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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 ME-IT border for delivery period 29-04-2026

by JAO

1. TSO(s)*:

CGES, TERNA

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:

29-04-2026 12:00 - 13:00 400 MW

29-04-2026 13:00 - 14:00 400 MW

29-04-2026 14:00 - 15:00 400 MW

5. Amount of LTTR remaining after curtailment:

29-04-2026 12:00 - 13:00 0 MW

29-04-2026 13:00 - 14:00 0 MW

29-04-2026 14:00 - 15:00 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 27/04 - 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 28-04-2026

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:

28-04-2026 06:00 - 07:00 450 MW

28-04-2026 07:00 - 08:00 450 MW

28-04-2026 12:00 - 13:00 450 MW

28-04-2026 13:00 - 14:00 450 MW

28-04-2026 14:00 - 15:00 450 MW

28-04-2026 15:00 - 16:00 450 MW

28-04-2026 16:00 - 17:00 450 MW

28-04-2026 18:00 - 19:00 450 MW

28-04-2026 20:00 - 21:00 450 MW

5. Amount of LTTR remaining after curtailment:

28-04-2026 06:00 - 07:00 415 MW

28-04-2026 07:00 - 08:00 415 MW

28-04-2026 12:00 - 13:00 394 MW

28-04-2026 13:00 - 14:00 386 MW

28-04-2026 14:00 - 15:00 380 MW

28-04-2026 15:00 - 16:00 380 MW

28-04-2026 16:00 - 17:00 380 MW

28-04-2026 18:00 - 19:00 380 MW

28-04-2026 20:00 - 21:00 391 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.

Banking Holiday: Friday, May 1 2026 – Impact on Transactions and Credit Limit Updates

by JAO

Dear Market Participant,

Please be advised that Friday, May 1, 2026, is a banking holiday in Luxembourg Labour Day: http://www.jao.eu/resource-center/public-holidays

This holiday applies solely to the banking sector, and JAO Operations will remain available.

Please note that any credit limit update resulting from transactions on your ING business account will not be reflected until Monday, May 4, 2026

Additionally, transactions initiated after ING Luxembourg's cutoff time Thursday, Abril 30, 2026, will have a value date Monday, May 4, 2026.

We kindly recommend that you adjust your financial schedule accordingly to accommodate these changes.

Best regards,

JAO Operations Team

Delay of Publication of Validation Reductions ATC for BD 27/04/2026

by JAO

Please note that the publication of Validation Reductions ATC for BD 27/04/2026 is not yet available.

We are currently investigating the root cause of this delay and will publish the data as soon as possible.

Thank you for your understanding.

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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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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Frequently asked questions

Check out the common questions and our answers on how to use the auction platform.

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