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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 ES-FR border for delivery period 01-07-2026

by JAO

1. TSO(s)*:

RTE, REE

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:

01-07-2026 11:00 - 12:00 1280 MW

01-07-2026 12:00 - 13:00 1280 MW

01-07-2026 13:00 - 14:00 1280 MW

01-07-2026 14:00 - 15:00 1280 MW

01-07-2026 15:00 - 16:00 1280 MW

01-07-2026 16:00 - 17:00 1280 MW

01-07-2026 17:00 - 18:00 1280 MW

01-07-2026 18:00 - 19:00 1280 MW

01-07-2026 19:00 - 20:00 1280 MW

01-07-2026 20:00 - 21:00 1280 MW

01-07-2026 21:00 - 22:00 1280 MW

01-07-2026 22:00 - 23:00 1280 MW

01-07-2026 23:00 - 24:00 1280 MW

5. Amount of LTTR remaining after curtailment:

01-07-2026 11:00 - 12:00 874 MW

01-07-2026 12:00 - 13:00 874 MW

01-07-2026 13:00 - 14:00 874 MW

01-07-2026 14:00 - 15:00 874 MW

01-07-2026 15:00 - 16:00 523 MW

01-07-2026 16:00 - 17:00 523 MW

01-07-2026 17:00 - 18:00 523 MW

01-07-2026 18:00 - 19:00 460 MW

01-07-2026 19:00 - 20:00 460 MW

01-07-2026 20:00 - 21:00 460 MW

01-07-2026 21:00 - 22:00 460 MW

01-07-2026 22:00 - 23:00 460 MW

01-07-2026 23:00 - 24:00 460 MW

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

      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

Urgent Market Update: Cancellation of RS-MK-D-DAILYPRODU-260630-01 for Market Period 30/06/2026

by JAO
v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);}

As per TSO request, the RS-MK Daily Auction for market period 30/06/2026 with the auction ID RS-MK-D-DAILYPRODU-260630-01has been cancelled.


Capacity Curtailment on the IT-CH border for delivery period 30-06-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-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:

30-06-2026 18:00 - 19:00 720 MW

30-06-2026 19:00 - 20:00 720 MW

30-06-2026 20:00 - 21:00 720 MW

30-06-2026 21:00 - 22:00 720 MW

30-06-2026 22:00 - 23:00 720 MW

5. Amount of LTTR remaining after curtailment:

30-06-2026 18:00 - 19:00 195 MW

30-06-2026 19:00 - 20:00 0 MW

30-06-2026 20:00 - 21:00 0 MW

30-06-2026 21:00 - 22:00 0 MW

30-06-2026 22:00 - 23:00 589 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-FR border for delivery period 30-06-2026

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:

30-06-2026 17:00 - 18:00 1369 MW

30-06-2026 18:00 - 19:00 1369 MW

30-06-2026 19:00 - 20:00 1369 MW

30-06-2026 20:00 - 21:00 1369 MW

30-06-2026 21:00 - 22:00 1369 MW

30-06-2026 22:00 - 23:00 1369 MW

30-06-2026 23:00 - 24:00 1369 MW

5. Amount of LTTR remaining after curtailment:

30-06-2026 17:00 - 18:00 897 MW

30-06-2026 18:00 - 19:00 237 MW

30-06-2026 19:00 - 20:00 0 MW

30-06-2026 20:00 - 21:00 0 MW

30-06-2026 21:00 - 22:00 0 MW

30-06-2026 22:00 - 23:00 822 MW

30-06-2026 23:00 - 24:00 1317 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-SI border for delivery period 30-06-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-SI

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

30-06-2026 17:00 - 18:00 315 MW

30-06-2026 18:00 - 19:00 315 MW

30-06-2026 19:00 - 20:00 315 MW

30-06-2026 20:00 - 21:00 315 MW

30-06-2026 21:00 - 22:00 315 MW

30-06-2026 22:00 - 23:00 315 MW

5. Amount of LTTR remaining after curtailment:

30-06-2026 17:00 - 18:00 284 MW

30-06-2026 18:00 - 19:00 0 MW

30-06-2026 19:00 - 20:00 0 MW

30-06-2026 20:00 - 21:00 0 MW

30-06-2026 21:00 - 22:00 0 MW

30-06-2026 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*:

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 30-06-2026

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:

30-06-2026 17:00 - 18:00 75 MW

30-06-2026 18:00 - 19:00 75 MW

30-06-2026 19:00 - 20:00 75 MW

30-06-2026 20:00 - 21:00 75 MW

30-06-2026 21:00 - 22:00 75 MW

30-06-2026 22:00 - 23:00 75 MW

5. Amount of LTTR remaining after curtailment:

30-06-2026 17:00 - 18:00 55 MW

30-06-2026 18:00 - 19:00 12 MW

30-06-2026 19:00 - 20:00 2 MW

30-06-2026 20:00 - 21:00 2 MW

30-06-2026 21:00 - 22:00 2 MW

30-06-2026 22:00 - 23:00 2 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-IT border for delivery period 30-06-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

AT-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

30-06-2026 21:00 - 22:00 225 MW

30-06-2026 22:00 - 23:00 225 MW

5. Amount of LTTR remaining after curtailment:

30-06-2026 21:00 - 22:00 189 MW

30-06-2026 22:00 - 23:00 189 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. 

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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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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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