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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

LTFBA External Parallel Run - Results available for Yearly 2026

by JAO
We would like to inform you that on the 24th of November 2025, the External Parallel Run for Core long-term flow-based(LTFB) implementation has started. The Long-term flow-based allocation results for the Yearly 2026 LTFBA auction are now available on our website via the following link: https://www.jao.eu/LTFBA-external-parallel-run The results of the coordinated capacity calculation runs are available on our Publication Tool: https://parallelrun-publicationtool.jao.eu/coreLtfba/ Kind regards, JAO Operations

Capacity Curtailment on the IT-CH border for delivery period 05-12-2025

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-CH

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

05-12-2025 07:00 - 08:00 929 MW

05-12-2025 08:00 - 09:00 929 MW

05-12-2025 09:00 - 10:00 929 MW

05-12-2025 10:00 - 11:00 929 MW

05-12-2025 11:00 - 12:00 929 MW

05-12-2025 15:00 - 16:00 929 MW

05-12-2025 16:00 - 17:00 929 MW

05-12-2025 17:00 - 18:00 929 MW

05-12-2025 18:00 - 19:00 929 MW

05-12-2025 19:00 - 20:00 929 MW

5. Amount of LTTR remaining after curtailment:

05-12-2025 07:00 - 08:00 572 MW

05-12-2025 08:00 - 09:00 0 MW

05-12-2025 09:00 - 10:00 0 MW

05-12-2025 10:00 - 11:00 0 MW

05-12-2025 11:00 - 12:00 611 MW

05-12-2025 15:00 - 16:00 586 MW

05-12-2025 16:00 - 17:00 0 MW

05-12-2025 17:00 - 18:00 0 MW

05-12-2025 18:00 - 19:00 0 MW

05-12-2025 19:00 - 20:00 589 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 IT-FR border for delivery period 05-12-2025

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:

05-12-2025 06:00 - 07:00 1495 MW

05-12-2025 07:00 - 08:00 1495 MW

05-12-2025 08:00 - 09:00 1495 MW

05-12-2025 09:00 - 10:00 1495 MW

05-12-2025 10:00 - 11:00 1495 MW

05-12-2025 11:00 - 12:00 1495 MW

05-12-2025 12:00 - 13:00 1495 MW

05-12-2025 14:00 - 15:00 1495 MW

05-12-2025 15:00 - 16:00 1495 MW

05-12-2025 16:00 - 17:00 1495 MW

05-12-2025 17:00 - 18:00 1495 MW

05-12-2025 18:00 - 19:00 1495 MW

05-12-2025 19:00 - 20:00 1495 MW

05-12-2025 20:00 - 21:00 1495 MW

5. Amount of LTTR remaining after curtailment:

05-12-2025 06:00 - 07:00 1301 MW

05-12-2025 07:00 - 08:00 625 MW

05-12-2025 08:00 - 09:00 0 MW

05-12-2025 09:00 - 10:00 0 MW

05-12-2025 10:00 - 11:00 0 MW

05-12-2025 11:00 - 12:00 664 MW

05-12-2025 12:00 - 13:00 1308 MW

05-12-2025 14:00 - 15:00 1308 MW

05-12-2025 15:00 - 16:00 637 MW

05-12-2025 16:00 - 17:00 0 MW

05-12-2025 17:00 - 18:00 0 MW

05-12-2025 18:00 - 19:00 0 MW

05-12-2025 19:00 - 20:00 637 MW

05-12-2025 20:00 - 21:00 1296 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 IT-SI border for delivery period 05-12-2025

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:

05-12-2025 07:00 - 08:00 334 MW

05-12-2025 08:00 - 09:00 334 MW

05-12-2025 09:00 - 10:00 334 MW

05-12-2025 10:00 - 11:00 334 MW

05-12-2025 11:00 - 12:00 334 MW

05-12-2025 15:00 - 16:00 334 MW

05-12-2025 16:00 - 17:00 334 MW

05-12-2025 17:00 - 18:00 334 MW

05-12-2025 18:00 - 19:00 334 MW

05-12-2025 19:00 - 20:00 334 MW

5. Amount of LTTR remaining after curtailment:

05-12-2025 07:00 - 08:00 221 MW

05-12-2025 08:00 - 09:00 0 MW

05-12-2025 09:00 - 10:00 0 MW

05-12-2025 10:00 - 11:00 0 MW

05-12-2025 11:00 - 12:00 144 MW

05-12-2025 15:00 - 16:00 194 MW

05-12-2025 16:00 - 17:00 0 MW

05-12-2025 17:00 - 18:00 0 MW

05-12-2025 18:00 - 19:00 0 MW

05-12-2025 19:00 - 20:00 192 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 05-12-2025

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:

05-12-2025 07:00 - 08:00 204 MW

05-12-2025 08:00 - 09:00 204 MW

05-12-2025 09:00 - 10:00 204 MW

05-12-2025 10:00 - 11:00 204 MW

05-12-2025 11:00 - 12:00 204 MW

05-12-2025 12:00 - 13:00 204 MW

05-12-2025 13:00 - 14:00 204 MW

05-12-2025 14:00 - 15:00 204 MW

05-12-2025 15:00 - 16:00 204 MW

05-12-2025 16:00 - 17:00 204 MW

05-12-2025 17:00 - 18:00 204 MW

5. Amount of LTTR remaining after curtailment:

05-12-2025 07:00 - 08:00 134 MW

05-12-2025 08:00 - 09:00 118 MW

05-12-2025 09:00 - 10:00 118 MW

05-12-2025 10:00 - 11:00 118 MW

05-12-2025 11:00 - 12:00 118 MW

05-12-2025 12:00 - 13:00 134 MW

05-12-2025 13:00 - 14:00 134 MW

05-12-2025 14:00 - 15:00 134 MW

05-12-2025 15:00 - 16:00 128 MW

05-12-2025 16:00 - 17:00 128 MW

05-12-2025 17:00 - 18:00 128 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 IT-AT border for delivery period 05-12-2025

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:

05-12-2025 06:00 - 07:00 81 MW

05-12-2025 07:00 - 08:00 81 MW

05-12-2025 08:00 - 09:00 81 MW

05-12-2025 09:00 - 10:00 81 MW

05-12-2025 10:00 - 11:00 81 MW

05-12-2025 11:00 - 12:00 81 MW

05-12-2025 12:00 - 13:00 81 MW

05-12-2025 14:00 - 15:00 81 MW

05-12-2025 15:00 - 16:00 81 MW

05-12-2025 16:00 - 17:00 81 MW

05-12-2025 17:00 - 18:00 81 MW

05-12-2025 18:00 - 19:00 81 MW

05-12-2025 19:00 - 20:00 81 MW

05-12-2025 20:00 - 21:00 81 MW

5. Amount of LTTR remaining after curtailment:

05-12-2025 06:00 - 07:00 62 MW

05-12-2025 07:00 - 08:00 26 MW

05-12-2025 08:00 - 09:00 0 MW

05-12-2025 09:00 - 10:00 0 MW

05-12-2025 10:00 - 11:00 0 MW

05-12-2025 11:00 - 12:00 16 MW

05-12-2025 12:00 - 13:00 53 MW

05-12-2025 14:00 - 15:00 53 MW

05-12-2025 15:00 - 16:00 25 MW

05-12-2025 16:00 - 17:00 0 MW

05-12-2025 17:00 - 18:00 0 MW

05-12-2025 18:00 - 19:00 0 MW

05-12-2025 19:00 - 20:00 26 MW

05-12-2025 20:00 - 21:00 60 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 DE-AT border for delivery period 05-12-2025

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

DE-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

05-12-2025 00:00 - 01:00 4545 MW

05-12-2025 01:00 - 02:00 4545 MW

05-12-2025 02:00 - 03:00 4545 MW

05-12-2025 03:00 - 04:00 4545 MW

05-12-2025 04:00 - 05:00 4545 MW

05-12-2025 05:00 - 06:00 4545 MW

05-12-2025 06:00 - 07:00 4545 MW

05-12-2025 07:00 - 08:00 4545 MW

05-12-2025 08:00 - 09:00 4545 MW

05-12-2025 09:00 - 10:00 4545 MW

05-12-2025 10:00 - 11:00 4545 MW

05-12-2025 11:00 - 12:00 4545 MW

05-12-2025 12:00 - 13:00 4545 MW

05-12-2025 13:00 - 14:00 4545 MW

05-12-2025 14:00 - 15:00 4545 MW

05-12-2025 15:00 - 16:00 4545 MW

05-12-2025 16:00 - 17:00 4545 MW

05-12-2025 17:00 - 18:00 4545 MW

05-12-2025 18:00 - 19:00 4545 MW

05-12-2025 19:00 - 20:00 4545 MW

05-12-2025 20:00 - 21:00 4545 MW

05-12-2025 21:00 - 22:00 4545 MW

05-12-2025 22:00 - 23:00 4545 MW

05-12-2025 23:00 - 24:00 4545 MW

5. Amount of LTTR remaining after curtailment:

05-12-2025 00:00 - 01:00 3979 MW

05-12-2025 01:00 - 02:00 3979 MW

05-12-2025 02:00 - 03:00 3979 MW

05-12-2025 03:00 - 04:00 3979 MW

05-12-2025 04:00 - 05:00 3979 MW

05-12-2025 05:00 - 06:00 3979 MW

05-12-2025 06:00 - 07:00 3979 MW

05-12-2025 07:00 - 08:00 3979 MW

05-12-2025 08:00 - 09:00 3979 MW

05-12-2025 09:00 - 10:00 3979 MW

05-12-2025 10:00 - 11:00 3979 MW

05-12-2025 11:00 - 12:00 3979 MW

05-12-2025 12:00 - 13:00 3979 MW

05-12-2025 13:00 - 14:00 3979 MW

05-12-2025 14:00 - 15:00 3979 MW

05-12-2025 15:00 - 16:00 3979 MW

05-12-2025 16:00 - 17:00 3979 MW

05-12-2025 17:00 - 18:00 3979 MW

05-12-2025 18:00 - 19:00 3979 MW

05-12-2025 19:00 - 20:00 3979 MW

05-12-2025 20:00 - 21:00 3979 MW

05-12-2025 21:00 - 22:00 3979 MW

05-12-2025 22:00 - 23:00 3979 MW

05-12-2025 23:00 - 24:00 3979 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.

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

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