 - 14:00 550 MW

19-11-2025 14:00 - 15:00 550 MW

19-11-2025 15:00 - 16:00 550 MW

19-11-2025 16:00 - 17:00 550 MW

19-11-2025 17:00 - 18:00 550 MW

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

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

19-11-2025 20:00 - 21:00 550 MW

19-11-2025 21:00 - 22:00 550 MW

19-11-2025 22:00 - 23:00 550 MW

19-11-2025 23:00 - 24:00 550 MW

5. Amount of LTTR remaining after curtailment:

19-11-2025 00:00 - 01:00 443 MW

19-11-2025 01:00 - 02:00 443 MW

19-11-2025 02:00 - 03:00 443 MW

19-11-2025 03:00 - 04:00 438 MW

19-11-2025 04:00 - 05:00 442 MW

19-11-2025 05:00 - 06:00 439 MW

19-11-2025 06:00 - 07:00 439 MW

19-11-2025 09:00 - 10:00 464 MW

19-11-2025 12:00 - 13:00 454 MW

19-11-2025 13:00 - 14:00 451 MW

19-11-2025 14:00 - 15:00 451 MW

19-11-2025 15:00 - 16:00 450 MW

19-11-2025 16:00 - 17:00 448 MW

19-11-2025 17:00 - 18:00 450 MW

19-11-2025 18:00 - 19:00 450 MW

19-11-2025 19:00 - 20:00 464 MW

19-11-2025 20:00 - 21:00 464 MW

19-11-2025 21:00 - 22:00 464 MW

19-11-2025 22:00 - 23:00 438 MW

19-11-2025 23:00 - 24:00 443 MW

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

Nord Pool - UMM Platform, as well as the capacity already allocated on the Baltic Balancing Market for balancing capacity sharing athttps://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 IT-AT border for delivery period 19-11-2025

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:

19-11-2025 00:00 - 01:00 106 MW

19-11-2025 01:00 - 02:00 106 MW

19-11-2025 02:00 - 03:00 106 MW

19-11-2025 03:00 - 04:00 106 MW

19-11-2025 04:00 - 05:00 106 MW

19-11-2025 05:00 - 06:00 106 MW

19-11-2025 06:00 - 07:00 106 MW

19-11-2025 07:00 - 08:00 106 MW

19-11-2025 08:00 - 09:00 106 MW

19-11-2025 09:00 - 10:00 106 MW

19-11-2025 10:00 - 11:00 106 MW

19-11-2025 11:00 - 12:00 106 MW

19-11-2025 12:00 - 13:00 106 MW

19-11-2025 13:00 - 14:00 106 MW

19-11-2025 14:00 - 15:00 106 MW

19-11-2025 15:00 - 16:00 106 MW

19-11-2025 16:00 - 17:00 106 MW

19-11-2025 17:00 - 18:00 106 MW

19-11-2025 18:00 - 19:00 106 MW

19-11-2025 19:00 - 20:00 106 MW

19-11-2025 20:00 - 21:00 106 MW

19-11-2025 21:00 - 22:00 106 MW

19-11-2025 22:00 - 23:00 106 MW

19-11-2025 23:00 - 24:00 106 MW

5. Amount of LTTR remaining after curtailment:

19-11-2025 00:00 - 01:00 58 MW

19-11-2025 01:00 - 02:00 58 MW

19-11-2025 02:00 - 03:00 58 MW

19-11-2025 03:00 - 04:00 58 MW

19-11-2025 04:00 - 05:00 58 MW

19-11-2025 05:00 - 06:00 58 MW

19-11-2025 06:00 - 07:00 58 MW

19-11-2025 07:00 - 08:00 58 MW

19-11-2025 08:00 - 09:00 58 MW

19-11-2025 09:00 - 10:00 58 MW

19-11-2025 10:00 - 11:00 58 MW

19-11-2025 11:00 - 12:00 58 MW

19-11-2025 12:00 - 13:00 58 MW

19-11-2025 13:00 - 14:00 58 MW

19-11-2025 14:00 - 15:00 58 MW

19-11-2025 15:00 - 16:00 58 MW

19-11-2025 16:00 - 17:00 58 MW

19-11-2025 17:00 - 18:00 58 MW

19-11-2025 18:00 - 19:00 58 MW

19-11-2025 19:00 - 20:00 58 MW

19-11-2025 20:00 - 21:00 58 MW

19-11-2025 21:00 - 22:00 58 MW

19-11-2025 22:00 - 23:00 58 MW

19-11-2025 23:00 - 24:00 58 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 AT-IT border for delivery period 19-11-2025

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:

19-11-2025 00:00 - 01:00 314 MW

19-11-2025 01:00 - 02:00 314 MW

19-11-2025 02:00 - 03:00 314 MW

19-11-2025 03:00 - 04:00 314 MW

19-11-2025 04:00 - 05:00 314 MW

19-11-2025 05:00 - 06:00 314 MW

19-11-2025 06:00 - 07:00 314 MW

19-11-2025 07:00 - 08:00 314 MW

19-11-2025 08:00 - 09:00 314 MW

19-11-2025 09:00 - 10:00 314 MW

19-11-2025 10:00 - 11:00 314 MW

19-11-2025 11:00 - 12:00 314 MW

19-11-2025 12:00 - 13:00 314 MW

19-11-2025 13:00 - 14:00 314 MW

19-11-2025 14:00 - 15:00 314 MW

19-11-2025 15:00 - 16:00 314 MW

19-11-2025 16:00 - 17:00 314 MW

19-11-2025 17:00 - 18:00 314 MW

19-11-2025 18:00 - 19:00 314 MW

19-11-2025 19:00 - 20:00 314 MW

19-11-2025 20:00 - 21:00 314 MW

19-11-2025 21:00 - 22:00 314 MW

19-11-2025 22:00 - 23:00 314 MW

19-11-2025 23:00 - 24:00 314 MW

5. Amount of LTTR remaining after curtailment:

19-11-2025 00:00 - 01:00 156 MW

19-11-2025 01:00 - 02:00 156 MW

19-11-2025 02:00 - 03:00 156 MW

19-11-2025 03:00 - 04:00 154 MW

19-11-2025 04:00 - 05:00 154 MW

19-11-2025 05:00 - 06:00 154 MW

19-11-2025 06:00 - 07:00 154 MW

19-11-2025 07:00 - 08:00 162 MW

19-11-2025 08:00 - 09:00 162 MW

19-11-2025 09:00 - 10:00 149 MW

19-11-2025 10:00 - 11:00 149 MW

19-11-2025 11:00 - 12:00 149 MW

19-11-2025 12:00 - 13:00 154 MW

19-11-2025 13:00 - 14:00 154 MW

19-11-2025 14:00 - 15:00 154 MW

19-11-2025 15:00 - 16:00 152 MW

19-11-2025 16:00 - 17:00 152 MW

19-11-2025 17:00 - 18:00 152 MW

19-11-2025 18:00 - 19:00 180 MW

19-11-2025 19:00 - 20:00 180 MW

19-11-2025 20:00 - 21:00 180 MW

19-11-2025 21:00 - 22:00 165 MW

19-11-2025 22:00 - 23:00 165 MW

19-11-2025 23:00 - 24:00 165 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 DE-AT border for delivery period 19-11-2025

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:

19-11-2025 00:00 - 01:00 4820 MW

19-11-2025 01:00 - 02:00 4820 MW

19-11-2025 02:00 - 03:00 4820 MW

19-11-2025 03:00 - 04:00 4820 MW

19-11-2025 04:00 - 05:00 4820 MW

19-11-2025 05:00 - 06:00 4820 MW

19-11-2025 06:00 - 07:00 4820 MW

19-11-2025 07:00 - 08:00 4820 MW

19-11-2025 08:00 - 09:00 4820 MW

19-11-2025 09:00 - 10:00 4820 MW

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

19-11-2025 11:00 - 12:00 4820 MW

19-11-2025 12:00 - 13:00 4820 MW

19-11-2025 13:00 - 14:00 4820 MW

19-11-2025 14:00 - 15:00 4820 MW

19-11-2025 15:00 - 16:00 4820 MW

19-11-2025 16:00 - 17:00 4820 MW

19-11-2025 17:00 - 18:00 4820 MW

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

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

19-11-2025 20:00 - 21:00 4820 MW

19-11-2025 21:00 - 22:00 4820 MW

19-11-2025 22:00 - 23:00 4820 MW

19-11-2025 23:00 - 24:00 4820 MW

5. Amount of LTTR remaining after curtailment:

19-11-2025 00:00 - 01:00 4513 MW

19-11-2025 01:00 - 02:00 4513 MW

19-11-2025 02:00 - 03:00 4513 MW

19-11-2025 03:00 - 04:00 4513 MW

19-11-2025 04:00 - 05:00 4513 MW

19-11-2025 05:00 - 06:00 4513 MW

19-11-2025 06:00 - 07:00 4513 MW

19-11-2025 07:00 - 08:00 4513 MW

19-11-2025 08:00 - 09:00 4513 MW

19-11-2025 09:00 - 10:00 4513 MW

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

19-11-2025 11:00 - 12:00 4513 MW

19-11-2025 12:00 - 13:00 4513 MW

19-11-2025 13:00 - 14:00 4513 MW

19-11-2025 14:00 - 15:00 4513 MW

19-11-2025 15:00 - 16:00 4513 MW

19-11-2025 16:00 - 17:00 4513 MW

19-11-2025 17:00 - 18:00 4513 MW

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

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

19-11-2025 20:00 - 21:00 4513 MW

19-11-2025 21:00 - 22:00 4513 MW

19-11-2025 22:00 - 23:00 4513 MW

19-11-2025 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.

SDAC_JAO_01: SDAC market coupling 17/11 - Session complete

by JAO

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

SDAC_UMM_01a: Delay in final Market Coupling Results publication

by JAO

Dear Market Participants,

The SDAC Market Coupling process is delayed due to technical reasons or market issues.

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

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

Best regards,
Operations Team

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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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