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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.

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OPS
  • 470+
    Registered Market Participants
  • 20k+
    Auctions per year
  • 100 %
    Auction Tool Availability
  • 95
    Employees
  • 50
    TSOs serviced

Latest market messages

Publication Tool data for Core ID CCR & Italy North CCR & IBWT IDA 2 Business Day 17.05.2025

by JAO

Dear Market Participants,

Please be informed that due to IDA2 cancellation for delivery date 17.05.2025, the missing data of IDA2 publication for the business day 17.05.2025 will not be available in Core ID CCR PuTO & Italy North CCR & IBWT IDA.

Kind regards,

Operations Team

Capacity Curtailment on the EL1-GB-FR border for delivery period 18-05-2025

by JAO

1. TSO(s)*:

ELECLINK

2. Identification of affected Long Term Transmission Rights:

EL1-GB-FR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

18-05-2025 00:00 - 01:00 963 MW

18-05-2025 01:00 - 02:00 963 MW

18-05-2025 02:00 - 03:00 963 MW

18-05-2025 03:00 - 04:00 963 MW

18-05-2025 04:00 - 05:00 963 MW

18-05-2025 05:00 - 06:00 963 MW

18-05-2025 06:00 - 07:00 963 MW

18-05-2025 07:00 - 08:00 963 MW

18-05-2025 08:00 - 09:00 963 MW

18-05-2025 09:00 - 10:00 963 MW

18-05-2025 10:00 - 11:00 963 MW

18-05-2025 11:00 - 12:00 963 MW

18-05-2025 12:00 - 13:00 963 MW

18-05-2025 13:00 - 14:00 963 MW

18-05-2025 14:00 - 15:00 963 MW

18-05-2025 15:00 - 16:00 963 MW

18-05-2025 16:00 - 17:00 963 MW

18-05-2025 17:00 - 18:00 963 MW

18-05-2025 18:00 - 19:00 963 MW

18-05-2025 19:00 - 20:00 963 MW

18-05-2025 20:00 - 21:00 963 MW

18-05-2025 21:00 - 22:00 963 MW

18-05-2025 22:00 - 23:00 963 MW

18-05-2025 23:00 - 24:00 963 MW

5. Amount of LTTR remaining after curtailment:

18-05-2025 00:00 - 01:00 0 MW

18-05-2025 01:00 - 02:00 0 MW

18-05-2025 02:00 - 03:00 0 MW

18-05-2025 03:00 - 04:00 0 MW

18-05-2025 04:00 - 05:00 0 MW

18-05-2025 05:00 - 06:00 0 MW

18-05-2025 06:00 - 07:00 0 MW

18-05-2025 07:00 - 08:00 0 MW

18-05-2025 08:00 - 09:00 0 MW

18-05-2025 09:00 - 10:00 0 MW

18-05-2025 10:00 - 11:00 0 MW

18-05-2025 11:00 - 12:00 0 MW

18-05-2025 12:00 - 13:00 0 MW

18-05-2025 13:00 - 14:00 0 MW

18-05-2025 14:00 - 15:00 0 MW

18-05-2025 15:00 - 16:00 0 MW

18-05-2025 16:00 - 17:00 0 MW

18-05-2025 17:00 - 18:00 0 MW

18-05-2025 18:00 - 19:00 0 MW

18-05-2025 19:00 - 20:00 0 MW

18-05-2025 20:00 - 21:00 0 MW

18-05-2025 21:00 - 22:00 0 MW

18-05-2025 22:00 - 23:00 0 MW

18-05-2025 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*:

Unplanned maintenance

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

Maintenance for an unplanned outage

Capacity Curtailment on the EL1-FR-GB border for delivery period 18-05-2025

by JAO

1. TSO(s)*:

ELECLINK

2. Identification of affected Long Term Transmission Rights:

EL1-FR-GB

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

18-05-2025 00:00 - 01:00 963 MW

18-05-2025 01:00 - 02:00 963 MW

18-05-2025 02:00 - 03:00 963 MW

18-05-2025 03:00 - 04:00 963 MW

18-05-2025 04:00 - 05:00 963 MW

18-05-2025 05:00 - 06:00 963 MW

18-05-2025 06:00 - 07:00 963 MW

18-05-2025 07:00 - 08:00 963 MW

18-05-2025 08:00 - 09:00 963 MW

18-05-2025 09:00 - 10:00 963 MW

18-05-2025 10:00 - 11:00 963 MW

18-05-2025 11:00 - 12:00 963 MW

18-05-2025 12:00 - 13:00 963 MW

18-05-2025 13:00 - 14:00 963 MW

18-05-2025 14:00 - 15:00 963 MW

18-05-2025 15:00 - 16:00 963 MW

18-05-2025 16:00 - 17:00 963 MW

18-05-2025 17:00 - 18:00 963 MW

18-05-2025 18:00 - 19:00 963 MW

18-05-2025 19:00 - 20:00 963 MW

18-05-2025 20:00 - 21:00 963 MW

18-05-2025 21:00 - 22:00 963 MW

18-05-2025 22:00 - 23:00 963 MW

18-05-2025 23:00 - 24:00 963 MW

5. Amount of LTTR remaining after curtailment:

18-05-2025 00:00 - 01:00 0 MW

18-05-2025 01:00 - 02:00 0 MW

18-05-2025 02:00 - 03:00 0 MW

18-05-2025 03:00 - 04:00 0 MW

18-05-2025 04:00 - 05:00 0 MW

18-05-2025 05:00 - 06:00 0 MW

18-05-2025 06:00 - 07:00 0 MW

18-05-2025 07:00 - 08:00 0 MW

18-05-2025 08:00 - 09:00 0 MW

18-05-2025 09:00 - 10:00 0 MW

18-05-2025 10:00 - 11:00 0 MW

18-05-2025 11:00 - 12:00 0 MW

18-05-2025 12:00 - 13:00 0 MW

18-05-2025 13:00 - 14:00 0 MW

18-05-2025 14:00 - 15:00 0 MW

18-05-2025 15:00 - 16:00 0 MW

18-05-2025 16:00 - 17:00 0 MW

18-05-2025 17:00 - 18:00 0 MW

18-05-2025 18:00 - 19:00 0 MW

18-05-2025 19:00 - 20:00 0 MW

18-05-2025 20:00 - 21:00 0 MW

18-05-2025 21:00 - 22:00 0 MW

18-05-2025 22:00 - 23:00 0 MW

18-05-2025 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*:

Unplanned maintenance

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

Maintenance for an unplanned outage

 

Capacity Curtailment on the CH-IT border for delivery period 17-05-2025

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:
17-05-2025 09:00 - 10:00 285 MW 
17-05-2025 10:00 - 11:00 285 MW 
17-05-2025 11:00 - 12:00 285 MW 
17-05-2025 12:00 - 13:00 285 MW 
17-05-2025 13:00 - 14:00 285 MW 
17-05-2025 14:00 - 15:00 285 MW 
17-05-2025 15:00 - 16:00 285 MW 
17-05-2025 16:00 - 17:00 285 MW 
17-05-2025 17:00 - 18:00 285 MW

5. Amount of LTTR remaining after curtailment:
17-05-2025 09:00 - 10:00 0 MW 
17-05-2025 10:00 - 11:00 0 MW 
17-05-2025 11:00 - 12:00 0 MW 
17-05-2025 12:00 - 13:00 0 MW 
17-05-2025 13:00 - 14:00 0 MW 
17-05-2025 14:00 - 15:00 0 MW 
17-05-2025 15:00 - 16:00 0 MW 
17-05-2025 16:00 - 17:00 0 MW 
17-05-2025 17:00 - 18:00 0 MW

Capacity Curtailment on the SI-IT border for delivery period 17-05-2025

by JAO

Capacity Curtailment on the SI-IT border for delivery period 17-05-2025
1. TSO(s)*:
TERNA, RTE, APG, SWISSIGRID, ELES
 
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:
17-05-2025 09:00 - 10:00 38 MW
17-05-2025 10:00 - 11:00 38 MW
17-05-2025 11:00 - 12:00 38 MW
17-05-2025 12:00 - 13:00 38 MW
17-05-2025 13:00 - 14:00 38 MW
17-05-2025 14:00 - 15:00 38 MW
17-05-2025 15:00 - 16:00 38 MW
17-05-2025 16:00 - 17:00 38 MW
17-05-2025 17:00 - 18:00 38 MW
 
5. Amount of LTTR remaining after curtailment:
17-05-2025 09:00 - 10:00 0 MW
17-05-2025 10:00 - 11:00 0 MW
17-05-2025 11:00 - 12:00 0 MW
17-05-2025 12:00 - 13:00 0 MW
17-05-2025 13:00 - 14:00 0 MW
17-05-2025 14:00 - 15:00 0 MW
17-05-2025 15:00 - 16:00 0 MW
17-05-2025 16:00 - 17:00 0 MW
17-05-2025 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)*?
 
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 FR-IT border for delivery period 17-05-2025

by JAO

Capacity Curtailment on the FR-IT border for delivery period 17-05-2025
 
1. TSO(s)*:
 
TERNA, RTE, APG, SWISSIGRID, ELES
 
2. Identification of affected Long Term Transmission Rights:
 
FR-IT
 
3. Triggering event:
 
Curtailment to ensure operation remains within Operational Security Limits
 
4. Affected volume in MW / hour for each concerned period:
 
17-05-2025 09:00 - 10:00 423 MW
 
17-05-2025 10:00 - 11:00 423 MW
 
17-05-2025 11:00 - 12:00 423 MW
 
17-05-2025 12:00 - 13:00 423 MW
 
17-05-2025 13:00 - 14:00 423 MW
 
17-05-2025 14:00 - 15:00 423 MW
 
17-05-2025 15:00 - 16:00 423 MW
 
17-05-2025 16:00 - 17:00 423 MW
 
17-05-2025 17:00 - 18:00 423 MW
 
5. Amount of LTTR remaining after curtailment:
 
17-05-2025 09:00 - 10:00 0 MW
 
17-05-2025 10:00 - 11:00 0 MW
 
17-05-2025 11:00 - 12:00 0 MW
 
17-05-2025 12:00 - 13:00 0 MW
 
17-05-2025 13:00 - 14:00 0 MW
 
17-05-2025 14:00 - 15:00 0 MW
 
17-05-2025 15:00 - 16:00 0 MW
 
17-05-2025 16:00 - 17:00 0 MW
 
17-05-2025 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)*?
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 GR-IT and IT-GR borders for delivery period 17-05-2025

by JAO

Capacity Curtailment on the GR-IT and IT-GR borders for delivery period 17-05-2025
 
1. TSO(s)*:
 
TERNA, ADMIE
 
2. Identification of affected Long Term Transmission Rights:
 
GR-IT
 
IT-GR
 
3. Triggering event:
 
Curtailment to ensure operation remains within Operational Security Limits
 
4. Affected volume in MW / hour for each concerned period:
 
17-05-2025 00:00 - 01:00 50 MW
 
17-05-2025 01:00 - 02:00 50 MW
 
17-05-2025 02:00 - 03:00 50 MW
 
17-05-2025 03:00 - 04:00 50 MW
 
17-05-2025 04:00 - 05:00 50 MW
 
17-05-2025 05:00 - 06:00 50 MW
 
17-05-2025 06:00 - 07:00 50 MW
 
17-05-2025 07:00 - 08:00 50 MW
 
17-05-2025 08:00 - 09:00 50 MW
 
17-05-2025 09:00 - 10:00 50 MW
 
17-05-2025 10:00 - 11:00 50 MW
 
17-05-2025 11:00 - 12:00 50 MW
 
17-05-2025 12:00 - 13:00 50 MW
 
17-05-2025 13:00 - 14:00 50 MW
 
17-05-2025 14:00 - 15:00 50 MW
 
17-05-2025 15:00 - 16:00 50 MW
 
17-05-2025 16:00 - 17:00 50 MW
 
17-05-2025 17:00 - 18:00 50 MW
 
17-05-2025 18:00 - 19:00 50 MW
 
17-05-2025 19:00 - 20:00 50 MW
 
17-05-2025 20:00 - 21:00 50 MW
 
17-05-2025 21:00 - 22:00 50 MW
 
17-05-2025 22:00 - 23:00 50 MW
 
17-05-2025 23:00 - 24:00 50 MW
 
5. Amount of LTTR remaining after curtailment:
 
17-05-2025 00:00 - 01:00 0 MW
 
17-05-2025 01:00 - 02:00 0 MW
 
17-05-2025 02:00 - 03:00 0 MW
 
17-05-2025 03:00 - 04:00 0 MW
 
17-05-2025 04:00 - 05:00 0 MW
 
17-05-2025 05:00 - 06:00 0 MW
 
17-05-2025 06:00 - 07:00 0 MW
 
17-05-2025 07:00 - 08:00 0 MW
 
17-05-2025 08:00 - 09:00 0 MW
 
17-05-2025 09:00 - 10:00 0 MW
 
17-05-2025 10:00 - 11:00 0 MW
 
17-05-2025 11:00 - 12:00 0 MW
 
17-05-2025 12:00 - 13:00 0 MW
 
17-05-2025 13:00 - 14:00 0 MW
 
17-05-2025 14:00 - 15:00 0 MW
 
17-05-2025 15:00 - 16:00 0 MW
 
17-05-2025 16:00 - 17:00 0 MW
 
17-05-2025 17:00 - 18:00 0 MW
 
17-05-2025 18:00 - 19:00 0 MW
 
17-05-2025 19:00 - 20:00 0 MW
 
17-05-2025 20:00 - 21:00 0 MW
 
17-05-2025 21:00 - 22:00 0 MW
 
17-05-2025 22:00 - 23:00 0 MW
 
17-05-2025 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*:
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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