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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 SI-AT border for delivery period 17-06-2026

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:

17-06-2026 08:00 - 09:00 370 MW

17-06-2026 09:00 - 10:00 370 MW

17-06-2026 10:00 - 11:00 370 MW

17-06-2026 11:00 - 12:00 370 MW

17-06-2026 12:00 - 13:00 370 MW

17-06-2026 13:00 - 14:00 370 MW

17-06-2026 14:00 - 15:00 370 MW

17-06-2026 15:00 - 16:00 370 MW

5. Amount of LTTR remaining after curtailment:

17-06-2026 08:00 - 09:00 186 MW

17-06-2026 09:00 - 10:00 179 MW

17-06-2026 10:00 - 11:00 154 MW

17-06-2026 11:00 - 12:00 164 MW

17-06-2026 12:00 - 13:00 178 MW

17-06-2026 13:00 - 14:00 164 MW

17-06-2026 14:00 - 15:00 152 MW

17-06-2026 15:00 - 16:00 165 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 17-06-2026

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:

17-06-2026 08:00 - 09:00 295 MW

17-06-2026 10:00 - 11:00 295 MW

17-06-2026 11:00 - 12:00 295 MW

17-06-2026 12:00 - 13:00 295 MW

17-06-2026 13:00 - 14:00 295 MW

17-06-2026 14:00 - 15:00 295 MW

17-06-2026 15:00 - 16:00 295 MW

5. Amount of LTTR remaining after curtailment:

17-06-2026 08:00 - 09:00 259 MW

17-06-2026 10:00 - 11:00 243 MW

17-06-2026 11:00 - 12:00 259 MW

17-06-2026 12:00 - 13:00 256 MW

17-06-2026 13:00 - 14:00 243 MW

17-06-2026 14:00 - 15:00 231 MW

17-06-2026 15:00 - 16:00 242 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-CZ border for delivery period 17-06-2026

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:

17-06-2026 08:00 - 09:00 350 MW

17-06-2026 09:00 - 10:00 350 MW

17-06-2026 10:00 - 11:00 350 MW

17-06-2026 11:00 - 12:00 350 MW

17-06-2026 12:00 - 13:00 350 MW

17-06-2026 13:00 - 14:00 350 MW

17-06-2026 14:00 - 15:00 350 MW

17-06-2026 15:00 - 16:00 350 MW

5. Amount of LTTR remaining after curtailment:

17-06-2026 08:00 - 09:00 96 MW

17-06-2026 09:00 - 10:00 150 MW

17-06-2026 10:00 - 11:00 150 MW

17-06-2026 11:00 - 12:00 150 MW

17-06-2026 12:00 - 13:00 149 MW

17-06-2026 13:00 - 14:00 155 MW

17-06-2026 14:00 - 15:00 143 MW

17-06-2026 15:00 - 16:00 132 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 17-06-2026

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:

17-06-2026 08:00 - 09:00 3620 MW

17-06-2026 09:00 - 10:00 3620 MW

17-06-2026 10:00 - 11:00 3620 MW

17-06-2026 11:00 - 12:00 3620 MW

17-06-2026 12:00 - 13:00 3620 MW

17-06-2026 13:00 - 14:00 3620 MW

17-06-2026 14:00 - 15:00 3620 MW

17-06-2026 15:00 - 16:00 3620 MW

5. Amount of LTTR remaining after curtailment:

17-06-2026 08:00 - 09:00 1114 MW

17-06-2026 09:00 - 10:00 1354 MW

17-06-2026 10:00 - 11:00 1723 MW

17-06-2026 11:00 - 12:00 1943 MW

17-06-2026 12:00 - 13:00 2121 MW

17-06-2026 13:00 - 14:00 1908 MW

17-06-2026 14:00 - 15:00 1757 MW

17-06-2026 15:00 - 16:00 1840 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.


PUTO maintenance 15/06/2026

by JAO

PUTO maintenance 15/06/2026

Please be informed that PUTO will be unavailable due to a maintenance from 19:00 to 19:30 CEST today (15/06/ 2026 ).

We would like to apologies for any inconvenience this may have caused.

Thank you.

JAO Operations

Capacity Curtailment on the SI-AT border for delivery period 16-06-2026

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:

16-06-2026 09:00 - 10:00 370 MW

16-06-2026 10:00 - 11:00 370 MW

16-06-2026 11:00 - 12:00 370 MW

16-06-2026 12:00 - 13:00 370 MW

16-06-2026 13:00 - 14:00 370 MW

16-06-2026 14:00 - 15:00 370 MW

5. Amount of LTTR remaining after curtailment:

16-06-2026 09:00 - 10:00 179 MW

16-06-2026 10:00 - 11:00 146 MW

16-06-2026 11:00 - 12:00 142 MW

16-06-2026 12:00 - 13:00 148 MW

16-06-2026 13:00 - 14:00 148 MW

16-06-2026 14:00 - 15:00 151 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 16-06-2026

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:

16-06-2026 09:00 - 10:00 3620 MW

16-06-2026 10:00 - 11:00 3620 MW

16-06-2026 11:00 - 12:00 3620 MW

16-06-2026 12:00 - 13:00 3620 MW

16-06-2026 13:00 - 14:00 3620 MW

16-06-2026 14:00 - 15:00 3620 MW

5. Amount of LTTR remaining after curtailment:

16-06-2026 09:00 - 10:00 781 MW

16-06-2026 10:00 - 11:00 1086 MW

16-06-2026 11:00 - 12:00 1139 MW

16-06-2026 12:00 - 13:00 1735 MW

16-06-2026 13:00 - 14:00 1665 MW

16-06-2026 14:00 - 15:00 1619 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.

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. 

ISO
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.

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.

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Frequently asked questions

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

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If you can't find an answer to your question, our team is here to help!

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