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

URGENT - ME<>IT Daily Auctions for Business Day 15/05/2026 Delayed

by JAO

Please note that the Bid Submission Gate for IT<>ME Daily auctions IT-ME-D-DAILYPRODU-260515-01 and ME-IT-D-DAILYPRODU-260515-01 was delayed.

Please verify the new timings below:

Bid Submission Opening: 09:55

Bid Submission Closing: 10:18

Results Sending: 10:22

Thank you for your understanding.

Urgent PUTO maintenance 18/05/2026

by JAO

Dear All,

Please be informed that PUTO will be unavailable due to a maintenance from 17:15 to 17:45 CET today 13/05/ 2026.

We would like to apologies for any inconvenience this may have caused.

Thank you.

JAO Operations

Capacity Curtailment on the IF1-GB-FR border for delivery period 27-05-2026

by JAO

1. TSO(s)*:

RNP

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:

27-05-2026 00:00 - 01:00 1889 MW

27-05-2026 01:00 - 02:00 1889 MW

27-05-2026 02:00 - 03:00 1889 MW

27-05-2026 03:00 - 04:00 1889 MW

27-05-2026 04:00 - 05:00 1889 MW

27-05-2026 05:00 - 06:00 1889 MW

27-05-2026 06:00 - 07:00 1889 MW

27-05-2026 07:00 - 08:00 1889 MW

27-05-2026 08:00 - 09:00 1889 MW

27-05-2026 09:00 - 10:00 1889 MW

27-05-2026 10:00 - 11:00 1889 MW

27-05-2026 11:00 - 12:00 1889 MW

27-05-2026 12:00 - 13:00 1889 MW

27-05-2026 13:00 - 14:00 1889 MW

27-05-2026 14:00 - 15:00 1889 MW

27-05-2026 15:00 - 16:00 1889 MW

27-05-2026 16:00 - 17:00 1889 MW

27-05-2026 17:00 - 18:00 1889 MW

27-05-2026 18:00 - 19:00 1889 MW

27-05-2026 19:00 - 20:00 1889 MW

27-05-2026 20:00 - 21:00 1889 MW

27-05-2026 21:00 - 22:00 1889 MW

27-05-2026 22:00 - 23:00 1889 MW

27-05-2026 23:00 - 24:00 1889 MW

5. Amount of LTTR remaining after curtailment:

27-05-2026 00:00 - 01:00 1416 MW

27-05-2026 01:00 - 02:00 1416 MW

27-05-2026 02:00 - 03:00 1416 MW

27-05-2026 03:00 - 04:00 1416 MW

27-05-2026 04:00 - 05:00 1416 MW

27-05-2026 05:00 - 06:00 1416 MW

27-05-2026 06:00 - 07:00 1416 MW

27-05-2026 07:00 - 08:00 1416 MW

27-05-2026 08:00 - 09:00 1416 MW

27-05-2026 09:00 - 10:00 1416 MW

27-05-2026 10:00 - 11:00 1416 MW

27-05-2026 11:00 - 12:00 1416 MW

27-05-2026 12:00 - 13:00 1416 MW

27-05-2026 13:00 - 14:00 1416 MW

27-05-2026 14:00 - 15:00 1416 MW

27-05-2026 15:00 - 16:00 1416 MW

27-05-2026 16:00 - 17:00 1416 MW

27-05-2026 17:00 - 18:00 1416 MW

27-05-2026 18:00 - 19:00 1416 MW

27-05-2026 19:00 - 20:00 1416 MW

27-05-2026 20:00 - 21:00 1416 MW

27-05-2026 21:00 - 22:00 1416 MW

27-05-2026 22:00 - 23:00 1416 MW

27-05-2026 23:00 - 24:00 1416 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

Capacity Curtailment on the IF1-FR-GB border for delivery period 27-05-2026

by JAO

1. TSO(s)*:

RNP

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:

27-05-2026 00:00 - 01:00 1900 MW

27-05-2026 01:00 - 02:00 1900 MW

27-05-2026 02:00 - 03:00 1900 MW

27-05-2026 03:00 - 04:00 1900 MW

27-05-2026 04:00 - 05:00 1900 MW

27-05-2026 05:00 - 06:00 1900 MW

27-05-2026 06:00 - 07:00 1900 MW

27-05-2026 07:00 - 08:00 1900 MW

27-05-2026 08:00 - 09:00 1900 MW

27-05-2026 09:00 - 10:00 1900 MW

27-05-2026 10:00 - 11:00 1900 MW

27-05-2026 11:00 - 12:00 1900 MW

27-05-2026 12:00 - 13:00 1900 MW

27-05-2026 13:00 - 14:00 1900 MW

27-05-2026 14:00 - 15:00 1900 MW

27-05-2026 15:00 - 16:00 1900 MW

27-05-2026 16:00 - 17:00 1900 MW

27-05-2026 17:00 - 18:00 1900 MW

27-05-2026 18:00 - 19:00 1900 MW

27-05-2026 19:00 - 20:00 1900 MW

27-05-2026 20:00 - 21:00 1900 MW

27-05-2026 21:00 - 22:00 1900 MW

27-05-2026 22:00 - 23:00 1900 MW

27-05-2026 23:00 - 24:00 1900 MW

5. Amount of LTTR remaining after curtailment:

27-05-2026 00:00 - 01:00 1448 MW

27-05-2026 01:00 - 02:00 1448 MW

27-05-2026 02:00 - 03:00 1448 MW

27-05-2026 03:00 - 04:00 1448 MW

27-05-2026 04:00 - 05:00 1448 MW

27-05-2026 05:00 - 06:00 1448 MW

27-05-2026 06:00 - 07:00 1448 MW

27-05-2026 07:00 - 08:00 1448 MW

27-05-2026 08:00 - 09:00 1448 MW

27-05-2026 09:00 - 10:00 1448 MW

27-05-2026 10:00 - 11:00 1448 MW

27-05-2026 11:00 - 12:00 1448 MW

27-05-2026 12:00 - 13:00 1448 MW

27-05-2026 13:00 - 14:00 1448 MW

27-05-2026 14:00 - 15:00 1448 MW

27-05-2026 15:00 - 16:00 1448 MW

27-05-2026 16:00 - 17:00 1448 MW

27-05-2026 17:00 - 18:00 1448 MW

27-05-2026 18:00 - 19:00 1448 MW

27-05-2026 19:00 - 20:00 1448 MW

27-05-2026 20:00 - 21:00 1448 MW

27-05-2026 21:00 - 22:00 1448 MW

27-05-2026 22:00 - 23:00 1448 MW

27-05-2026 23:00 - 24:00 1448 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

Capacity Curtailment on the FR-ES border for delivery period 14-05-2026

by JAO

1. TSO(s)*:

RTE-TSO

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:

14-05-2026 00:00 - 01:00 2068 MW

14-05-2026 01:00 - 02:00 2068 MW

14-05-2026 02:00 - 03:00 2068 MW

14-05-2026 03:00 - 04:00 2068 MW

14-05-2026 04:00 - 05:00 2068 MW

14-05-2026 05:00 - 06:00 2068 MW

14-05-2026 06:00 - 07:00 2068 MW

5. Amount of LTTR remaining after curtailment:

14-05-2026 00:00 - 01:00 612 MW

14-05-2026 01:00 - 02:00 612 MW

14-05-2026 02:00 - 03:00 612 MW

14-05-2026 03:00 - 04:00 612 MW

14-05-2026 04:00 - 05:00 1367 MW

14-05-2026 05:00 - 06:00 1367 MW

14-05-2026 06:00 - 07:00 1367 MW

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

   14/05/2026

      00:00-01:00 Network Security

      01:00-02:00 Network Security

      02:00-03:00 Network Security

      03:00-04:00 Network Security

      04:00-05:00 Network Security

      05:00-06:00 Network Security

      06:00-07:00 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 IF1-GB-FR border for delivery period 26-05-2026

by JAO

1. TSO(s)*:

RNP

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:

26-05-2026 00:00 - 01:00 1889 MW

26-05-2026 01:00 - 02:00 1889 MW

26-05-2026 02:00 - 03:00 1889 MW

26-05-2026 03:00 - 04:00 1889 MW

26-05-2026 04:00 - 05:00 1889 MW

26-05-2026 05:00 - 06:00 1889 MW

26-05-2026 06:00 - 07:00 1889 MW

26-05-2026 07:00 - 08:00 1889 MW

26-05-2026 08:00 - 09:00 1889 MW

26-05-2026 09:00 - 10:00 1889 MW

26-05-2026 10:00 - 11:00 1889 MW

26-05-2026 11:00 - 12:00 1889 MW

26-05-2026 12:00 - 13:00 1889 MW

26-05-2026 13:00 - 14:00 1889 MW

26-05-2026 14:00 - 15:00 1889 MW

26-05-2026 15:00 - 16:00 1889 MW

26-05-2026 16:00 - 17:00 1889 MW

26-05-2026 17:00 - 18:00 1889 MW

26-05-2026 18:00 - 19:00 1889 MW

26-05-2026 19:00 - 20:00 1889 MW

26-05-2026 20:00 - 21:00 1889 MW

26-05-2026 21:00 - 22:00 1889 MW

26-05-2026 22:00 - 23:00 1889 MW

26-05-2026 23:00 - 24:00 1889 MW

5. Amount of LTTR remaining after curtailment:

26-05-2026 00:00 - 01:00 1416 MW

26-05-2026 01:00 - 02:00 1416 MW

26-05-2026 02:00 - 03:00 1416 MW

26-05-2026 03:00 - 04:00 1416 MW

26-05-2026 04:00 - 05:00 1416 MW

26-05-2026 05:00 - 06:00 1416 MW

26-05-2026 06:00 - 07:00 1416 MW

26-05-2026 07:00 - 08:00 1416 MW

26-05-2026 08:00 - 09:00 1416 MW

26-05-2026 09:00 - 10:00 1416 MW

26-05-2026 10:00 - 11:00 1416 MW

26-05-2026 11:00 - 12:00 1416 MW

26-05-2026 12:00 - 13:00 1416 MW

26-05-2026 13:00 - 14:00 1416 MW

26-05-2026 14:00 - 15:00 1416 MW

26-05-2026 15:00 - 16:00 1416 MW

26-05-2026 16:00 - 17:00 1416 MW

26-05-2026 17:00 - 18:00 1416 MW

26-05-2026 18:00 - 19:00 1416 MW

26-05-2026 19:00 - 20:00 1416 MW

26-05-2026 20:00 - 21:00 1416 MW

26-05-2026 21:00 - 22:00 1416 MW

26-05-2026 22:00 - 23:00 1416 MW

26-05-2026 23:00 - 24:00 1416 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

Capacity Curtailment on the IF1-FR-GB border for delivery period 26-05-2026

by JAO

1. TSO(s)*:

RNP

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:

26-05-2026 00:00 - 01:00 1900 MW

26-05-2026 01:00 - 02:00 1900 MW

26-05-2026 02:00 - 03:00 1900 MW

26-05-2026 03:00 - 04:00 1900 MW

26-05-2026 04:00 - 05:00 1900 MW

26-05-2026 05:00 - 06:00 1900 MW

26-05-2026 06:00 - 07:00 1900 MW

26-05-2026 07:00 - 08:00 1900 MW

26-05-2026 08:00 - 09:00 1900 MW

26-05-2026 09:00 - 10:00 1900 MW

26-05-2026 10:00 - 11:00 1900 MW

26-05-2026 11:00 - 12:00 1900 MW

26-05-2026 12:00 - 13:00 1900 MW

26-05-2026 13:00 - 14:00 1900 MW

26-05-2026 14:00 - 15:00 1900 MW

26-05-2026 15:00 - 16:00 1900 MW

26-05-2026 16:00 - 17:00 1900 MW

26-05-2026 17:00 - 18:00 1900 MW

26-05-2026 18:00 - 19:00 1900 MW

26-05-2026 19:00 - 20:00 1900 MW

26-05-2026 20:00 - 21:00 1900 MW

26-05-2026 21:00 - 22:00 1900 MW

26-05-2026 22:00 - 23:00 1900 MW

26-05-2026 23:00 - 24:00 1900 MW

5. Amount of LTTR remaining after curtailment:

26-05-2026 00:00 - 01:00 1448 MW

26-05-2026 01:00 - 02:00 1448 MW

26-05-2026 02:00 - 03:00 1448 MW

26-05-2026 03:00 - 04:00 1448 MW

26-05-2026 04:00 - 05:00 1448 MW

26-05-2026 05:00 - 06:00 1448 MW

26-05-2026 06:00 - 07:00 1448 MW

26-05-2026 07:00 - 08:00 1448 MW

26-05-2026 08:00 - 09:00 1448 MW

26-05-2026 09:00 - 10:00 1448 MW

26-05-2026 10:00 - 11:00 1448 MW

26-05-2026 11:00 - 12:00 1448 MW

26-05-2026 12:00 - 13:00 1448 MW

26-05-2026 13:00 - 14:00 1448 MW

26-05-2026 14:00 - 15:00 1448 MW

26-05-2026 15:00 - 16:00 1448 MW

26-05-2026 16:00 - 17:00 1448 MW

26-05-2026 17:00 - 18:00 1448 MW

26-05-2026 18:00 - 19:00 1448 MW

26-05-2026 19:00 - 20:00 1448 MW

26-05-2026 20:00 - 21:00 1448 MW

26-05-2026 21:00 - 22:00 1448 MW

26-05-2026 22:00 - 23:00 1448 MW

26-05-2026 23:00 - 24:00 1448 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

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!