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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
  • 500+
    Registered market participants
  • 26k+
    Auctions held annually
  • 100%
    Auction tool availability
  • 80+
    Employees
  • 50
    TSOs serviced

Latest market messages

Delay on Bid Submission Gate Opening

by JAO

Dear Market Participants,

Please note that, due a technical issue, the bid submission gate for the following auctions is still not open:

IF2-GB-FR-I-ID0012-250726-01

IF2-FR-GB-I-ID0012-250726-01

IF1-GB-FR-I-ID0008-250726-01

IF1-FR-GB-I-ID0008-250726-01

As soon as the issue is fixed, we will inform you accordingly.

Kind regards,

JAO Operations

Intraday Auctions of IF1 and 2 Corridors Cancelled

by JAO

Dear Market Participants,

Please note that the following auctions were cancelled, and no 2nd round will take place:

IF1-FR-GB-I-ID2024-250725-01

IF1-GB-FR-I-ID2024-250725-01

IF2-FR-GB-I-ID2024-250725-01

IF2-GB-FR-I-ID2024-250725-01

Thank you for your understanding.

Kind regards,

JAO Operations

Delay on Bid Submission Gate Opening

by JAO

Dear Market Participants,

Please note that, due a technical issue, the bid submission gate for the following auctions is still not open:

IF1-FR-GB-I-ID2024-250725-01
IF1-GB-FR-I-ID2024-250725-01
IF2-FR-GB-I-ID2024-250725-01
IF2-GB-FR-I-ID2024-250725-01

As soon as the issue is fixed, we will inform you accordingly.

Kind regards,

JAO Operations

Publication for IDA 1 data in Publication Tool for BD 25/07/2025

by JAO

Dear Market Participants,

Please note that, due to the partial decoupling of IDA 1, the data for the delivery date of 25/07/2025 will not be available for IDA 1 in both CoreID CCR and IBWT IDA Publication tool.

Thank you for your understanding.

Best regards,

Operations Team

Capacity Curtailment on the ES-FR border for delivery period 25-07-2025

by JAO

1. TSO(s)*:

RTE, REE

2. Identification of affected Long Term Transmission Rights:

ES-FR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

25-07-2025 15:00 - 16:00 720 MW

25-07-2025 16:00 - 17:00 720 MW

25-07-2025 17:00 - 18:00 720 MW

5. Amount of LTTR remaining after curtailment:

25-07-2025 15:00 - 16:00 587 MW

25-07-2025 16:00 - 17:00 587 MW

25-07-2025 17:00 - 18:00 587 MW

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

   25/07/2025

      15:00-16:00 Network Security

      16:00-17:00 Network Security

      17:00-18:00 Network Security

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

   The available remedial actions were assessed as insufficient or ineffective to avoid the violation of operational security limits

Capacity Curtailment on the FR-ES border for delivery period 25-07-2025

by JAO

1. TSO(s)*:

RTE, REE

2. Identification of affected Long Term Transmission Rights:

FR-ES

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

25-07-2025 00:00 - 01:00 1500 MW

25-07-2025 01:00 - 02:00 1500 MW

25-07-2025 02:00 - 03:00 1500 MW

25-07-2025 03:00 - 04:00 1500 MW

25-07-2025 04:00 - 05:00 1500 MW

25-07-2025 05:00 - 06:00 1500 MW

25-07-2025 06:00 - 07:00 1500 MW

25-07-2025 07:00 - 08:00 1500 MW

5. Amount of LTTR remaining after curtailment:

25-07-2025 00:00 - 01:00 1075 MW

25-07-2025 01:00 - 02:00 1075 MW

25-07-2025 02:00 - 03:00 1075 MW

25-07-2025 03:00 - 04:00 1075 MW

25-07-2025 04:00 - 05:00 1075 MW

25-07-2025 05:00 - 06:00 1075 MW

25-07-2025 06:00 - 07:00 1075 MW

25-07-2025 07:00 - 08:00 1075 MW

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

   25/07/2025

      15:00-16:00 Network Security

      16:00-17:00 Network Security

      17:00-18:00 Network Security

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

   The available remedial actions were assessed as insufficient or ineffective to avoid the violation of operational security limits

Capacity Curtailment on the IT-FR border for delivery period 25-07-2025

by JAO

1. TSO(s)*:

TERNA

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:

25-07-2025 19:00 - 20:00 1870 MW

25-07-2025 20:00 - 21:00 1870 MW

25-07-2025 21:00 - 22:00 1870 MW

5. Amount of LTTR remaining after curtailment:

25-07-2025 19:00 - 20:00 1536 MW

25-07-2025 20:00 - 21:00 1536 MW

25-07-2025 21:00 - 22:00 1536 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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Frequently asked questions

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

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