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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 IF1-GB-FR border for delivery period 08-04-2026

Published: 25/03/2026 | 16:52 by JAO
Capacity Curtailment on the IF1-FR-GB border for delivery period 08-04-2026

Published: 25/03/2026 | 16:51 by JAO
Capacity Curtailment on the IF1-FR-GB border for delivery period 05-04-2026 - 07-04-2026

Published: 25/03/2026 | 14:38 by JAO
Capacity Curtailment on the IF1-GB-FR border for delivery period 01-04-2026 - 07-04-2026

Published: 25/03/2026 | 14:35 by JAO
Capacity Curtailment on the IF1-FR-GB border for delivery period 01-04-2026 - 01-05-2026

Published: 25/03/2026 | 14:31 by JAO
SDAC_JAO_01: SDAC market coupling 25/03 - Session complete

Published: 25/03/2026 | 13:17 by JAO
[SDAC_ExC_02]: Delay in Market Coupling Results publication

Published: 25/03/2026 | 13:15 by JAO

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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:

08-04-2026 08:00 - 09:00 996 MW

08-04-2026 09:00 - 10:00 996 MW

08-04-2026 10:00 - 11:00 996 MW

08-04-2026 11:00 - 12:00 996 MW

08-04-2026 12:00 - 13:00 996 MW

08-04-2026 13:00 - 14:00 996 MW

08-04-2026 14:00 - 15:00 996 MW

08-04-2026 15:00 - 16:00 996 MW

08-04-2026 16:00 - 17:00 996 MW

08-04-2026 17:00 - 18:00 996 MW

08-04-2026 18:00 - 19:00 996 MW

08-04-2026 19:00 - 20:00 996 MW

08-04-2026 20:00 - 21:00 996 MW

08-04-2026 21:00 - 22:00 996 MW

08-04-2026 22:00 - 23:00 996 MW

08-04-2026 23:00 - 24:00 996 MW

5. Amount of LTTR remaining after curtailment:

08-04-2026 08:00 - 09:00 480 MW

08-04-2026 09:00 - 10:00 480 MW

08-04-2026 10:00 - 11:00 480 MW

08-04-2026 11:00 - 12:00 480 MW

08-04-2026 12:00 - 13:00 480 MW

08-04-2026 13:00 - 14:00 480 MW

08-04-2026 14:00 - 15:00 480 MW

08-04-2026 15:00 - 16:00 480 MW

08-04-2026 16:00 - 17:00 480 MW

08-04-2026 17:00 - 18:00 480 MW

08-04-2026 18:00 - 19:00 480 MW

08-04-2026 19:00 - 20:00 480 MW

08-04-2026 20:00 - 21:00 480 MW

08-04-2026 21:00 - 22:00 480 MW

08-04-2026 22:00 - 23:00 480 MW

08-04-2026 23:00 - 24:00 480 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

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:

08-04-2026 08:00 - 09:00 993 MW

08-04-2026 09:00 - 10:00 993 MW

08-04-2026 10:00 - 11:00 993 MW

08-04-2026 11:00 - 12:00 993 MW

08-04-2026 12:00 - 13:00 993 MW

08-04-2026 13:00 - 14:00 993 MW

08-04-2026 14:00 - 15:00 993 MW

08-04-2026 15:00 - 16:00 993 MW

08-04-2026 16:00 - 17:00 993 MW

08-04-2026 17:00 - 18:00 993 MW

08-04-2026 18:00 - 19:00 993 MW

08-04-2026 19:00 - 20:00 993 MW

08-04-2026 20:00 - 21:00 993 MW

08-04-2026 21:00 - 22:00 993 MW

08-04-2026 22:00 - 23:00 993 MW

08-04-2026 23:00 - 24:00 993 MW

5. Amount of LTTR remaining after curtailment:

08-04-2026 08:00 - 09:00 482 MW

08-04-2026 09:00 - 10:00 482 MW

08-04-2026 10:00 - 11:00 482 MW

08-04-2026 11:00 - 12:00 482 MW

08-04-2026 12:00 - 13:00 482 MW

08-04-2026 13:00 - 14:00 482 MW

08-04-2026 14:00 - 15:00 482 MW

08-04-2026 15:00 - 16:00 482 MW

08-04-2026 16:00 - 17:00 482 MW

08-04-2026 17:00 - 18:00 482 MW

08-04-2026 18:00 - 19:00 482 MW

08-04-2026 19:00 - 20:00 482 MW

08-04-2026 20:00 - 21:00 482 MW

08-04-2026 21:00 - 22:00 482 MW

08-04-2026 22:00 - 23:00 482 MW

08-04-2026 23:00 - 24:00 482 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

1. TSO(s)*:

National Grid Interconnectors Limited (NGIC) and RTE EDF Transport S.A. (RTE)

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:

05-04-2026 00:00 - 01:00 1750 MW

05-04-2026 01:00 - 02:00 1750 MW

05-04-2026 02:00 - 03:00 1750 MW

05-04-2026 03:00 - 04:00 1750 MW

05-04-2026 04:00 - 05:00 1750 MW

05-04-2026 05:00 - 06:00 1750 MW

05-04-2026 06:00 - 07:00 1750 MW

05-04-2026 07:00 - 08:00 1750 MW

05-04-2026 08:00 - 09:00 1750 MW

05-04-2026 09:00 - 10:00 1750 MW

05-04-2026 10:00 - 11:00 1750 MW

05-04-2026 11:00 - 12:00 1750 MW

05-04-2026 12:00 - 13:00 1750 MW

05-04-2026 13:00 - 14:00 1750 MW

05-04-2026 14:00 - 15:00 1750 MW

05-04-2026 15:00 - 16:00 1750 MW

05-04-2026 16:00 - 17:00 1750 MW

05-04-2026 17:00 - 18:00 1750 MW

05-04-2026 18:00 - 19:00 1750 MW

05-04-2026 19:00 - 20:00 1750 MW

05-04-2026 20:00 - 21:00 1750 MW

05-04-2026 21:00 - 22:00 1750 MW

05-04-2026 22:00 - 23:00 1750 MW

05-04-2026 23:00 - 24:00 1750 MW

5. Amount of LTTR remaining after curtailment:

05-04-2026 00:00 - 01:00 1464 MW

05-04-2026 01:00 - 02:00 1464 MW

05-04-2026 02:00 - 03:00 1464 MW

05-04-2026 03:00 - 04:00 1464 MW

05-04-2026 04:00 - 05:00 1464 MW

05-04-2026 05:00 - 06:00 1464 MW

05-04-2026 06:00 - 07:00 1464 MW

05-04-2026 07:00 - 08:00 1464 MW

05-04-2026 08:00 - 09:00 1464 MW

05-04-2026 09:00 - 10:00 1464 MW

05-04-2026 10:00 - 11:00 1464 MW

05-04-2026 11:00 - 12:00 1464 MW

05-04-2026 12:00 - 13:00 1464 MW

05-04-2026 13:00 - 14:00 1464 MW

05-04-2026 14:00 - 15:00 1464 MW

05-04-2026 15:00 - 16:00 1464 MW

05-04-2026 16:00 - 17:00 1464 MW

05-04-2026 17:00 - 18:00 1464 MW

05-04-2026 18:00 - 19:00 1464 MW

05-04-2026 19:00 - 20:00 1464 MW

05-04-2026 20:00 - 21:00 1464 MW

05-04-2026 21:00 - 22:00 1464 MW

05-04-2026 22:00 - 23:00 1464 MW

05-04-2026 23:00 - 24:00 1464 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

1. TSO(s)*:

National Grid Interconnectors Limited (NGIC) and RTE EDF Transport S.A. (RTE)

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:

01-04-2026 00:00 - 01:00 1738 MW

01-04-2026 01:00 - 02:00 1738 MW

01-04-2026 02:00 - 03:00 1738 MW

01-04-2026 03:00 - 04:00 1738 MW

01-04-2026 04:00 - 05:00 1738 MW

01-04-2026 05:00 - 06:00 1738 MW

01-04-2026 06:00 - 07:00 1738 MW

01-04-2026 07:00 - 08:00 1738 MW

01-04-2026 08:00 - 09:00 1738 MW

01-04-2026 09:00 - 10:00 1738 MW

01-04-2026 10:00 - 11:00 1738 MW

01-04-2026 11:00 - 12:00 1738 MW

01-04-2026 12:00 - 13:00 1738 MW

01-04-2026 13:00 - 14:00 1738 MW

01-04-2026 14:00 - 15:00 1738 MW

01-04-2026 15:00 - 16:00 1738 MW

01-04-2026 16:00 - 17:00 1738 MW

01-04-2026 17:00 - 18:00 1738 MW

01-04-2026 18:00 - 19:00 1738 MW

01-04-2026 19:00 - 20:00 1738 MW

01-04-2026 20:00 - 21:00 1738 MW

01-04-2026 21:00 - 22:00 1738 MW

01-04-2026 22:00 - 23:00 1738 MW

01-04-2026 23:00 - 24:00 1738 MW

5. Amount of LTTR remaining after curtailment:

01-04-2026 00:00 - 01:00 1435 MW

01-04-2026 01:00 - 02:00 1435 MW

01-04-2026 02:00 - 03:00 1435 MW

01-04-2026 03:00 - 04:00 1435 MW

01-04-2026 04:00 - 05:00 1435 MW

01-04-2026 05:00 - 06:00 1435 MW

01-04-2026 06:00 - 07:00 1435 MW

01-04-2026 07:00 - 08:00 1435 MW

01-04-2026 08:00 - 09:00 1435 MW

01-04-2026 09:00 - 10:00 1435 MW

01-04-2026 10:00 - 11:00 1435 MW

01-04-2026 11:00 - 12:00 1435 MW

01-04-2026 12:00 - 13:00 1435 MW

01-04-2026 13:00 - 14:00 1435 MW

01-04-2026 14:00 - 15:00 1435 MW

01-04-2026 15:00 - 16:00 1435 MW

01-04-2026 16:00 - 17:00 1435 MW

01-04-2026 17:00 - 18:00 1435 MW

01-04-2026 18:00 - 19:00 1435 MW

01-04-2026 19:00 - 20:00 1435 MW

01-04-2026 20:00 - 21:00 1435 MW

01-04-2026 21:00 - 22:00 1435 MW

01-04-2026 22:00 - 23:00 1435 MW

01-04-2026 23:00 - 24:00 1435 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

1. TSO(s)*:

National Grid Interconnectors Limited (NGIC) and RTE EDF Transport S.A. (RTE)

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:

01-04-2026 00:00 - 01:00 1750 MW

01-04-2026 01:00 - 02:00 1750 MW

01-04-2026 02:00 - 03:00 1750 MW

01-04-2026 03:00 - 04:00 1750 MW

01-04-2026 04:00 - 05:00 1750 MW

01-04-2026 05:00 - 06:00 1750 MW

01-04-2026 06:00 - 07:00 1750 MW

01-04-2026 07:00 - 08:00 1750 MW

01-04-2026 08:00 - 09:00 1750 MW

01-04-2026 09:00 - 10:00 1750 MW

01-04-2026 10:00 - 11:00 1750 MW

01-04-2026 11:00 - 12:00 1750 MW

01-04-2026 12:00 - 13:00 1750 MW

01-04-2026 13:00 - 14:00 1750 MW

01-04-2026 14:00 - 15:00 1750 MW

01-04-2026 15:00 - 16:00 1750 MW

01-04-2026 16:00 - 17:00 1750 MW

01-04-2026 17:00 - 18:00 1750 MW

01-04-2026 18:00 - 19:00 1750 MW

01-04-2026 19:00 - 20:00 1750 MW

01-04-2026 20:00 - 21:00 1750 MW

01-04-2026 21:00 - 22:00 1750 MW

01-04-2026 22:00 - 23:00 1750 MW

01-04-2026 23:00 - 24:00 1750 MW

5. Amount of LTTR remaining after curtailment:

01-04-2026 00:00 - 01:00 1464 MW

01-04-2026 01:00 - 02:00 1464 MW

01-04-2026 02:00 - 03:00 1464 MW

01-04-2026 03:00 - 04:00 1464 MW

01-04-2026 04:00 - 05:00 1464 MW

01-04-2026 05:00 - 06:00 1464 MW

01-04-2026 06:00 - 07:00 1464 MW

01-04-2026 07:00 - 08:00 1464 MW

01-04-2026 08:00 - 09:00 1464 MW

01-04-2026 09:00 - 10:00 1464 MW

01-04-2026 10:00 - 11:00 1464 MW

01-04-2026 11:00 - 12:00 1464 MW

01-04-2026 12:00 - 13:00 1464 MW

01-04-2026 13:00 - 14:00 1464 MW

01-04-2026 14:00 - 15:00 1464 MW

01-04-2026 15:00 - 16:00 1464 MW

01-04-2026 16:00 - 17:00 1464 MW

01-04-2026 17:00 - 18:00 1464 MW

01-04-2026 18:00 - 19:00 1464 MW

01-04-2026 19:00 - 20:00 1464 MW

01-04-2026 20:00 - 21:00 1464 MW

01-04-2026 21:00 - 22:00 1464 MW

01-04-2026 22:00 - 23:00 1464 MW

01-04-2026 23:00 - 24:00 1464 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

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

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.

If needed, another delay message will be sent out.

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