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.

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

Go to Message Board

Capacity Curtailment on the FR-CH border for delivery period 02-11-2026

Published: 31/10/2026 | 17:19 by JAO
Capacity Curtailment on the IF1-GB-FR border for delivery period 14-11-2026

Published: 31/10/2026 | 16:04 by JAO
Capacity Curtailment on the IF1-FR-GB border for delivery period 14-11-2026

Published: 31/10/2026 | 16:03 by JAO
SDAC_JAO_01: SDAC market coupling 01/11 - Session complete

Published: 31/10/2026 | 13:19 by JAO
[SDAC_ExC_02a]: Delay in Preliminary Market Coupling Results publication

Published: 31/10/2026 | 12:58 by JAO
2026 Auction Calendar update

Published: 31/10/2026 | 09:41 by JAO
Capacity Curtailment on the GR-IT border for delivery period 01-11-2026

Published: 31/10/2026 | 07:39 by JAO

Go to Message board

1. TSO(s)*:

RTE-TSO

2. Identification of affected Long Term Transmission Rights:

FR-CH

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

02-11-2026 00:00 - 01:00 370 MW

02-11-2026 01:00 - 02:00 370 MW

02-11-2026 02:00 - 03:00 370 MW

02-11-2026 03:00 - 04:00 370 MW

02-11-2026 04:00 - 05:00 370 MW

02-11-2026 05:00 - 06:00 370 MW

02-11-2026 06:00 - 07:00 370 MW

02-11-2026 07:00 - 08:00 370 MW

02-11-2026 08:00 - 09:00 370 MW

02-11-2026 09:00 - 10:00 370 MW

02-11-2026 10:00 - 11:00 370 MW

02-11-2026 11:00 - 12:00 370 MW

02-11-2026 12:00 - 13:00 370 MW

02-11-2026 13:00 - 14:00 370 MW

02-11-2026 14:00 - 15:00 370 MW

02-11-2026 15:00 - 16:00 370 MW

02-11-2026 16:00 - 17:00 370 MW

02-11-2026 17:00 - 18:00 370 MW

02-11-2026 18:00 - 19:00 370 MW

02-11-2026 19:00 - 20:00 370 MW

02-11-2026 20:00 - 21:00 370 MW

02-11-2026 21:00 - 22:00 370 MW

02-11-2026 22:00 - 23:00 370 MW

02-11-2026 23:00 - 24:00 370 MW

5. Amount of LTTR remaining after curtailment:

02-11-2026 00:00 - 01:00 0 MW

02-11-2026 01:00 - 02:00 0 MW

02-11-2026 02:00 - 03:00 0 MW

02-11-2026 03:00 - 04:00 0 MW

02-11-2026 04:00 - 05:00 0 MW

02-11-2026 05:00 - 06:00 0 MW

02-11-2026 06:00 - 07:00 0 MW

02-11-2026 07:00 - 08:00 0 MW

02-11-2026 08:00 - 09:00 0 MW

02-11-2026 09:00 - 10:00 0 MW

02-11-2026 10:00 - 11:00 0 MW

02-11-2026 11:00 - 12:00 0 MW

02-11-2026 12:00 - 13:00 0 MW

02-11-2026 13:00 - 14:00 0 MW

02-11-2026 14:00 - 15:00 0 MW

02-11-2026 15:00 - 16:00 0 MW

02-11-2026 16:00 - 17:00 0 MW

02-11-2026 17:00 - 18:00 0 MW

02-11-2026 18:00 - 19:00 0 MW

02-11-2026 19:00 - 20:00 0 MW

02-11-2026 20:00 - 21:00 0 MW

02-11-2026 21:00 - 22:00 0 MW

02-11-2026 22:00 - 23:00 0 MW

02-11-2026 23:00 - 24:00 0 MW

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

02/11/2026

00:00-01:00 Network Security

01:00-02:00 Network Security

02:00-03:00 Network Security

03:00-04:00 Network Security

04:00-05:00 Network Security

05:00-06:00 Network Security

06:00-07:00 Network Security

07:00-08:00 Network Security

08:00-09:00 Network Security

09:00-10:00 Network Security

10:00-11:00 Network Security

11:00-12:00 Network Security

12:00-13:00 Network Security

13:00-14:00 Network Security

14:00-15:00 Network Security

15:00-16:00 Network Security

16:00-17:00 Network Security

17:00-18:00 Network Security

18:00-19:00 Network Security

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

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:

14-11-2026 00:00 - 01:00 1200 MW

14-11-2026 01:00 - 02:00 1200 MW

14-11-2026 02:00 - 03:00 1200 MW

14-11-2026 03:00 - 04:00 1200 MW

14-11-2026 04:00 - 05:00 1200 MW

14-11-2026 05:00 - 06:00 1200 MW

14-11-2026 06:00 - 07:00 1200 MW

14-11-2026 07:00 - 08:00 1200 MW

14-11-2026 08:00 - 09:00 1200 MW

14-11-2026 09:00 - 10:00 1200 MW

14-11-2026 10:00 - 11:00 1200 MW

14-11-2026 11:00 - 12:00 1200 MW

14-11-2026 12:00 - 13:00 1200 MW

14-11-2026 13:00 - 14:00 1200 MW

14-11-2026 14:00 - 15:00 1200 MW

14-11-2026 15:00 - 16:00 1200 MW

14-11-2026 16:00 - 17:00 1200 MW

14-11-2026 17:00 - 18:00 1200 MW

14-11-2026 18:00 - 19:00 1200 MW

14-11-2026 19:00 - 20:00 1200 MW

14-11-2026 20:00 - 21:00 1200 MW

14-11-2026 21:00 - 22:00 1200 MW

14-11-2026 22:00 - 23:00 1200 MW

14-11-2026 23:00 - 24:00 1200 MW

5. Amount of LTTR remaining after curtailment:

14-11-2026 00:00 - 01:00 468 MW

14-11-2026 01:00 - 02:00 468 MW

14-11-2026 02:00 - 03:00 468 MW

14-11-2026 03:00 - 04:00 468 MW

14-11-2026 04:00 - 05:00 468 MW

14-11-2026 05:00 - 06:00 468 MW

14-11-2026 06:00 - 07:00 468 MW

14-11-2026 07:00 - 08:00 468 MW

14-11-2026 08:00 - 09:00 468 MW

14-11-2026 09:00 - 10:00 468 MW

14-11-2026 10:00 - 11:00 468 MW

14-11-2026 11:00 - 12:00 468 MW

14-11-2026 12:00 - 13:00 468 MW

14-11-2026 13:00 - 14:00 468 MW

14-11-2026 14:00 - 15:00 468 MW

14-11-2026 15:00 - 16:00 468 MW

14-11-2026 16:00 - 17:00 468 MW

14-11-2026 17:00 - 18:00 468 MW

14-11-2026 18:00 - 19:00 468 MW

14-11-2026 19:00 - 20:00 468 MW

14-11-2026 20:00 - 21:00 468 MW

14-11-2026 21:00 - 22:00 468 MW

14-11-2026 22:00 - 23:00 468 MW

14-11-2026 23:00 - 24:00 468 MW

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

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

*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:

14-11-2026 00:00 - 01:00 1200 MW

14-11-2026 01:00 - 02:00 1200 MW

14-11-2026 02:00 - 03:00 1200 MW

14-11-2026 03:00 - 04:00 1200 MW

14-11-2026 04:00 - 05:00 1200 MW

14-11-2026 05:00 - 06:00 1200 MW

14-11-2026 06:00 - 07:00 1200 MW

14-11-2026 07:00 - 08:00 1200 MW

14-11-2026 08:00 - 09:00 1200 MW

14-11-2026 09:00 - 10:00 1200 MW

14-11-2026 10:00 - 11:00 1200 MW

14-11-2026 11:00 - 12:00 1200 MW

14-11-2026 12:00 - 13:00 1200 MW

14-11-2026 13:00 - 14:00 1200 MW

14-11-2026 14:00 - 15:00 1200 MW

14-11-2026 15:00 - 16:00 1200 MW

14-11-2026 16:00 - 17:00 1200 MW

14-11-2026 17:00 - 18:00 1200 MW

14-11-2026 18:00 - 19:00 1200 MW

14-11-2026 19:00 - 20:00 1200 MW

14-11-2026 20:00 - 21:00 1200 MW

14-11-2026 21:00 - 22:00 1200 MW

14-11-2026 22:00 - 23:00 1200 MW

14-11-2026 23:00 - 24:00 1200 MW

5. Amount of LTTR remaining after curtailment:

14-11-2026 00:00 - 01:00 462 MW

14-11-2026 01:00 - 02:00 462 MW

14-11-2026 02:00 - 03:00 462 MW

14-11-2026 03:00 - 04:00 462 MW

14-11-2026 04:00 - 05:00 462 MW

14-11-2026 05:00 - 06:00 462 MW

14-11-2026 06:00 - 07:00 462 MW

14-11-2026 07:00 - 08:00 462 MW

14-11-2026 08:00 - 09:00 462 MW

14-11-2026 09:00 - 10:00 462 MW

14-11-2026 10:00 - 11:00 462 MW

14-11-2026 11:00 - 12:00 462 MW

14-11-2026 12:00 - 13:00 462 MW

14-11-2026 13:00 - 14:00 462 MW

14-11-2026 14:00 - 15:00 462 MW

14-11-2026 15:00 - 16:00 462 MW

14-11-2026 16:00 - 17:00 462 MW

14-11-2026 17:00 - 18:00 462 MW

14-11-2026 18:00 - 19:00 462 MW

14-11-2026 19:00 - 20:00 462 MW

14-11-2026 20:00 - 21:00 462 MW

14-11-2026 21:00 - 22:00 462 MW

14-11-2026 22:00 - 23:00 462 MW

14-11-2026 23:00 - 24:00 462 MW

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

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

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

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

Please be aware that the publication of the preliminary SDAC Market Coupling Results is delayed until further notice.

The Market Coupling Results will be published as soon as they are available.

Therefore, if relevant, we advise you to update your shadow bids at JAO eCAT platform before 14:10.

If needed, another delay message will be sent out.

Further information can be found in the Fallback Manual that is published on the websites of NEMO Committee and ENTSO-E.

We would like to inform you that as per TSOs request, the 2026 Auction Calendar has been updated on the corridor EL1.

For more details please refer to the Auction Calendar on our webpage http://www.jao.eu/auctions#/calendar/table to find its latest version.

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:

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

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

01-11-2026 02:00 - 03:00 499 MW

01-11-2026 03:00 - 04:00 499 MW

01-11-2026 04:00 - 05:00 499 MW

01-11-2026 05:00 - 06:00 499 MW

01-11-2026 06:00 - 07:00 499 MW

01-11-2026 07:00 - 08:00 499 MW

01-11-2026 08:00 - 09:00 499 MW

01-11-2026 09:00 - 10:00 499 MW

01-11-2026 10:00 - 11:00 499 MW

01-11-2026 11:00 - 12:00 499 MW

01-11-2026 12:00 - 13:00 499 MW

01-11-2026 13:00 - 14:00 499 MW

01-11-2026 14:00 - 15:00 499 MW

01-11-2026 15:00 - 16:00 499 MW

01-11-2026 16:00 - 17:00 499 MW

01-11-2026 17:00 - 18:00 499 MW

01-11-2026 18:00 - 19:00 499 MW

01-11-2026 19:00 - 20:00 499 MW

01-11-2026 20:00 - 21:00 499 MW

01-11-2026 21:00 - 22:00 499 MW

01-11-2026 22:00 - 23:00 499 MW

01-11-2026 23:00 - 24:00 499 MW

5. Amount of LTTR remaining after curtailment:

01-11-2026 00:00 - 01:00 0 MW

01-11-2026 01:00 - 02:00 0 MW

01-11-2026 02:00 - 03:00 0 MW

01-11-2026 03:00 - 04:00 0 MW

01-11-2026 04:00 - 05:00 0 MW

01-11-2026 05:00 - 06:00 0 MW

01-11-2026 06:00 - 07:00 0 MW

01-11-2026 07:00 - 08:00 0 MW

01-11-2026 08:00 - 09:00 0 MW

01-11-2026 09:00 - 10:00 0 MW

01-11-2026 10:00 - 11:00 0 MW

01-11-2026 11:00 - 12:00 0 MW

01-11-2026 12:00 - 13:00 0 MW

01-11-2026 13:00 - 14:00 0 MW

01-11-2026 14:00 - 15:00 0 MW

01-11-2026 15:00 - 16:00 0 MW

01-11-2026 16:00 - 17:00 0 MW

01-11-2026 17:00 - 18:00 0 MW

01-11-2026 18:00 - 19:00 0 MW

01-11-2026 19:00 - 20:00 0 MW

01-11-2026 20:00 - 21:00 0 MW

01-11-2026 21:00 - 22:00 0 MW

01-11-2026 22:00 - 23:00 0 MW

01-11-2026 23:00 - 24:00 0 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.

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

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