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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 IT-GR border for delivery period 20-10-2025

Published: 19/10/2025 | 07:24 by JAO
Capacity Curtailment on the GR-IT border for delivery period 20-10-2025

Published: 19/10/2025 | 07:24 by JAO
Capacity Curtailment on the DE-AT border for delivery period 20-10-2025

Published: 18/10/2025 | 15:12 by JAO
Capacity Curtailment on the EE-LV border for delivery period 19-10-2025

Published: 18/10/2025 | 10:22 by JAO
Capacity Curtailment on the GR-IT border for delivery period 19-10-2025

Published: 18/10/2025 | 07:38 by JAO
Capacity Curtailment on the IT-GR border for delivery period 19-10-2025

Published: 18/10/2025 | 07:38 by JAO
Capacity Curtailment on the IF1-GB-FR border for delivery period 19-10-2025

Published: 17/10/2025 | 18:58 by JAO

Go to Message board

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:

20-10-2025 00:00 - 01:00 50 MW

20-10-2025 01:00 - 02:00 50 MW

20-10-2025 02:00 - 03:00 50 MW

20-10-2025 03:00 - 04:00 50 MW

20-10-2025 04:00 - 05:00 50 MW

20-10-2025 05:00 - 06:00 50 MW

20-10-2025 06:00 - 07:00 50 MW

20-10-2025 07:00 - 08:00 50 MW

20-10-2025 08:00 - 09:00 50 MW

20-10-2025 09:00 - 10:00 50 MW

20-10-2025 10:00 - 11:00 50 MW

20-10-2025 11:00 - 12:00 50 MW

20-10-2025 12:00 - 13:00 50 MW

20-10-2025 13:00 - 14:00 50 MW

20-10-2025 14:00 - 15:00 50 MW

20-10-2025 15:00 - 16:00 50 MW

20-10-2025 16:00 - 17:00 50 MW

20-10-2025 17:00 - 18:00 50 MW

20-10-2025 18:00 - 19:00 50 MW

20-10-2025 19:00 - 20:00 50 MW

20-10-2025 20:00 - 21:00 50 MW

20-10-2025 21:00 - 22:00 50 MW

20-10-2025 22:00 - 23:00 50 MW

20-10-2025 23:00 - 24:00 50 MW

5. Amount of LTTR remaining after curtailment:

20-10-2025 00:00 - 01:00 0 MW

20-10-2025 01:00 - 02:00 0 MW

20-10-2025 02:00 - 03:00 0 MW

20-10-2025 03:00 - 04:00 0 MW

20-10-2025 04:00 - 05:00 0 MW

20-10-2025 05:00 - 06:00 0 MW

20-10-2025 06:00 - 07:00 0 MW

20-10-2025 07:00 - 08:00 0 MW

20-10-2025 08:00 - 09:00 0 MW

20-10-2025 09:00 - 10:00 0 MW

20-10-2025 10:00 - 11:00 0 MW

20-10-2025 11:00 - 12:00 0 MW

20-10-2025 12:00 - 13:00 0 MW

20-10-2025 13:00 - 14:00 0 MW

20-10-2025 14:00 - 15:00 0 MW

20-10-2025 15:00 - 16:00 0 MW

20-10-2025 16:00 - 17:00 0 MW

20-10-2025 17:00 - 18:00 0 MW

20-10-2025 18:00 - 19:00 0 MW

20-10-2025 19:00 - 20:00 0 MW

20-10-2025 20:00 - 21:00 0 MW

20-10-2025 21:00 - 22:00 0 MW

20-10-2025 22:00 - 23:00 0 MW

20-10-2025 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*:

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

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:

20-10-2025 00:00 - 01:00 50 MW

20-10-2025 01:00 - 02:00 50 MW

20-10-2025 02:00 - 03:00 50 MW

20-10-2025 03:00 - 04:00 50 MW

20-10-2025 04:00 - 05:00 50 MW

20-10-2025 05:00 - 06:00 50 MW

20-10-2025 06:00 - 07:00 50 MW

20-10-2025 07:00 - 08:00 50 MW

20-10-2025 08:00 - 09:00 50 MW

20-10-2025 09:00 - 10:00 50 MW

20-10-2025 10:00 - 11:00 50 MW

20-10-2025 11:00 - 12:00 50 MW

20-10-2025 12:00 - 13:00 50 MW

20-10-2025 13:00 - 14:00 50 MW

20-10-2025 14:00 - 15:00 50 MW

20-10-2025 15:00 - 16:00 50 MW

20-10-2025 16:00 - 17:00 50 MW

20-10-2025 17:00 - 18:00 50 MW

20-10-2025 18:00 - 19:00 50 MW

20-10-2025 19:00 - 20:00 50 MW

20-10-2025 20:00 - 21:00 50 MW

20-10-2025 21:00 - 22:00 50 MW

20-10-2025 22:00 - 23:00 50 MW

20-10-2025 23:00 - 24:00 50 MW

5. Amount of LTTR remaining after curtailment:

20-10-2025 00:00 - 01:00 0 MW

20-10-2025 01:00 - 02:00 0 MW

20-10-2025 02:00 - 03:00 0 MW

20-10-2025 03:00 - 04:00 0 MW

20-10-2025 04:00 - 05:00 0 MW

20-10-2025 05:00 - 06:00 0 MW

20-10-2025 06:00 - 07:00 0 MW

20-10-2025 07:00 - 08:00 0 MW

20-10-2025 08:00 - 09:00 0 MW

20-10-2025 09:00 - 10:00 0 MW

20-10-2025 10:00 - 11:00 0 MW

20-10-2025 11:00 - 12:00 0 MW

20-10-2025 12:00 - 13:00 0 MW

20-10-2025 13:00 - 14:00 0 MW

20-10-2025 14:00 - 15:00 0 MW

20-10-2025 15:00 - 16:00 0 MW

20-10-2025 16:00 - 17:00 0 MW

20-10-2025 17:00 - 18:00 0 MW

20-10-2025 18:00 - 19:00 0 MW

20-10-2025 19:00 - 20:00 0 MW

20-10-2025 20:00 - 21:00 0 MW

20-10-2025 21:00 - 22:00 0 MW

20-10-2025 22:00 - 23:00 0 MW

20-10-2025 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*:

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

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:

20-10-2025 00:00 - 01:00 4819 MW

20-10-2025 01:00 - 02:00 4819 MW

20-10-2025 02:00 - 03:00 4819 MW

20-10-2025 03:00 - 04:00 4819 MW

20-10-2025 04:00 - 05:00 4819 MW

20-10-2025 05:00 - 06:00 4819 MW

20-10-2025 06:00 - 07:00 4819 MW

20-10-2025 07:00 - 08:00 4819 MW

20-10-2025 08:00 - 09:00 4819 MW

20-10-2025 09:00 - 10:00 4819 MW

20-10-2025 10:00 - 11:00 4819 MW

20-10-2025 11:00 - 12:00 4819 MW

20-10-2025 12:00 - 13:00 4819 MW

20-10-2025 13:00 - 14:00 4819 MW

20-10-2025 14:00 - 15:00 4819 MW

20-10-2025 15:00 - 16:00 4819 MW

20-10-2025 16:00 - 17:00 4819 MW

20-10-2025 17:00 - 18:00 4819 MW

20-10-2025 18:00 - 19:00 4819 MW

20-10-2025 19:00 - 20:00 4819 MW

20-10-2025 20:00 - 21:00 4819 MW

20-10-2025 21:00 - 22:00 4819 MW

20-10-2025 22:00 - 23:00 4819 MW

20-10-2025 23:00 - 24:00 4819 MW

5. Amount of LTTR remaining after curtailment:

20-10-2025 00:00 - 01:00 4593 MW

20-10-2025 01:00 - 02:00 4593 MW

20-10-2025 02:00 - 03:00 4593 MW

20-10-2025 03:00 - 04:00 4593 MW

20-10-2025 04:00 - 05:00 4593 MW

20-10-2025 05:00 - 06:00 4593 MW

20-10-2025 06:00 - 07:00 4593 MW

20-10-2025 07:00 - 08:00 4593 MW

20-10-2025 08:00 - 09:00 4593 MW

20-10-2025 09:00 - 10:00 4593 MW

20-10-2025 10:00 - 11:00 4593 MW

20-10-2025 11:00 - 12:00 4593 MW

20-10-2025 12:00 - 13:00 4593 MW

20-10-2025 13:00 - 14:00 4593 MW

20-10-2025 14:00 - 15:00 4593 MW

20-10-2025 15:00 - 16:00 4593 MW

20-10-2025 16:00 - 17:00 4593 MW

20-10-2025 17:00 - 18:00 4593 MW

20-10-2025 18:00 - 19:00 4593 MW

20-10-2025 19:00 - 20:00 4593 MW

20-10-2025 20:00 - 21:00 4593 MW

20-10-2025 21:00 - 22:00 4593 MW

20-10-2025 22:00 - 23:00 4593 MW

20-10-2025 23:00 - 24:00 4593 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)*:

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:

19-10-2025 00:00 - 01:00 550 MW

19-10-2025 01:00 - 02:00 550 MW

19-10-2025 02:00 - 03:00 550 MW

19-10-2025 06:00 - 07:00 550 MW

19-10-2025 07:00 - 08:00 550 MW

19-10-2025 08:00 - 09:00 550 MW

19-10-2025 16:00 - 17:00 550 MW

19-10-2025 17:00 - 18:00 550 MW

19-10-2025 18:00 - 19:00 550 MW

19-10-2025 19:00 - 20:00 550 MW

19-10-2025 20:00 - 21:00 550 MW

19-10-2025 21:00 - 22:00 550 MW

19-10-2025 22:00 - 23:00 550 MW

19-10-2025 23:00 - 24:00 550 MW

5. Amount of LTTR remaining after curtailment:

19-10-2025 00:00 - 01:00 512 MW

19-10-2025 01:00 - 02:00 507 MW

19-10-2025 02:00 - 03:00 512 MW

19-10-2025 06:00 - 07:00 506 MW

19-10-2025 07:00 - 08:00 517 MW

19-10-2025 08:00 - 09:00 518 MW

19-10-2025 16:00 - 17:00 514 MW

19-10-2025 17:00 - 18:00 514 MW

19-10-2025 18:00 - 19:00 514 MW

19-10-2025 19:00 - 20:00 516 MW

19-10-2025 20:00 - 21:00 516 MW

19-10-2025 21:00 - 22:00 516 MW

19-10-2025 22:00 - 23:00 500 MW

19-10-2025 23:00 - 24:00 512 MW

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

https://umm.nordpoolgroup.com/#/messages?publicationDate=all&eventDate=custom&connections=EE-LV&eventDateStart=1970-01-01&eventDateStop=2125-04-20 , as well as the capacity already allocated on the Baltic Balancing Market for balancing capacity sharing at https://baltic.transparency-dashboard.eu/node/108

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

There is no alternative to the curtailment of the affected LTTRs.

1. TSO(s)*:

TERNA, ADMIE

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:

19-10-2025 00:00 - 01:00 50 MW

19-10-2025 01:00 - 02:00 50 MW

19-10-2025 02:00 - 03:00 50 MW

19-10-2025 03:00 - 04:00 50 MW

19-10-2025 04:00 - 05:00 50 MW

19-10-2025 05:00 - 06:00 50 MW

19-10-2025 06:00 - 07:00 50 MW

19-10-2025 07:00 - 08:00 50 MW

19-10-2025 08:00 - 09:00 50 MW

19-10-2025 09:00 - 10:00 50 MW

19-10-2025 10:00 - 11:00 50 MW

19-10-2025 11:00 - 12:00 50 MW

19-10-2025 12:00 - 13:00 50 MW

19-10-2025 13:00 - 14:00 50 MW

19-10-2025 14:00 - 15:00 50 MW

19-10-2025 15:00 - 16:00 50 MW

19-10-2025 16:00 - 17:00 50 MW

19-10-2025 17:00 - 18:00 50 MW

19-10-2025 18:00 - 19:00 50 MW

19-10-2025 19:00 - 20:00 50 MW

19-10-2025 20:00 - 21:00 50 MW

19-10-2025 21:00 - 22:00 50 MW

19-10-2025 22:00 - 23:00 50 MW

19-10-2025 23:00 - 24:00 50 MW

5. Amount of LTTR remaining after curtailment:

19-10-2025 00:00 - 01:00 0 MW

19-10-2025 01:00 - 02:00 0 MW

19-10-2025 02:00 - 03:00 0 MW

19-10-2025 03:00 - 04:00 0 MW

19-10-2025 04:00 - 05:00 0 MW

19-10-2025 05:00 - 06:00 0 MW

19-10-2025 06:00 - 07:00 0 MW

19-10-2025 07:00 - 08:00 0 MW

19-10-2025 08:00 - 09:00 0 MW

19-10-2025 09:00 - 10:00 0 MW

19-10-2025 10:00 - 11:00 0 MW

19-10-2025 11:00 - 12:00 0 MW

19-10-2025 12:00 - 13:00 0 MW

19-10-2025 13:00 - 14:00 0 MW

19-10-2025 14:00 - 15:00 0 MW

19-10-2025 15:00 - 16:00 0 MW

19-10-2025 16:00 - 17:00 0 MW

19-10-2025 17:00 - 18:00 0 MW

19-10-2025 18:00 - 19:00 0 MW

19-10-2025 19:00 - 20:00 0 MW

19-10-2025 20:00 - 21:00 0 MW

19-10-2025 21:00 - 22:00 0 MW

19-10-2025 22:00 - 23:00 0 MW

19-10-2025 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*:

HVDC cable ARACTHOS – GALATINA

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, ADMIE

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:

19-10-2025 00:00 - 01:00 50 MW

19-10-2025 01:00 - 02:00 50 MW

19-10-2025 02:00 - 03:00 50 MW

19-10-2025 03:00 - 04:00 50 MW

19-10-2025 04:00 - 05:00 50 MW

19-10-2025 05:00 - 06:00 50 MW

19-10-2025 06:00 - 07:00 50 MW

19-10-2025 07:00 - 08:00 50 MW

19-10-2025 08:00 - 09:00 50 MW

19-10-2025 09:00 - 10:00 50 MW

19-10-2025 10:00 - 11:00 50 MW

19-10-2025 11:00 - 12:00 50 MW

19-10-2025 12:00 - 13:00 50 MW

19-10-2025 13:00 - 14:00 50 MW

19-10-2025 14:00 - 15:00 50 MW

19-10-2025 15:00 - 16:00 50 MW

19-10-2025 16:00 - 17:00 50 MW

19-10-2025 17:00 - 18:00 50 MW

19-10-2025 18:00 - 19:00 50 MW

19-10-2025 19:00 - 20:00 50 MW

19-10-2025 20:00 - 21:00 50 MW

19-10-2025 21:00 - 22:00 50 MW

19-10-2025 22:00 - 23:00 50 MW

19-10-2025 23:00 - 24:00 50 MW

5. Amount of LTTR remaining after curtailment:

19-10-2025 00:00 - 01:00 0 MW

19-10-2025 01:00 - 02:00 0 MW

19-10-2025 02:00 - 03:00 0 MW

19-10-2025 03:00 - 04:00 0 MW

19-10-2025 04:00 - 05:00 0 MW

19-10-2025 05:00 - 06:00 0 MW

19-10-2025 06:00 - 07:00 0 MW

19-10-2025 07:00 - 08:00 0 MW

19-10-2025 08:00 - 09:00 0 MW

19-10-2025 09:00 - 10:00 0 MW

19-10-2025 10:00 - 11:00 0 MW

19-10-2025 11:00 - 12:00 0 MW

19-10-2025 12:00 - 13:00 0 MW

19-10-2025 13:00 - 14:00 0 MW

19-10-2025 14:00 - 15:00 0 MW

19-10-2025 15:00 - 16:00 0 MW

19-10-2025 16:00 - 17:00 0 MW

19-10-2025 17:00 - 18:00 0 MW

19-10-2025 18:00 - 19:00 0 MW

19-10-2025 19:00 - 20:00 0 MW

19-10-2025 20:00 - 21:00 0 MW

19-10-2025 21:00 - 22:00 0 MW

19-10-2025 22:00 - 23:00 0 MW

19-10-2025 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*:

HVDC cable ARACTHOS – GALATINA

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)*:

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:

19-10-2025 00:00 - 01:00 1222 MW

19-10-2025 01:00 - 02:00 1222 MW

19-10-2025 02:00 - 03:00 1222 MW

19-10-2025 03:00 - 04:00 1222 MW

19-10-2025 04:00 - 05:00 1222 MW

19-10-2025 05:00 - 06:00 1222 MW

19-10-2025 06:00 - 07:00 1222 MW

19-10-2025 07:00 - 08:00 1222 MW

19-10-2025 08:00 - 09:00 1222 MW

19-10-2025 09:00 - 10:00 1222 MW

19-10-2025 10:00 - 11:00 1222 MW

19-10-2025 11:00 - 12:00 1222 MW

19-10-2025 12:00 - 13:00 1222 MW

19-10-2025 13:00 - 14:00 1222 MW

19-10-2025 14:00 - 15:00 1222 MW

19-10-2025 15:00 - 16:00 1222 MW

19-10-2025 16:00 - 17:00 1222 MW

19-10-2025 17:00 - 18:00 1222 MW

19-10-2025 18:00 - 19:00 1222 MW

19-10-2025 19:00 - 20:00 1222 MW

19-10-2025 20:00 - 21:00 1222 MW

19-10-2025 21:00 - 22:00 1222 MW

19-10-2025 22:00 - 23:00 1222 MW

19-10-2025 23:00 - 24:00 1222 MW

5. Amount of LTTR remaining after curtailment:

19-10-2025 00:00 - 01:00 969 MW

19-10-2025 01:00 - 02:00 969 MW

19-10-2025 02:00 - 03:00 969 MW

19-10-2025 03:00 - 04:00 969 MW

19-10-2025 04:00 - 05:00 969 MW

19-10-2025 05:00 - 06:00 969 MW

19-10-2025 06:00 - 07:00 969 MW

19-10-2025 07:00 - 08:00 969 MW

19-10-2025 08:00 - 09:00 969 MW

19-10-2025 09:00 - 10:00 969 MW

19-10-2025 10:00 - 11:00 969 MW

19-10-2025 11:00 - 12:00 969 MW

19-10-2025 12:00 - 13:00 969 MW

19-10-2025 13:00 - 14:00 969 MW

19-10-2025 14:00 - 15:00 969 MW

19-10-2025 15:00 - 16:00 969 MW

19-10-2025 16:00 - 17:00 969 MW

19-10-2025 17:00 - 18:00 969 MW

19-10-2025 18:00 - 19:00 969 MW

19-10-2025 19:00 - 20:00 969 MW

19-10-2025 20:00 - 21:00 969 MW

19-10-2025 21:00 - 22:00 969 MW

19-10-2025 22:00 - 23:00 969 MW

19-10-2025 23:00 - 24:00 969 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

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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.

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