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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 EE-LV border for delivery period 26-06-2026

by JAO

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:

26-06-2026 07:00 - 08:00 416 MW

26-06-2026 09:00 - 10:00 416 MW

26-06-2026 10:00 - 11:00 416 MW

26-06-2026 11:00 - 12:00 416 MW

26-06-2026 12:00 - 13:00 416 MW

26-06-2026 13:00 - 14:00 416 MW

26-06-2026 14:00 - 15:00 416 MW

5. Amount of LTTR remaining after curtailment:

26-06-2026 07:00 - 08:00 383 MW

26-06-2026 09:00 - 10:00 381 MW

26-06-2026 10:00 - 11:00 381 MW

26-06-2026 11:00 - 12:00 381 MW

26-06-2026 12:00 - 13:00 377 MW

26-06-2026 13:00 - 14:00 377 MW

26-06-2026 14:00 - 15:00 377 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.

Capacity Curtailment on the AT-DE border for delivery period 26-06-2026

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:

26-06-2026 08:00 - 09:00 3620 MW

26-06-2026 09:00 - 10:00 3620 MW

26-06-2026 10:00 - 11:00 3620 MW

26-06-2026 11:00 - 12:00 3620 MW

26-06-2026 12:00 - 13:00 3620 MW

26-06-2026 13:00 - 14:00 3620 MW

26-06-2026 14:00 - 15:00 3620 MW

26-06-2026 15:00 - 16:00 3620 MW

5. Amount of LTTR remaining after curtailment:

26-06-2026 08:00 - 09:00 606 MW

26-06-2026 09:00 - 10:00 1072 MW

26-06-2026 10:00 - 11:00 1080 MW

26-06-2026 11:00 - 12:00 1075 MW

26-06-2026 12:00 - 13:00 1075 MW

26-06-2026 13:00 - 14:00 1074 MW

26-06-2026 14:00 - 15:00 1075 MW

26-06-2026 15:00 - 16:00 1075 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 26-06-2026

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:

26-06-2026 08:00 - 09:00 345 MW

26-06-2026 09:00 - 10:00 345 MW

26-06-2026 10:00 - 11:00 345 MW

26-06-2026 11:00 - 12:00 345 MW

26-06-2026 12:00 - 13:00 345 MW

26-06-2026 13:00 - 14:00 345 MW

26-06-2026 14:00 - 15:00 345 MW

26-06-2026 15:00 - 16:00 345 MW

5. Amount of LTTR remaining after curtailment:

26-06-2026 08:00 - 09:00 201 MW

26-06-2026 09:00 - 10:00 165 MW

26-06-2026 10:00 - 11:00 152 MW

26-06-2026 11:00 - 12:00 166 MW

26-06-2026 12:00 - 13:00 177 MW

26-06-2026 13:00 - 14:00 177 MW

26-06-2026 14:00 - 15:00 188 MW

26-06-2026 15:00 - 16:00 201 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 26-06-2026

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:

26-06-2026 08:00 - 09:00 295 MW

26-06-2026 09:00 - 10:00 295 MW

26-06-2026 10:00 - 11:00 295 MW

26-06-2026 11:00 - 12:00 295 MW

26-06-2026 12:00 - 13:00 295 MW

26-06-2026 13:00 - 14:00 295 MW

26-06-2026 14:00 - 15:00 295 MW

26-06-2026 15:00 - 16:00 295 MW

5. Amount of LTTR remaining after curtailment:

26-06-2026 08:00 - 09:00 246 MW

26-06-2026 09:00 - 10:00 266 MW

26-06-2026 10:00 - 11:00 260 MW

26-06-2026 11:00 - 12:00 260 MW

26-06-2026 12:00 - 13:00 266 MW

26-06-2026 13:00 - 14:00 259 MW

26-06-2026 14:00 - 15:00 266 MW

26-06-2026 15:00 - 16:00 270 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 26-06-2026

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:

26-06-2026 08:00 - 09:00 350 MW

26-06-2026 09:00 - 10:00 350 MW

26-06-2026 10:00 - 11:00 350 MW

26-06-2026 11:00 - 12:00 350 MW

26-06-2026 12:00 - 13:00 350 MW

26-06-2026 13:00 - 14:00 350 MW

26-06-2026 14:00 - 15:00 350 MW

26-06-2026 15:00 - 16:00 350 MW

5. Amount of LTTR remaining after curtailment:

26-06-2026 08:00 - 09:00 44 MW

26-06-2026 09:00 - 10:00 96 MW

26-06-2026 10:00 - 11:00 95 MW

26-06-2026 11:00 - 12:00 99 MW

26-06-2026 12:00 - 13:00 99 MW

26-06-2026 13:00 - 14:00 99 MW

26-06-2026 14:00 - 15:00 99 MW

26-06-2026 15:00 - 16:00 96 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 IT-AT border for delivery period 26-06-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

26-06-2026 18:00 - 19:00 75 MW

26-06-2026 19:00 - 20:00 75 MW

26-06-2026 20:00 - 21:00 75 MW

26-06-2026 21:00 - 22:00 75 MW

5. Amount of LTTR remaining after curtailment:

26-06-2026 18:00 - 19:00 49 MW

26-06-2026 19:00 - 20:00 2 MW

26-06-2026 20:00 - 21:00 2 MW

26-06-2026 21:00 - 22:00 17 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 CCC1. TSO(s).

Capacity Curtailment on the IT-FR border for delivery period 26-06-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-FR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

26-06-2026 18:00 - 19:00 1369 MW

26-06-2026 19:00 - 20:00 1369 MW

26-06-2026 20:00 - 21:00 1369 MW

26-06-2026 21:00 - 22:00 1369 MW

26-06-2026 22:00 - 23:00 1369 MW

5. Amount of LTTR remaining after curtailment:

26-06-2026 18:00 - 19:00 692 MW

26-06-2026 19:00 - 20:00 0 MW

26-06-2026 20:00 - 21:00 0 MW

26-06-2026 21:00 - 22:00 202 MW

26-06-2026 22:00 - 23:00 918 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 CCC1. TSO(s).

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. 

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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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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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