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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

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 04-02-2026

Published: 03/02/2026 | 06:59 by JAO
Delay of publications in Publication Tool For Business Date 03/02/2026

Published: 02/02/2026 | 12:02 by JAO
Capacity Curtailment on the IF1-GB-FR border for delivery period 05-02-2026

Published: 02/02/2026 | 11:55 by JAO
Capacity Curtailment on the IF1-FR-GB border for delivery period 05-02-2026

Published: 02/02/2026 | 11:55 by JAO
Capacity Curtailment on the IF1-GB-FR border for delivery period 04-02-2026

Published: 02/02/2026 | 11:54 by JAO
Capacity Curtailment on the IF1-FR-GB border for delivery period 04-02-2026

Published: 02/02/2026 | 11:53 by JAO
Delay of publications in Publication Tool

Published: 01/02/2026 | 11:54 by JAO

Go to Message board

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:

04-02-2026 08:00 - 09:00 1180 MW

04-02-2026 09:00 - 10:00 1180 MW

04-02-2026 10:00 - 11:00 1180 MW

04-02-2026 11:00 - 12:00 1180 MW

04-02-2026 12:00 - 13:00 1180 MW

04-02-2026 13:00 - 14:00 1180 MW

5. Amount of LTTR remaining after curtailment:

04-02-2026 08:00 - 09:00 1072 MW

04-02-2026 09:00 - 10:00 1072 MW

04-02-2026 10:00 - 11:00 1072 MW

04-02-2026 11:00 - 12:00 1072 MW

04-02-2026 12:00 - 13:00 1072 MW

04-02-2026 13:00 - 14:00 1072 MW

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

08:00-09:00 argia-mouguerre 2

09:00-10:00 argia-mouguerre 2

10:00-11:00 argia-mouguerre 2

11:00-12:00 argia-mouguerre 2

12:00-13:00 argia-mouguerre 2

13:00-14:00 argia-mouguerre 2

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

We would like to inform all Market Participants about possible delays of data being published in Publication Tool for delivery 03/02/2026.

Thank you for your understanding.

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:

05-02-2026 00:00 - 01:00 1396 MW

05-02-2026 01:00 - 02:00 1396 MW

05-02-2026 02:00 - 03:00 1396 MW

05-02-2026 03:00 - 04:00 1396 MW

05-02-2026 04:00 - 05:00 1396 MW

05-02-2026 05:00 - 06:00 1396 MW

05-02-2026 06:00 - 07:00 1396 MW

05-02-2026 07:00 - 08:00 1396 MW

05-02-2026 08:00 - 09:00 1396 MW

05-02-2026 09:00 - 10:00 1396 MW

05-02-2026 10:00 - 11:00 1396 MW

05-02-2026 11:00 - 12:00 1396 MW

05-02-2026 12:00 - 13:00 1396 MW

05-02-2026 13:00 - 14:00 1396 MW

05-02-2026 14:00 - 15:00 1396 MW

05-02-2026 15:00 - 16:00 1396 MW

05-02-2026 16:00 - 17:00 1396 MW

05-02-2026 17:00 - 18:00 1396 MW

05-02-2026 18:00 - 19:00 1396 MW

05-02-2026 19:00 - 20:00 1396 MW

05-02-2026 20:00 - 21:00 1396 MW

05-02-2026 21:00 - 22:00 1396 MW

05-02-2026 22:00 - 23:00 1396 MW

05-02-2026 23:00 - 24:00 1396 MW

5. Amount of LTTR remaining after curtailment:

05-02-2026 00:00 - 01:00 944 MW

05-02-2026 01:00 - 02:00 944 MW

05-02-2026 02:00 - 03:00 944 MW

05-02-2026 03:00 - 04:00 944 MW

05-02-2026 04:00 - 05:00 944 MW

05-02-2026 05:00 - 06:00 944 MW

05-02-2026 06:00 - 07:00 944 MW

05-02-2026 07:00 - 08:00 944 MW

05-02-2026 08:00 - 09:00 944 MW

05-02-2026 09:00 - 10:00 944 MW

05-02-2026 10:00 - 11:00 944 MW

05-02-2026 11:00 - 12:00 944 MW

05-02-2026 12:00 - 13:00 944 MW

05-02-2026 13:00 - 14:00 944 MW

05-02-2026 14:00 - 15:00 944 MW

05-02-2026 15:00 - 16:00 944 MW

05-02-2026 16:00 - 17:00 944 MW

05-02-2026 17:00 - 18:00 944 MW

05-02-2026 18:00 - 19:00 944 MW

05-02-2026 19:00 - 20:00 944 MW

05-02-2026 20:00 - 21:00 944 MW

05-02-2026 21:00 - 22:00 944 MW

05-02-2026 22:00 - 23:00 944 MW

05-02-2026 23:00 - 24:00 944 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

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:

05-02-2026 00:00 - 01:00 1400 MW

05-02-2026 01:00 - 02:00 1400 MW

05-02-2026 02:00 - 03:00 1400 MW

05-02-2026 03:00 - 04:00 1400 MW

05-02-2026 04:00 - 05:00 1400 MW

05-02-2026 05:00 - 06:00 1400 MW

05-02-2026 06:00 - 07:00 1400 MW

05-02-2026 07:00 - 08:00 1400 MW

05-02-2026 08:00 - 09:00 1400 MW

05-02-2026 09:00 - 10:00 1400 MW

05-02-2026 10:00 - 11:00 1400 MW

05-02-2026 11:00 - 12:00 1400 MW

05-02-2026 12:00 - 13:00 1400 MW

05-02-2026 13:00 - 14:00 1400 MW

05-02-2026 14:00 - 15:00 1400 MW

05-02-2026 15:00 - 16:00 1400 MW

05-02-2026 16:00 - 17:00 1400 MW

05-02-2026 17:00 - 18:00 1400 MW

05-02-2026 18:00 - 19:00 1400 MW

05-02-2026 19:00 - 20:00 1400 MW

05-02-2026 20:00 - 21:00 1400 MW

05-02-2026 21:00 - 22:00 1400 MW

05-02-2026 22:00 - 23:00 1400 MW

05-02-2026 23:00 - 24:00 1400 MW

5. Amount of LTTR remaining after curtailment:

05-02-2026 00:00 - 01:00 956 MW

05-02-2026 01:00 - 02:00 956 MW

05-02-2026 02:00 - 03:00 956 MW

05-02-2026 03:00 - 04:00 956 MW

05-02-2026 04:00 - 05:00 956 MW

05-02-2026 05:00 - 06:00 956 MW

05-02-2026 06:00 - 07:00 956 MW

05-02-2026 07:00 - 08:00 956 MW

05-02-2026 08:00 - 09:00 956 MW

05-02-2026 09:00 - 10:00 956 MW

05-02-2026 10:00 - 11:00 956 MW

05-02-2026 11:00 - 12:00 956 MW

05-02-2026 12:00 - 13:00 956 MW

05-02-2026 13:00 - 14:00 956 MW

05-02-2026 14:00 - 15:00 956 MW

05-02-2026 15:00 - 16:00 956 MW

05-02-2026 16:00 - 17:00 956 MW

05-02-2026 17:00 - 18:00 956 MW

05-02-2026 18:00 - 19:00 956 MW

05-02-2026 19:00 - 20:00 956 MW

05-02-2026 20:00 - 21:00 956 MW

05-02-2026 21:00 - 22:00 956 MW

05-02-2026 22:00 - 23:00 956 MW

05-02-2026 23:00 - 24:00 956 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

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:

04-02-2026 00:00 - 01:00 1396 MW

04-02-2026 01:00 - 02:00 1396 MW

04-02-2026 02:00 - 03:00 1396 MW

04-02-2026 03:00 - 04:00 1396 MW

04-02-2026 04:00 - 05:00 1396 MW

04-02-2026 05:00 - 06:00 1396 MW

04-02-2026 06:00 - 07:00 1396 MW

04-02-2026 07:00 - 08:00 1396 MW

04-02-2026 08:00 - 09:00 1396 MW

04-02-2026 09:00 - 10:00 1396 MW

04-02-2026 10:00 - 11:00 1396 MW

04-02-2026 11:00 - 12:00 1396 MW

04-02-2026 12:00 - 13:00 1396 MW

04-02-2026 13:00 - 14:00 1396 MW

04-02-2026 14:00 - 15:00 1396 MW

04-02-2026 15:00 - 16:00 1396 MW

04-02-2026 16:00 - 17:00 1396 MW

04-02-2026 17:00 - 18:00 1396 MW

04-02-2026 18:00 - 19:00 1396 MW

04-02-2026 19:00 - 20:00 1396 MW

04-02-2026 20:00 - 21:00 1396 MW

04-02-2026 21:00 - 22:00 1396 MW

04-02-2026 22:00 - 23:00 1396 MW

04-02-2026 23:00 - 24:00 1396 MW

5. Amount of LTTR remaining after curtailment:

04-02-2026 00:00 - 01:00 944 MW

04-02-2026 01:00 - 02:00 944 MW

04-02-2026 02:00 - 03:00 944 MW

04-02-2026 03:00 - 04:00 944 MW

04-02-2026 04:00 - 05:00 944 MW

04-02-2026 05:00 - 06:00 944 MW

04-02-2026 06:00 - 07:00 944 MW

04-02-2026 07:00 - 08:00 944 MW

04-02-2026 08:00 - 09:00 944 MW

04-02-2026 09:00 - 10:00 944 MW

04-02-2026 10:00 - 11:00 944 MW

04-02-2026 11:00 - 12:00 944 MW

04-02-2026 12:00 - 13:00 944 MW

04-02-2026 13:00 - 14:00 944 MW

04-02-2026 14:00 - 15:00 944 MW

04-02-2026 15:00 - 16:00 944 MW

04-02-2026 16:00 - 17:00 944 MW

04-02-2026 17:00 - 18:00 944 MW

04-02-2026 18:00 - 19:00 944 MW

04-02-2026 19:00 - 20:00 944 MW

04-02-2026 20:00 - 21:00 944 MW

04-02-2026 21:00 - 22:00 944 MW

04-02-2026 22:00 - 23:00 944 MW

04-02-2026 23:00 - 24:00 944 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

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

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:

04-02-2026 00:00 - 01:00 1400 MW

04-02-2026 01:00 - 02:00 1400 MW

04-02-2026 02:00 - 03:00 1400 MW

04-02-2026 03:00 - 04:00 1400 MW

04-02-2026 04:00 - 05:00 1400 MW

04-02-2026 05:00 - 06:00 1400 MW

04-02-2026 06:00 - 07:00 1400 MW

04-02-2026 07:00 - 08:00 1400 MW

04-02-2026 08:00 - 09:00 1400 MW

04-02-2026 09:00 - 10:00 1400 MW

04-02-2026 10:00 - 11:00 1400 MW

04-02-2026 11:00 - 12:00 1400 MW

04-02-2026 12:00 - 13:00 1400 MW

04-02-2026 13:00 - 14:00 1400 MW

04-02-2026 14:00 - 15:00 1400 MW

04-02-2026 15:00 - 16:00 1400 MW

04-02-2026 16:00 - 17:00 1400 MW

04-02-2026 17:00 - 18:00 1400 MW

04-02-2026 18:00 - 19:00 1400 MW

04-02-2026 19:00 - 20:00 1400 MW

04-02-2026 20:00 - 21:00 1400 MW

04-02-2026 21:00 - 22:00 1400 MW

04-02-2026 22:00 - 23:00 1400 MW

04-02-2026 23:00 - 24:00 1400 MW

5. Amount of LTTR remaining after curtailment:

04-02-2026 00:00 - 01:00 956 MW

04-02-2026 01:00 - 02:00 956 MW

04-02-2026 02:00 - 03:00 956 MW

04-02-2026 03:00 - 04:00 956 MW

04-02-2026 04:00 - 05:00 956 MW

04-02-2026 05:00 - 06:00 956 MW

04-02-2026 06:00 - 07:00 956 MW

04-02-2026 07:00 - 08:00 956 MW

04-02-2026 08:00 - 09:00 956 MW

04-02-2026 09:00 - 10:00 956 MW

04-02-2026 10:00 - 11:00 956 MW

04-02-2026 11:00 - 12:00 956 MW

04-02-2026 12:00 - 13:00 956 MW

04-02-2026 13:00 - 14:00 956 MW

04-02-2026 14:00 - 15:00 956 MW

04-02-2026 15:00 - 16:00 956 MW

04-02-2026 16:00 - 17:00 956 MW

04-02-2026 17:00 - 18:00 956 MW

04-02-2026 18:00 - 19:00 956 MW

04-02-2026 19:00 - 20:00 956 MW

04-02-2026 20:00 - 21:00 956 MW

04-02-2026 21:00 - 22:00 956 MW

04-02-2026 22:00 - 23:00 956 MW

04-02-2026 23:00 - 24:00 956 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

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

We would like to inform all Market Participants about possible delays of data being published in Publication Tool for delivery 02/01/2026

Thanks for your understanding.

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.

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