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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 CH-IT border for delivery period 06-06-2026

by JAO

1. TSO(s)*:

SWISSGRID

2. Identification of affected Long Term Transmission Rights:

CH-IT

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:

06-06-2026 11:00 - 12:00 279 MW

06-06-2026 12:00 - 13:00 279 MW

06-06-2026 13:00 - 14:00 279 MW

06-06-2026 14:00 - 15:00 279 MW

06-06-2026 15:00 - 16:00 279 MW

5. Amount of LTTR remaining after curtailment:

06-06-2026 11:00 - 12:00 186 MW

06-06-2026 12:00 - 13:00 0 MW

06-06-2026 13:00 - 14:00 0 MW

06-06-2026 14:00 - 15:00 0 MW

06-06-2026 15:00 - 16:00 199 MW

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

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

SI-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

06-06-2026 12:00 - 13:00 59 MW

06-06-2026 13:00 - 14:00 59 MW

06-06-2026 14:00 - 15:00 59 MW

06-06-2026 15:00 - 16:00 59 MW

5. Amount of LTTR remaining after curtailment:

06-06-2026 12:00 - 13:00 0 MW

06-06-2026 13:00 - 14:00 0 MW

06-06-2026 14:00 - 15:00 0 MW

06-06-2026 15:00 - 16:00 33 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

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

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

by JAO

1. TSO(s)*:

TERNA-RTE

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:

06-06-2026 12:00 - 13:00 450 MW

06-06-2026 13:00 - 14:00 450 MW

06-06-2026 14:00 - 15:00 450 MW

5. Amount of LTTR remaining after curtailment:

06-06-2026 12:00 - 13:00 0 MW

06-06-2026 13:00 - 14:00 0 MW

06-06-2026 14:00 - 15:00 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

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

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

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:

06-06-2026 11:00 - 12:00 70 MW

06-06-2026 12:00 - 13:00 70 MW

06-06-2026 13:00 - 14:00 70 MW

06-06-2026 14:00 - 15:00 70 MW

5. Amount of LTTR remaining after curtailment:

06-06-2026 11:00 - 12:00 60 MW

06-06-2026 12:00 - 13:00 59 MW

06-06-2026 13:00 - 14:00 59 MW

06-06-2026 14:00 - 15:00 59 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

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

Capacity Curtailment on the IF2-FR-GB border for delivery period 07-06-2026

by JAO

1. TSO(s)*:

RNP

2. Identification of affected Long Term Transmission Rights:

IF2-FR-GB

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

07-06-2026 00:00 - 01:00 948 MW

07-06-2026 01:00 - 02:00 948 MW

07-06-2026 02:00 - 03:00 948 MW

07-06-2026 03:00 - 04:00 948 MW

07-06-2026 04:00 - 05:00 948 MW

07-06-2026 05:00 - 06:00 948 MW

07-06-2026 06:00 - 07:00 948 MW

07-06-2026 07:00 - 08:00 948 MW

07-06-2026 08:00 - 09:00 948 MW

07-06-2026 09:00 - 10:00 948 MW

07-06-2026 10:00 - 11:00 948 MW

07-06-2026 11:00 - 12:00 948 MW

07-06-2026 12:00 - 13:00 948 MW

07-06-2026 13:00 - 14:00 948 MW

07-06-2026 14:00 - 15:00 948 MW

07-06-2026 15:00 - 16:00 948 MW

07-06-2026 16:00 - 17:00 948 MW

07-06-2026 17:00 - 18:00 948 MW

07-06-2026 18:00 - 19:00 948 MW

07-06-2026 19:00 - 20:00 948 MW

07-06-2026 20:00 - 21:00 948 MW

07-06-2026 21:00 - 22:00 948 MW

07-06-2026 22:00 - 23:00 948 MW

07-06-2026 23:00 - 24:00 948 MW

5. Amount of LTTR remaining after curtailment:

07-06-2026 00:00 - 01:00 0 MW

07-06-2026 01:00 - 02:00 0 MW

07-06-2026 02:00 - 03:00 0 MW

07-06-2026 03:00 - 04:00 0 MW

07-06-2026 04:00 - 05:00 0 MW

07-06-2026 05:00 - 06:00 0 MW

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

07-06-2026 07:00 - 08:00 0 MW

07-06-2026 08:00 - 09:00 0 MW

07-06-2026 09:00 - 10:00 0 MW

07-06-2026 10:00 - 11:00 0 MW

07-06-2026 11:00 - 12:00 0 MW

07-06-2026 12:00 - 13:00 0 MW

07-06-2026 13:00 - 14:00 0 MW

07-06-2026 14:00 - 15:00 0 MW

07-06-2026 15:00 - 16:00 0 MW

07-06-2026 16:00 - 17:00 0 MW

07-06-2026 17:00 - 18:00 0 MW

07-06-2026 18:00 - 19:00 0 MW

07-06-2026 19:00 - 20:00 0 MW

07-06-2026 20:00 - 21:00 0 MW

07-06-2026 21:00 - 22:00 0 MW

07-06-2026 22:00 - 23:00 0 MW

07-06-2026 23:00 - 24:00 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 unplanned maintenance

Capacity Curtailment on the IF2-GB-FR border for delivery period 07-06-2026

by JAO

1. TSO(s)*:

RNP

2. Identification of affected Long Term Transmission Rights:

IF2-GB-FR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

07-06-2026 00:00 - 01:00 946 MW

07-06-2026 01:00 - 02:00 946 MW

07-06-2026 02:00 - 03:00 946 MW

07-06-2026 03:00 - 04:00 946 MW

07-06-2026 04:00 - 05:00 946 MW

07-06-2026 05:00 - 06:00 946 MW

07-06-2026 06:00 - 07:00 946 MW

07-06-2026 07:00 - 08:00 946 MW

07-06-2026 08:00 - 09:00 946 MW

07-06-2026 09:00 - 10:00 946 MW

07-06-2026 10:00 - 11:00 946 MW

07-06-2026 11:00 - 12:00 946 MW

07-06-2026 12:00 - 13:00 946 MW

07-06-2026 13:00 - 14:00 946 MW

07-06-2026 14:00 - 15:00 946 MW

07-06-2026 15:00 - 16:00 946 MW

07-06-2026 16:00 - 17:00 946 MW

07-06-2026 17:00 - 18:00 946 MW

07-06-2026 18:00 - 19:00 946 MW

07-06-2026 19:00 - 20:00 946 MW

07-06-2026 20:00 - 21:00 946 MW

07-06-2026 21:00 - 22:00 946 MW

07-06-2026 22:00 - 23:00 946 MW

07-06-2026 23:00 - 24:00 946 MW

5. Amount of LTTR remaining after curtailment:

07-06-2026 00:00 - 01:00 0 MW

07-06-2026 01:00 - 02:00 0 MW

07-06-2026 02:00 - 03:00 0 MW

07-06-2026 03:00 - 04:00 0 MW

07-06-2026 04:00 - 05:00 0 MW

07-06-2026 05:00 - 06:00 0 MW

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

07-06-2026 07:00 - 08:00 0 MW

07-06-2026 08:00 - 09:00 0 MW

07-06-2026 09:00 - 10:00 0 MW

07-06-2026 10:00 - 11:00 0 MW

07-06-2026 11:00 - 12:00 0 MW

07-06-2026 12:00 - 13:00 0 MW

07-06-2026 13:00 - 14:00 0 MW

07-06-2026 14:00 - 15:00 0 MW

07-06-2026 15:00 - 16:00 0 MW

07-06-2026 16:00 - 17:00 0 MW

07-06-2026 17:00 - 18:00 0 MW

07-06-2026 18:00 - 19:00 0 MW

07-06-2026 19:00 - 20:00 0 MW

07-06-2026 20:00 - 21:00 0 MW

07-06-2026 21:00 - 22:00 0 MW

07-06-2026 22:00 - 23:00 0 MW

07-06-2026 23:00 - 24:00 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 unplanned maintenance

Capacity Curtailment on the IF2-FR-GB border for delivery period 06-06-2026

by JAO

1. TSO(s)*:

RNP

2. Identification of affected Long Term Transmission Rights:

IF2-FR-GB

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

06-06-2026 00:00 - 01:00 948 MW

06-06-2026 01:00 - 02:00 948 MW

06-06-2026 02:00 - 03:00 948 MW

06-06-2026 03:00 - 04:00 948 MW

06-06-2026 04:00 - 05:00 948 MW

06-06-2026 05:00 - 06:00 948 MW

06-06-2026 06:00 - 07:00 948 MW

06-06-2026 07:00 - 08:00 948 MW

06-06-2026 08:00 - 09:00 948 MW

06-06-2026 09:00 - 10:00 948 MW

06-06-2026 10:00 - 11:00 948 MW

06-06-2026 11:00 - 12:00 948 MW

06-06-2026 12:00 - 13:00 948 MW

06-06-2026 13:00 - 14:00 948 MW

06-06-2026 14:00 - 15:00 948 MW

06-06-2026 15:00 - 16:00 948 MW

06-06-2026 16:00 - 17:00 948 MW

06-06-2026 17:00 - 18:00 948 MW

06-06-2026 18:00 - 19:00 948 MW

06-06-2026 19:00 - 20:00 948 MW

06-06-2026 20:00 - 21:00 948 MW

06-06-2026 21:00 - 22:00 948 MW

06-06-2026 22:00 - 23:00 948 MW

06-06-2026 23:00 - 24:00 948 MW

5. Amount of LTTR remaining after curtailment:

06-06-2026 00:00 - 01:00 0 MW

06-06-2026 01:00 - 02:00 0 MW

06-06-2026 02:00 - 03:00 0 MW

06-06-2026 03:00 - 04:00 0 MW

06-06-2026 04:00 - 05:00 0 MW

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

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

06-06-2026 07:00 - 08:00 0 MW

06-06-2026 08:00 - 09:00 0 MW

06-06-2026 09:00 - 10:00 0 MW

06-06-2026 10:00 - 11:00 0 MW

06-06-2026 11:00 - 12:00 0 MW

06-06-2026 12:00 - 13:00 0 MW

06-06-2026 13:00 - 14:00 0 MW

06-06-2026 14:00 - 15:00 0 MW

06-06-2026 15:00 - 16:00 0 MW

06-06-2026 16:00 - 17:00 0 MW

06-06-2026 17:00 - 18:00 0 MW

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

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

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

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

06-06-2026 22:00 - 23:00 0 MW

06-06-2026 23:00 - 24:00 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 unplanned maintenance

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.

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

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