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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

Publication for IDA 1 data in Publication Tool for BD 04/07/2025

by JAO

Dear Market Participants,

Please note that, due to the Core Partial Decoupling of IDA 1 the data for the delivery date of 04/07/2025 will not be available for IDA 2 in CoreID CCR Publication Tool.

Thank you for your understanding.

Best regards,

Operations Team

JAO_01: SDAC market coupling 03/07 - Session complete

by JAO

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

 

Kind regards,

Operations team

UMM_01a: Delay in final Market Coupling Results publication

by JAO

Dear Market Participants,

Dear all,

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.

We advise you to update your shadow bids at JAO eCAT platform before 14:10 CET/CEST.

Best regards,
Operations Team

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 EL1-GB-FR and EL1-FR-GB.

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 Team

Capacity Curtailment on the EE-LV border for delivery period 04-07-2025

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:

04-07-2025 05:00 - 06:00 500 MW

04-07-2025 20:00 - 21:00 500 MW

04-07-2025 21:00 - 22:00 500 MW

04-07-2025 22:00 - 23:00 500 MW

04-07-2025 23:00 - 24:00 500 MW

5. Amount of LTTR remaining after curtailment:

04-07-2025 05:00 - 06:00 464 MW

04-07-2025 20:00 - 21:00 464 MW

04-07-2025 21:00 - 22:00 464 MW

04-07-2025 22:00 - 23:00 463 MW

04-07-2025 23:00 - 24:00 464 MW

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

Please see the latest day-ahead net transfer capacity values published on the Nord Pool UMM Platform under "Unavailability of electricity facilities: Transmission EE → LV" at :

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

*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 IT-FR border for delivery period 04-07-2025

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-FR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

04-07-2025 18:00 - 19:00 1870 MW

04-07-2025 19:00 - 20:00 1870 MW

04-07-2025 20:00 - 21:00 1870 MW

04-07-2025 21:00 - 22:00 1870 MW

04-07-2025 22:00 - 23:00 1870 MW

5. Amount of LTTR remaining after curtailment:

04-07-2025 18:00 - 19:00 1302 MW

04-07-2025 19:00 - 20:00 611 MW

04-07-2025 20:00 - 21:00 611 MW

04-07-2025 21:00 - 22:00 611 MW

04-07-2025 22:00 - 23:00 1296 MW

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

7. Why alternative measures are not sufficient 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

Capacity Curtailment on the FR-IT border for delivery period 04-07-2025

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:

04-07-2025 12:00 - 13:00 2120 MW

04-07-2025 13:00 - 14:00 2120 MW

04-07-2025 14:00 - 15:00 2120 MW

5. Amount of LTTR remaining after curtailment:

04-07-2025 12:00 - 13:00 1949 MW

04-07-2025 13:00 - 14:00 1949 MW

04-07-2025 14:00 - 15:00 1949 MW

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

7. Why alternative measures are not sufficient 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

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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