See Our

Annual Report

Read here

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.

 

Go down

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 EE-LV border for delivery period 24-06-2025

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:

24-06-2025 03:00 - 04:00 500 MW

5. Amount of LTTR remaining after curtailment:

24-06-2025 03:00 - 04:00 465 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

Capacity Curtailment on the NLL-GB-BE border for delivery period 24-06-2025

by JAO

1. TSO(s)*:

ELIA Transmission Belgium 

2. Identification of affected Long Term Transmission Rights:

NLL-GB-BE

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

24-06-2025 00:00 - 01:00 674 MW

24-06-2025 09:00 - 10:00 674 MW

24-06-2025 10:00 - 11:00 674 MW

24-06-2025 11:00 - 12:00 674 MW

24-06-2025 12:00 - 13:00 674 MW

24-06-2025 13:00 - 14:00 674 MW

24-06-2025 14:00 - 15:00 674 MW

24-06-2025 15:00 - 16:00 674 MW

24-06-2025 16:00 - 17:00 674 MW

24-06-2025 17:00 - 18:00 674 MW

24-06-2025 18:00 - 19:00 674 MW

24-06-2025 19:00 - 20:00 674 MW

24-06-2025 20:00 - 21:00 674 MW

24-06-2025 21:00 - 22:00 674 MW

24-06-2025 22:00 - 23:00 674 MW

24-06-2025 23:00 - 24:00 674 MW

5. Amount of LTTR remaining after curtailment:

24-06-2025 00:00 - 01:00 550 MW

24-06-2025 09:00 - 10:00 319 MW

24-06-2025 10:00 - 11:00 60 MW

24-06-2025 11:00 - 12:00 60 MW

24-06-2025 12:00 - 13:00 60 MW

24-06-2025 13:00 - 14:00 60 MW

24-06-2025 14:00 - 15:00 15 MW

24-06-2025 15:00 - 16:00 15 MW

24-06-2025 16:00 - 17:00 0 MW

24-06-2025 17:00 - 18:00 0 MW

24-06-2025 18:00 - 19:00 0 MW

24-06-2025 19:00 - 20:00 0 MW

24-06-2025 20:00 - 21:00 0 MW

24-06-2025 21:00 - 22:00 0 MW

24-06-2025 22:00 - 23:00 0 MW

24-06-2025 23:00 - 24:00 2 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)*?

Reason for this curtailment is a forced outage on the cable 380.108 between the substations GEZEL380 and MAERL380.
 

*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-IT border for delivery period 24-06-2025

by JAO

1. TSO(s)*:
TERNA, ELES, APG, RTE, SWISSGRID

2. Identification of affected Long Term Transmission Rights:
SI-IT

3. Triggering event:
Curtailment to ensure operation remains within Operational Security Limits

4. Affected volume in MW / hour for each concerned period:
24-06-2025 18:00 - 19:00 236 MW

5. Amount of LTTR remaining after curtailment:
24-06-2025 18:00 - 19:00 202 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 IT-FR border for delivery period 24-06-2025

by JAO

1. TSO(s)*:
TERNA, RTE
 
2. Identification of affected Long Term Transmission Rights:
IT-FR
 
3. Triggering event:
Curtailment to ensure operation remains within Operational Security Limits
 
4. Affected volume in MW / hour for each concerned period:
24-06-2025 00:00 - 01:00 1867 MW
24-06-2025 01:00 - 02:00 1867 MW
24-06-2025 02:00 - 03:00 1867 MW
24-06-2025 03:00 - 04:00 1867 MW
24-06-2025 04:00 - 05:00 1867 MW
24-06-2025 05:00 - 06:00 1867 MW
24-06-2025 06:00 - 07:00 1867 MW
24-06-2025 07:00 - 08:00 1867 MW
24-06-2025 08:00 - 09:00 1867 MW
24-06-2025 09:00 - 10:00 1867 MW
24-06-2025 10:00 - 11:00 1867 MW
24-06-2025 11:00 - 12:00 1867 MW
24-06-2025 12:00 - 13:00 1867 MW
24-06-2025 13:00 - 14:00 1867 MW
24-06-2025 14:00 - 15:00 1867 MW
24-06-2025 15:00 - 16:00 1867 MW
24-06-2025 16:00 - 17:00 1867 MW
24-06-2025 17:00 - 18:00 1867 MW
24-06-2025 18:00 - 19:00 1867 MW
24-06-2025 19:00 - 20:00 1867 MW
24-06-2025 20:00 - 21:00 1867 MW
24-06-2025 21:00 - 22:00 1867 MW
24-06-2025 22:00 - 23:00 1867 MW
24-06-2025 23:00 - 24:00 1867 MW
 
5. Amount of LTTR remaining after curtailment:
24-06-2025 00:00 - 01:00 1527 MW
24-06-2025 01:00 - 02:00 1527 MW
24-06-2025 02:00 - 03:00 1527 MW
24-06-2025 03:00 - 04:00 1527 MW
24-06-2025 04:00 - 05:00 1527 MW
24-06-2025 05:00 - 06:00 1527 MW
24-06-2025 06:00 - 07:00 1527 MW
24-06-2025 07:00 - 08:00 1344 MW
24-06-2025 08:00 - 09:00 1344 MW
24-06-2025 09:00 - 10:00 1344 MW
24-06-2025 10:00 - 11:00 1344 MW
24-06-2025 11:00 - 12:00 1344 MW
24-06-2025 12:00 - 13:00 1344 MW
24-06-2025 13:00 - 14:00 1344 MW
24-06-2025 14:00 - 15:00 1344 MW
24-06-2025 15:00 - 16:00 1344 MW
24-06-2025 16:00 - 17:00 1344 MW
24-06-2025 17:00 - 18:00 1344 MW
24-06-2025 18:00 - 19:00 1323 MW
24-06-2025 19:00 - 20:00 1323 MW
24-06-2025 20:00 - 21:00 1323 MW
24-06-2025 21:00 - 22:00 1344 MW
24-06-2025 22:00 - 23:00 1344 MW
24-06-2025 23:00 - 24:00 1527 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
The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer.
 

Publication of IDCC (b) data for Business Day 23/06/2025

by JAO

Dear Market Participants,

We would like to inform you that validation reduction data Core ID CCR IDCC (b) for business day 23/06/2025, will not be published as it is not available in CCC Tool.

Thank you for your understanding.

Kind regards,

JAO Operations

Capacity Curtailment on the EE-LV border for delivery period 23-06-2025

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:

23-06-2025 01:00 - 02:00 500 MW

23-06-2025 02:00 - 03:00 500 MW

23-06-2025 03:00 - 04:00 500 MW

23-06-2025 04:00 - 05:00 500 MW

23-06-2025 05:00 - 06:00 500 MW

23-06-2025 06:00 - 07:00 500 MW

23-06-2025 07:00 - 08:00 500 MW

23-06-2025 08:00 - 09:00 500 MW

23-06-2025 16:00 - 17:00 500 MW

23-06-2025 18:00 - 19:00 500 MW

23-06-2025 22:00 - 23:00 500 MW

23-06-2025 23:00 - 24:00 500 MW

5. Amount of LTTR remaining after curtailment:

23-06-2025 01:00 - 02:00 464 MW

23-06-2025 02:00 - 03:00 465 MW

23-06-2025 03:00 - 04:00 460 MW

23-06-2025 04:00 - 05:00 463 MW

23-06-2025 05:00 - 06:00 460 MW

23-06-2025 06:00 - 07:00 462 MW

23-06-2025 07:00 - 08:00 465 MW

23-06-2025 08:00 - 09:00 465 MW

23-06-2025 16:00 - 17:00 465 MW

23-06-2025 18:00 - 19:00 465 MW

23-06-2025 22:00 - 23:00 465 MW

23-06-2025 23:00 - 24:00 465 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

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.

Capacity Curtailment on the AT-IT border for delivery period 23-06-2025

by JAO

1. TSO(s)*:

TERNA & APG

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:

23-06-2025 07:00 - 08:00 193 MW

23-06-2025 08:00 - 09:00 193 MW

23-06-2025 09:00 - 10:00 193 MW

23-06-2025 10:00 - 11:00 193 MW

23-06-2025 11:00 - 12:00 193 MW

23-06-2025 12:00 - 13:00 193 MW

23-06-2025 13:00 - 14:00 193 MW

23-06-2025 14:00 - 15:00 193 MW

5. Amount of LTTR remaining after curtailment:

23-06-2025 07:00 - 08:00 152 MW

23-06-2025 08:00 - 09:00 146 MW

23-06-2025 09:00 - 10:00 165 MW

23-06-2025 10:00 - 11:00 165 MW

23-06-2025 11:00 - 12:00 165 MW

23-06-2025 12:00 - 13:00 134 MW

23-06-2025 13:00 - 14:00 134 MW

23-06-2025 14:00 - 15:00 134 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

 

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. 

ISO
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.

Get to know us
Image
JAO workers

Frequently asked questions

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

Do you need support?

If you can't find an answer to your question, our team is here to help!