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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.

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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 08-12-2025

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:
08-12-2025 00:00 - 01:00 4819 MW 
08-12-2025 01:00 - 02:00 4819 MW 
08-12-2025 02:00 - 03:00 4819 MW 
08-12-2025 03:00 - 04:00 4819 MW 
08-12-2025 04:00 - 05:00 4819 MW 
08-12-2025 05:00 - 06:00 4819 MW 
08-12-2025 06:00 - 07:00 4819 MW 
08-12-2025 07:00 - 08:00 4819 MW 
08-12-2025 08:00 - 09:00 4819 MW 
08-12-2025 09:00 - 10:00 4819 MW 
08-12-2025 10:00 - 11:00 4819 MW 
08-12-2025 11:00 - 12:00 4819 MW 
08-12-2025 12:00 - 13:00 4819 MW 
08-12-2025 13:00 - 14:00 4819 MW 
08-12-2025 14:00 - 15:00 4819 MW 
08-12-2025 15:00 - 16:00 4819 MW 
08-12-2025 16:00 - 17:00 4819 MW 
08-12-2025 17:00 - 18:00 4819 MW 
08-12-2025 18:00 - 19:00 4819 MW 
08-12-2025 19:00 - 20:00 4819 MW 
08-12-2025 20:00 - 21:00 4819 MW 
08-12-2025 21:00 - 22:00 4819 MW 
08-12-2025 22:00 - 23:00 4819 MW 
08-12-2025 23:00 - 24:00 4819 MW

5. Amount of LTTR remaining after curtailment:
08-12-2025 00:00 - 01:00 4458 MW 
08-12-2025 01:00 - 02:00 4458 MW 
08-12-2025 02:00 - 03:00 4458 MW 
08-12-2025 03:00 - 04:00 4458 MW 
08-12-2025 04:00 - 05:00 4458 MW 
08-12-2025 05:00 - 06:00 4458 MW 
08-12-2025 06:00 - 07:00 4458 MW 
08-12-2025 07:00 - 08:00 4458 MW 
08-12-2025 08:00 - 09:00 4458 MW 
08-12-2025 09:00 - 10:00 4458 MW 
08-12-2025 10:00 - 11:00 4458 MW 
08-12-2025 11:00 - 12:00 4458 MW 
08-12-2025 12:00 - 13:00 4458 MW 
08-12-2025 13:00 - 14:00 4458 MW 
08-12-2025 14:00 - 15:00 4458 MW 
08-12-2025 15:00 - 16:00 4458 MW 
08-12-2025 16:00 - 17:00 4458 MW 
08-12-2025 17:00 - 18:00 4458 MW 
08-12-2025 18:00 - 19:00 4458 MW 
08-12-2025 19:00 - 20:00 4458 MW 
08-12-2025 20:00 - 21:00 4458 MW 
08-12-2025 21:00 - 22:00 4458 MW 
08-12-2025 22:00 - 23:00 4458 MW 
08-12-2025 23:00 - 24:00 4458 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

Reminder: Yearly Auction on Adria Explicit borders opening on the 8th December

by JAO

A kind reminder that the Yearly auctions for the Adria Explicit borders will go live on the December 8th.

Please find below the details for the Yearly 2026 auctions (timings in CET):

Bidding Month

Interconnector Product Horizon Auction Start Time (of the opening) Auction end Time (of the End) Dispute Period

December 2025

IT-ME Y BASE 2026 08/12/2025 13:30 15/12/2025 13:30 1-1 days

December 2025

ME-IT Y BASE 2026 08/12/2025 13:30 15/12/2025  13:30 1-1 days

December 2025

ME-RS Y BASE 2026 08/12/2025 14:10 15/12/2025 14:10 1-1 days

December 2025

RS-ME Y BASE 2026 08/12/2025 14:10 15/12/2025 14:10 1-1 days

December 2025

MK-RS Y BASE 2026 08/12/2025 14:20 15/12/2025 14:20 1-1 days

December 2025

RS-MK Y BASE 2026 08/12/2025 14:20 15/12/2025 14:20 1-1 days

December 2025

BG-MK Y BASE 2026 08/12/2025 14:30 15/12/2025 14:30 1-1 days

December 2025

MK-BG Y BASE 2026 08/12/2025 14:30 15/12/2025 14:30 1-1 days

 

Should you have any questions or feedback, don’t hesitate to contact us.

JAO Operations Team

Capacity Curtailment on the DE-AT border for delivery period 07-12-2025

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:

07-12-2025 00:00 - 01:00 4819 MW

07-12-2025 01:00 - 02:00 4819 MW

07-12-2025 02:00 - 03:00 4819 MW

07-12-2025 03:00 - 04:00 4819 MW

07-12-2025 04:00 - 05:00 4819 MW

07-12-2025 05:00 - 06:00 4819 MW

07-12-2025 06:00 - 07:00 4819 MW

07-12-2025 07:00 - 08:00 4819 MW

07-12-2025 08:00 - 09:00 4819 MW

07-12-2025 09:00 - 10:00 4819 MW

07-12-2025 10:00 - 11:00 4819 MW

07-12-2025 11:00 - 12:00 4819 MW

07-12-2025 12:00 - 13:00 4819 MW

07-12-2025 13:00 - 14:00 4819 MW

07-12-2025 14:00 - 15:00 4819 MW

07-12-2025 15:00 - 16:00 4819 MW

07-12-2025 16:00 - 17:00 4819 MW

07-12-2025 17:00 - 18:00 4819 MW

07-12-2025 18:00 - 19:00 4819 MW

07-12-2025 19:00 - 20:00 4819 MW

07-12-2025 20:00 - 21:00 4819 MW

07-12-2025 21:00 - 22:00 4819 MW

07-12-2025 22:00 - 23:00 4819 MW

07-12-2025 23:00 - 24:00 4819 MW

5. Amount of LTTR remaining after curtailment:

07-12-2025 00:00 - 01:00 3861 MW

07-12-2025 01:00 - 02:00 3861 MW

07-12-2025 02:00 - 03:00 3861 MW

07-12-2025 03:00 - 04:00 3861 MW

07-12-2025 04:00 - 05:00 3861 MW

07-12-2025 05:00 - 06:00 3861 MW

07-12-2025 06:00 - 07:00 3861 MW

07-12-2025 07:00 - 08:00 3861 MW

07-12-2025 08:00 - 09:00 3861 MW

07-12-2025 09:00 - 10:00 3861 MW

07-12-2025 10:00 - 11:00 3861 MW

07-12-2025 11:00 - 12:00 3861 MW

07-12-2025 12:00 - 13:00 3861 MW

07-12-2025 13:00 - 14:00 3861 MW

07-12-2025 14:00 - 15:00 3861 MW

07-12-2025 15:00 - 16:00 3861 MW

07-12-2025 16:00 - 17:00 3861 MW

07-12-2025 17:00 - 18:00 3861 MW

07-12-2025 18:00 - 19:00 3861 MW

07-12-2025 19:00 - 20:00 3861 MW

07-12-2025 20:00 - 21:00 3861 MW

07-12-2025 21:00 - 22:00 3861 MW

07-12-2025 22:00 - 23:00 3861 MW

07-12-2025 23:00 - 24:00 3861 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.

Update: Approved Allocation Rules for Adria borders and BG-RS border

by JAO

Dear Market Participants,

Further to our previous notifications regarding the Adria and the Serbian borders, we would like to inform you that the following documents have now been approved by the relevant National Regulatory Authorities:

  • Italy – Montenegro
  • Montenegro – Serbia
  • North Macedonia – Serbia
  • Bulgaria – North Macedonia
  • Bulgaria – Serbia (amendment with effective date 1st January 2026)
  • Montenegro – Serbia
  • North Macedonia – Serbia
  • Bulgaria – North Macedonia
  • Bulgaria – Serbia (amending the previous standalone BG-RS daily allocation rules with effective date 19th January 2026)

The amended allocation rules for the borders HU-RS, HR-RS and RO-RS are still pending approval. We will inform you as soon as the approvals are received.

Best regards,

JAO Operations Team

 

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 IFA2. For more details, please refer to the Auction Calendar attached here to find its latest version.

2nd round for CH<>DE for Market Period 06/12/2025 closing time

by JAO

Please note that the 2nd round of the daily auction for the corridor CH-DE (both directions) with auction ID (CH-DE-D-DAILYPRODU-251206-02 and DE-CH-D-DAILYPRODU-251206-02) is closing today at 09:45

Cancellation of CH<>DE and 2nd round creation for CH<>DE for Market Period 06/12/2025

by JAO

As per TSO request, the CH-DE (both directions) Daily Auction for market period 06/12/2025 with the auction ID (CH-DE-D-DAILYPRODU-251206-01 and DE-CH-D-DAILYPRODU-251206-01) have been cancelled.

Please note that the 2nd round of the daily auction for the corridor CH-DE (both directions) with auction ID (CH-DE-D-DAILYPRODU-251206-02 and DE-CH-D-DAILYPRODU-251206-02) is opening today at 09:00

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

Kind regards,

JAO Operations

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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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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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