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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 ME-IT border for delivery period 15-03-2026

by JAO

1. TSO(s)*:

CGES

2. Identification of affected Long Term Transmission Rights:

ME-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

15-03-2026 08:00 - 09:00 400 MW

15-03-2026 09:00 - 10:00 400 MW

15-03-2026 10:00 - 11:00 400 MW

15-03-2026 11:00 - 12:00 400 MW

15-03-2026 12:00 - 13:00 400 MW

15-03-2026 13:00 - 14:00 400 MW

15-03-2026 14:00 - 15:00 400 MW

15-03-2026 15:00 - 16:00 400 MW

15-03-2026 16:00 - 17:00 400 MW

5. Amount of LTTR remaining after curtailment:

15-03-2026 08:00 - 09:00 0 MW

15-03-2026 09:00 - 10:00 0 MW

15-03-2026 10:00 - 11:00 0 MW

15-03-2026 11:00 - 12:00 0 MW

15-03-2026 12:00 - 13:00 0 MW

15-03-2026 13:00 - 14:00 0 MW

15-03-2026 14:00 - 15:00 0 MW

15-03-2026 15:00 - 16:00 0 MW

15-03-2026 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*:

HVDC Monita

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 SI-AT border for delivery period 14-03-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

SI-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

14-03-2026 07:00 - 08:00 430 MW

14-03-2026 08:00 - 09:00 430 MW

14-03-2026 09:00 - 10:00 430 MW

14-03-2026 10:00 - 11:00 430 MW

14-03-2026 11:00 - 12:00 430 MW

14-03-2026 12:00 - 13:00 430 MW

14-03-2026 13:00 - 14:00 430 MW

14-03-2026 14:00 - 15:00 430 MW

14-03-2026 15:00 - 16:00 430 MW

14-03-2026 16:00 - 17:00 430 MW

5. Amount of LTTR remaining after curtailment:

14-03-2026 07:00 - 08:00 123 MW

14-03-2026 08:00 - 09:00 121 MW

14-03-2026 09:00 - 10:00 106 MW

14-03-2026 10:00 - 11:00 84 MW

14-03-2026 11:00 - 12:00 87 MW

14-03-2026 12:00 - 13:00 89 MW

14-03-2026 13:00 - 14:00 85 MW

14-03-2026 14:00 - 15:00 95 MW

14-03-2026 15:00 - 16:00 106 MW

14-03-2026 16:00 - 17:00 123 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 14-03-2026

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:

14-03-2026 07:00 - 08:00 340 MW

14-03-2026 08:00 - 09:00 340 MW

14-03-2026 09:00 - 10:00 340 MW

14-03-2026 10:00 - 11:00 340 MW

14-03-2026 11:00 - 12:00 340 MW

14-03-2026 12:00 - 13:00 340 MW

14-03-2026 13:00 - 14:00 340 MW

14-03-2026 14:00 - 15:00 340 MW

14-03-2026 15:00 - 16:00 340 MW

14-03-2026 16:00 - 17:00 340 MW

5. Amount of LTTR remaining after curtailment:

14-03-2026 07:00 - 08:00 209 MW

14-03-2026 08:00 - 09:00 203 MW

14-03-2026 09:00 - 10:00 181 MW

14-03-2026 10:00 - 11:00 143 MW

14-03-2026 11:00 - 12:00 148 MW

14-03-2026 12:00 - 13:00 149 MW

14-03-2026 13:00 - 14:00 145 MW

14-03-2026 14:00 - 15:00 163 MW

14-03-2026 15:00 - 16:00 163 MW

14-03-2026 16:00 - 17:00 180 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-CZ border for delivery period 14-03-2026

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:

14-03-2026 07:00 - 08:00 350 MW

14-03-2026 08:00 - 09:00 350 MW

14-03-2026 09:00 - 10:00 350 MW

14-03-2026 10:00 - 11:00 350 MW

14-03-2026 11:00 - 12:00 350 MW

14-03-2026 12:00 - 13:00 350 MW

14-03-2026 13:00 - 14:00 350 MW

14-03-2026 14:00 - 15:00 350 MW

14-03-2026 15:00 - 16:00 350 MW

14-03-2026 16:00 - 17:00 350 MW

5. Amount of LTTR remaining after curtailment:

14-03-2026 07:00 - 08:00 71 MW

14-03-2026 08:00 - 09:00 37 MW

14-03-2026 09:00 - 10:00 37 MW

14-03-2026 10:00 - 11:00 37 MW

14-03-2026 11:00 - 12:00 39 MW

14-03-2026 12:00 - 13:00 52 MW

14-03-2026 13:00 - 14:00 52 MW

14-03-2026 14:00 - 15:00 52 MW

14-03-2026 15:00 - 16:00 52 MW

14-03-2026 16:00 - 17:00 111 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 14-03-2026

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:

14-03-2026 07:00 - 08:00 4420 MW

14-03-2026 08:00 - 09:00 4420 MW

14-03-2026 09:00 - 10:00 4420 MW

14-03-2026 10:00 - 11:00 4420 MW

14-03-2026 11:00 - 12:00 4420 MW

14-03-2026 12:00 - 13:00 4420 MW

14-03-2026 13:00 - 14:00 4420 MW

14-03-2026 14:00 - 15:00 4420 MW

14-03-2026 15:00 - 16:00 4420 MW

14-03-2026 16:00 - 17:00 4420 MW

5. Amount of LTTR remaining after curtailment:

14-03-2026 07:00 - 08:00 1005 MW

14-03-2026 08:00 - 09:00 599 MW

14-03-2026 09:00 - 10:00 595 MW

14-03-2026 10:00 - 11:00 606 MW

14-03-2026 11:00 - 12:00 639 MW

14-03-2026 12:00 - 13:00 794 MW

14-03-2026 13:00 - 14:00 819 MW

14-03-2026 14:00 - 15:00 817 MW

14-03-2026 15:00 - 16:00 816 MW

14-03-2026 16:00 - 17:00 1503 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

Open Call Meeting Minutes – 03 March 2026

by JAO

Dear Market Participants,

The meeting minutes of the latest Open Call is now available. Please find it attached.

Furthermore, let us kindly invite you completing this survey allowing us to improve our service.

Kind regards,

JAO Customer Service Team

Capacity Curtailment on the EE-LV border for delivery period 13-03-2026

by JAO

1. TSO(s)*:

ELERING

2. Identification of affected Long Term Transmission Rights:

EE-LV

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

13-03-2026 11:00 - 12:00 449 MW

13-03-2026 12:00 - 13:00 449 MW

13-03-2026 13:00 - 14:00 449 MW

13-03-2026 15:00 - 16:00 449 MW

13-03-2026 16:00 - 17:00 449 MW

5. Amount of LTTR remaining after curtailment:

13-03-2026 11:00 - 12:00 414 MW

13-03-2026 12:00 - 13:00 418 MW

13-03-2026 13:00 - 14:00 416 MW

13-03-2026 15:00 - 16:00 414 MW

13-03-2026 16:00 - 17:00 414 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

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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Frequently asked questions

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

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