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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 IF1-GB-FR border for delivery period 01-06-2026

by JAO

1. TSO(s)*:

RNP

2. Identification of affected Long Term Transmission Rights:

IF1-GB-FR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

01-06-2026 00:00 - 01:00 1690 MW

01-06-2026 01:00 - 02:00 1690 MW

01-06-2026 02:00 - 03:00 1690 MW

01-06-2026 03:00 - 04:00 1690 MW

01-06-2026 04:00 - 05:00 1690 MW

01-06-2026 05:00 - 06:00 1690 MW

01-06-2026 06:00 - 07:00 1690 MW

01-06-2026 07:00 - 08:00 1690 MW

01-06-2026 08:00 - 09:00 1690 MW

01-06-2026 09:00 - 10:00 1690 MW

01-06-2026 10:00 - 11:00 1690 MW

01-06-2026 11:00 - 12:00 1690 MW

01-06-2026 12:00 - 13:00 1690 MW

01-06-2026 13:00 - 14:00 1690 MW

01-06-2026 14:00 - 15:00 1690 MW

01-06-2026 15:00 - 16:00 1690 MW

01-06-2026 16:00 - 17:00 1690 MW

01-06-2026 17:00 - 18:00 1690 MW

01-06-2026 18:00 - 19:00 1690 MW

01-06-2026 19:00 - 20:00 1690 MW

01-06-2026 20:00 - 21:00 1690 MW

01-06-2026 21:00 - 22:00 1690 MW

01-06-2026 22:00 - 23:00 1690 MW

01-06-2026 23:00 - 24:00 1690 MW

5. Amount of LTTR remaining after curtailment:

01-06-2026 00:00 - 01:00 1434 MW

01-06-2026 01:00 - 02:00 1434 MW

01-06-2026 02:00 - 03:00 1434 MW

01-06-2026 03:00 - 04:00 1434 MW

01-06-2026 04:00 - 05:00 1434 MW

01-06-2026 05:00 - 06:00 1434 MW

01-06-2026 06:00 - 07:00 1434 MW

01-06-2026 07:00 - 08:00 1434 MW

01-06-2026 08:00 - 09:00 1434 MW

01-06-2026 09:00 - 10:00 1434 MW

01-06-2026 10:00 - 11:00 1434 MW

01-06-2026 11:00 - 12:00 1434 MW

01-06-2026 12:00 - 13:00 1434 MW

01-06-2026 13:00 - 14:00 1434 MW

01-06-2026 14:00 - 15:00 1434 MW

01-06-2026 15:00 - 16:00 1434 MW

01-06-2026 16:00 - 17:00 1434 MW

01-06-2026 17:00 - 18:00 1434 MW

01-06-2026 18:00 - 19:00 1434 MW

01-06-2026 19:00 - 20:00 1434 MW

01-06-2026 20:00 - 21:00 1434 MW

01-06-2026 21:00 - 22:00 1434 MW

01-06-2026 22:00 - 23:00 1434 MW

01-06-2026 23:00 - 24:00 1434 MW

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

Thermal Limits

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

Capacity limitation due to unplanned maintenance

Capacity Curtailment on the IF1-FR-GB border for delivery period 01-06-2026

by JAO

1. TSO(s)*:

RNP

2. Identification of affected Long Term Transmission Rights:

IF1-FR-GB

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

01-06-2026 00:00 - 01:00 1700 MW

01-06-2026 01:00 - 02:00 1700 MW

01-06-2026 02:00 - 03:00 1700 MW

01-06-2026 03:00 - 04:00 1700 MW

01-06-2026 04:00 - 05:00 1700 MW

01-06-2026 05:00 - 06:00 1700 MW

01-06-2026 06:00 - 07:00 1700 MW

01-06-2026 07:00 - 08:00 1700 MW

01-06-2026 08:00 - 09:00 1700 MW

01-06-2026 09:00 - 10:00 1700 MW

01-06-2026 10:00 - 11:00 1700 MW

01-06-2026 11:00 - 12:00 1700 MW

01-06-2026 12:00 - 13:00 1700 MW

01-06-2026 13:00 - 14:00 1700 MW

01-06-2026 14:00 - 15:00 1700 MW

01-06-2026 15:00 - 16:00 1700 MW

01-06-2026 16:00 - 17:00 1700 MW

01-06-2026 17:00 - 18:00 1700 MW

01-06-2026 18:00 - 19:00 1700 MW

01-06-2026 19:00 - 20:00 1700 MW

01-06-2026 20:00 - 21:00 1700 MW

01-06-2026 21:00 - 22:00 1700 MW

01-06-2026 22:00 - 23:00 1700 MW

01-06-2026 23:00 - 24:00 1700 MW

5. Amount of LTTR remaining after curtailment:

01-06-2026 00:00 - 01:00 1452 MW

01-06-2026 01:00 - 02:00 1452 MW

01-06-2026 02:00 - 03:00 1452 MW

01-06-2026 03:00 - 04:00 1452 MW

01-06-2026 04:00 - 05:00 1452 MW

01-06-2026 05:00 - 06:00 1452 MW

01-06-2026 06:00 - 07:00 1452 MW

01-06-2026 07:00 - 08:00 1452 MW

01-06-2026 08:00 - 09:00 1452 MW

01-06-2026 09:00 - 10:00 1452 MW

01-06-2026 10:00 - 11:00 1452 MW

01-06-2026 11:00 - 12:00 1452 MW

01-06-2026 12:00 - 13:00 1452 MW

01-06-2026 13:00 - 14:00 1452 MW

01-06-2026 14:00 - 15:00 1452 MW

01-06-2026 15:00 - 16:00 1452 MW

01-06-2026 16:00 - 17:00 1452 MW

01-06-2026 17:00 - 18:00 1452 MW

01-06-2026 18:00 - 19:00 1452 MW

01-06-2026 19:00 - 20:00 1452 MW

01-06-2026 20:00 - 21:00 1452 MW

01-06-2026 21:00 - 22:00 1452 MW

01-06-2026 22:00 - 23:00 1452 MW

01-06-2026 23:00 - 24:00 1452 MW

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

Thermal Limits

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

Capacity limitation due to unplanned maintenance

Capacity Curtailment on the ME-IT border for delivery period 20-05-2026

by JAO

1. TSO(s)*:

CGES

2. Identification of affected Long Term Transmission Rights:

ME-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

20-05-2026 09:00 - 10:00 400 MW

20-05-2026 10:00 - 11:00 400 MW

20-05-2026 11:00 - 12:00 400 MW

20-05-2026 12:00 - 13:00 400 MW

20-05-2026 13:00 - 14:00 400 MW

20-05-2026 14:00 - 15:00 400 MW

20-05-2026 15:00 - 16:00 400 MW

20-05-2026 16:00 - 17:00 400 MW

5. Amount of LTTR remaining after curtailment:

20-05-2026 09:00 - 10:00 0 MW

20-05-2026 10:00 - 11:00 0 MW

20-05-2026 11:00 - 12:00 0 MW

20-05-2026 12:00 - 13:00 0 MW

20-05-2026 13:00 - 14:00 0 MW

20-05-2026 14:00 - 15:00 0 MW

20-05-2026 15:00 - 16:00 0 MW

20-05-2026 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*:

HVDC Monita

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

Capacity Curtailment on the DK-NL border for delivery period 20-05-2026

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:

20-05-2026 08:00 - 09:00 199 MW

20-05-2026 09:00 - 10:00 199 MW

20-05-2026 10:00 - 11:00 199 MW

20-05-2026 11:00 - 12:00 199 MW

20-05-2026 12:00 - 13:00 199 MW

20-05-2026 13:00 - 14:00 199 MW

20-05-2026 14:00 - 15:00 199 MW

20-05-2026 15:00 - 16:00 199 MW

20-05-2026 16:00 - 17:00 199 MW

20-05-2026 17:00 - 18:00 199 MW

5. Amount of LTTR remaining after curtailment:

20-05-2026 08:00 - 09:00 0 MW

20-05-2026 09:00 - 10:00 0 MW

20-05-2026 10:00 - 11:00 0 MW

20-05-2026 11:00 - 12:00 0 MW

20-05-2026 12:00 - 13:00 0 MW

20-05-2026 13:00 - 14:00 0 MW

20-05-2026 14:00 - 15:00 0 MW

20-05-2026 15:00 - 16:00 0 MW

20-05-2026 16:00 - 17:00 0 MW

20-05-2026 17:00 - 18:00 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).

2026 Auction Calendar Update IFA2 Monthly Auctions

by JAO

We would like to inform you that as per TSOs request, the 2026 Auction Calendar has been updated on the corridors IF2-FR<>GB and IF1-FR<>GB.

Auctions Cancelled:

IF1-FR-GB-M-BASE---260801-03

IF1-GB-FR-M-BASE---260801-03

Auctions Created:

IF2-FR-GB-M-BASE---260801-04 – Bid Submission Opening on 20/05/2026 at 11:40 CET and Bid Submission Closing on 21/05/2026 at 11:40 CET

IF2-GB-FR-M-BASE---260801-04 – Bid Submission Opening on 20/05/2026 at 11:40 CET and Bid Submission Closing on 21/05/2026 at 11:40 CET

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

Capacity Curtailment on the EE-LV border for delivery period 19-05-2026

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:

19-05-2026 07:00 - 08:00 440 MW

19-05-2026 08:00 - 09:00 440 MW

19-05-2026 09:00 - 10:00 440 MW

19-05-2026 10:00 - 11:00 440 MW

19-05-2026 11:00 - 12:00 440 MW

19-05-2026 12:00 - 13:00 440 MW

19-05-2026 13:00 - 14:00 440 MW

19-05-2026 14:00 - 15:00 440 MW

19-05-2026 15:00 - 16:00 440 MW

19-05-2026 17:00 - 18:00 440 MW

19-05-2026 18:00 - 19:00 440 MW

5. Amount of LTTR remaining after curtailment:

19-05-2026 07:00 - 08:00 403 MW

19-05-2026 08:00 - 09:00 403 MW

19-05-2026 09:00 - 10:00 400 MW

19-05-2026 10:00 - 11:00 403 MW

19-05-2026 11:00 - 12:00 404 MW

19-05-2026 12:00 - 13:00 402 MW

19-05-2026 13:00 - 14:00 399 MW

19-05-2026 14:00 - 15:00 400 MW

19-05-2026 15:00 - 16:00 398 MW

19-05-2026 17:00 - 18:00 400 MW

19-05-2026 18:00 - 19:00 402 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 ES-FR border for delivery period 19-05-2026

by JAO

1. TSO(s)*:

RTE-TSO

2. Identification of affected Long Term Transmission Rights:

ES-FR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

19-05-2026 11:00 - 12:00 750 MW

19-05-2026 12:00 - 13:00 750 MW

19-05-2026 13:00 - 14:00 750 MW

19-05-2026 14:00 - 15:00 750 MW

19-05-2026 15:00 - 16:00 750 MW

19-05-2026 16:00 - 17:00 750 MW

5. Amount of LTTR remaining after curtailment:

19-05-2026 11:00 - 12:00 538 MW

19-05-2026 12:00 - 13:00 538 MW

19-05-2026 13:00 - 14:00 538 MW

19-05-2026 14:00 - 15:00 538 MW

19-05-2026 15:00 - 16:00 538 MW

19-05-2026 16:00 - 17:00 538 MW

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

      11:00-12:00 BREUIL - MARMAGNGE

      12:00-13:00 BREUIL - MARMAGNGE

      13:00-14:00 BREUIL - MARMAGNGE

      14:00-15:00 BREUIL - MARMAGNGE

      15:00-16:00 BREUIL - MARMAGNGE

      16:00-17:00 BREUIL - MARMAGNGE

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

   The available remedial actions were assessed as insufficient or ineffective to avoid the violation of operational security limits

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. 

ISO
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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