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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.

 

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

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Capacity Curtailment on the ES-FR border for delivery period 17-10-2026

by JAO

1. TSO(s)*:

RTE, REE

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:

17-10-2026 09:00 - 10:00 1030 MW

17-10-2026 10:00 - 11:00 1030 MW

17-10-2026 11:00 - 12:00 1030 MW

17-10-2026 12:00 - 13:00 1030 MW

17-10-2026 13:00 - 14:00 1030 MW

17-10-2026 14:00 - 15:00 1030 MW

17-10-2026 15:00 - 16:00 1030 MW

17-10-2026 16:00 - 17:00 1030 MW

17-10-2026 17:00 - 18:00 1030 MW

17-10-2026 18:00 - 19:00 1030 MW

5. Amount of LTTR remaining after curtailment:

17-10-2026 09:00 - 10:00 769 MW

17-10-2026 10:00 - 11:00 769 MW

17-10-2026 11:00 - 12:00 274 MW

17-10-2026 12:00 - 13:00 274 MW

17-10-2026 13:00 - 14:00 274 MW

17-10-2026 14:00 - 15:00 274 MW

17-10-2026 15:00 - 16:00 274 MW

17-10-2026 16:00 - 17:00 769 MW

17-10-2026 17:00 - 18:00 769 MW

17-10-2026 18:00 - 19:00 769 MW

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

   17/10/2026

      09:00-10:00 Dambron - Verger

      10:00-11:00 Dambron - Verger

      11:00-12:00 Dambron - Verger

      12:00-13:00 Dambron - Verger

      13:00-14:00 Dambron - Verger

      14:00-15:00 Dambron - Verger

      15:00-16:00 Dambron - Verger

      16:00-17:00 Dambron - Verger

      17:00-18:00 Dambron - Verger

18:00-19:00 Dambron - Verger

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

Capacity Curtailment on the FR-ES border for delivery period 17-10-2026

by JAO

1. TSO(s)*:

RTE, REE

2. Identification of affected Long Term Transmission Rights:

FR-ES

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

17-10-2026 19:00 - 20:00 1899 MW

17-10-2026 20:00 - 21:00 1899 MW

17-10-2026 21:00 - 22:00 1899 MW

17-10-2026 22:00 - 23:00 1899 MW

17-10-2026 23:00 - 24:00 1899 MW

5. Amount of LTTR remaining after curtailment:

17-10-2026 19:00 - 20:00 1801 MW

17-10-2026 20:00 - 21:00 1801 MW

17-10-2026 21:00 - 22:00 1801 MW

17-10-2026 22:00 - 23:00 1801 MW

17-10-2026 23:00 - 24:00 1801 MW

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

   17/10/2026

      19:00-20:00 Network Security

      20:00-21:00 Network Security

      21:00-22:00 Network Security

      22:00-23:00 Network Security

      23:00-24:00 Network Security

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

Publication Tool - Publication Delayed

by JAO

Due to technical issues, the Congestion Income publication for delivery date 16/10/2026 in Publication Tool is delayed

Capacity Curtailment on the IF1-GB-FR and IF1-FR-GB border for delivery period 24

by JAO

1. TSO(s)*:

NGIC

2. Identification of affected Long Term Transmission Rights:

IF1-GB-FR & 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:

24-10-2026 09:00 - 10:00 1299 MW

24-10-2026 10:00 - 11:00 1299 MW

24-10-2026 11:00 - 12:00 1299 MW

24-10-2026 12:00 - 13:00 1299 MW

24-10-2026 13:00 - 14:00 1299 MW

24-10-2026 14:00 - 15:00 1299 MW

24-10-2026 15:00 - 16:00 1299 MW

24-10-2026 16:00 - 17:00 1299 MW

24-10-2026 17:00 - 18:00 1299 MW

24-10-2026 18:00 - 19:00 1299 MW

24-10-2026 19:00 - 20:00 1299 MW

24-10-2026 20:00 - 21:00 1299 MW

24-10-2026 21:00 - 22:00 1299 MW

24-10-2026 22:00 - 23:00 1299 MW

24-10-2026 23:00 - 24:00 1299 MW

5. Amount of LTTR remaining after curtailment:

24-10-2026 09:00 - 10:00 957 MW

24-10-2026 10:00 - 11:00 957 MW

24-10-2026 11:00 - 12:00 957 MW

24-10-2026 12:00 - 13:00 957 MW

24-10-2026 13:00 - 14:00 957 MW

24-10-2026 14:00 - 15:00 957 MW

24-10-2026 15:00 - 16:00 957 MW

24-10-2026 16:00 - 17:00 957 MW

24-10-2026 17:00 - 18:00 957 MW

24-10-2026 18:00 - 19:00 957 MW

24-10-2026 19:00 - 20:00 957 MW

24-10-2026 20:00 - 21:00 957 MW

24-10-2026 21:00 - 22:00 957 MW

24-10-2026 22:00 - 23:00 957 MW

24-10-2026 23:00 - 24:00 957 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 planned maintenance

Capacity Curtailment on the IF1-GB-FR and IF1-FR-GB border for delivery period 25-10-2026 - 30-10-2026

by JAO

1. TSO(s)*:

NGIC

2. Identification of affected Long Term Transmission Rights:

IF1-GB-FR & 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:

00:00 - 01:00 1299 MW

01:00 - 02:00 1299 MW

02:00 - 03:00 1299 MW

03:00 - 04:00 1299 MW

04:00 - 05:00 1299 MW

05:00 - 06:00 1299 MW

06:00 - 07:00 1299 MW

07:00 - 08:00 1299 MW

08:00 - 09:00 1299 MW

09:00 - 10:00 1299 MW

10:00 - 11:00 1299 MW

11:00 - 12:00 1299 MW

12:00 - 13:00 1299 MW

13:00 - 14:00 1299 MW

14:00 - 15:00 1299 MW

15:00 - 16:00 1299 MW

16:00 - 17:00 1299 MW

17:00 - 18:00 1299 MW

18:00 - 19:00 1299 MW

19:00 - 20:00 1299 MW

20:00 - 21:00 1299 MW

21:00 - 22:00 1299 MW

22:00 - 23:00 1299 MW

23:00 - 24:00 1299 MW

every day 25-10-2029 - 30-10-2026

5. Amount of LTTR remaining after curtailment:

00:00 - 01:00 957 MW

01:00 - 02:00 957 MW

02:00 - 03:00 957 MW

03:00 - 04:00 957 MW

04:00 - 05:00 957 MW

05:00 - 06:00 957 MW

06:00 - 07:00 957 MW

07:00 - 08:00 957 MW

08:00 - 09:00 957 MW

09:00 - 10:00 957 MW

10:00 - 11:00 957 MW

11:00 - 12:00 957 MW

12:00 - 13:00 957 MW

13:00 - 14:00 957 MW

14:00 - 15:00 957 MW

15:00 - 16:00 957 MW

16:00 - 17:00 957 MW

17:00 - 18:00 957 MW

18:00 - 19:00 957 MW

19:00 - 20:00 957 MW

20:00 - 21:00 957 MW

21:00 - 22:00 957 MW

22:00 - 23:00 957 MW

23:00 - 24:00 957 MW

every day 25-10-2029 - 30-10-2026

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 planned maintenance

Capacity Curtailment on the NSL-GB-N2 border for delivery period 16-10-2026

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:

16-10-2026 19:00 - 20:00 50 MW

16-10-2026 20:00 - 21:00 50 MW

16-10-2026 21:00 - 22:00 50 MW

5. Amount of LTTR remaining after curtailment:

16-10-2026 19:00 - 20:00 0 MW

16-10-2026 20:00 - 21:00 0 MW

16-10-2026 21:00 - 22:00 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)*?
NTC restrictions
 

Capacity Curtailment on the NSL-GB-N2 border for delivery period 15-10-2026

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:

15-10-2026 12:00 - 13:00 50 MW

15-10-2026 18:00 - 19:00 50 MW

15-10-2026 19:00 - 20:00 50 MW

15-10-2026 20:00 - 21:00 50 MW

15-10-2026 21:00 - 22:00 50 MW

15-10-2026 22:00 - 23:00 50 MW

5. Amount of LTTR remaining after curtailment:

15-10-2026 12:00 - 13:00 0 MW

15-10-2026 18:00 - 19:00 0 MW

15-10-2026 19:00 - 20:00 0 MW

15-10-2026 20:00 - 21:00 0 MW

15-10-2026 21:00 - 22:00 0 MW

15-10-2026 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)*?
NTC restrictions
 

Resource Center

This section contains key information for market participants such as user guides, forms, auction rules, nomination deadlines and other documents.

Go to resources

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. 

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

Register your company

We created a user guide to support the onboarding of market participants. Learn more about the steps to register, the required documents and our service desk platform.

Go to registration
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Frequently asked questions

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

Go to FAQ

Do you need support?

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

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