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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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LTFBA External Parallel Run - Results available for July 2026

Published: 19/06/2026 | 13:09 by JAO
Banking Holiday: 23/06/2026 – Impact on Transactions and Credit Limit Updates

Published: 19/06/2026 | 08:15 by JAO
Capacity Curtailment on the SI-AT border for delivery period 20-06-2026

Published: 19/06/2026 | 08:04 by JAO
Capacity Curtailment on the HU-AT border for delivery period 20-06-2026

Published: 19/06/2026 | 08:01 by JAO
Capacity Curtailment on the AT-CZ border for delivery period 20-06-2026

Published: 19/06/2026 | 08:01 by JAO
Capacity Curtailment on the AT-DE border for delivery period 20-06-2026

Published: 19/06/2026 | 07:59 by JAO
Capacity Curtailment on the ES-FR border for delivery period 20-06-2026

Published: 18/06/2026 | 22:04 by JAO

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We would like to inform you that the latest version of the Long-term flow-based allocation results for the Monthly July 2026 LTFBA auction (CORE) are available on our website via the following link: External Parallel Run | JAO S.A. Leading service provider for TSOs

The results of the coordinated capacity calculation runs are available on our Publication Tool: https://parallelrun-publicationtool.jao.eu/coreLtfba/

Best regards,

JAO Operations

Please be advised that 23-06-2026, is a banking holiday in Luxembourg (Luxembourg National Holiday) http://www.jao.eu/resource-center/public-holidays

This holiday applies solely to the banking sector, and JAO Operations will remain available.

Please note that any credit limit update resulting from transactions on your ING business account will not be reflected until 25-06-2026

Additionally, transactions initiated after ING Luxembourg's cutoff time on 19-06-2026, will have a value date of 25-06-2026.

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

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

SI-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

20-06-2026 08:00 - 09:00 370 MW

20-06-2026 09:00 - 10:00 370 MW

20-06-2026 10:00 - 11:00 370 MW

20-06-2026 11:00 - 12:00 370 MW

20-06-2026 12:00 - 13:00 370 MW

20-06-2026 13:00 - 14:00 370 MW

20-06-2026 14:00 - 15:00 370 MW

20-06-2026 15:00 - 16:00 370 MW

5. Amount of LTTR remaining after curtailment:

20-06-2026 08:00 - 09:00 187 MW

20-06-2026 09:00 - 10:00 199 MW

20-06-2026 10:00 - 11:00 186 MW

20-06-2026 11:00 - 12:00 127 MW

20-06-2026 12:00 - 13:00 148 MW

20-06-2026 13:00 - 14:00 152 MW

20-06-2026 14:00 - 15:00 154 MW

20-06-2026 15:00 - 16:00 148 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 in the calculation..

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

HU-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

20-06-2026 09:00 - 10:00 295 MW

20-06-2026 10:00 - 11:00 295 MW

20-06-2026 11:00 - 12:00 295 MW

20-06-2026 12:00 - 13:00 295 MW

20-06-2026 13:00 - 14:00 295 MW

20-06-2026 14:00 - 15:00 295 MW

20-06-2026 15:00 - 16:00 295 MW

5. Amount of LTTR remaining after curtailment:

20-06-2026 09:00 - 10:00 203 MW

20-06-2026 10:00 - 11:00 211 MW

20-06-2026 11:00 - 12:00 215 MW

20-06-2026 12:00 - 13:00 215 MW

20-06-2026 13:00 - 14:00 211 MW

20-06-2026 14:00 - 15:00 215 MW

20-06-2026 15:00 - 16:00 211 MW

5. Amount of LTTR remaining after curtailment:

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 in the calculation.

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

AT-CZ

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

20-06-2026 08:00 - 09:00 350 MW

20-06-2026 09:00 - 10:00 350 MW

20-06-2026 10:00 - 11:00 350 MW

20-06-2026 11:00 - 12:00 350 MW

20-06-2026 12:00 - 13:00 350 MW

20-06-2026 13:00 - 14:00 350 MW

20-06-2026 14:00 - 15:00 350 MW

20-06-2026 15:00 - 16:00 350 MW

5. Amount of LTTR remaining after curtailment:

20-06-2026 08:00 - 09:00 174 MW

20-06-2026 09:00 - 10:00 175 MW

20-06-2026 10:00 - 11:00 155 MW

20-06-2026 11:00 - 12:00 155 MW

20-06-2026 12:00 - 13:00 155 MW

20-06-2026 13:00 - 14:00 173 MW

20-06-2026 14:00 - 15:00 171 MW

20-06-2026 15:00 - 16:00 180 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 in the calculation.

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

AT-DE

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

20-06-2026 08:00 - 09:00 3620 MW

20-06-2026 09:00 - 10:00 3620 MW

20-06-2026 10:00 - 11:00 3620 MW

20-06-2026 11:00 - 12:00 3620 MW

20-06-2026 12:00 - 13:00 3620 MW

20-06-2026 13:00 - 14:00 3620 MW

20-06-2026 14:00 - 15:00 3620 MW

20-06-2026 15:00 - 16:00 3620 MW

5. Amount of LTTR remaining after curtailment:

20-06-2026 08:00 - 09:00 1971 MW

20-06-2026 09:00 - 10:00 2471 MW

20-06-2026 10:00 - 11:00 2590 MW

20-06-2026 11:00 - 12:00 2349 MW

20-06-2026 12:00 - 13:00 2393 MW

20-06-2026 13:00 - 14:00 2475 MW

20-06-2026 14:00 - 15:00 1987 MW

20-06-2026 15:00 - 16:00 2253 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 in the calculation.

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:

20-06-2026 07:00 - 08:00 1320 MW

20-06-2026 08:00 - 09:00 1320 MW

20-06-2026 09:00 - 10:00 1320 MW

20-06-2026 10:00 - 11:00 1320 MW

20-06-2026 13:00 - 14:00 1320 MW

20-06-2026 14:00 - 15:00 1320 MW

20-06-2026 15:00 - 16:00 1320 MW

20-06-2026 16:00 - 17:00 1320 MW

20-06-2026 17:00 - 18:00 1320 MW

20-06-2026 18:00 - 19:00 1320 MW

5. Amount of LTTR remaining after curtailment:

20-06-2026 07:00 - 08:00 964 MW

20-06-2026 08:00 - 09:00 964 MW

20-06-2026 09:00 - 10:00 964 MW

20-06-2026 10:00 - 11:00 964 MW

20-06-2026 13:00 - 14:00 1243 MW

20-06-2026 14:00 - 15:00 1243 MW

20-06-2026 15:00 - 16:00 202 MW

20-06-2026 16:00 - 17:00 202 MW

20-06-2026 17:00 - 18:00 202 MW

20-06-2026 18:00 - 19:00 202 MW

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

20/06/2026

07:00-08:00 Network Security

08:00-09:00 Network Security

09:00-10:00 Network Security

10:00-11:00 Network Security

13:00-14:00 MARMAGNE-TABARDERIE 2

14:00-15:00 MARMAGNE-TABARDERIE 2

15:00-16:00 Network Security

16:00-17:00 Network Security

17:00-18:00 Network Security

18:00-19:00 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

Resource Center

This section contains key information for market participants such as user guides, forms, auction rules, nomination deadlines and other documents.

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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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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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