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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 05-11-2025

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:

05-11-2025 00:00 - 01:00 4820 MW

05-11-2025 01:00 - 02:00 4820 MW

05-11-2025 02:00 - 03:00 4820 MW

05-11-2025 03:00 - 04:00 4820 MW

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

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

05-11-2025 06:00 - 07:00 4820 MW

05-11-2025 07:00 - 08:00 4820 MW

05-11-2025 08:00 - 09:00 4820 MW

05-11-2025 09:00 - 10:00 4820 MW

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

05-11-2025 11:00 - 12:00 4820 MW

05-11-2025 12:00 - 13:00 4820 MW

05-11-2025 13:00 - 14:00 4820 MW

05-11-2025 14:00 - 15:00 4820 MW

05-11-2025 15:00 - 16:00 4820 MW

05-11-2025 16:00 - 17:00 4820 MW

05-11-2025 17:00 - 18:00 4820 MW

05-11-2025 18:00 - 19:00 4820 MW

05-11-2025 19:00 - 20:00 4820 MW

05-11-2025 20:00 - 21:00 4820 MW

05-11-2025 21:00 - 22:00 4820 MW

05-11-2025 22:00 - 23:00 4820 MW

05-11-2025 23:00 - 24:00 4820 MW

5. Amount of LTTR remaining after curtailment:

05-11-2025 00:00 - 01:00 4513 MW

05-11-2025 01:00 - 02:00 4513 MW

05-11-2025 02:00 - 03:00 4513 MW

05-11-2025 03:00 - 04:00 4513 MW

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

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

05-11-2025 06:00 - 07:00 4513 MW

05-11-2025 07:00 - 08:00 4513 MW

05-11-2025 08:00 - 09:00 4513 MW

05-11-2025 09:00 - 10:00 4513 MW

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

05-11-2025 11:00 - 12:00 4513 MW

05-11-2025 12:00 - 13:00 4513 MW

05-11-2025 13:00 - 14:00 4513 MW

05-11-2025 14:00 - 15:00 4513 MW

05-11-2025 15:00 - 16:00 4513 MW

05-11-2025 16:00 - 17:00 4513 MW

05-11-2025 17:00 - 18:00 4513 MW

05-11-2025 18:00 - 19:00 4513 MW

05-11-2025 19:00 - 20:00 4513 MW

05-11-2025 20:00 - 21:00 4513 MW

05-11-2025 21:00 - 22:00 4513 MW

05-11-2025 22:00 - 23:00 4513 MW

05-11-2025 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

UPDATE : Capacity Curtailment on the DK-NL border for delivery period 05-11-2025

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:

05-11-2025 07:00 - 08:00 300 MW

05-11-2025 08:00 - 09:00 300 MW

05-11-2025 09:00 - 10:00 300 MW

05-11-2025 10:00 - 11:00 300 MW

05-11-2025 11:00 - 12:00 300 MW

05-11-2025 12:00 - 13:00 300 MW

05-11-2025 13:00 - 14:00 300 MW

05-11-2025 14:00 - 15:00 300 MW

05-11-2025 15:00 - 16:00 300 MW

05-11-2025 16:00 - 17:00 300 MW

5. Amount of LTTR remaining after curtailment:

05-11-2025 07:00 - 08:00 0 MW

05-11-2025 08:00 - 09:00 0 MW

05-11-2025 09:00 - 10:00 0 MW

05-11-2025 10:00 - 11:00 0 MW

05-11-2025 11:00 - 12:00 0 MW

05-11-2025 12:00 - 13:00 0 MW

05-11-2025 13:00 - 14:00 0 MW

05-11-2025 14:00 - 15:00 0 MW

05-11-2025 15:00 - 16:00 0 MW

05-11-2025 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).

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

2025 Auction Calendar Update

by JAO

Dear Market Participants,

We would like to inform you that as per TSOs request, the 2025 Auction Calendar has been updated on the corridor VKL-GB<>D1.

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

Best regards,

JAO Operations 

Daily and Intraday Auction Results

by JAO

Dear Market Participants,

Due to the ongoing technical issue with the Auction Results Publication, please find the results attached to this message.

Thank you for your understanding.

Kind regards,

JAO Operations

Capacity Curtailment on the EE-LV border for delivery period 04-11-2025

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:

04-11-2025 17:00 - 18:00 550 MW

5. Amount of LTTR remaining after curtailment:

04-11-2025 17:00 - 18:00 509 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.

Please Download Allocation Results from Trader UI

by JAO

Dear Market Participants,

As previously communicated, we are currently experiencing a technical issue affecting the publication of the Auction Specifications and Results.

In the meantime, we kindly ask you to retrieve this data directly from the Trader UI.

Thank you for your understanding and cooperation.

Kind regards,

JAO Operations

Offered Capacity Not Published

by JAO

Dear Market Participants,

We are currently experiencing a technical issue affecting the publication of the Offered Capacities for the ongoing auctions.

For your reference, please check the values on the Trader UI.

Thank you for 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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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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