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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

470+

Registered Market Participants
20k+

Auctions per year
100 %

Auction Tool Availability
95

Employees
50

TSOs serviced

Latest market messages

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Publication of IDCC (b) data for Business Day 15/04/2025

Published: 14/04/2025 | 23:24 by JAO
Capacity Curtailment on the FR-CH border for delivery period 16-04-2025

Published: 14/04/2025 | 17:20 by JAO
Delay in the publication of IBWT ID3 Congestion Income in Publication Tool BD 14/04/2025

Published: 14/04/2025 | 11:06 by JAO
Capacity Curtailment on the EE-LV border for delivery period 15-04-2025

Published: 14/04/2025 | 10:38 by JAO
Banking Holiday: Friday 18-04-2025 and Monday 21-04-2025 – Impact on Transactions and Credit Limit Updates

Published: 14/04/2025 | 08:26 by JAO
Capacity Curtailment on the IT-GR border for delivery period 15-04-2025

Published: 14/04/2025 | 08:06 by JAO
Capacity Curtailment on the GR-IT border for delivery period 15-04-2025

Published: 14/04/2025 | 07:56 by JAO

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Dear Market Participants,

We would like to inform you that missing data for the delivery date of 15/04/2025, for the Core ID CCR IDCC (b) will be published with a delay.

Thank you for your understanding.

Best regards,

JAO Operations Team

1. TSO(s)*:

RTE, SWISSGRID

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:

16-04-2025 00:00 - 01:00 369 MW

16-04-2025 01:00 - 02:00 369 MW

16-04-2025 02:00 - 03:00 369 MW

16-04-2025 03:00 - 04:00 369 MW

16-04-2025 04:00 - 05:00 369 MW

16-04-2025 05:00 - 06:00 369 MW

16-04-2025 06:00 - 07:00 369 MW

16-04-2025 07:00 - 08:00 369 MW

16-04-2025 08:00 - 09:00 369 MW

16-04-2025 09:00 - 10:00 369 MW

16-04-2025 10:00 - 11:00 369 MW

16-04-2025 11:00 - 12:00 369 MW

16-04-2025 12:00 - 13:00 369 MW

16-04-2025 13:00 - 14:00 369 MW

16-04-2025 14:00 - 15:00 369 MW

16-04-2025 15:00 - 16:00 369 MW

16-04-2025 16:00 - 17:00 369 MW

16-04-2025 17:00 - 18:00 369 MW

16-04-2025 18:00 - 19:00 369 MW

16-04-2025 19:00 - 20:00 369 MW

16-04-2025 20:00 - 21:00 369 MW

16-04-2025 21:00 - 22:00 369 MW

16-04-2025 22:00 - 23:00 369 MW

16-04-2025 23:00 - 24:00 369 MW

5. Amount of LTTR remaining after curtailment:

16-04-2025 00:00 - 01:00 0 MW

16-04-2025 01:00 - 02:00 0 MW

16-04-2025 02:00 - 03:00 0 MW

16-04-2025 03:00 - 04:00 0 MW

16-04-2025 04:00 - 05:00 0 MW

16-04-2025 05:00 - 06:00 0 MW

16-04-2025 06:00 - 07:00 0 MW

16-04-2025 07:00 - 08:00 0 MW

16-04-2025 08:00 - 09:00 0 MW

16-04-2025 09:00 - 10:00 0 MW

16-04-2025 10:00 - 11:00 0 MW

16-04-2025 11:00 - 12:00 0 MW

16-04-2025 12:00 - 13:00 0 MW

16-04-2025 13:00 - 14:00 0 MW

16-04-2025 14:00 - 15:00 0 MW

16-04-2025 15:00 - 16:00 0 MW

16-04-2025 16:00 - 17:00 0 MW

16-04-2025 17:00 - 18:00 0 MW

16-04-2025 18:00 - 19:00 0 MW

16-04-2025 19:00 - 20:00 0 MW

16-04-2025 20:00 - 21:00 0 MW

16-04-2025 21:00 - 22:00 0 MW

16-04-2025 22:00 - 23:00 0 MW

16-04-2025 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*:

16/04/2025

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

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

Dear all,

Please be informed that the publication for IDA3 on IBWT, for 14/04/2025, is delayed in the Publication Tool.

Kind regards,

JAO Operations Team

1. TSO(s)*:

ELERING

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:

15-04-2025 00:00 - 01:00 499 MW

15-04-2025 01:00 - 02:00 499 MW

15-04-2025 02:00 - 03:00 499 MW

15-04-2025 03:00 - 04:00 499 MW

15-04-2025 04:00 - 05:00 499 MW

15-04-2025 05:00 - 06:00 499 MW

15-04-2025 06:00 - 07:00 499 MW

15-04-2025 07:00 - 08:00 499 MW

15-04-2025 08:00 - 09:00 499 MW

15-04-2025 09:00 - 10:00 499 MW

15-04-2025 10:00 - 11:00 499 MW

15-04-2025 11:00 - 12:00 499 MW

15-04-2025 12:00 - 13:00 499 MW

15-04-2025 13:00 - 14:00 499 MW

15-04-2025 14:00 - 15:00 499 MW

15-04-2025 15:00 - 16:00 499 MW

15-04-2025 16:00 - 17:00 499 MW

15-04-2025 17:00 - 18:00 499 MW

15-04-2025 18:00 - 19:00 499 MW

15-04-2025 19:00 - 20:00 499 MW

15-04-2025 20:00 - 21:00 499 MW

15-04-2025 21:00 - 22:00 499 MW

15-04-2025 22:00 - 23:00 499 MW

15-04-2025 23:00 - 24:00 499 MW

5. Amount of LTTR remaining after curtailment:

15-04-2025 00:00 - 01:00 204 MW

15-04-2025 01:00 - 02:00 198 MW

15-04-2025 02:00 - 03:00 199 MW

15-04-2025 03:00 - 04:00 198 MW

15-04-2025 04:00 - 05:00 194 MW

15-04-2025 05:00 - 06:00 197 MW

15-04-2025 06:00 - 07:00 197 MW

15-04-2025 07:00 - 08:00 199 MW

15-04-2025 08:00 - 09:00 200 MW

15-04-2025 09:00 - 10:00 223 MW

15-04-2025 10:00 - 11:00 223 MW

15-04-2025 11:00 - 12:00 223 MW

15-04-2025 12:00 - 13:00 223 MW

15-04-2025 13:00 - 14:00 223 MW

15-04-2025 14:00 - 15:00 220 MW

15-04-2025 15:00 - 16:00 223 MW

15-04-2025 16:00 - 17:00 221 MW

15-04-2025 17:00 - 18:00 221 MW

15-04-2025 18:00 - 19:00 218 MW

15-04-2025 19:00 - 20:00 218 MW

15-04-2025 20:00 - 21:00 221 MW

15-04-2025 21:00 - 22:00 223 MW

15-04-2025 22:00 - 23:00 223 MW

15-04-2025 23:00 - 24:00 223 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

Dear Market Participant,

Please be advised that Friday 18-04-2025 and Monday 21-04-2025 are banking holiday in Luxembourg [Good Friday and Easter Monday]: http://www.jao.eu/resource-center/public-holidays

Please note that Friday 18-04-2025 is only a bank holiday and applies solely to the banking sector, JAO will continue to operate as usual, like any other week day, while Monday 21-04-2025 is a public holiday.

Please note that any credit limit update resulting from transactions on your ING business account will not be reflected until Tuesday, 22-04-2025 (evening at around 8PM).

Additionally, transactions initiated after ING Luxembourg's cutoff time on Thursday, 17-04-2025 will have a value date of Tuesday, 22-04-2025.

We kindly recommend that you adjust your financial schedule accordingly to accommodate these changes.

Best regards,

JAO Operations Team

1. TSO(s)*:

TERNA, ADMIE

2. Identification of affected Long Term Transmission Rights:

IT-GR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

15-04-2025 00:00 - 01:00 50 MW

15-04-2025 01:00 - 02:00 50 MW

15-04-2025 02:00 - 03:00 50 MW

15-04-2025 03:00 - 04:00 50 MW

15-04-2025 04:00 - 05:00 50 MW

15-04-2025 05:00 - 06:00 50 MW

15-04-2025 06:00 - 07:00 50 MW

15-04-2025 07:00 - 08:00 50 MW

15-04-2025 08:00 - 09:00 50 MW

15-04-2025 09:00 - 10:00 50 MW

15-04-2025 10:00 - 11:00 50 MW

15-04-2025 11:00 - 12:00 50 MW

15-04-2025 12:00 - 13:00 50 MW

15-04-2025 13:00 - 14:00 50 MW

15-04-2025 14:00 - 15:00 50 MW

15-04-2025 15:00 - 16:00 50 MW

15-04-2025 16:00 - 17:00 50 MW

15-04-2025 17:00 - 18:00 50 MW

15-04-2025 18:00 - 19:00 50 MW

15-04-2025 19:00 - 20:00 50 MW

15-04-2025 20:00 - 21:00 50 MW

15-04-2025 21:00 - 22:00 50 MW

15-04-2025 22:00 - 23:00 50 MW

15-04-2025 23:00 - 24:00 50 MW

5. Amount of LTTR remaining after curtailment:

15-04-2025 00:00 - 01:00 0 MW

15-04-2025 01:00 - 02:00 0 MW

15-04-2025 02:00 - 03:00 0 MW

15-04-2025 03:00 - 04:00 0 MW

15-04-2025 04:00 - 05:00 0 MW

15-04-2025 05:00 - 06:00 0 MW

15-04-2025 06:00 - 07:00 0 MW

15-04-2025 07:00 - 08:00 0 MW

15-04-2025 08:00 - 09:00 0 MW

15-04-2025 09:00 - 10:00 0 MW

15-04-2025 10:00 - 11:00 0 MW

15-04-2025 11:00 - 12:00 0 MW

15-04-2025 12:00 - 13:00 0 MW

15-04-2025 13:00 - 14:00 0 MW

15-04-2025 14:00 - 15:00 0 MW

15-04-2025 15:00 - 16:00 0 MW

15-04-2025 16:00 - 17:00 0 MW

15-04-2025 17:00 - 18:00 0 MW

15-04-2025 18:00 - 19:00 0 MW

15-04-2025 19:00 - 20:00 0 MW

15-04-2025 20:00 - 21:00 0 MW

15-04-2025 21:00 - 22:00 0 MW

15-04-2025 22:00 - 23:00 0 MW

15-04-2025 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*:

HVDC cable ARACTHOS – GALATINA

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

Not Applicable

1. TSO(s)*:

TERNA, ADMIE

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:

15-04-2025 00:00 - 01:00 50 MW

15-04-2025 01:00 - 02:00 50 MW

15-04-2025 02:00 - 03:00 50 MW

15-04-2025 03:00 - 04:00 50 MW

15-04-2025 04:00 - 05:00 50 MW

15-04-2025 05:00 - 06:00 50 MW

15-04-2025 06:00 - 07:00 50 MW

15-04-2025 07:00 - 08:00 50 MW

15-04-2025 08:00 - 09:00 50 MW

15-04-2025 09:00 - 10:00 50 MW

15-04-2025 10:00 - 11:00 50 MW

15-04-2025 11:00 - 12:00 50 MW

15-04-2025 12:00 - 13:00 50 MW

15-04-2025 13:00 - 14:00 50 MW

15-04-2025 14:00 - 15:00 50 MW

15-04-2025 15:00 - 16:00 50 MW

15-04-2025 16:00 - 17:00 50 MW

15-04-2025 17:00 - 18:00 50 MW

15-04-2025 18:00 - 19:00 50 MW

15-04-2025 19:00 - 20:00 50 MW

15-04-2025 20:00 - 21:00 50 MW

15-04-2025 21:00 - 22:00 50 MW

15-04-2025 22:00 - 23:00 50 MW

15-04-2025 23:00 - 24:00 50 MW

5. Amount of LTTR remaining after curtailment:

15-04-2025 00:00 - 01:00 0 MW

15-04-2025 01:00 - 02:00 0 MW

15-04-2025 02:00 - 03:00 0 MW

15-04-2025 03:00 - 04:00 0 MW

15-04-2025 04:00 - 05:00 0 MW

15-04-2025 05:00 - 06:00 0 MW

15-04-2025 06:00 - 07:00 0 MW

15-04-2025 07:00 - 08:00 0 MW

15-04-2025 08:00 - 09:00 0 MW

15-04-2025 09:00 - 10:00 0 MW

15-04-2025 10:00 - 11:00 0 MW

15-04-2025 11:00 - 12:00 0 MW

15-04-2025 12:00 - 13:00 0 MW

15-04-2025 13:00 - 14:00 0 MW

15-04-2025 14:00 - 15:00 0 MW

15-04-2025 15:00 - 16:00 0 MW

15-04-2025 16:00 - 17:00 0 MW

15-04-2025 17:00 - 18:00 0 MW

15-04-2025 18:00 - 19:00 0 MW

15-04-2025 19:00 - 20:00 0 MW

15-04-2025 20:00 - 21:00 0 MW

15-04-2025 21:00 - 22:00 0 MW

15-04-2025 22:00 - 23:00 0 MW

15-04-2025 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*:

HVDC cable ARACTHOS – GALATINA

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

Not Applicable

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.

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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.

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