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Annual Report

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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
OPS
  • 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 FR-CH border for delivery period 20-10-2026

by JAO

1. TSO(s)*:

RTE, SWISSGRID

2. Identification of affected Long Term Transmission Rights:

FR-CH

3. Triggering event:

Curtailment due to Curtailment to ensure operation remains within Operational Security Limits

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

20-10-2026 00:00 - 01:00 370 MW

20-10-2026 01:00 - 02:00 370 MW

20-10-2026 02:00 - 03:00 370 MW

20-10-2026 03:00 - 04:00 370 MW

20-10-2026 04:00 - 05:00 370 MW

20-10-2026 05:00 - 06:00 370 MW

20-10-2026 06:00 - 07:00 370 MW

20-10-2026 07:00 - 08:00 370 MW

20-10-2026 08:00 - 09:00 370 MW

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

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

20-10-2026 11:00 - 12:00 370 MW

20-10-2026 12:00 - 13:00 370 MW

20-10-2026 13:00 - 14:00 370 MW

20-10-2026 14:00 - 15:00 370 MW

20-10-2026 15:00 - 16:00 370 MW

20-10-2026 16:00 - 17:00 370 MW

20-10-2026 17:00 - 18:00 370 MW

20-10-2026 18:00 - 19:00 370 MW

20-10-2026 19:00 - 20:00 370 MW

20-10-2026 20:00 - 21:00 370 MW

20-10-2026 21:00 - 22:00 370 MW

20-10-2026 22:00 - 23:00 370 MW

20-10-2026 23:00 - 24:00 370 MW

5. Amount of LTTR remaining after curtailment:

20-10-2026 00:00 - 01:00 0 MW

20-10-2026 01:00 - 02:00 0 MW

20-10-2026 02:00 - 03:00 0 MW

20-10-2026 03:00 - 04:00 0 MW

20-10-2026 04:00 - 05:00 0 MW

20-10-2026 05:00 - 06:00 0 MW

20-10-2026 06:00 - 07:00 0 MW

20-10-2026 07:00 - 08:00 0 MW

20-10-2026 08:00 - 09:00 0 MW

20-10-2026 09:00 - 10:00 0 MW

20-10-2026 10:00 - 11:00 0 MW

20-10-2026 11:00 - 12:00 0 MW

20-10-2026 12:00 - 13:00 0 MW

20-10-2026 13:00 - 14:00 0 MW

20-10-2026 14:00 - 15:00 0 MW

20-10-2026 15:00 - 16:00 0 MW

20-10-2026 16:00 - 17:00 0 MW

20-10-2026 17:00 - 18:00 0 MW

20-10-2026 18:00 - 19:00 0 MW

20-10-2026 19:00 - 20:00 0 MW

20-10-2026 20:00 - 21:00 0 MW

20-10-2026 21:00 - 22:00 0 MW

20-10-2026 22:00 - 23:00 0 MW

20-10-2026 23:00 - 24:00 0 MW

Delay in the publication of Publication Tool data

by JAO

Please be informed that there is a delay in the publication of data on PUTO due to a technical reason for BD 18/10

The relevant data will be published as soon as possible.

We apologise for any inconvenience this may cause and appreciate your understanding.

Capacity Curtailment on the NSL-GB-N2 border for delivery period 19-10-2026

by JAO

1. TSO(s)*:

NGNSL_IC

2. Identification of affected Long Term Transmission Rights:

NSL-GB-N2

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

19-10-2026 18:00 - 19:00 50 MW

19-10-2026 19:00 - 20:00 50 MW

19-10-2026 20:00 - 21:00 50 MW

19-10-2026 21:00 - 22:00 50 MW

19-10-2026 22:00 - 23:00 50 MW

5. Amount of LTTR remaining after curtailment:

19-10-2026 18:00 - 19:00 0 MW

19-10-2026 19:00 - 20:00 0 MW

19-10-2026 20:00 - 21:00 0 MW

19-10-2026 21:00 - 22:00 0 MW

19-10-2026 22:00 - 23:00 0 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 NTC restrictions

Capacity Curtailment on the AT-CZ border for delivery period 19-10-2026

by JAO

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:

19-10-2026 10:00 - 11:00 350 MW

19-10-2026 11:00 - 12:00 350 MW

19-10-2026 12:00 - 13:00 350 MW

19-10-2026 13:00 - 14:00 350 MW

19-10-2026 14:00 - 15:00 350 MW

5. Amount of LTTR remaining after curtailment:

19-10-2026 10:00 - 11:00 142 MW

19-10-2026 11:00 - 12:00 136 MW

19-10-2026 12:00 - 13:00 142 MW

19-10-2026 13:00 - 14:00 149 MW

19-10-2026 14:00 - 15:00 176 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.

Capacity Curtailment on the SI-AT border for delivery period 19-10-2026

by JAO

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:

19-10-2026 10:00 - 11:00 400 MW

19-10-2026 11:00 - 12:00 400 MW

19-10-2026 12:00 - 13:00 400 MW

19-10-2026 13:00 - 14:00 400 MW

19-10-2026 14:00 - 15:00 400 MW

5. Amount of LTTR remaining after curtailment:

19-10-2026 10:00 - 11:00 177 MW

19-10-2026 11:00 - 12:00 206 MW

19-10-2026 12:00 - 13:00 206 MW

19-10-2026 13:00 - 14:00 215 MW

19-10-2026 14:00 - 15:00 216 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.

Capacity Curtailment on the HU-AT border for delivery period 19-10-2026

by JAO

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:

19-10-2026 10:00 - 11:00 320 MW

19-10-2026 11:00 - 12:00 320 MW

19-10-2026 12:00 - 13:00 320 MW

19-10-2026 13:00 - 14:00 320 MW

19-10-2026 14:00 - 15:00 320 MW

5. Amount of LTTR remaining after curtailment:

19-10-2026 10:00 - 11:00 261 MW

19-10-2026 11:00 - 12:00 167 MW

19-10-2026 12:00 - 13:00 163 MW

19-10-2026 13:00 - 14:00 189 MW

19-10-2026 14:00 - 15:00 163 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.

Capacity Curtailment on the AT-DE border for delivery period 19-10-2026

by JAO

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:

19-10-2026 10:00 - 11:00 4419 MW

19-10-2026 11:00 - 12:00 4419 MW

19-10-2026 12:00 - 13:00 4419 MW

19-10-2026 13:00 - 14:00 4419 MW

19-10-2026 14:00 - 15:00 4419 MW

5. Amount of LTTR remaining after curtailment:

19-10-2026 10:00 - 11:00 1753 MW

19-10-2026 11:00 - 12:00 1696 MW

19-10-2026 12:00 - 13:00 1858 MW

19-10-2026 13:00 - 14:00 2005 MW

19-10-2026 14:00 - 15:00 2530 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.

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. 

IT

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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Check out the common questions and our answers on how to use the auction platform.

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