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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 FR-CH border for delivery period 21-10-2026

by JAO

1. TSO(s)*:

RTE, SWISSGRID

2. Identification of affected Long Term Transmission Rights:

FR-CH

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:

21-10-2026 00:00 - 01:00 370 MW

21-10-2026 01:00 - 02:00 370 MW

21-10-2026 02:00 - 03:00 370 MW

21-10-2026 03:00 - 04:00 370 MW

21-10-2026 04:00 - 05:00 370 MW

21-10-2026 05:00 - 06:00 370 MW

21-10-2026 06:00 - 07:00 370 MW

21-10-2026 07:00 - 08:00 370 MW

21-10-2026 08:00 - 09:00 370 MW

21-10-2026 09:00 - 10:00 370 MW

21-10-2026 10:00 - 11:00 370 MW

21-10-2026 11:00 - 12:00 370 MW

21-10-2026 12:00 - 13:00 370 MW

21-10-2026 13:00 - 14:00 370 MW

21-10-2026 14:00 - 15:00 370 MW

21-10-2026 15:00 - 16:00 370 MW

21-10-2026 16:00 - 17:00 370 MW

21-10-2026 17:00 - 18:00 370 MW

21-10-2026 18:00 - 19:00 370 MW

21-10-2026 19:00 - 20:00 370 MW

21-10-2026 20:00 - 21:00 370 MW

21-10-2026 21:00 - 22:00 370 MW

21-10-2026 22:00 - 23:00 370 MW

21-10-2026 23:00 - 24:00 370 MW

5. Amount of LTTR remaining after curtailment:

21-10-2026 00:00 - 01:00 0 MW

21-10-2026 01:00 - 02:00 0 MW

21-10-2026 02:00 - 03:00 0 MW

21-10-2026 03:00 - 04:00 0 MW

21-10-2026 04:00 - 05:00 0 MW

21-10-2026 05:00 - 06:00 0 MW

21-10-2026 06:00 - 07:00 0 MW

21-10-2026 07:00 - 08:00 0 MW

21-10-2026 08:00 - 09:00 0 MW

21-10-2026 09:00 - 10:00 0 MW

21-10-2026 10:00 - 11:00 0 MW

21-10-2026 11:00 - 12:00 0 MW

21-10-2026 12:00 - 13:00 0 MW

21-10-2026 13:00 - 14:00 0 MW

21-10-2026 14:00 - 15:00 0 MW

21-10-2026 15:00 - 16:00 0 MW

21-10-2026 16:00 - 17:00 0 MW

21-10-2026 17:00 - 18:00 0 MW

21-10-2026 18:00 - 19:00 0 MW

21-10-2026 19:00 - 20:00 0 MW

21-10-2026 20:00 - 21:00 0 MW

21-10-2026 21:00 - 22:00 0 MW

21-10-2026 22:00 - 23:00 0 MW

21-10-2026 23:00 - 24:00 0 MW

Capacity Curtailment on the IF1-GB-FR and IF1-FR-GB border for delivery period 07-11-2026 - 13-11-2026

by JAO

1. TSO(s)*:

NGIC

2. Identification of affected Long Term Transmission Rights:

IF1-GB-FR & 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:

00:00 - 01:00 1200 MW

01:00 - 02:00 1200 MW

02:00 - 03:00 1200 MW

03:00 - 04:00 1200 MW

04:00 - 05:00 1200 MW

05:00 - 06:00 1200 MW

06:00 - 07:00 1200 MW

07:00 - 08:00 1200 MW

08:00 - 09:00 1200 MW

09:00 - 10:00 1200 MW

10:00 - 11:00 1200 MW

11:00 - 12:00 1200 MW

12:00 - 13:00 1200 MW

13:00 - 14:00 1200 MW

14:00 - 15:00 1200 MW

15:00 - 16:00 1200 MW

16:00 - 17:00 1200 MW

17:00 - 18:00 1200 MW

18:00 - 19:00 1200 MW

19:00 - 20:00 1200 MW

20:00 - 21:00 1200 MW

21:00 - 22:00 1200 MW

22:00 - 23:00 1200 MW

23:00 - 24:00 1200 MW

every day 07-11-2026 - 13-11-2026

5. Amount of LTTR remaining after curtailment:

00:00 - 01:00 966 MW

01:00 - 02:00 966 MW

02:00 - 03:00 966 MW

03:00 - 04:00 966 MW

04:00 - 05:00 966 MW

05:00 - 06:00 966 MW

06:00 - 07:00 966 MW

07:00 - 08:00 966 MW

08:00 - 09:00 966 MW

09:00 - 10:00 966 MW

10:00 - 11:00 966 MW

11:00 - 12:00 966 MW

12:00 - 13:00 966 MW

13:00 - 14:00 966 MW

14:00 - 15:00 966 MW

15:00 - 16:00 966 MW

16:00 - 17:00 966 MW

17:00 - 18:00 966 MW

18:00 - 19:00 966 MW

19:00 - 20:00 966 MW

20:00 - 21:00 966 MW

21:00 - 22:00 966 MW

22:00 - 23:00 966 MW

23:00 - 24:00 966 MW

every day 07-11-2026 - 13-11-2026

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 planned maintenance

Publication of the 4th amendment of the Regional Specific Annex for the CCR Core to the HAR

by JAO

Following the approval of the 4th amendment ofthe Regional Specific Annex for the CCR Core to the Harmonised Allocation Rules (HAR) by the relevant Regulatory Authorities, the updated Annex has been published in the relevant section of the JAO website as part of the HAR documentation.

This amendment will enter into force on 18 November 2026 and shall apply to long-term transmission rights with a delivery period starting from 1st January 2027.

The amendment introduces the following key changes:

  • Inclusion of the SEM-FR (Ireland-France) bidding zone border within the CCR Core Regional Specific Annex and introduction of a compensation cap applicable to this border in accordance with the HAR, effective from the date of operation of the interconnector.
  • Removal of the provisions concerning the constraints of the optimisation function for the CZ-SK-DE/LU-PL borders following the go-live of the CORE long-term flow-based allocation.
  • Introduction of enhanced provisions for the return of Long-Term Transmission Rights on HVDC interconnectors (BE<>DE/LU and SEM<>FR).

2026 Auction Calendar update

by JAO

Dear Market Participants,

We would like to inform you that as per TSOs request, the 2026 Auction Calendar has been updated on the corridor EL1-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.

Best regards,

JAO Operations Team

Urgent Market Update: Cancellation of HR-RS-D-DAILYPRODU-261020-03 and RS-HR-D-DAILYPRODU-261020-03 for Market Period 20/10/2026

by JAO

According to the border specific annex, the auctions results cannot be published after 10:00.

Therefore, the HR<>RS auction ID HR-RS-D-DAILYPRODU-261020-03 and RS- HR-D-DAILYPRODU-261020-03 have been cancelled.

Urgent Market Update: Cancellation of 2nd round of auction RS<>HR for Market Period 20/10/2026 and creation of 3rd round

by JAO

As per TSO request, the HR<>RS auctions with ID HR-RS-D-DAILYPRODU-261020-02 and RS-HR-D-DAILYPRODU-261020-02 have been cancelled.

Please note that the 3rd round of the daily auctions are created for the corridor RS<>HR with auction ID HR-RS-D-DAILYPRODU-261020-03 and RS-HR-D-DAILYPRODU-261020-03.

The bidding gates opening at 9:55 and closing at 10:10
The results will be published at 10:15

Urgent Market Update: Cancellation of HR<>RS-D-DAILYPRODU-261020-01 for Market Period 20/10/2026 and creation of 2nd round

by JAO

As per TSO request, the HR<>RS auctions with ID HR-RS-D-DAILYPRODU-261020-01 and RS-HR-D-DAILYPRODU-261020-01 have been cancelled.

 

Please note that the 2nd round of the daily auction for the corridor RS<>HR with auction ID
A second round will take place with the auction id HR-RS-D-DAILYPRODU-261020-02 and RS-HR-D-DAILYPRODU-261020-02 bidding gates opening at 9:50 and closing at 10:10


The results will be published at 10:15

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. 

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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