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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 IF1-FR-GB border for delivery period 13-05-2026

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:

13-05-2026 00:00 - 01:00 1900 MW

13-05-2026 01:00 - 02:00 1900 MW

13-05-2026 02:00 - 03:00 1900 MW

13-05-2026 03:00 - 04:00 1900 MW

13-05-2026 04:00 - 05:00 1900 MW

13-05-2026 05:00 - 06:00 1900 MW

13-05-2026 06:00 - 07:00 1900 MW

13-05-2026 07:00 - 08:00 1900 MW

13-05-2026 08:00 - 09:00 1900 MW

13-05-2026 09:00 - 10:00 1900 MW

13-05-2026 10:00 - 11:00 1900 MW

13-05-2026 11:00 - 12:00 1900 MW

13-05-2026 12:00 - 13:00 1900 MW

13-05-2026 13:00 - 14:00 1900 MW

13-05-2026 14:00 - 15:00 1900 MW

13-05-2026 15:00 - 16:00 1900 MW

13-05-2026 16:00 - 17:00 1900 MW

13-05-2026 17:00 - 18:00 1900 MW

13-05-2026 18:00 - 19:00 1900 MW

13-05-2026 19:00 - 20:00 1900 MW

13-05-2026 20:00 - 21:00 1900 MW

13-05-2026 21:00 - 22:00 1900 MW

13-05-2026 22:00 - 23:00 1900 MW

13-05-2026 23:00 - 24:00 1900 MW

5. Amount of LTTR remaining after curtailment:

13-05-2026 00:00 - 01:00 1448 MW

13-05-2026 01:00 - 02:00 1448 MW

13-05-2026 02:00 - 03:00 1448 MW

13-05-2026 03:00 - 04:00 1448 MW

13-05-2026 04:00 - 05:00 1448 MW

13-05-2026 05:00 - 06:00 1448 MW

13-05-2026 06:00 - 07:00 1448 MW

13-05-2026 07:00 - 08:00 1448 MW

13-05-2026 08:00 - 09:00 1448 MW

13-05-2026 09:00 - 10:00 1448 MW

13-05-2026 10:00 - 11:00 1448 MW

13-05-2026 11:00 - 12:00 1448 MW

13-05-2026 12:00 - 13:00 1448 MW

13-05-2026 13:00 - 14:00 1448 MW

13-05-2026 14:00 - 15:00 1448 MW

13-05-2026 15:00 - 16:00 1448 MW

13-05-2026 16:00 - 17:00 1448 MW

13-05-2026 17:00 - 18:00 1448 MW

13-05-2026 18:00 - 19:00 1448 MW

13-05-2026 19:00 - 20:00 1448 MW

13-05-2026 20:00 - 21:00 1448 MW

13-05-2026 21:00 - 22:00 1448 MW

13-05-2026 22:00 - 23:00 1448 MW

13-05-2026 23:00 - 24:00 1448 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 IF1-GB-FR border for delivery period 13-05-2026

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:

13-05-2026 00:00 - 01:00 1889 MW

13-05-2026 01:00 - 02:00 1889 MW

13-05-2026 02:00 - 03:00 1889 MW

13-05-2026 03:00 - 04:00 1889 MW

13-05-2026 04:00 - 05:00 1889 MW

13-05-2026 05:00 - 06:00 1889 MW

13-05-2026 06:00 - 07:00 1889 MW

13-05-2026 07:00 - 08:00 1889 MW

13-05-2026 08:00 - 09:00 1889 MW

13-05-2026 09:00 - 10:00 1889 MW

13-05-2026 10:00 - 11:00 1889 MW

13-05-2026 11:00 - 12:00 1889 MW

13-05-2026 12:00 - 13:00 1889 MW

13-05-2026 13:00 - 14:00 1889 MW

13-05-2026 14:00 - 15:00 1889 MW

13-05-2026 15:00 - 16:00 1889 MW

13-05-2026 16:00 - 17:00 1889 MW

13-05-2026 17:00 - 18:00 1889 MW

13-05-2026 18:00 - 19:00 1889 MW

13-05-2026 19:00 - 20:00 1889 MW

13-05-2026 20:00 - 21:00 1889 MW

13-05-2026 21:00 - 22:00 1889 MW

13-05-2026 22:00 - 23:00 1889 MW

13-05-2026 23:00 - 24:00 1889 MW

5. Amount of LTTR remaining after curtailment:

13-05-2026 00:00 - 01:00 1416 MW

13-05-2026 01:00 - 02:00 1416 MW

13-05-2026 02:00 - 03:00 1416 MW

13-05-2026 03:00 - 04:00 1416 MW

13-05-2026 04:00 - 05:00 1416 MW

13-05-2026 05:00 - 06:00 1416 MW

13-05-2026 06:00 - 07:00 1416 MW

13-05-2026 07:00 - 08:00 1416 MW

13-05-2026 08:00 - 09:00 1416 MW

13-05-2026 09:00 - 10:00 1416 MW

13-05-2026 10:00 - 11:00 1416 MW

13-05-2026 11:00 - 12:00 1416 MW

13-05-2026 12:00 - 13:00 1416 MW

13-05-2026 13:00 - 14:00 1416 MW

13-05-2026 14:00 - 15:00 1416 MW

13-05-2026 15:00 - 16:00 1416 MW

13-05-2026 16:00 - 17:00 1416 MW

13-05-2026 17:00 - 18:00 1416 MW

13-05-2026 18:00 - 19:00 1416 MW

13-05-2026 19:00 - 20:00 1416 MW

13-05-2026 20:00 - 21:00 1416 MW

13-05-2026 21:00 - 22:00 1416 MW

13-05-2026 22:00 - 23:00 1416 MW

13-05-2026 23:00 - 24:00 1416 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 ME-IT border for delivery period 01-05-2026

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:

01-05-2026 00:00 - 01:00 400 MW

01-05-2026 01:00 - 02:00 400 MW

01-05-2026 02:00 - 03:00 400 MW

01-05-2026 03:00 - 04:00 400 MW

01-05-2026 04:00 - 05:00 400 MW

01-05-2026 05:00 - 06:00 400 MW

01-05-2026 06:00 - 07:00 400 MW

01-05-2026 07:00 - 08:00 400 MW

01-05-2026 08:00 - 09:00 400 MW

01-05-2026 09:00 - 10:00 400 MW

01-05-2026 10:00 - 11:00 400 MW

01-05-2026 11:00 - 12:00 400 MW

01-05-2026 12:00 - 13:00 400 MW

01-05-2026 13:00 - 14:00 400 MW

01-05-2026 14:00 - 15:00 400 MW

01-05-2026 15:00 - 16:00 400 MW

01-05-2026 16:00 - 17:00 400 MW

01-05-2026 17:00 - 18:00 400 MW

01-05-2026 18:00 - 19:00 400 MW

01-05-2026 19:00 - 20:00 400 MW

01-05-2026 20:00 - 21:00 400 MW

01-05-2026 21:00 - 22:00 400 MW

01-05-2026 22:00 - 23:00 400 MW

01-05-2026 23:00 - 24:00 400 MW

5. Amount of LTTR remaining after curtailment:

01-05-2026 00:00 - 01:00 0 MW

01-05-2026 01:00 - 02:00 0 MW

01-05-2026 02:00 - 03:00 0 MW

01-05-2026 03:00 - 04:00 0 MW

01-05-2026 04:00 - 05:00 0 MW

01-05-2026 05:00 - 06:00 0 MW

01-05-2026 06:00 - 07:00 0 MW

01-05-2026 07:00 - 08:00 0 MW

01-05-2026 08:00 - 09:00 0 MW

01-05-2026 09:00 - 10:00 0 MW

01-05-2026 10:00 - 11:00 0 MW

01-05-2026 11:00 - 12:00 0 MW

01-05-2026 12:00 - 13:00 0 MW

01-05-2026 13:00 - 14:00 0 MW

01-05-2026 14:00 - 15:00 0 MW

01-05-2026 15:00 - 16:00 0 MW

01-05-2026 16:00 - 17:00 0 MW

01-05-2026 17:00 - 18:00 0 MW

01-05-2026 18:00 - 19:00 0 MW

01-05-2026 19:00 - 20:00 0 MW

01-05-2026 20:00 - 21:00 0 MW

01-05-2026 21:00 - 22:00 0 MW

01-05-2026 22:00 - 23:00 0 MW

01-05-2026 23:00 - 24:00 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

SDAC_JAO_01: SDAC market coupling 29/04 - Session complete

by JAO

Please be informed that the Day-Ahead market coupling session is now completed.

UMM_01a: Delay in final Market Coupling Results publication

by JAO

Dear all,

The 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.

If needed, another delay message will be sent out.

[ExC_02]: Delay in Market Coupling Results publication

by JAO

Please be aware that the publication of the Market Coupling Results is delayed until further notice. 

The Market Coupling Results will be published as soon as they are available.  

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

If needed, another delay message will be sent out

Capacity Curtailment on the EE-LV border for delivery period 30-04-2026

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:

30-04-2026 05:00 - 06:00 450 MW

30-04-2026 07:00 - 08:00 450 MW

30-04-2026 08:00 - 09:00 450 MW

30-04-2026 09:00 - 10:00 450 MW

30-04-2026 10:00 - 11:00 450 MW

30-04-2026 11:00 - 12:00 450 MW

30-04-2026 12:00 - 13:00 450 MW

30-04-2026 13:00 - 14:00 450 MW

30-04-2026 14:00 - 15:00 450 MW

30-04-2026 15:00 - 16:00 450 MW

30-04-2026 16:00 - 17:00 450 MW

30-04-2026 17:00 - 18:00 450 MW

30-04-2026 18:00 - 19:00 450 MW

30-04-2026 19:00 - 20:00 450 MW

5. Amount of LTTR remaining after curtailment:

30-04-2026 05:00 - 06:00 415 MW

30-04-2026 07:00 - 08:00 415 MW

30-04-2026 08:00 - 09:00 415 MW

30-04-2026 09:00 - 10:00 415 MW

30-04-2026 10:00 - 11:00 415 MW

30-04-2026 11:00 - 12:00 415 MW

30-04-2026 12:00 - 13:00 413 MW

30-04-2026 13:00 - 14:00 413 MW

30-04-2026 14:00 - 15:00 415 MW

30-04-2026 15:00 - 16:00 412 MW

30-04-2026 16:00 - 17:00 415 MW

30-04-2026 17:00 - 18:00 415 MW

30-04-2026 18:00 - 19:00 415 MW

30-04-2026 19:00 - 20:00 415 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 alread allocated on The Baltic balancing Market for balancing capacity sharing at Transparency Platform

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

There are no alternatives to the curtailment of the affected LTTRs.

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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