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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

Capacity Curtailment on the ME-IT border for delivery period 04-04-2026

by JAO

1. TSO(s)*:

CGES

2. Identification of affected Long Term Transmission Rights:

ME-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

04-04-2026 09:00 - 10:00 400 MW

04-04-2026 10:00 - 11:00 400 MW

04-04-2026 11:00 - 12:00 400 MW

04-04-2026 12:00 - 13:00 400 MW

04-04-2026 13:00 - 14:00 400 MW

04-04-2026 14:00 - 15:00 400 MW

04-04-2026 15:00 - 16:00 400 MW

04-04-2026 16:00 - 17:00 400 MW

04-04-2026 17:00 - 18:00 400 MW

5. Amount of LTTR remaining after curtailment:

04-04-2026 09:00 - 10:00 0 MW

04-04-2026 10:00 - 11:00 0 MW

04-04-2026 11:00 - 12:00 0 MW

04-04-2026 12:00 - 13:00 0 MW

04-04-2026 13:00 - 14:00 0 MW

04-04-2026 14:00 - 15:00 0 MW

04-04-2026 15:00 - 16:00 0 MW

04-04-2026 16:00 - 17:00 0 MW

04-04-2026 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*:

HVDC Monita

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

2026 Auction Calendar update

by JAO

We would like to inform you that as per TSOs request, the 2026 Auction Calendar has been updated on the corridor NLL-BE-GB.

For more details please refer to the Auction Calendar on our webpage http://www.jao.eu/auctions#/calendar/table to find its latest version.

Capacity Curtailment on the ES-FR border for delivery period 03-04-2026

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:

03-04-2026 08:00 - 09:00 1680 MW

03-04-2026 09:00 - 10:00 1680 MW

03-04-2026 10:00 - 11:00 1680 MW

03-04-2026 11:00 - 12:00 1680 MW

03-04-2026 12:00 - 13:00 1680 MW

03-04-2026 13:00 - 14:00 1680 MW

03-04-2026 14:00 - 15:00 1680 MW

03-04-2026 15:00 - 16:00 1680 MW

03-04-2026 16:00 - 17:00 1680 MW

03-04-2026 17:00 - 18:00 1680 MW

5. Amount of LTTR remaining after curtailment:

03-04-2026 08:00 - 09:00 954 MW

03-04-2026 09:00 - 10:00 954 MW

03-04-2026 10:00 - 11:00 954 MW

03-04-2026 11:00 - 12:00 954 MW

03-04-2026 12:00 - 13:00 954 MW

03-04-2026 13:00 - 14:00 954 MW

03-04-2026 14:00 - 15:00 954 MW

03-04-2026 15:00 - 16:00 954 MW

03-04-2026 16:00 - 17:00 954 MW

03-04-2026 17:00 - 18:00 954 MW

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

   03/04/2026

      08:00-09:00 Dambron - Verger

      09:00-10:00 Dambron - Verger

      10:00-11:00 Dambron - Verger

      11:00-12:00 Dambron - Verger

      12:00-13:00 Dambron - Verger

      13:00-14:00 Dambron - Verger

      14:00-15:00 Dambron - Verger

      15:00-16:00 Dambron - Verger

      16:00-17:00 Dambron - Verger

      17:00-18:00 Dambron - Verger

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 15-04-2026

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:

15-04-2026 00:00 - 01:00 1738 MW

15-04-2026 01:00 - 02:00 1738 MW

15-04-2026 02:00 - 03:00 1738 MW

15-04-2026 03:00 - 04:00 1738 MW

15-04-2026 04:00 - 05:00 1738 MW

15-04-2026 05:00 - 06:00 1738 MW

15-04-2026 06:00 - 07:00 1738 MW

15-04-2026 07:00 - 08:00 1738 MW

15-04-2026 08:00 - 09:00 1738 MW

15-04-2026 09:00 - 10:00 1738 MW

15-04-2026 10:00 - 11:00 1738 MW

15-04-2026 11:00 - 12:00 1738 MW

15-04-2026 12:00 - 13:00 1738 MW

15-04-2026 13:00 - 14:00 1738 MW

15-04-2026 14:00 - 15:00 1738 MW

15-04-2026 15:00 - 16:00 1738 MW

15-04-2026 16:00 - 17:00 1738 MW

15-04-2026 17:00 - 18:00 1738 MW

15-04-2026 18:00 - 19:00 1738 MW

15-04-2026 19:00 - 20:00 1738 MW

15-04-2026 20:00 - 21:00 1738 MW

15-04-2026 21:00 - 22:00 1738 MW

15-04-2026 22:00 - 23:00 1738 MW

15-04-2026 23:00 - 24:00 1738 MW

5. Amount of LTTR remaining after curtailment:

15-04-2026 00:00 - 01:00 1435 MW

15-04-2026 01:00 - 02:00 1435 MW

15-04-2026 02:00 - 03:00 1435 MW

15-04-2026 03:00 - 04:00 1435 MW

15-04-2026 04:00 - 05:00 1435 MW

15-04-2026 05:00 - 06:00 1435 MW

15-04-2026 06:00 - 07:00 1435 MW

15-04-2026 07:00 - 08:00 1435 MW

15-04-2026 08:00 - 09:00 1435 MW

15-04-2026 09:00 - 10:00 1435 MW

15-04-2026 10:00 - 11:00 1435 MW

15-04-2026 11:00 - 12:00 1435 MW

15-04-2026 12:00 - 13:00 1435 MW

15-04-2026 13:00 - 14:00 1435 MW

15-04-2026 14:00 - 15:00 1435 MW

15-04-2026 15:00 - 16:00 1435 MW

15-04-2026 16:00 - 17:00 1435 MW

15-04-2026 17:00 - 18:00 1435 MW

15-04-2026 18:00 - 19:00 1435 MW

15-04-2026 19:00 - 20:00 1435 MW

15-04-2026 20:00 - 21:00 1435 MW

15-04-2026 21:00 - 22:00 1435 MW

15-04-2026 22:00 - 23:00 1435 MW

15-04-2026 23:00 - 24:00 1435 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 IF1-FR-GB border for delivery period 15-04-2026

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:

15-04-2026 00:00 - 01:00 1750 MW

15-04-2026 01:00 - 02:00 1750 MW

15-04-2026 02:00 - 03:00 1750 MW

15-04-2026 03:00 - 04:00 1750 MW

15-04-2026 04:00 - 05:00 1750 MW

15-04-2026 05:00 - 06:00 1750 MW

15-04-2026 06:00 - 07:00 1750 MW

15-04-2026 07:00 - 08:00 1750 MW

15-04-2026 08:00 - 09:00 1750 MW

15-04-2026 09:00 - 10:00 1750 MW

15-04-2026 10:00 - 11:00 1750 MW

15-04-2026 11:00 - 12:00 1750 MW

15-04-2026 12:00 - 13:00 1750 MW

15-04-2026 13:00 - 14:00 1750 MW

15-04-2026 14:00 - 15:00 1750 MW

15-04-2026 15:00 - 16:00 1750 MW

15-04-2026 16:00 - 17:00 1750 MW

15-04-2026 17:00 - 18:00 1750 MW

15-04-2026 18:00 - 19:00 1750 MW

15-04-2026 19:00 - 20:00 1750 MW

15-04-2026 20:00 - 21:00 1750 MW

15-04-2026 21:00 - 22:00 1750 MW

15-04-2026 22:00 - 23:00 1750 MW

15-04-2026 23:00 - 24:00 1750 MW

5. Amount of LTTR remaining after curtailment:

15-04-2026 00:00 - 01:00 1464 MW

15-04-2026 01:00 - 02:00 1464 MW

15-04-2026 02:00 - 03:00 1464 MW

15-04-2026 03:00 - 04:00 1464 MW

15-04-2026 04:00 - 05:00 1464 MW

15-04-2026 05:00 - 06:00 1464 MW

15-04-2026 06:00 - 07:00 1464 MW

15-04-2026 07:00 - 08:00 1464 MW

15-04-2026 08:00 - 09:00 1464 MW

15-04-2026 09:00 - 10:00 1464 MW

15-04-2026 10:00 - 11:00 1464 MW

15-04-2026 11:00 - 12:00 1464 MW

15-04-2026 12:00 - 13:00 1464 MW

15-04-2026 13:00 - 14:00 1464 MW

15-04-2026 14:00 - 15:00 1464 MW

15-04-2026 15:00 - 16:00 1464 MW

15-04-2026 16:00 - 17:00 1464 MW

15-04-2026 17:00 - 18:00 1464 MW

15-04-2026 18:00 - 19:00 1464 MW

15-04-2026 19:00 - 20:00 1464 MW

15-04-2026 20:00 - 21:00 1464 MW

15-04-2026 21:00 - 22:00 1464 MW

15-04-2026 22:00 - 23:00 1464 MW

15-04-2026 23:00 - 24:00 1464 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

Subject: 2026 Auction Calendar update

by JAO

We would like to inform you that as per TSOs request, the 2026 Auction Calendar has been updated on the corridor IF2-FR<>GB.

For more details, please refer to the Auction Calendar on our webpage http://www.jao.eu/auctions#/calendar/table to find its latest version.

Capacity Curtailment on the DK-NL border for delivery period 03-04-2026

by JAO

1. TSO(s)*:

TenneT_NL

2. Identification of affected Long Term Transmission Rights:

DK-NL

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

03-04-2026 09:00 - 10:00 199 MW

03-04-2026 10:00 - 11:00 199 MW

03-04-2026 11:00 - 12:00 199 MW

03-04-2026 12:00 - 13:00 199 MW

03-04-2026 13:00 - 14:00 199 MW

03-04-2026 14:00 - 15:00 199 MW

03-04-2026 15:00 - 16:00 199 MW

03-04-2026 16:00 - 17:00 199 MW

03-04-2026 17:00 - 18:00 199 MW

5. Amount of LTTR remaining after curtailment:

03-04-2026 09:00 - 10:00 0 MW

03-04-2026 10:00 - 11:00 0 MW

03-04-2026 11:00 - 12:00 0 MW

03-04-2026 12:00 - 13:00 0 MW

03-04-2026 13:00 - 14:00 0 MW

03-04-2026 14:00 - 15:00 0 MW

03-04-2026 15:00 - 16:00 0 MW

03-04-2026 16:00 - 17:00 0 MW

03-04-2026 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)*?

The remedial actions considered were assessed as not sufficient or ineffective to avoid the expected violation of operational security limit(s).

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.

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