See Our

Annual Report

Read here

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.

 

Go down

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

SDAC Market Coupling Members’ Testing 03 June 2026 - Registration Open

by JAO

We are pleased to announce that the members’ testing for SDAC Market Coupling will take place on 03 June 2026. It provides an opportunity to fine-tune processes, validate key scenarios, and ensure everything is in place.

During the testing, TSO cross-border nomination processes and JAO shadow auctions will be active and available only during the day of execution, with the following scenario:

  • Delivery 04/06/2026 Full decoupling with shadow auction (including Nominations)

To register, please provide us with the following details:

  • Company Name
  • EIC Code
  • Full Name of Participant(s)
  • Email Address of Participant(s)
  • eCAT Username (if already registered)

Please note:

Registration is limited to members already participating in the shadow auction allocation in the production environment.

Interconnector entitlements will be copied from the production environment to facilitate nomination of shadow auction capacity towards the TSOs.

Deadline for registration: 26/05/2026. A reminder will be sent shortly before the end of the registration window.

Please find the information package attached.

Should you have any questions, do not hesitate to reach out to us at helpdesk@jao.eu

Capacity Curtailment on the IF1-GB-FR border for delivery period 22-05-2026

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:

22-05-2026 00:00 - 01:00 1889 MW

22-05-2026 01:00 - 02:00 1889 MW

22-05-2026 02:00 - 03:00 1889 MW

22-05-2026 03:00 - 04:00 1889 MW

22-05-2026 04:00 - 05:00 1889 MW

22-05-2026 05:00 - 06:00 1889 MW

22-05-2026 06:00 - 07:00 1889 MW

22-05-2026 07:00 - 08:00 1889 MW

22-05-2026 08:00 - 09:00 1889 MW

22-05-2026 09:00 - 10:00 1889 MW

22-05-2026 10:00 - 11:00 1889 MW

22-05-2026 11:00 - 12:00 1889 MW

22-05-2026 12:00 - 13:00 1889 MW

22-05-2026 13:00 - 14:00 1889 MW

22-05-2026 14:00 - 15:00 1889 MW

22-05-2026 15:00 - 16:00 1889 MW

22-05-2026 16:00 - 17:00 1889 MW

22-05-2026 17:00 - 18:00 1889 MW

22-05-2026 18:00 - 19:00 1889 MW

22-05-2026 19:00 - 20:00 1889 MW

22-05-2026 20:00 - 21:00 1889 MW

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

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

22-05-2026 23:00 - 24:00 1889 MW

5. Amount of LTTR remaining after curtailment:

22-05-2026 00:00 - 01:00 1416 MW

22-05-2026 01:00 - 02:00 1416 MW

22-05-2026 02:00 - 03:00 1416 MW

22-05-2026 03:00 - 04:00 1416 MW

22-05-2026 04:00 - 05:00 1416 MW

22-05-2026 05:00 - 06:00 1416 MW

22-05-2026 06:00 - 07:00 1416 MW

22-05-2026 07:00 - 08:00 1416 MW

22-05-2026 08:00 - 09:00 1416 MW

22-05-2026 09:00 - 10:00 1416 MW

22-05-2026 10:00 - 11:00 1416 MW

22-05-2026 11:00 - 12:00 1416 MW

22-05-2026 12:00 - 13:00 1416 MW

22-05-2026 13:00 - 14:00 1416 MW

22-05-2026 14:00 - 15:00 1416 MW

22-05-2026 15:00 - 16:00 1416 MW

22-05-2026 16:00 - 17:00 1416 MW

22-05-2026 17:00 - 18:00 1416 MW

22-05-2026 18:00 - 19:00 1416 MW

22-05-2026 19:00 - 20:00 1416 MW

22-05-2026 20:00 - 21:00 1416 MW

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

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

22-05-2026 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*:

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 22-05-2026

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:

22-05-2026 00:00 - 01:00 1900 MW

22-05-2026 01:00 - 02:00 1900 MW

22-05-2026 02:00 - 03:00 1900 MW

22-05-2026 03:00 - 04:00 1900 MW

22-05-2026 04:00 - 05:00 1900 MW

22-05-2026 05:00 - 06:00 1900 MW

22-05-2026 06:00 - 07:00 1900 MW

22-05-2026 07:00 - 08:00 1900 MW

22-05-2026 08:00 - 09:00 1900 MW

22-05-2026 09:00 - 10:00 1900 MW

22-05-2026 10:00 - 11:00 1900 MW

22-05-2026 11:00 - 12:00 1900 MW

22-05-2026 12:00 - 13:00 1900 MW

22-05-2026 13:00 - 14:00 1900 MW

22-05-2026 14:00 - 15:00 1900 MW

22-05-2026 15:00 - 16:00 1900 MW

22-05-2026 16:00 - 17:00 1900 MW

22-05-2026 17:00 - 18:00 1900 MW

22-05-2026 18:00 - 19:00 1900 MW

22-05-2026 19:00 - 20:00 1900 MW

22-05-2026 20:00 - 21:00 1900 MW

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

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

22-05-2026 23:00 - 24:00 1900 MW

5. Amount of LTTR remaining after curtailment:

22-05-2026 00:00 - 01:00 1448 MW

22-05-2026 01:00 - 02:00 1448 MW

22-05-2026 02:00 - 03:00 1448 MW

22-05-2026 03:00 - 04:00 1448 MW

22-05-2026 04:00 - 05:00 1448 MW

22-05-2026 05:00 - 06:00 1448 MW

22-05-2026 06:00 - 07:00 1448 MW

22-05-2026 07:00 - 08:00 1448 MW

22-05-2026 08:00 - 09:00 1448 MW

22-05-2026 09:00 - 10:00 1448 MW

22-05-2026 10:00 - 11:00 1448 MW

22-05-2026 11:00 - 12:00 1448 MW

22-05-2026 12:00 - 13:00 1448 MW

22-05-2026 13:00 - 14:00 1448 MW

22-05-2026 14:00 - 15:00 1448 MW

22-05-2026 15:00 - 16:00 1448 MW

22-05-2026 16:00 - 17:00 1448 MW

22-05-2026 17:00 - 18:00 1448 MW

22-05-2026 18:00 - 19:00 1448 MW

22-05-2026 19:00 - 20:00 1448 MW

22-05-2026 20:00 - 21:00 1448 MW

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

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

22-05-2026 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*:

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 10-05-2026

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:

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

10-05-2026 11:00 - 12:00 400 MW

10-05-2026 12:00 - 13:00 400 MW

10-05-2026 13:00 - 14:00 400 MW

10-05-2026 14:00 - 15:00 400 MW

10-05-2026 15:00 - 16:00 400 MW

5. Amount of LTTR remaining after curtailment:

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

10-05-2026 11:00 - 12:00 0 MW

10-05-2026 12:00 - 13:00 0 MW

10-05-2026 13:00 - 14:00 0 MW

10-05-2026 14:00 - 15:00 0 MW

10-05-2026 15:00 - 16:00 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 EE-LV border for delivery period 09-05-2026

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:

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

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

09-05-2026 10:00 - 11:00 440 MW

5. Amount of LTTR remaining after curtailment:

09-05-2026 08:00 - 09:00 405 MW

09-05-2026 09:00 - 10:00 405 MW

09-05-2026 10:00 - 11:00 403 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.

*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 CH-IT border for delivery period 09-05-2026

by JAO

1. TSO(s)*:

SWISSGRID

2. Identification of affected Long Term Transmission Rights:

CH-IT

3. Triggering event:

Curtailment due to Curtailment to ensure operation remains within Operational Security Limits

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

09-05-2026 11:00 - 12:00 282 MW

09-05-2026 12:00 - 13:00 282 MW

09-05-2026 13:00 - 14:00 282 MW

09-05-2026 14:00 - 15:00 282 MW

09-05-2026 15:00 - 16:00 282 MW

5. Amount of LTTR remaining after curtailment:

09-05-2026 11:00 - 12:00 0 MW

09-05-2026 12:00 - 13:00 0 MW

09-05-2026 13:00 - 14:00 0 MW

09-05-2026 14:00 - 15:00 0 MW

09-05-2026 15:00 - 16:00 0 MW

Capacity Curtailment on the FR-IT border for delivery period 09-05-2026

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:

09-05-2026 11:00 - 12:00 451 MW

09-05-2026 12:00 - 13:00 451 MW

09-05-2026 13:00 - 14:00 451 MW

09-05-2026 14:00 - 15:00 451 MW

09-05-2026 15:00 - 16:00 451 MW

09-05-2026 16:00 - 17:00 451 MW

5. Amount of LTTR remaining after curtailment:

09-05-2026 11:00 - 12:00 17 MW

09-05-2026 12:00 - 13:00 17 MW

09-05-2026 13:00 - 14:00 17 MW

09-05-2026 14:00 - 15:00 17 MW

09-05-2026 15:00 - 16:00 17 MW

09-05-2026 16:00 - 17:00 414 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. 

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.

Get to know us
Image
JAO workers

Frequently asked questions

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

Do you need support?

If you can't find an answer to your question, our team is here to help!