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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

SDAC_JAO_01: SDAC market coupling 12/11 - Session complete

by JAO

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

[SDAC_ExC_02b]: Delay in Final Market Coupling Results publication

by JAO

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.

Further information can be found in the Fallback Manual that is published on the following websites:

NEMO Committee

Jao Website Downtime today 12/11 between 14:00 and 14:30 hours

by JAO

Please be informed that the website will be under maintenance today. We expect a downtime of approximately 5 minutes between 14:00 and 14:30.

For any further queries, please reach out to us through our usual communication channels.

Thank you for your understanding.

JAO Operations

Capacity Curtailment on the NSL-GB-N2 border for delivery period 13-11-2026

by JAO

1. TSO(s)*:

NGNSL_IC

2. Identification of affected Long Term Transmission Rights:

NSL-GB-N2

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

13-11-2026 16:00 - 17:00 98 MW

13-11-2026 17:00 - 18:00 98 MW

13-11-2026 18:00 - 19:00 98 MW

13-11-2026 19:00 - 20:00 98 MW

13-11-2026 20:00 - 21:00 98 MW

13-11-2026 21:00 - 22:00 98 MW

13-11-2026 22:00 - 23:00 98 MW

5. Amount of LTTR remaining after curtailment:

13-11-2026 16:00 - 17:00 0 MW

13-11-2026 17:00 - 18:00 0 MW

13-11-2026 18:00 - 19:00 0 MW

13-11-2026 19:00 - 20:00 0 MW

13-11-2026 20:00 - 21:00 0 MW

13-11-2026 21:00 - 22:00 0 MW

13-11-2026 22:00 - 23:00 0 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 NTC restrictions

Capacity Curtailment on the GR-IT border for delivery period 13-11-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

GR-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

13-11-2026 00:00 - 01:00 499 MW

13-11-2026 01:00 - 02:00 499 MW

13-11-2026 02:00 - 03:00 499 MW

13-11-2026 03:00 - 04:00 499 MW

13-11-2026 04:00 - 05:00 499 MW

13-11-2026 05:00 - 06:00 499 MW

13-11-2026 06:00 - 07:00 499 MW

13-11-2026 07:00 - 08:00 499 MW

13-11-2026 08:00 - 09:00 499 MW

13-11-2026 09:00 - 10:00 499 MW

13-11-2026 10:00 - 11:00 499 MW

13-11-2026 11:00 - 12:00 499 MW

13-11-2026 12:00 - 13:00 499 MW

13-11-2026 13:00 - 14:00 499 MW

13-11-2026 14:00 - 15:00 499 MW

13-11-2026 15:00 - 16:00 499 MW

13-11-2026 16:00 - 17:00 499 MW

13-11-2026 17:00 - 18:00 499 MW

13-11-2026 18:00 - 19:00 499 MW

13-11-2026 19:00 - 20:00 499 MW

13-11-2026 20:00 - 21:00 499 MW

13-11-2026 21:00 - 22:00 499 MW

13-11-2026 22:00 - 23:00 499 MW

13-11-2026 23:00 - 24:00 499 MW

5. Amount of LTTR remaining after curtailment:

13-11-2026 00:00 - 01:00 238 MW

13-11-2026 01:00 - 02:00 238 MW

13-11-2026 02:00 - 03:00 238 MW

13-11-2026 03:00 - 04:00 238 MW

13-11-2026 04:00 - 05:00 238 MW

13-11-2026 05:00 - 06:00 238 MW

13-11-2026 06:00 - 07:00 238 MW

13-11-2026 07:00 - 08:00 238 MW

13-11-2026 08:00 - 09:00 238 MW

13-11-2026 09:00 - 10:00 238 MW

13-11-2026 10:00 - 11:00 238 MW

13-11-2026 11:00 - 12:00 238 MW

13-11-2026 12:00 - 13:00 238 MW

13-11-2026 13:00 - 14:00 238 MW

13-11-2026 14:00 - 15:00 238 MW

13-11-2026 15:00 - 16:00 238 MW

13-11-2026 16:00 - 17:00 238 MW

13-11-2026 17:00 - 18:00 238 MW

13-11-2026 18:00 - 19:00 238 MW

13-11-2026 19:00 - 20:00 238 MW

13-11-2026 20:00 - 21:00 238 MW

13-11-2026 21:00 - 22:00 238 MW

13-11-2026 22:00 - 23:00 238 MW

13-11-2026 23:00 - 24:00 238 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)*?
During the CC process, all the remedial actions provided by the TSOs are already considered by the CCC in the calculation
 

Capacity Curtailment on the SI-IT border for delivery period 13-11-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

SI-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

13-11-2026 09:00 - 10:00 305 MW

13-11-2026 10:00 - 11:00 305 MW

13-11-2026 11:00 - 12:00 305 MW

5. Amount of LTTR remaining after curtailment:

13-11-2026 09:00 - 10:00 268 MW

13-11-2026 10:00 - 11:00 268 MW

13-11-2026 11:00 - 12:00 268 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)*?
During the CC process, all the remedial actions provided by the TSOs are already considered by the CCC in the calculation

Capacity Curtailment on the IT-GR border for delivery period 13-11-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-GR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

13-11-2026 00:00 - 01:00 500 MW

13-11-2026 01:00 - 02:00 500 MW

13-11-2026 02:00 - 03:00 500 MW

13-11-2026 03:00 - 04:00 500 MW

13-11-2026 04:00 - 05:00 500 MW

13-11-2026 05:00 - 06:00 500 MW

13-11-2026 06:00 - 07:00 500 MW

13-11-2026 07:00 - 08:00 500 MW

13-11-2026 08:00 - 09:00 500 MW

13-11-2026 09:00 - 10:00 500 MW

13-11-2026 10:00 - 11:00 500 MW

13-11-2026 11:00 - 12:00 500 MW

13-11-2026 12:00 - 13:00 500 MW

13-11-2026 13:00 - 14:00 500 MW

13-11-2026 14:00 - 15:00 500 MW

13-11-2026 15:00 - 16:00 500 MW

13-11-2026 16:00 - 17:00 500 MW

13-11-2026 17:00 - 18:00 500 MW

13-11-2026 18:00 - 19:00 500 MW

13-11-2026 19:00 - 20:00 500 MW

13-11-2026 20:00 - 21:00 500 MW

13-11-2026 21:00 - 22:00 500 MW

13-11-2026 22:00 - 23:00 500 MW

13-11-2026 23:00 - 24:00 500 MW

5. Amount of LTTR remaining after curtailment:

13-11-2026 00:00 - 01:00 241 MW

13-11-2026 01:00 - 02:00 241 MW

13-11-2026 02:00 - 03:00 241 MW

13-11-2026 03:00 - 04:00 241 MW

13-11-2026 04:00 - 05:00 241 MW

13-11-2026 05:00 - 06:00 241 MW

13-11-2026 06:00 - 07:00 241 MW

13-11-2026 07:00 - 08:00 241 MW

13-11-2026 08:00 - 09:00 241 MW

13-11-2026 09:00 - 10:00 241 MW

13-11-2026 10:00 - 11:00 241 MW

13-11-2026 11:00 - 12:00 241 MW

13-11-2026 12:00 - 13:00 241 MW

13-11-2026 13:00 - 14:00 241 MW

13-11-2026 14:00 - 15:00 241 MW

13-11-2026 15:00 - 16:00 241 MW

13-11-2026 16:00 - 17:00 241 MW

13-11-2026 17:00 - 18:00 241 MW

13-11-2026 18:00 - 19:00 241 MW

13-11-2026 19:00 - 20:00 241 MW

13-11-2026 20:00 - 21:00 241 MW

13-11-2026 21:00 - 22:00 241 MW

13-11-2026 22:00 - 23:00 241 MW

13-11-2026 23:00 - 24:00 241 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)*?
During the CC process, all the remedial actions provided by the TSOs are already considered by the CCC in the calculation

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_logo_new
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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