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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.

 

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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

Capacity Curtailment on the AT-CZ border for delivery period 24-05-2026

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:

24-05-2026 11:00 - 12:00 350 MW

24-05-2026 12:00 - 13:00 350 MW

24-05-2026 13:00 - 14:00 350 MW

24-05-2026 14:00 - 15:00 350 MW

5. Amount of LTTR remaining after curtailment:

24-05-2026 11:00 - 12:00 227 MW

24-05-2026 12:00 - 13:00 227 MW

24-05-2026 13:00 - 14:00 228 MW

24-05-2026 14:00 - 15:00 228 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.

*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 HU-AT border for delivery period 24-05-2026

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:

24-05-2026 11:00 - 12:00 295 MW

24-05-2026 12:00 - 13:00 295 MW

24-05-2026 13:00 - 14:00 295 MW

5. Amount of LTTR remaining after curtailment:

24-05-2026 11:00 - 12:00 267 MW

24-05-2026 12:00 - 13:00 264 MW

24-05-2026 13:00 - 14:00 267 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.

*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-DE border for delivery period 24-05-2026

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:

24-05-2026 11:00 - 12:00 3620 MW

24-05-2026 12:00 - 13:00 3620 MW

24-05-2026 13:00 - 14:00 3620 MW

24-05-2026 14:00 - 15:00 3620 MW

5. Amount of LTTR remaining after curtailment:

24-05-2026 11:00 - 12:00 2933 MW

24-05-2026 12:00 - 13:00 3113 MW

24-05-2026 13:00 - 14:00 3195 MW

24-05-2026 14:00 - 15:00 3184 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.

*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 SI-IT border for delivery period 24-05-2026

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:

24-05-2026 07:00 - 08:00 59 MW

24-05-2026 08:00 - 09:00 59 MW

24-05-2026 09:00 - 10:00 59 MW

24-05-2026 10:00 - 11:00 59 MW

24-05-2026 11:00 - 12:00 59 MW

24-05-2026 12:00 - 13:00 59 MW

24-05-2026 13:00 - 14:00 59 MW

24-05-2026 14:00 - 15:00 59 MW

24-05-2026 15:00 - 16:00 59 MW

24-05-2026 16:00 - 17:00 59 MW

5. Amount of LTTR remaining after curtailment:

24-05-2026 07:00 - 08:00 52 MW

24-05-2026 08:00 - 09:00 23 MW

24-05-2026 09:00 - 10:00 0 MW

24-05-2026 10:00 - 11:00 0 MW

24-05-2026 11:00 - 12:00 0 MW

24-05-2026 12:00 - 13:00 0 MW

24-05-2026 13:00 - 14:00 0 MW

24-05-2026 14:00 - 15:00 0 MW

24-05-2026 15:00 - 16:00 0 MW

24-05-2026 16:00 - 17:00 0 MW

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

7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s)*?

*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 24-05-2026

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:

24-05-2026 09:00 - 10:00 451 MW

24-05-2026 10:00 - 11:00 451 MW

24-05-2026 11:00 - 12:00 451 MW

24-05-2026 12:00 - 13:00 451 MW

24-05-2026 13:00 - 14:00 451 MW

24-05-2026 14:00 - 15:00 451 MW

24-05-2026 15:00 - 16:00 451 MW

24-05-2026 16:00 - 17:00 451 MW

5. Amount of LTTR remaining after curtailment:

24-05-2026 09:00 - 10:00 0 MW

24-05-2026 10:00 - 11:00 0 MW

24-05-2026 11:00 - 12:00 0 MW

24-05-2026 12:00 - 13:00 0 MW

24-05-2026 13:00 - 14:00 0 MW

24-05-2026 14:00 - 15:00 0 MW

24-05-2026 15:00 - 16:00 0 MW

24-05-2026 16:00 - 17:00 0 MW

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

7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s)*?

*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 24-05-2026

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:

24-05-2026 07:00 - 08:00 71 MW

24-05-2026 08:00 - 09:00 71 MW

24-05-2026 09:00 - 10:00 71 MW

24-05-2026 10:00 - 11:00 71 MW

24-05-2026 11:00 - 12:00 71 MW

24-05-2026 12:00 - 13:00 71 MW

24-05-2026 13:00 - 14:00 71 MW

24-05-2026 14:00 - 15:00 71 MW

24-05-2026 15:00 - 16:00 71 MW

24-05-2026 16:00 - 17:00 71 MW

24-05-2026 17:00 - 18:00 71 MW

5. Amount of LTTR remaining after curtailment:

24-05-2026 07:00 - 08:00 55 MW

24-05-2026 08:00 - 09:00 51 MW

24-05-2026 09:00 - 10:00 51 MW

24-05-2026 10:00 - 11:00 51 MW

24-05-2026 11:00 - 12:00 51 MW

24-05-2026 12:00 - 13:00 51 MW

24-05-2026 13:00 - 14:00 51 MW

24-05-2026 14:00 - 15:00 51 MW

24-05-2026 15:00 - 16:00 51 MW

24-05-2026 16:00 - 17:00 51 MW

24-05-2026 17:00 - 18:00 51 MW

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

7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s)*?

*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 IF1-GB-FR border for delivery period 05-06-2026

by JAO

1. TSO(s)*:

RNP

2. Identification of affected Long Term Transmission Rights:

IF1-GB-FR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

05-06-2026 00:00 - 01:00 1690 MW

05-06-2026 01:00 - 02:00 1690 MW

05-06-2026 02:00 - 03:00 1690 MW

05-06-2026 03:00 - 04:00 1690 MW

05-06-2026 04:00 - 05:00 1690 MW

05-06-2026 05:00 - 06:00 1690 MW

05-06-2026 06:00 - 07:00 1690 MW

05-06-2026 07:00 - 08:00 1690 MW

05-06-2026 08:00 - 09:00 1690 MW

05-06-2026 09:00 - 10:00 1690 MW

05-06-2026 10:00 - 11:00 1690 MW

05-06-2026 11:00 - 12:00 1690 MW

05-06-2026 12:00 - 13:00 1690 MW

05-06-2026 13:00 - 14:00 1690 MW

05-06-2026 14:00 - 15:00 1690 MW

05-06-2026 15:00 - 16:00 1690 MW

05-06-2026 16:00 - 17:00 1690 MW

05-06-2026 17:00 - 18:00 1690 MW

05-06-2026 18:00 - 19:00 1690 MW

05-06-2026 19:00 - 20:00 1690 MW

05-06-2026 20:00 - 21:00 1690 MW

05-06-2026 21:00 - 22:00 1690 MW

05-06-2026 22:00 - 23:00 1690 MW

05-06-2026 23:00 - 24:00 1690 MW

5. Amount of LTTR remaining after curtailment:

05-06-2026 00:00 - 01:00 1434 MW

05-06-2026 01:00 - 02:00 1434 MW

05-06-2026 02:00 - 03:00 1434 MW

05-06-2026 03:00 - 04:00 1434 MW

05-06-2026 04:00 - 05:00 1434 MW

05-06-2026 05:00 - 06:00 1434 MW

05-06-2026 06:00 - 07:00 1434 MW

05-06-2026 07:00 - 08:00 1434 MW

05-06-2026 08:00 - 09:00 1434 MW

05-06-2026 09:00 - 10:00 1434 MW

05-06-2026 10:00 - 11:00 1434 MW

05-06-2026 11:00 - 12:00 1434 MW

05-06-2026 12:00 - 13:00 1434 MW

05-06-2026 13:00 - 14:00 1434 MW

05-06-2026 14:00 - 15:00 1434 MW

05-06-2026 15:00 - 16:00 1434 MW

05-06-2026 16:00 - 17:00 1434 MW

05-06-2026 17:00 - 18:00 1434 MW

05-06-2026 18:00 - 19:00 1434 MW

05-06-2026 19:00 - 20:00 1434 MW

05-06-2026 20:00 - 21:00 1434 MW

05-06-2026 21:00 - 22:00 1434 MW

05-06-2026 22:00 - 23:00 1434 MW

05-06-2026 23:00 - 24:00 1434 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

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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Frequently asked questions

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

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