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 EE-LV border for delivery period 12-05-2026

Published: 11/05/2026 | 09:56 by JAO
Delay in the publication of data for IDA1, IDA2 for BD 11/05/2026

Published: 10/05/2026 | 22:59 by JAO
Capacity Curtailment on the ES-FR border for delivery period 12-05-2026

Published: 10/05/2026 | 22:31 by JAO
Capacity Curtailment on the IF1-GB-FR border for delivery period 24-05-2026

Published: 10/05/2026 | 14:40 by JAO
Capacity Curtailment on the IF1-FR-GB border for delivery period 24-05-2026

Published: 10/05/2026 | 14:39 by JAO
Capacity Curtailment on the ME-IT border for delivery period 12-05-2026

Published: 10/05/2026 | 14:31 by JAO
Delay in the publication of CI data of IDA3 for BD 10/05/2026

Published: 10/05/2026 | 12:38 by JAO

Go to Message board

1. TSO(s)*:

AST

2. Identification of affected Long Term Transmission Rights:

EE-LV

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

12-05-2026 11:00 - 12:00 440 MW

12-05-2026 12:00 - 13:00 440 MW

12-05-2026 13:00 - 14:00 440 MW

12-05-2026 14:00 - 15:00 440 MW

12-05-2026 15:00 - 16:00 440 MW

5. Amount of LTTR remaining after curtailment:

12-05-2026 11:00 - 12:00 402 MW

12-05-2026 12:00 - 13:00 402 MW

12-05-2026 13:00 - 14:00 402 MW

12-05-2026 14:00 - 15:00 402 MW

12-05-2026 15:00 - 16:00 405 MW

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

Nord Pool - UMM Platform, as well as the capacity already allocated on the Baltic Balancing Market for balancing capacity sharing athttps://baltic.transparency-dashboard.eu/node/108

7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s)*?

There is no alternative to the curtailment of the affected LTTRs.

Please note that there is a delay in publication of IDA1, IDA2 Congestion Income data for Core IDCCR and IBWT PUTO for business day 11/05/2026.

Thank you for your understanding.

1. TSO(s)*:

RTE-TSO

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:

12-05-2026 11:00 - 12:00 680 MW

12-05-2026 12:00 - 13:00 680 MW

12-05-2026 13:00 - 14:00 680 MW

12-05-2026 14:00 - 15:00 680 MW

12-05-2026 15:00 - 16:00 680 MW

12-05-2026 16:00 - 17:00 680 MW

5. Amount of LTTR remaining after curtailment:

12-05-2026 11:00 - 12:00 481 MW

12-05-2026 12:00 - 13:00 481 MW

12-05-2026 13:00 - 14:00 481 MW

12-05-2026 14:00 - 15:00 481 MW

12-05-2026 15:00 - 16:00 481 MW

12-05-2026 16:00 - 17:00 481 MW

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

12/05/2026

11:00-12:00 BRAUD-PREGUILLAC 2

12:00-13:00 BRAUD-PREGUILLAC 2

13:00-14:00 BRAUD-PREGUILLAC 2

14:00-15:00 BRAUD-PREGUILLAC 2

15:00-16:00 BRAUD-PREGUILLAC 2

16:00-17:00 BRAUD-PREGUILLAC 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

*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-GB-FR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

24-05-2026 00:00 - 01:00 1889 MW

24-05-2026 01:00 - 02:00 1889 MW

24-05-2026 02:00 - 03:00 1889 MW

24-05-2026 03:00 - 04:00 1889 MW

24-05-2026 04:00 - 05:00 1889 MW

24-05-2026 05:00 - 06:00 1889 MW

24-05-2026 06:00 - 07:00 1889 MW

24-05-2026 07:00 - 08:00 1889 MW

24-05-2026 08:00 - 09:00 1889 MW

24-05-2026 09:00 - 10:00 1889 MW

24-05-2026 10:00 - 11:00 1889 MW

24-05-2026 11:00 - 12:00 1889 MW

24-05-2026 12:00 - 13:00 1889 MW

24-05-2026 13:00 - 14:00 1889 MW

24-05-2026 14:00 - 15:00 1889 MW

24-05-2026 15:00 - 16:00 1889 MW

24-05-2026 16:00 - 17:00 1889 MW

24-05-2026 17:00 - 18:00 1889 MW

24-05-2026 18:00 - 19:00 1889 MW

24-05-2026 19:00 - 20:00 1889 MW

24-05-2026 20:00 - 21:00 1889 MW

24-05-2026 21:00 - 22:00 1889 MW

24-05-2026 22:00 - 23:00 1889 MW

24-05-2026 23:00 - 24:00 1889 MW

5. Amount of LTTR remaining after curtailment:

24-05-2026 00:00 - 01:00 1416 MW

24-05-2026 01:00 - 02:00 1416 MW

24-05-2026 02:00 - 03:00 1416 MW

24-05-2026 03:00 - 04:00 1416 MW

24-05-2026 04:00 - 05:00 1416 MW

24-05-2026 05:00 - 06:00 1416 MW

24-05-2026 06:00 - 07:00 1416 MW

24-05-2026 07:00 - 08:00 1416 MW

24-05-2026 08:00 - 09:00 1416 MW

24-05-2026 09:00 - 10:00 1416 MW

24-05-2026 10:00 - 11:00 1416 MW

24-05-2026 11:00 - 12:00 1416 MW

24-05-2026 12:00 - 13:00 1416 MW

24-05-2026 13:00 - 14:00 1416 MW

24-05-2026 14:00 - 15:00 1416 MW

24-05-2026 15:00 - 16:00 1416 MW

24-05-2026 16:00 - 17:00 1416 MW

24-05-2026 17:00 - 18:00 1416 MW

24-05-2026 18:00 - 19:00 1416 MW

24-05-2026 19:00 - 20:00 1416 MW

24-05-2026 20:00 - 21:00 1416 MW

24-05-2026 21:00 - 22:00 1416 MW

24-05-2026 22:00 - 23:00 1416 MW

24-05-2026 23:00 - 24:00 1416 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:

24-05-2026 00:00 - 01:00 1900 MW

24-05-2026 01:00 - 02:00 1900 MW

24-05-2026 02:00 - 03:00 1900 MW

24-05-2026 03:00 - 04:00 1900 MW

24-05-2026 04:00 - 05:00 1900 MW

24-05-2026 05:00 - 06:00 1900 MW

24-05-2026 06:00 - 07:00 1900 MW

24-05-2026 07:00 - 08:00 1900 MW

24-05-2026 08:00 - 09:00 1900 MW

24-05-2026 09:00 - 10:00 1900 MW

24-05-2026 10:00 - 11:00 1900 MW

24-05-2026 11:00 - 12:00 1900 MW

24-05-2026 12:00 - 13:00 1900 MW

24-05-2026 13:00 - 14:00 1900 MW

24-05-2026 14:00 - 15:00 1900 MW

24-05-2026 15:00 - 16:00 1900 MW

24-05-2026 16:00 - 17:00 1900 MW

24-05-2026 17:00 - 18:00 1900 MW

24-05-2026 18:00 - 19:00 1900 MW

24-05-2026 19:00 - 20:00 1900 MW

24-05-2026 20:00 - 21:00 1900 MW

24-05-2026 21:00 - 22:00 1900 MW

24-05-2026 22:00 - 23:00 1900 MW

24-05-2026 23:00 - 24:00 1900 MW

5. Amount of LTTR remaining after curtailment:

24-05-2026 00:00 - 01:00 1448 MW

24-05-2026 01:00 - 02:00 1448 MW

24-05-2026 02:00 - 03:00 1448 MW

24-05-2026 03:00 - 04:00 1448 MW

24-05-2026 04:00 - 05:00 1448 MW

24-05-2026 05:00 - 06:00 1448 MW

24-05-2026 06:00 - 07:00 1448 MW

24-05-2026 07:00 - 08:00 1448 MW

24-05-2026 08:00 - 09:00 1448 MW

24-05-2026 09:00 - 10:00 1448 MW

24-05-2026 10:00 - 11:00 1448 MW

24-05-2026 11:00 - 12:00 1448 MW

24-05-2026 12:00 - 13:00 1448 MW

24-05-2026 13:00 - 14:00 1448 MW

24-05-2026 14:00 - 15:00 1448 MW

24-05-2026 15:00 - 16:00 1448 MW

24-05-2026 16:00 - 17:00 1448 MW

24-05-2026 17:00 - 18:00 1448 MW

24-05-2026 18:00 - 19:00 1448 MW

24-05-2026 19:00 - 20:00 1448 MW

24-05-2026 20:00 - 21:00 1448 MW

24-05-2026 21:00 - 22:00 1448 MW

24-05-2026 22:00 - 23:00 1448 MW

24-05-2026 23:00 - 24:00 1448 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)*:

CGES

2. Identification of affected Long Term Transmission Rights:

ME-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

12-05-2026 09:00 - 10:00 131 MW

12-05-2026 10:00 - 11:00 131 MW

12-05-2026 11:00 - 12:00 131 MW

12-05-2026 12:00 - 13:00 131 MW

12-05-2026 13:00 - 14:00 131 MW

12-05-2026 14:00 - 15:00 131 MW

12-05-2026 15:00 - 16:00 131 MW

12-05-2026 16:00 - 17:00 131 MW

5. Amount of LTTR remaining after curtailment:

12-05-2026 09:00 - 10:00 0 MW

12-05-2026 10:00 - 11:00 0 MW

12-05-2026 11:00 - 12:00 0 MW

12-05-2026 12:00 - 13:00 0 MW

12-05-2026 13:00 - 14:00 0 MW

12-05-2026 14:00 - 15:00 0 MW

12-05-2026 15:00 - 16:00 0 MW

12-05-2026 16:00 - 17:00 0 MW

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

HVDC Monita

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

Please note that there is a delay in publication of IDA3 Congestion Income data for business day 10/05/2026.

Thank you 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