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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 DE-AT border for delivery period 22-10-2025

Published: 20/10/2025 | 15:56 by JAO
Cancellation of several IFA1 and IFA2 weekend auctions until December 2025

Published: 20/10/2025 | 15:44 by JAO
Capacity Curtailment on the EE-LV border for delivery period 21-10-2025

Published: 20/10/2025 | 10:48 by JAO
Capacity Curtailment on the IF1-GB-FR border for delivery period 22-10-2025

Published: 20/10/2025 | 10:44 by JAO
Capacity Curtailment on the IF1-FR-GB border for delivery period 22-10-2025

Published: 20/10/2025 | 10:44 by JAO
Capacity Curtailment on the IT-GR border for delivery period 21-10-2025

Published: 20/10/2025 | 07:40 by JAO
Capacity Curtailment on the GR-IT border for delivery period 21-10-2025

Published: 20/10/2025 | 07:40 by JAO

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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:

22-10-2025 00:00 - 01:00 4819 MW

22-10-2025 01:00 - 02:00 4819 MW

22-10-2025 02:00 - 03:00 4819 MW

22-10-2025 03:00 - 04:00 4819 MW

22-10-2025 04:00 - 05:00 4819 MW

22-10-2025 05:00 - 06:00 4819 MW

22-10-2025 06:00 - 07:00 4819 MW

22-10-2025 07:00 - 08:00 4819 MW

22-10-2025 08:00 - 09:00 4819 MW

22-10-2025 09:00 - 10:00 4819 MW

22-10-2025 10:00 - 11:00 4819 MW

22-10-2025 11:00 - 12:00 4819 MW

22-10-2025 12:00 - 13:00 4819 MW

22-10-2025 13:00 - 14:00 4819 MW

22-10-2025 14:00 - 15:00 4819 MW

22-10-2025 15:00 - 16:00 4819 MW

22-10-2025 16:00 - 17:00 4819 MW

22-10-2025 17:00 - 18:00 4819 MW

22-10-2025 18:00 - 19:00 4819 MW

22-10-2025 19:00 - 20:00 4819 MW

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

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

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

22-10-2025 23:00 - 24:00 4819 MW

5. Amount of LTTR remaining after curtailment:

22-10-2025 00:00 - 01:00 4593 MW

22-10-2025 01:00 - 02:00 4593 MW

22-10-2025 02:00 - 03:00 4593 MW

22-10-2025 03:00 - 04:00 4593 MW

22-10-2025 04:00 - 05:00 4593 MW

22-10-2025 05:00 - 06:00 4593 MW

22-10-2025 06:00 - 07:00 4593 MW

22-10-2025 07:00 - 08:00 4593 MW

22-10-2025 08:00 - 09:00 4593 MW

22-10-2025 09:00 - 10:00 4593 MW

22-10-2025 10:00 - 11:00 4593 MW

22-10-2025 11:00 - 12:00 4593 MW

22-10-2025 12:00 - 13:00 4593 MW

22-10-2025 13:00 - 14:00 4593 MW

22-10-2025 14:00 - 15:00 4593 MW

22-10-2025 15:00 - 16:00 4593 MW

22-10-2025 16:00 - 17:00 4593 MW

22-10-2025 17:00 - 18:00 4593 MW

22-10-2025 18:00 - 19:00 4593 MW

22-10-2025 19:00 - 20:00 4593 MW

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

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

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

22-10-2025 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

Dear Market Participant,

As per TSO request, the IFA1 and IFA2 Weekend Auctions with the auction IDs listed below have been cancelled.

IF1-FR-GB-E-BASE---251025-01– IF1 Weekend auction scheduled to start Thu 23/10/2025 11:10
IF1-GB-FR-E-BASE---251025-01– IF1 Weekend auction scheduled to start Thu 23/10/2025 11:10
IF1-FR-GB-E-BASE---251101-01– IF1 Weekend auction scheduled to start Thu 30/10/2025 11:10
IF1-GB-FR-E-BASE---251101-01– IF1 Weekend auction scheduled to start Thu 30/10/2025 11:10
IF1-FR-GB-E-BASE---251108-01– IF1 Weekend auction scheduled to start Thu 06/11/2025 11:10
IF1-GB-FR-E-BASE---251108-01– IF1 Weekend auction scheduled to start Thu 06/11/2025 11:10
IF1-FR-GB-E-BASE---251115-01– IF1 Weekend auction scheduled to start Thu 13/11/2025 11:10
IF1-GB-FR-E-BASE---251115-01– IF1 Weekend auction scheduled to start Thu 13/11/2025 11:10
IF1-FR-GB-E-BASE---251122-01– IF1 Weekend auction scheduled to start Thu 20/11/2025 11:10
IF1-GB-FR-E-BASE---251122-01– IF1 Weekend auction scheduled to start Thu 20/11/2025 11:10
IF1-FR-GB-E-BASE---251129-01– IF1 Weekend auction scheduled to start Thu 27/11/2025 11:10
IF1-GB-FR-E-BASE---251129-01– IF1 Weekend auction scheduled to start Thu 27/11/2025 11:10
IF1-FR-GB-E-BASE---251206-01– IF1 Weekend auction scheduled to start Thu 04/12/2025 11:10
IF1-GB-FR-E-BASE---251206-01– IF1 Weekend auction scheduled to start Thu 04/12/2025 11:10
IF1-FR-GB-E-BASE---251213-01– IF1 Weekend auction scheduled to start Thu 11/12/2025 11:10
IF1-GB-FR-E-BASE---251213-01– IF1 Weekend auction scheduled to start Thu 11/12/2025 11:10
IF1-FR-GB-E-BASE---251220-01– IF1 Weekend auction scheduled to start Thu 18/12/2025 11:10
IF1-GB-FR-E-BASE---251220-01– IF1 Weekend auction scheduled to start Thu 18/12/2025 11:10
IF1-FR-GB-E-BASE---251227-01– IF1 Weekend auction scheduled to start Thu 25/12/2025 11:10
IF1-GB-FR-E-BASE---251227-01– IF1 Weekend auction scheduled to start Thu 25/12/2025 11:10
IF2-FR-GB-E-BASE---251101-01– IF2 Weekend auction scheduled to start Thu 30/10/2025 11:10
IF2-GB-FR-E-BASE---251101-01– IF2 Weekend auction scheduled to start Thu 30/10/2025 11:10
IF2-FR-GB-E-BASE---251108-01– IF2 Weekend auction scheduled to start Thu 06/11/2025 11:10
IF2-GB-FR-E-BASE---251108-01– IF2 Weekend auction scheduled to start Thu 06/11/2025 11:10
IF2-FR-GB-E-BASE---251115-01– IF2 Weekend auction scheduled to start Thu 13/11/2025 11:10
IF2-GB-FR-E-BASE---251115-01– IF2 Weekend auction scheduled to start Thu 13/11/2025 11:10
IF2-FR-GB-E-BASE---251122-01– IF2 Weekend auction scheduled to start Thu 20/11/2025 11:10
IF2-GB-FR-E-BASE---251122-01– IF2 Weekend auction scheduled to start Thu 20/11/2025 11:10
IF2-FR-GB-E-BASE---251129-01– IF2 Weekend auction scheduled to start Thu 27/11/2025 11:10
IF2-GB-FR-E-BASE---251129-01– IF2 Weekend auction scheduled to start Thu 27/11/2025 11:10

Thank you for your understanding

JAO Operations

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:

21-10-2025 00:00 - 01:00 550 MW

21-10-2025 01:00 - 02:00 550 MW

21-10-2025 02:00 - 03:00 550 MW

21-10-2025 03:00 - 04:00 550 MW

21-10-2025 04:00 - 05:00 550 MW

21-10-2025 05:00 - 06:00 550 MW

21-10-2025 06:00 - 07:00 550 MW

21-10-2025 07:00 - 08:00 550 MW

21-10-2025 08:00 - 09:00 550 MW

21-10-2025 09:00 - 10:00 550 MW

21-10-2025 10:00 - 11:00 550 MW

21-10-2025 11:00 - 12:00 550 MW

21-10-2025 12:00 - 13:00 550 MW

21-10-2025 13:00 - 14:00 550 MW

21-10-2025 14:00 - 15:00 550 MW

21-10-2025 15:00 - 16:00 550 MW

21-10-2025 16:00 - 17:00 550 MW

21-10-2025 17:00 - 18:00 550 MW

21-10-2025 18:00 - 19:00 550 MW

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

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

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

21-10-2025 22:00 - 23:00 550 MW

21-10-2025 23:00 - 24:00 550 MW

5. Amount of LTTR remaining after curtailment:

21-10-2025 00:00 - 01:00 485 MW

21-10-2025 01:00 - 02:00 485 MW

21-10-2025 02:00 - 03:00 485 MW

21-10-2025 03:00 - 04:00 485 MW

21-10-2025 04:00 - 05:00 485 MW

21-10-2025 05:00 - 06:00 485 MW

21-10-2025 06:00 - 07:00 485 MW

21-10-2025 07:00 - 08:00 492 MW

21-10-2025 08:00 - 09:00 494 MW

21-10-2025 09:00 - 10:00 485 MW

21-10-2025 10:00 - 11:00 485 MW

21-10-2025 11:00 - 12:00 485 MW

21-10-2025 12:00 - 13:00 485 MW

21-10-2025 13:00 - 14:00 485 MW

21-10-2025 14:00 - 15:00 485 MW

21-10-2025 15:00 - 16:00 485 MW

21-10-2025 16:00 - 17:00 485 MW

21-10-2025 17:00 - 18:00 485 MW

21-10-2025 18:00 - 19:00 485 MW

21-10-2025 19:00 - 20:00 492 MW

21-10-2025 20:00 - 21:00 492 MW

21-10-2025 21:00 - 22:00 492 MW

21-10-2025 22:00 - 23:00 485 MW

21-10-2025 23:00 - 24:00 485 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.

*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:

22-10-2025 00:00 - 01:00 1222 MW

22-10-2025 01:00 - 02:00 1222 MW

22-10-2025 02:00 - 03:00 1222 MW

22-10-2025 03:00 - 04:00 1222 MW

22-10-2025 04:00 - 05:00 1222 MW

22-10-2025 05:00 - 06:00 1222 MW

22-10-2025 06:00 - 07:00 1222 MW

22-10-2025 07:00 - 08:00 1222 MW

22-10-2025 08:00 - 09:00 1222 MW

22-10-2025 09:00 - 10:00 1222 MW

22-10-2025 10:00 - 11:00 1222 MW

22-10-2025 11:00 - 12:00 1222 MW

22-10-2025 12:00 - 13:00 1222 MW

22-10-2025 13:00 - 14:00 1222 MW

22-10-2025 14:00 - 15:00 1222 MW

22-10-2025 15:00 - 16:00 1222 MW

22-10-2025 16:00 - 17:00 1222 MW

5. Amount of LTTR remaining after curtailment:

22-10-2025 00:00 - 01:00 969 MW

22-10-2025 01:00 - 02:00 969 MW

22-10-2025 02:00 - 03:00 969 MW

22-10-2025 03:00 - 04:00 969 MW

22-10-2025 04:00 - 05:00 969 MW

22-10-2025 05:00 - 06:00 969 MW

22-10-2025 06:00 - 07:00 969 MW

22-10-2025 07:00 - 08:00 969 MW

22-10-2025 08:00 - 09:00 969 MW

22-10-2025 09:00 - 10:00 969 MW

22-10-2025 10:00 - 11:00 969 MW

22-10-2025 11:00 - 12:00 969 MW

22-10-2025 12:00 - 13:00 969 MW

22-10-2025 13:00 - 14:00 969 MW

22-10-2025 14:00 - 15:00 969 MW

22-10-2025 15:00 - 16:00 969 MW

22-10-2025 16:00 - 17:00 969 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

*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:

22-10-2025 00:00 - 01:00 1220 MW

22-10-2025 01:00 - 02:00 1220 MW

22-10-2025 02:00 - 03:00 1220 MW

22-10-2025 03:00 - 04:00 1220 MW

22-10-2025 04:00 - 05:00 1220 MW

22-10-2025 05:00 - 06:00 1220 MW

22-10-2025 06:00 - 07:00 1220 MW

22-10-2025 07:00 - 08:00 1220 MW

22-10-2025 08:00 - 09:00 1220 MW

22-10-2025 09:00 - 10:00 1220 MW

22-10-2025 10:00 - 11:00 1220 MW

22-10-2025 11:00 - 12:00 1220 MW

22-10-2025 12:00 - 13:00 1220 MW

22-10-2025 13:00 - 14:00 1220 MW

22-10-2025 14:00 - 15:00 1220 MW

22-10-2025 15:00 - 16:00 1220 MW

22-10-2025 16:00 - 17:00 1220 MW

5. Amount of LTTR remaining after curtailment:

22-10-2025 00:00 - 01:00 968 MW

22-10-2025 01:00 - 02:00 968 MW

22-10-2025 02:00 - 03:00 968 MW

22-10-2025 03:00 - 04:00 968 MW

22-10-2025 04:00 - 05:00 968 MW

22-10-2025 05:00 - 06:00 968 MW

22-10-2025 06:00 - 07:00 968 MW

22-10-2025 07:00 - 08:00 968 MW

22-10-2025 08:00 - 09:00 968 MW

22-10-2025 09:00 - 10:00 968 MW

22-10-2025 10:00 - 11:00 968 MW

22-10-2025 11:00 - 12:00 968 MW

22-10-2025 12:00 - 13:00 968 MW

22-10-2025 13:00 - 14:00 968 MW

22-10-2025 14:00 - 15:00 968 MW

22-10-2025 15:00 - 16:00 968 MW

22-10-2025 16:00 - 17:00 968 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

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:

21-10-2025 00:00 - 01:00 50 MW

21-10-2025 01:00 - 02:00 50 MW

21-10-2025 02:00 - 03:00 50 MW

21-10-2025 03:00 - 04:00 50 MW

21-10-2025 04:00 - 05:00 50 MW

21-10-2025 05:00 - 06:00 50 MW

21-10-2025 06:00 - 07:00 50 MW

21-10-2025 07:00 - 08:00 50 MW

21-10-2025 08:00 - 09:00 50 MW

21-10-2025 09:00 - 10:00 50 MW

21-10-2025 10:00 - 11:00 50 MW

21-10-2025 11:00 - 12:00 50 MW

21-10-2025 12:00 - 13:00 50 MW

21-10-2025 13:00 - 14:00 50 MW

21-10-2025 14:00 - 15:00 50 MW

21-10-2025 15:00 - 16:00 50 MW

21-10-2025 16:00 - 17:00 50 MW

21-10-2025 17:00 - 18:00 50 MW

21-10-2025 18:00 - 19:00 50 MW

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

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

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

21-10-2025 22:00 - 23:00 50 MW

21-10-2025 23:00 - 24:00 50 MW

5. Amount of LTTR remaining after curtailment:

21-10-2025 00:00 - 01:00 0 MW

21-10-2025 01:00 - 02:00 0 MW

21-10-2025 02:00 - 03:00 0 MW

21-10-2025 03:00 - 04:00 0 MW

21-10-2025 04:00 - 05:00 0 MW

21-10-2025 05:00 - 06:00 0 MW

21-10-2025 06:00 - 07:00 0 MW

21-10-2025 07:00 - 08:00 0 MW

21-10-2025 08:00 - 09:00 0 MW

21-10-2025 09:00 - 10:00 0 MW

21-10-2025 10:00 - 11:00 0 MW

21-10-2025 11:00 - 12:00 0 MW

21-10-2025 12:00 - 13:00 0 MW

21-10-2025 13:00 - 14:00 0 MW

21-10-2025 14:00 - 15:00 0 MW

21-10-2025 15:00 - 16:00 0 MW

21-10-2025 16:00 - 17:00 0 MW

21-10-2025 17:00 - 18:00 0 MW

21-10-2025 18:00 - 19:00 0 MW

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

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

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

21-10-2025 22:00 - 23:00 0 MW

21-10-2025 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)*?
Not Applicable

*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:

21-10-2025 00:00 - 01:00 50 MW

21-10-2025 01:00 - 02:00 50 MW

21-10-2025 02:00 - 03:00 50 MW

21-10-2025 03:00 - 04:00 50 MW

21-10-2025 04:00 - 05:00 50 MW

21-10-2025 05:00 - 06:00 50 MW

21-10-2025 06:00 - 07:00 50 MW

21-10-2025 07:00 - 08:00 50 MW

21-10-2025 08:00 - 09:00 50 MW

21-10-2025 09:00 - 10:00 50 MW

21-10-2025 10:00 - 11:00 50 MW

21-10-2025 11:00 - 12:00 50 MW

21-10-2025 12:00 - 13:00 50 MW

21-10-2025 13:00 - 14:00 50 MW

21-10-2025 14:00 - 15:00 50 MW

21-10-2025 15:00 - 16:00 50 MW

21-10-2025 16:00 - 17:00 50 MW

21-10-2025 17:00 - 18:00 50 MW

21-10-2025 18:00 - 19:00 50 MW

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

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

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

21-10-2025 22:00 - 23:00 50 MW

21-10-2025 23:00 - 24:00 50 MW

5. Amount of LTTR remaining after curtailment:

21-10-2025 00:00 - 01:00 0 MW

21-10-2025 01:00 - 02:00 0 MW

21-10-2025 02:00 - 03:00 0 MW

21-10-2025 03:00 - 04:00 0 MW

21-10-2025 04:00 - 05:00 0 MW

21-10-2025 05:00 - 06:00 0 MW

21-10-2025 06:00 - 07:00 0 MW

21-10-2025 07:00 - 08:00 0 MW

21-10-2025 08:00 - 09:00 0 MW

21-10-2025 09:00 - 10:00 0 MW

21-10-2025 10:00 - 11:00 0 MW

21-10-2025 11:00 - 12:00 0 MW

21-10-2025 12:00 - 13:00 0 MW

21-10-2025 13:00 - 14:00 0 MW

21-10-2025 14:00 - 15:00 0 MW

21-10-2025 15:00 - 16:00 0 MW

21-10-2025 16:00 - 17:00 0 MW

21-10-2025 17:00 - 18:00 0 MW

21-10-2025 18:00 - 19:00 0 MW

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

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

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

21-10-2025 22:00 - 23:00 0 MW

21-10-2025 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)*?
Not Applicable

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

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

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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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