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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.

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

Latest market messages

Publication of Prefinal computation data for Business Day 04/06/2025

by JAO

Dear Market Participants,

We would like to inform you that the prefinal computation data for business day 04/06/2025 on CORE CCR PUTO will be published with delay .

Thank you for your understanding.

Kind regards,

JAO Operations

Capacity Curtailment on the GR-IT border for delivery period 04-06-2025

by JAO

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:

04-06-2025 00:00 - 01:00 450 MW

04-06-2025 01:00 - 02:00 450 MW

04-06-2025 02:00 - 03:00 450 MW

04-06-2025 03:00 - 04:00 450 MW

04-06-2025 04:00 - 05:00 450 MW

04-06-2025 05:00 - 06:00 450 MW

04-06-2025 06:00 - 07:00 450 MW

04-06-2025 07:00 - 08:00 450 MW

04-06-2025 08:00 - 09:00 450 MW

04-06-2025 09:00 - 10:00 450 MW

04-06-2025 10:00 - 11:00 450 MW

04-06-2025 11:00 - 12:00 450 MW

04-06-2025 12:00 - 13:00 450 MW

04-06-2025 13:00 - 14:00 450 MW

04-06-2025 14:00 - 15:00 450 MW

04-06-2025 15:00 - 16:00 450 MW

04-06-2025 16:00 - 17:00 450 MW

04-06-2025 17:00 - 18:00 450 MW

04-06-2025 18:00 - 19:00 450 MW

04-06-2025 19:00 - 20:00 450 MW

04-06-2025 20:00 - 21:00 450 MW

04-06-2025 21:00 - 22:00 450 MW

04-06-2025 22:00 - 23:00 450 MW

04-06-2025 23:00 - 24:00 450 MW

5. Amount of LTTR remaining after curtailment:

04-06-2025 00:00 - 01:00 0 MW

04-06-2025 01:00 - 02:00 0 MW

04-06-2025 02:00 - 03:00 0 MW

04-06-2025 03:00 - 04:00 0 MW

04-06-2025 04:00 - 05:00 0 MW

04-06-2025 05:00 - 06:00 0 MW

04-06-2025 06:00 - 07:00 0 MW

04-06-2025 07:00 - 08:00 0 MW

04-06-2025 08:00 - 09:00 0 MW

04-06-2025 09:00 - 10:00 0 MW

04-06-2025 10:00 - 11:00 0 MW

04-06-2025 11:00 - 12:00 0 MW

04-06-2025 12:00 - 13:00 0 MW

04-06-2025 13:00 - 14:00 0 MW

04-06-2025 14:00 - 15:00 0 MW

04-06-2025 15:00 - 16:00 0 MW

04-06-2025 16:00 - 17:00 0 MW

04-06-2025 17:00 - 18:00 0 MW

04-06-2025 18:00 - 19:00 0 MW

04-06-2025 19:00 - 20:00 0 MW

04-06-2025 20:00 - 21:00 0 MW

04-06-2025 21:00 - 22:00 0 MW

04-06-2025 22:00 - 23:00 0 MW

04-06-2025 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

Capacity Curtailment on the IT-GR border for delivery period 04-06-2025

by JAO

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:

04-06-2025 00:00 - 01:00 450 MW

04-06-2025 01:00 - 02:00 450 MW

04-06-2025 02:00 - 03:00 450 MW

04-06-2025 03:00 - 04:00 450 MW

04-06-2025 04:00 - 05:00 450 MW

04-06-2025 05:00 - 06:00 450 MW

04-06-2025 06:00 - 07:00 450 MW

04-06-2025 07:00 - 08:00 450 MW

04-06-2025 08:00 - 09:00 450 MW

04-06-2025 09:00 - 10:00 450 MW

04-06-2025 10:00 - 11:00 450 MW

04-06-2025 11:00 - 12:00 450 MW

04-06-2025 12:00 - 13:00 450 MW

04-06-2025 13:00 - 14:00 450 MW

04-06-2025 14:00 - 15:00 450 MW

04-06-2025 15:00 - 16:00 450 MW

04-06-2025 16:00 - 17:00 450 MW

04-06-2025 17:00 - 18:00 450 MW

04-06-2025 18:00 - 19:00 450 MW

04-06-2025 19:00 - 20:00 450 MW

04-06-2025 20:00 - 21:00 450 MW

04-06-2025 21:00 - 22:00 450 MW

04-06-2025 22:00 - 23:00 450 MW

04-06-2025 23:00 - 24:00 450 MW

5. Amount of LTTR remaining after curtailment:

04-06-2025 00:00 - 01:00 0 MW

04-06-2025 01:00 - 02:00 0 MW

04-06-2025 02:00 - 03:00 0 MW

04-06-2025 03:00 - 04:00 0 MW

04-06-2025 04:00 - 05:00 0 MW

04-06-2025 05:00 - 06:00 0 MW

04-06-2025 06:00 - 07:00 0 MW

04-06-2025 07:00 - 08:00 0 MW

04-06-2025 08:00 - 09:00 0 MW

04-06-2025 09:00 - 10:00 0 MW

04-06-2025 10:00 - 11:00 0 MW

04-06-2025 11:00 - 12:00 0 MW

04-06-2025 12:00 - 13:00 0 MW

04-06-2025 13:00 - 14:00 0 MW

04-06-2025 14:00 - 15:00 0 MW

04-06-2025 15:00 - 16:00 0 MW

04-06-2025 16:00 - 17:00 0 MW

04-06-2025 17:00 - 18:00 0 MW

04-06-2025 18:00 - 19:00 0 MW

04-06-2025 19:00 - 20:00 0 MW

04-06-2025 20:00 - 21:00 0 MW

04-06-2025 21:00 - 22:00 0 MW

04-06-2025 22:00 - 23:00 0 MW

04-06-2025 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

Publication of IDCC (b) data for Business Day 03/06/2025

by JAO

Dear Market Participants,

We would like to inform you that Core ID CCR IDCC (b) data for business day 03/06/2025, will not be published as it is not available in CCC Tool.

Thank you for your understanding.

Kind regards,

JAO Operations

Publication Tool data for IDA1 Business Day 03/06/2025

by JAO

Dear Market Participants,

Please be informed that due to IDA1 cancellation, data for IDA1 will not be available in Publication Tool for business day 03/06/2025.

Kind regards,

Operations Team

Capacity Curtailment on the EE-LV border for delivery period 03-06-2025

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:

03-06-2025 00:00 - 01:00 500 MW

03-06-2025 01:00 - 02:00 500 MW

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

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

03-06-2025 04:00 - 05:00 500 MW

03-06-2025 05:00 - 06:00 500 MW

03-06-2025 06:00 - 07:00 500 MW

03-06-2025 07:00 - 08:00 500 MW

03-06-2025 08:00 - 09:00 500 MW

03-06-2025 09:00 - 10:00 500 MW

03-06-2025 10:00 - 11:00 500 MW

03-06-2025 11:00 - 12:00 500 MW

03-06-2025 12:00 - 13:00 500 MW

03-06-2025 13:00 - 14:00 500 MW

03-06-2025 14:00 - 15:00 500 MW

03-06-2025 15:00 - 16:00 500 MW

03-06-2025 16:00 - 17:00 500 MW

03-06-2025 17:00 - 18:00 500 MW

03-06-2025 18:00 - 19:00 500 MW

03-06-2025 19:00 - 20:00 500 MW

03-06-2025 20:00 - 21:00 500 MW

03-06-2025 21:00 - 22:00 500 MW

03-06-2025 22:00 - 23:00 500 MW

03-06-2025 23:00 - 24:00 500 MW

5. Amount of LTTR remaining after curtailment:

03-06-2025 00:00 - 01:00 458 MW

03-06-2025 01:00 - 02:00 458 MW

03-06-2025 02:00 - 03:00 458 MW

03-06-2025 03:00 - 04:00 458 MW

03-06-2025 04:00 - 05:00 457 MW

03-06-2025 05:00 - 06:00 459 MW

03-06-2025 06:00 - 07:00 458 MW

03-06-2025 07:00 - 08:00 464 MW

03-06-2025 08:00 - 09:00 385 MW

03-06-2025 09:00 - 10:00 390 MW

03-06-2025 10:00 - 11:00 385 MW

03-06-2025 11:00 - 12:00 374 MW

03-06-2025 12:00 - 13:00 374 MW

03-06-2025 13:00 - 14:00 374 MW

03-06-2025 14:00 - 15:00 374 MW

03-06-2025 15:00 - 16:00 374 MW

03-06-2025 16:00 - 17:00 373 MW

03-06-2025 17:00 - 18:00 366 MW

03-06-2025 18:00 - 19:00 363 MW

03-06-2025 19:00 - 20:00 360 MW

03-06-2025 20:00 - 21:00 360 MW

03-06-2025 21:00 - 22:00 360 MW

03-06-2025 22:00 - 23:00 360 MW

03-06-2025 23:00 - 24:00 360 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

Publication of IDCC (b) data for Business Day 02/06/2025

by JAO

Dear Market Participants,

We would like to inform you that Validation Reduction ATC data for the delivery date of 02/06/2025, for the Core ID CCR IDCC (b) will be published with delay until further notice.

Thank you for your understanding.

Kind regards,

JAO Operations

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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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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Frequently asked questions

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

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