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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 NSL-GB-N2 border for delivery period 16-11-2026

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:

16-11-2026 16:00 - 17:00 98 MW

16-11-2026 17:00 - 18:00 98 MW

16-11-2026 18:00 - 19:00 98 MW

16-11-2026 19:00 - 20:00 98 MW

16-11-2026 20:00 - 21:00 98 MW

16-11-2026 21:00 - 22:00 98 MW

16-11-2026 22:00 - 23:00 98 MW

5. Amount of LTTR remaining after curtailment:

16-11-2026 16:00 - 17:00 0 MW

16-11-2026 17:00 - 18:00 0 MW

16-11-2026 18:00 - 19:00 0 MW

16-11-2026 19:00 - 20:00 0 MW

16-11-2026 20:00 - 21:00 0 MW

16-11-2026 21:00 - 22:00 0 MW

16-11-2026 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-IT border for delivery period 16-11-2026

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:

16-11-2026 09:00 - 10:00 344 MW

16-11-2026 10:00 - 11:00 344 MW

16-11-2026 11:00 - 12:00 344 MW

16-11-2026 12:00 - 13:00 344 MW

16-11-2026 13:00 - 14:00 344 MW

16-11-2026 14:00 - 15:00 344 MW

16-11-2026 21:00 - 22:00 344 MW

16-11-2026 22:00 - 23:00 344 MW

16-11-2026 23:00 - 24:00 344 MW

5. Amount of LTTR remaining after curtailment:

16-11-2026 09:00 - 10:00 313 MW

16-11-2026 10:00 - 11:00 313 MW

16-11-2026 11:00 - 12:00 313 MW

16-11-2026 12:00 - 13:00 313 MW

16-11-2026 13:00 - 14:00 313 MW

16-11-2026 14:00 - 15:00 313 MW

16-11-2026 21:00 - 22:00 312 MW

16-11-2026 22:00 - 23:00 312 MW

16-11-2026 23:00 - 24:00 298 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

Capacity Curtailment on the FR-CH border for delivery period 16-11-2026

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:

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

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

16-11-2026 12:00 - 13:00 370 MW

16-11-2026 13:00 - 14:00 370 MW

16-11-2026 14:00 - 15:00 370 MW

16-11-2026 15:00 - 16:00 370 MW

16-11-2026 16:00 - 17:00 370 MW

5. Amount of LTTR remaining after curtailment:

16-11-2026 10:00 - 11:00 0 MW

16-11-2026 11:00 - 12:00 0 MW

16-11-2026 12:00 - 13:00 0 MW

16-11-2026 13:00 - 14:00 0 MW

16-11-2026 14:00 - 15:00 0 MW

16-11-2026 15:00 - 16:00 0 MW

16-11-2026 16:00 - 17:00 0 MW

Capacity Curtailment on the NSL-GB-N2 border for delivery period 15-11-2026

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:

15-11-2026 17:00 - 18:00 98 MW

15-11-2026 18:00 - 19:00 98 MW

15-11-2026 19:00 - 20:00 98 MW

15-11-2026 20:00 - 21:00 98 MW

5. Amount of LTTR remaining after curtailment:

15-11-2026 17:00 - 18:00 2 MW

15-11-2026 18:00 - 19:00 0 MW

15-11-2026 19:00 - 20:00 0 MW

15-11-2026 20:00 - 21:00 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 IT-AT border for delivery period 15-11-2026

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:

15-11-2026 07:00 - 08:00 108 MW

15-11-2026 08:00 - 09:00 108 MW

5. Amount of LTTR remaining after curtailment:

15-11-2026 07:00 - 08:00 75 MW

15-11-2026 08:00 - 09:00 75 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

Capacity Curtailment on the IT-FR border for delivery period 15-11-2026

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:

15-11-2026 07:00 - 08:00 1495 MW

15-11-2026 08:00 - 09:00 1495 MW

5. Amount of LTTR remaining after curtailment:

15-11-2026 07:00 - 08:00 1059 MW

15-11-2026 08:00 - 09:00 1059 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

Capacity Curtailment on the FR-IT border for delivery period 15-11-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

FR-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

15-11-2026 09:00 - 10:00 2000 MW

15-11-2026 10:00 - 11:00 2000 MW

15-11-2026 11:00 - 12:00 2000 MW

5. Amount of LTTR remaining after curtailment:

15-11-2026 09:00 - 10:00 1884 MW

15-11-2026 10:00 - 11:00 1884 MW

15-11-2026 11:00 - 12:00 1884 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

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.

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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JAO workers

Frequently asked questions

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

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Do you need support?

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

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