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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

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 IF1-GB-FR border for delivery period 15-11-2026

Published: 01/11/2026 | 15:50 by JAO
Capacity Curtailment on the IF1-FR-GB border for delivery period 15-11-2026

Published: 01/11/2026 | 15:49 by JAO
Capacity Curtailment on the NSL-GB-N2 border for delivery period 02-11-2026

Published: 01/11/2026 | 08:46 by JAO
Capacity Curtailment on the GR-IT border for delivery period 02-11-2026

Published: 01/11/2026 | 07:56 by JAO
Capacity Curtailment on the IT-GR border for delivery period 02-11-2026

Published: 01/11/2026 | 07:55 by JAO
Capacity Curtailment on the AT-IT border for delivery period 02-11-2026

Published: 01/11/2026 | 07:54 by JAO
Capacity Curtailment on the IT-AT border for delivery period 02-11-2026

Published: 01/11/2026 | 07:53 by JAO

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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:

15-11-2026 00:00 - 01:00 1200 MW

15-11-2026 01:00 - 02:00 1200 MW

15-11-2026 02:00 - 03:00 1200 MW

15-11-2026 03:00 - 04:00 1200 MW

15-11-2026 04:00 - 05:00 1200 MW

15-11-2026 05:00 - 06:00 1200 MW

15-11-2026 06:00 - 07:00 1200 MW

15-11-2026 07:00 - 08:00 1200 MW

15-11-2026 08:00 - 09:00 1200 MW

15-11-2026 09:00 - 10:00 1200 MW

15-11-2026 10:00 - 11:00 1200 MW

15-11-2026 11:00 - 12:00 1200 MW

15-11-2026 12:00 - 13:00 1200 MW

15-11-2026 13:00 - 14:00 1200 MW

15-11-2026 14:00 - 15:00 1200 MW

15-11-2026 15:00 - 16:00 1200 MW

15-11-2026 16:00 - 17:00 1200 MW

15-11-2026 17:00 - 18:00 1200 MW

15-11-2026 18:00 - 19:00 1200 MW

15-11-2026 19:00 - 20:00 1200 MW

15-11-2026 20:00 - 21:00 1200 MW

15-11-2026 21:00 - 22:00 1200 MW

15-11-2026 22:00 - 23:00 1200 MW

15-11-2026 23:00 - 24:00 1200 MW

5. Amount of LTTR remaining after curtailment:

15-11-2026 00:00 - 01:00 468 MW

15-11-2026 01:00 - 02:00 468 MW

15-11-2026 02:00 - 03:00 468 MW

15-11-2026 03:00 - 04:00 468 MW

15-11-2026 04:00 - 05:00 468 MW

15-11-2026 05:00 - 06:00 468 MW

15-11-2026 06:00 - 07:00 468 MW

15-11-2026 07:00 - 08:00 468 MW

15-11-2026 08:00 - 09:00 468 MW

15-11-2026 09:00 - 10:00 468 MW

15-11-2026 10:00 - 11:00 468 MW

15-11-2026 11:00 - 12:00 468 MW

15-11-2026 12:00 - 13:00 468 MW

15-11-2026 13:00 - 14:00 468 MW

15-11-2026 14:00 - 15:00 468 MW

15-11-2026 15:00 - 16:00 468 MW

15-11-2026 16:00 - 17:00 468 MW

15-11-2026 17:00 - 18:00 468 MW

15-11-2026 18:00 - 19:00 468 MW

15-11-2026 19:00 - 20:00 468 MW

15-11-2026 20:00 - 21:00 468 MW

15-11-2026 21:00 - 22:00 468 MW

15-11-2026 22:00 - 23:00 468 MW

15-11-2026 23:00 - 24:00 468 MW

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

Network Security

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

The available remedial actions were assessed as insufficient or ineffective to avoid the violation of operational security limits

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

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:

15-11-2026 00:00 - 01:00 1200 MW

15-11-2026 01:00 - 02:00 1200 MW

15-11-2026 02:00 - 03:00 1200 MW

15-11-2026 03:00 - 04:00 1200 MW

15-11-2026 04:00 - 05:00 1200 MW

15-11-2026 05:00 - 06:00 1200 MW

15-11-2026 06:00 - 07:00 1200 MW

15-11-2026 07:00 - 08:00 1200 MW

15-11-2026 08:00 - 09:00 1200 MW

15-11-2026 09:00 - 10:00 1200 MW

15-11-2026 10:00 - 11:00 1200 MW

15-11-2026 11:00 - 12:00 1200 MW

15-11-2026 12:00 - 13:00 1200 MW

15-11-2026 13:00 - 14:00 1200 MW

15-11-2026 14:00 - 15:00 1200 MW

15-11-2026 15:00 - 16:00 1200 MW

15-11-2026 16:00 - 17:00 1200 MW

15-11-2026 17:00 - 18:00 1200 MW

15-11-2026 18:00 - 19:00 1200 MW

15-11-2026 19:00 - 20:00 1200 MW

15-11-2026 20:00 - 21:00 1200 MW

15-11-2026 21:00 - 22:00 1200 MW

15-11-2026 22:00 - 23:00 1200 MW

15-11-2026 23:00 - 24:00 1200 MW

5. Amount of LTTR remaining after curtailment:

15-11-2026 00:00 - 01:00 462 MW

15-11-2026 01:00 - 02:00 462 MW

15-11-2026 02:00 - 03:00 462 MW

15-11-2026 03:00 - 04:00 462 MW

15-11-2026 04:00 - 05:00 462 MW

15-11-2026 05:00 - 06:00 462 MW

15-11-2026 06:00 - 07:00 462 MW

15-11-2026 07:00 - 08:00 462 MW

15-11-2026 08:00 - 09:00 462 MW

15-11-2026 09:00 - 10:00 462 MW

15-11-2026 10:00 - 11:00 462 MW

15-11-2026 11:00 - 12:00 462 MW

15-11-2026 12:00 - 13:00 462 MW

15-11-2026 13:00 - 14:00 462 MW

15-11-2026 14:00 - 15:00 462 MW

15-11-2026 15:00 - 16:00 462 MW

15-11-2026 16:00 - 17:00 462 MW

15-11-2026 17:00 - 18:00 462 MW

15-11-2026 18:00 - 19:00 462 MW

15-11-2026 19:00 - 20:00 462 MW

15-11-2026 20:00 - 21:00 462 MW

15-11-2026 21:00 - 22:00 462 MW

15-11-2026 22:00 - 23:00 462 MW

15-11-2026 23:00 - 24:00 462 MW

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

Network Security

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

The available remedial actions were assessed as insufficient or ineffective to avoid the violation of operational security limits

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

1. TSO(s)*:

National Grid Interconnectors Limited (NGIC) and Statnett

2. Identification of affected Long Term Transmission Rights:

NSL-GB-N2

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

02-11-2026 17:00 - 18:00 98 MW

02-11-2026 18:00 - 19:00 98 MW

02-11-2026 19:00 - 20:00 98 MW

02-11-2026 20:00 - 21:00 98 MW

02-11-2026 21:00 - 22:00 98 MW

5. Amount of LTTR remaining after curtailment:

02-11-2026 17:00 - 18:00 0 MW

02-11-2026 18:00 - 19:00 0 MW

02-11-2026 19:00 - 20:00 0 MW

02-11-2026 20:00 - 21:00 0 MW

02-11-2026 21:00 - 22:00 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)*?

NTC restrictions

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

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

GR-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

02-11-2026 00:00 - 01:00 499 MW

02-11-2026 01:00 - 02:00 499 MW

02-11-2026 02:00 - 03:00 499 MW

02-11-2026 03:00 - 04:00 499 MW

02-11-2026 04:00 - 05:00 499 MW

02-11-2026 05:00 - 06:00 499 MW

02-11-2026 06:00 - 07:00 499 MW

02-11-2026 07:00 - 08:00 499 MW

02-11-2026 08:00 - 09:00 499 MW

02-11-2026 09:00 - 10:00 499 MW

02-11-2026 10:00 - 11:00 499 MW

02-11-2026 11:00 - 12:00 499 MW

02-11-2026 12:00 - 13:00 499 MW

02-11-2026 13:00 - 14:00 499 MW

02-11-2026 14:00 - 15:00 499 MW

02-11-2026 15:00 - 16:00 499 MW

02-11-2026 16:00 - 17:00 499 MW

02-11-2026 17:00 - 18:00 499 MW

02-11-2026 18:00 - 19:00 499 MW

02-11-2026 19:00 - 20:00 499 MW

02-11-2026 20:00 - 21:00 499 MW

02-11-2026 21:00 - 22:00 499 MW

02-11-2026 22:00 - 23:00 499 MW

02-11-2026 23:00 - 24:00 499 MW

5. Amount of LTTR remaining after curtailment:

02-11-2026 00:00 - 01:00 0 MW

02-11-2026 01:00 - 02:00 0 MW

02-11-2026 02:00 - 03:00 0 MW

02-11-2026 03:00 - 04:00 0 MW

02-11-2026 04:00 - 05:00 0 MW

02-11-2026 05:00 - 06:00 0 MW

02-11-2026 06:00 - 07:00 0 MW

02-11-2026 07:00 - 08:00 0 MW

02-11-2026 08:00 - 09:00 0 MW

02-11-2026 09:00 - 10:00 0 MW

02-11-2026 10:00 - 11:00 0 MW

02-11-2026 11:00 - 12:00 0 MW

02-11-2026 12:00 - 13:00 0 MW

02-11-2026 13:00 - 14:00 0 MW

02-11-2026 14:00 - 15:00 0 MW

02-11-2026 15:00 - 16:00 0 MW

02-11-2026 16:00 - 17:00 0 MW

02-11-2026 17:00 - 18:00 0 MW

02-11-2026 18:00 - 19:00 0 MW

02-11-2026 19:00 - 20:00 0 MW

02-11-2026 20:00 - 21:00 0 MW

02-11-2026 21:00 - 22:00 0 MW

02-11-2026 22:00 - 23:00 0 MW

02-11-2026 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*:

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

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-GR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

02-11-2026 00:00 - 01:00 500 MW

02-11-2026 01:00 - 02:00 500 MW

02-11-2026 02:00 - 03:00 500 MW

02-11-2026 03:00 - 04:00 500 MW

02-11-2026 04:00 - 05:00 500 MW

02-11-2026 05:00 - 06:00 500 MW

02-11-2026 06:00 - 07:00 500 MW

02-11-2026 07:00 - 08:00 500 MW

02-11-2026 08:00 - 09:00 500 MW

02-11-2026 09:00 - 10:00 500 MW

02-11-2026 10:00 - 11:00 500 MW

02-11-2026 11:00 - 12:00 500 MW

02-11-2026 12:00 - 13:00 500 MW

02-11-2026 13:00 - 14:00 500 MW

02-11-2026 14:00 - 15:00 500 MW

02-11-2026 15:00 - 16:00 500 MW

02-11-2026 16:00 - 17:00 500 MW

02-11-2026 17:00 - 18:00 500 MW

02-11-2026 18:00 - 19:00 500 MW

02-11-2026 19:00 - 20:00 500 MW

02-11-2026 20:00 - 21:00 500 MW

02-11-2026 21:00 - 22:00 500 MW

02-11-2026 22:00 - 23:00 500 MW

02-11-2026 23:00 - 24:00 500 MW

5. Amount of LTTR remaining after curtailment:

02-11-2026 00:00 - 01:00 0 MW

02-11-2026 01:00 - 02:00 0 MW

02-11-2026 02:00 - 03:00 0 MW

02-11-2026 03:00 - 04:00 0 MW

02-11-2026 04:00 - 05:00 0 MW

02-11-2026 05:00 - 06:00 0 MW

02-11-2026 06:00 - 07:00 0 MW

02-11-2026 07:00 - 08:00 0 MW

02-11-2026 08:00 - 09:00 0 MW

02-11-2026 09:00 - 10:00 0 MW

02-11-2026 10:00 - 11:00 0 MW

02-11-2026 11:00 - 12:00 0 MW

02-11-2026 12:00 - 13:00 0 MW

02-11-2026 13:00 - 14:00 0 MW

02-11-2026 14:00 - 15:00 0 MW

02-11-2026 15:00 - 16:00 0 MW

02-11-2026 16:00 - 17:00 0 MW

02-11-2026 17:00 - 18:00 0 MW

02-11-2026 18:00 - 19:00 0 MW

02-11-2026 19:00 - 20:00 0 MW

02-11-2026 20:00 - 21:00 0 MW

02-11-2026 21:00 - 22:00 0 MW

02-11-2026 22:00 - 23:00 0 MW

02-11-2026 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*:

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

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:

02-11-2026 00:00 - 01:00 344 MW

02-11-2026 01:00 - 02:00 344 MW

02-11-2026 02:00 - 03:00 344 MW

02-11-2026 03:00 - 04:00 344 MW

02-11-2026 04:00 - 05:00 344 MW

02-11-2026 05:00 - 06:00 344 MW

02-11-2026 06:00 - 07:00 344 MW

02-11-2026 07:00 - 08:00 344 MW

02-11-2026 08:00 - 09:00 344 MW

02-11-2026 09:00 - 10:00 344 MW

02-11-2026 10:00 - 11:00 344 MW

02-11-2026 11:00 - 12:00 344 MW

02-11-2026 12:00 - 13:00 344 MW

02-11-2026 13:00 - 14:00 344 MW

02-11-2026 14:00 - 15:00 344 MW

02-11-2026 15:00 - 16:00 344 MW

02-11-2026 16:00 - 17:00 344 MW

02-11-2026 17:00 - 18:00 344 MW

02-11-2026 18:00 - 19:00 344 MW

02-11-2026 19:00 - 20:00 344 MW

02-11-2026 20:00 - 21:00 344 MW

02-11-2026 21:00 - 22:00 344 MW

02-11-2026 22:00 - 23:00 344 MW

02-11-2026 23:00 - 24:00 344 MW

5. Amount of LTTR remaining after curtailment:

02-11-2026 00:00 - 01:00 176 MW

02-11-2026 01:00 - 02:00 176 MW

02-11-2026 02:00 - 03:00 176 MW

02-11-2026 03:00 - 04:00 176 MW

02-11-2026 04:00 - 05:00 176 MW

02-11-2026 05:00 - 06:00 176 MW

02-11-2026 06:00 - 07:00 176 MW

02-11-2026 07:00 - 08:00 185 MW

02-11-2026 08:00 - 09:00 166 MW

02-11-2026 09:00 - 10:00 145 MW

02-11-2026 10:00 - 11:00 145 MW

02-11-2026 11:00 - 12:00 145 MW

02-11-2026 12:00 - 13:00 136 MW

02-11-2026 13:00 - 14:00 136 MW

02-11-2026 14:00 - 15:00 136 MW

02-11-2026 15:00 - 16:00 140 MW

02-11-2026 16:00 - 17:00 185 MW

02-11-2026 17:00 - 18:00 185 MW

02-11-2026 18:00 - 19:00 185 MW

02-11-2026 19:00 - 20:00 185 MW

02-11-2026 20:00 - 21:00 185 MW

02-11-2026 21:00 - 22:00 185 MW

02-11-2026 22:00 - 23:00 185 MW

02-11-2026 23:00 - 24:00 176 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

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:

02-11-2026 00:00 - 01:00 108 MW

02-11-2026 01:00 - 02:00 108 MW

02-11-2026 02:00 - 03:00 108 MW

02-11-2026 03:00 - 04:00 108 MW

02-11-2026 04:00 - 05:00 108 MW

02-11-2026 05:00 - 06:00 108 MW

02-11-2026 06:00 - 07:00 108 MW

02-11-2026 07:00 - 08:00 108 MW

02-11-2026 08:00 - 09:00 108 MW

02-11-2026 09:00 - 10:00 108 MW

02-11-2026 10:00 - 11:00 108 MW

02-11-2026 11:00 - 12:00 108 MW

02-11-2026 12:00 - 13:00 108 MW

02-11-2026 13:00 - 14:00 108 MW

02-11-2026 14:00 - 15:00 108 MW

02-11-2026 15:00 - 16:00 108 MW

02-11-2026 16:00 - 17:00 108 MW

02-11-2026 17:00 - 18:00 108 MW

02-11-2026 18:00 - 19:00 108 MW

02-11-2026 19:00 - 20:00 108 MW

02-11-2026 20:00 - 21:00 108 MW

02-11-2026 21:00 - 22:00 108 MW

02-11-2026 22:00 - 23:00 108 MW

02-11-2026 23:00 - 24:00 108 MW

5. Amount of LTTR remaining after curtailment:

02-11-2026 00:00 - 01:00 86 MW

02-11-2026 01:00 - 02:00 86 MW

02-11-2026 02:00 - 03:00 86 MW

02-11-2026 03:00 - 04:00 86 MW

02-11-2026 04:00 - 05:00 86 MW

02-11-2026 05:00 - 06:00 86 MW

02-11-2026 06:00 - 07:00 86 MW

02-11-2026 07:00 - 08:00 50 MW

02-11-2026 08:00 - 09:00 50 MW

02-11-2026 09:00 - 10:00 50 MW

02-11-2026 10:00 - 11:00 50 MW

02-11-2026 11:00 - 12:00 50 MW

02-11-2026 12:00 - 13:00 50 MW

02-11-2026 13:00 - 14:00 50 MW

02-11-2026 14:00 - 15:00 50 MW

02-11-2026 15:00 - 16:00 50 MW

02-11-2026 16:00 - 17:00 50 MW

02-11-2026 17:00 - 18:00 50 MW

02-11-2026 18:00 - 19:00 50 MW

02-11-2026 19:00 - 20:00 50 MW

02-11-2026 20:00 - 21:00 50 MW

02-11-2026 21:00 - 22:00 50 MW

02-11-2026 22:00 - 23:00 50 MW

02-11-2026 23:00 - 24:00 86 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

Resource Center

This section contains key information for market participants such as user guides, forms, auction rules, nomination deadlines and other documents.

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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.

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.

Get to know us

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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