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

by JAO

1. TSO(s)*:

National Grid Interconnectors Limited (NGIC) and RTE EDF Transport S.A. (RTE)

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:

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

5. Amount of LTTR remaining after curtailment:

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

06-06-2026 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

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

by JAO

1. TSO(s)*:

National Grid Interconnectors Limited (NGIC) and RTE EDF Transport S.A. (RTE)

2. Identification of affected Long Term Transmission Rights:

IF1-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 1700 MW

06-06-2026 01:00 - 02:00 1700 MW

06-06-2026 02:00 - 03:00 1700 MW

06-06-2026 03:00 - 04:00 1700 MW

06-06-2026 04:00 - 05:00 1700 MW

06-06-2026 05:00 - 06:00 1700 MW

06-06-2026 06:00 - 07:00 1700 MW

06-06-2026 07:00 - 08:00 1700 MW

06-06-2026 08:00 - 09:00 1700 MW

06-06-2026 09:00 - 10:00 1700 MW

06-06-2026 10:00 - 11:00 1700 MW

06-06-2026 11:00 - 12:00 1700 MW

06-06-2026 12:00 - 13:00 1700 MW

06-06-2026 13:00 - 14:00 1700 MW

06-06-2026 14:00 - 15:00 1700 MW

06-06-2026 15:00 - 16:00 1700 MW

06-06-2026 16:00 - 17:00 1700 MW

06-06-2026 17:00 - 18:00 1700 MW

06-06-2026 18:00 - 19:00 1700 MW

06-06-2026 19:00 - 20:00 1700 MW

06-06-2026 20:00 - 21:00 1700 MW

06-06-2026 21:00 - 22:00 1700 MW

06-06-2026 22:00 - 23:00 1700 MW

06-06-2026 23:00 - 24:00 1700 MW

5. Amount of LTTR remaining after curtailment:

06-06-2026 00:00 - 01:00 1452 MW

06-06-2026 01:00 - 02:00 1452 MW

06-06-2026 02:00 - 03:00 1452 MW

06-06-2026 03:00 - 04:00 1452 MW

06-06-2026 04:00 - 05:00 1452 MW

06-06-2026 05:00 - 06:00 1452 MW

06-06-2026 06:00 - 07:00 1452 MW

06-06-2026 07:00 - 08:00 1452 MW

06-06-2026 08:00 - 09:00 1452 MW

06-06-2026 09:00 - 10:00 1452 MW

06-06-2026 10:00 - 11:00 1452 MW

06-06-2026 11:00 - 12:00 1452 MW

06-06-2026 12:00 - 13:00 1452 MW

06-06-2026 13:00 - 14:00 1452 MW

06-06-2026 14:00 - 15:00 1452 MW

06-06-2026 15:00 - 16:00 1452 MW

06-06-2026 16:00 - 17:00 1452 MW

06-06-2026 17:00 - 18:00 1452 MW

06-06-2026 18:00 - 19:00 1452 MW

06-06-2026 19:00 - 20:00 1452 MW

06-06-2026 20:00 - 21:00 1452 MW

06-06-2026 21:00 - 22:00 1452 MW

06-06-2026 22:00 - 23:00 1452 MW

06-06-2026 23:00 - 24:00 1452 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

*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 DK-NL border for delivery period 25-05-2026

by JAO

1. TSO(s)*:

TenneT TSO B.V.

2. Identification of affected Long Term Transmission Rights:

DK-NL

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

25-05-2026 08:00 - 09:00 199 MW

25-05-2026 09:00 - 10:00 199 MW

25-05-2026 10:00 - 11:00 199 MW

25-05-2026 11:00 - 12:00 199 MW

25-05-2026 12:00 - 13:00 199 MW

25-05-2026 13:00 - 14:00 199 MW

25-05-2026 14:00 - 15:00 199 MW

25-05-2026 15:00 - 16:00 199 MW

25-05-2026 16:00 - 17:00 199 MW

25-05-2026 17:00 - 18:00 199 MW

5. Amount of LTTR remaining after curtailment:

25-05-2026 08:00 - 09:00 0 MW

25-05-2026 09:00 - 10:00 0 MW

25-05-2026 10:00 - 11:00 0 MW

25-05-2026 11:00 - 12:00 0 MW

25-05-2026 12:00 - 13:00 0 MW

25-05-2026 13:00 - 14:00 0 MW

25-05-2026 14:00 - 15:00 0 MW

25-05-2026 15:00 - 16:00 0 MW

25-05-2026 16:00 - 17:00 0 MW

25-05-2026 17:00 - 18:00 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)*?

The remedial actions considered were assessed as not sufficient or ineffective 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 ME-IT border for delivery period 25-05-2026

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:

25-05-2026 12:00 - 13:00 400 MW

25-05-2026 13:00 - 14:00 400 MW

25-05-2026 14:00 - 15:00 400 MW

5. Amount of LTTR remaining after curtailment:

25-05-2026 12:00 - 13:00 0 MW

25-05-2026 13:00 - 14:00 0 MW

25-05-2026 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*:

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 EE-LV border for delivery period 24-05-2026

by JAO

1. TSO(s)*:

AST

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:

24-05-2026 00:00 - 01:00 440 MW

24-05-2026 05:00 - 06:00 440 MW

24-05-2026 07:00 - 08:00 440 MW

24-05-2026 08:00 - 09:00 440 MW

24-05-2026 09:00 - 10:00 440 MW

24-05-2026 10:00 - 11:00 440 MW

24-05-2026 11:00 - 12:00 440 MW

24-05-2026 12:00 - 13:00 440 MW

24-05-2026 13:00 - 14:00 440 MW

24-05-2026 14:00 - 15:00 440 MW

24-05-2026 15:00 - 16:00 440 MW

24-05-2026 16:00 - 17:00 440 MW

24-05-2026 17:00 - 18:00 440 MW

24-05-2026 18:00 - 19:00 440 MW

24-05-2026 19:00 - 20:00 440 MW

24-05-2026 20:00 - 21:00 440 MW

24-05-2026 21:00 - 22:00 440 MW

24-05-2026 22:00 - 23:00 440 MW

24-05-2026 23:00 - 24:00 440 MW

5. Amount of LTTR remaining after curtailment:

24-05-2026 00:00 - 01:00 403 MW

24-05-2026 05:00 - 06:00 382 MW

24-05-2026 07:00 - 08:00 385 MW

24-05-2026 08:00 - 09:00 382 MW

24-05-2026 09:00 - 10:00 380 MW

24-05-2026 10:00 - 11:00 378 MW

24-05-2026 11:00 - 12:00 378 MW

24-05-2026 12:00 - 13:00 378 MW

24-05-2026 13:00 - 14:00 378 MW

24-05-2026 14:00 - 15:00 378 MW

24-05-2026 15:00 - 16:00 378 MW

24-05-2026 16:00 - 17:00 378 MW

24-05-2026 17:00 - 18:00 380 MW

24-05-2026 18:00 - 19:00 380 MW

24-05-2026 19:00 - 20:00 383 MW

24-05-2026 20:00 - 21:00 396 MW

24-05-2026 21:00 - 22:00 398 MW

24-05-2026 22:00 - 23:00 398 MW

24-05-2026 23:00 - 24:00 400 MW

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

Nord Pool - UMM Platform as well as the capacity already allocated on The Baltic balancing Market for balancing capacity sharing at Transparency Platform

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

There are no alternatives to the curtailment of the affected LTTRs.

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

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:

24-05-2026 09:00 - 10:00 282 MW

24-05-2026 10:00 - 11:00 282 MW

24-05-2026 11:00 - 12:00 282 MW

24-05-2026 12:00 - 13:00 282 MW

24-05-2026 13:00 - 14:00 282 MW

24-05-2026 14:00 - 15:00 282 MW

24-05-2026 15:00 - 16:00 282 MW

24-05-2026 16:00 - 17:00 282 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

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

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:

24-05-2026 11:00 - 12:00 370 MW

24-05-2026 12:00 - 13:00 370 MW

24-05-2026 13:00 - 14:00 370 MW

24-05-2026 14:00 - 15:00 370 MW

5. Amount of LTTR remaining after curtailment:

24-05-2026 11:00 - 12:00 216 MW

24-05-2026 12:00 - 13:00 198 MW

24-05-2026 13:00 - 14:00 217 MW

24-05-2026 14:00 - 15:00 217 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

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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