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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.

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

430+

Registered Market Participants
20k+

Auctions per year
100 %

Auction Tool Availability
85

Employees
47

TSOs serviced

Latest market messages

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Scheduled maintenance on 11/12/2023 and 14/12/2023

Published: 11/12/2023 | 12:40by JAO
Go-live - auctions on Hungary - Republic of Serbia

Published: 11/12/2023 | 11:38by JAO
Bid-submission gate extended Daily Auction BD 12/12/2023

Published: 11/12/2023 | 09:26by JAO
Capacity Curtailment on the IT-AT border for delivery 12-12-2023

Published: 11/12/2023 | 08:38by JAO
Capacity Curtailment on the AT-IT border for delivery 12-12-2023

Published: 11/12/2023 | 08:22by JAO
Bid-submission gate extended Daily Auction BD 11/12/2023

Published: 10/12/2023 | 09:22by JAO
Capacity Curtailment on the IF1 border for delivery 18-12-2023

Published: 10/12/2023 | 07:52by JAO

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Dear Market Participant,

Please, be informed that the following services might encounter temporary unavailability on 11/12/2023 and 14/12/2023, between 18:00 and 19:00 CET due to maintenance.

11/12/2023:

Jira Service Desk
Publication Tool
Utility Tool

14/12/2023:

JAO website

Thank you for your understanding.

Best regards,

JAO Operations Team

Exciting news! The long-term auctions for the HURS corridor are about to start. Tomorrow, December 12th, marks the launch of the yearly auctions for 2024, followed by the monthly auctions for January 2024 on December 22nd. These auctions will respectively close on 19^th and 28^th Dec with a dispute submission period of half a day.

We strongly advise keeping a close eye on the closing dates and dispute windows for these auctions. The latest timings are available via your eCAT application or from the auction calendar.

Beginning December 13th, 2023, mock daily auctions featuring 0 MW ATC will be held. These sessions are designed to allow you to test your webservice connectivity and get acquainted with the new day-ahead auctions on the eCAT platform. The launch date for the live day-ahead auctions is still expected on 31st Dec for delivery 1st Jan, 2024.

For any additional information, feel free to reach out to our experts through our regular communication channels.

Dear Market Participants,

In relation with the Market communication sent on 28^th of November ‘23, we would like to inform you that the bid submission gate of the following DAILY Auction has been extended:

Daily Auctions for BD 12 Dec. 23: IF1-FR-GB extended by 10 Minutes.

Following the extension of the gate, the Programming Authorizations will be sent with a delay as well.

Best regards,

JAO Operations

1. TSO(s)*:

2. Identification of affected Long Term Transmission Rights:

IT-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

12-12-2023 00:00 - 01:00 46 MW

12-12-2023 01:00 - 02:00 46 MW

12-12-2023 02:00 - 03:00 46 MW

12-12-2023 03:00 - 04:00 46 MW

12-12-2023 04:00 - 05:00 46 MW

12-12-2023 05:00 - 06:00 46 MW

12-12-2023 06:00 - 07:00 46 MW

12-12-2023 07:00 - 08:00 46 MW

12-12-2023 08:00 - 09:00 46 MW

12-12-2023 09:00 - 10:00 46 MW

12-12-2023 10:00 - 11:00 46 MW

12-12-2023 11:00 - 12:00 46 MW

12-12-2023 12:00 - 13:00 46 MW

12-12-2023 13:00 - 14:00 46 MW

12-12-2023 14:00 - 15:00 46 MW

12-12-2023 15:00 - 16:00 46 MW

12-12-2023 16:00 - 17:00 46 MW

12-12-2023 17:00 - 18:00 46 MW

12-12-2023 18:00 - 19:00 46 MW

12-12-2023 19:00 - 20:00 46 MW

12-12-2023 20:00 - 21:00 46 MW

12-12-2023 21:00 - 22:00 46 MW

12-12-2023 22:00 - 23:00 46 MW

12-12-2023 23:00 - 24:00 46 MW

5. Amount of LTTR remaining after curtailment:

12-12-2023 00:00 - 01:00 0 MW

12-12-2023 01:00 - 02:00 0 MW

12-12-2023 02:00 - 03:00 0 MW

12-12-2023 03:00 - 04:00 0 MW

12-12-2023 04:00 - 05:00 0 MW

12-12-2023 05:00 - 06:00 0 MW

12-12-2023 06:00 - 07:00 0 MW

12-12-2023 07:00 - 08:00 0 MW

12-12-2023 08:00 - 09:00 0 MW

12-12-2023 09:00 - 10:00 0 MW

12-12-2023 10:00 - 11:00 0 MW

12-12-2023 11:00 - 12:00 0 MW

12-12-2023 12:00 - 13:00 0 MW

12-12-2023 13:00 - 14:00 0 MW

12-12-2023 14:00 - 15:00 0 MW

12-12-2023 15:00 - 16:00 0 MW

12-12-2023 16:00 - 17:00 0 MW

12-12-2023 17:00 - 18:00 0 MW

12-12-2023 18:00 - 19:00 0 MW

12-12-2023 19:00 - 20:00 0 MW

12-12-2023 20:00 - 21:00 0 MW

12-12-2023 21:00 - 22:00 0 MW

12-12-2023 22:00 - 23:00 0 MW

12-12-2023 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

1. TSO(s)*:

2. Identification of affected Long Term Transmission Rights:

AT-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

12-12-2023 00:00 - 01:00 152 MW

12-12-2023 01:00 - 02:00 152 MW

12-12-2023 02:00 - 03:00 152 MW

12-12-2023 03:00 - 04:00 152 MW

12-12-2023 04:00 - 05:00 152 MW

12-12-2023 05:00 - 06:00 152 MW

12-12-2023 06:00 - 07:00 152 MW

12-12-2023 07:00 - 08:00 152 MW

12-12-2023 08:00 - 09:00 152 MW

12-12-2023 09:00 - 10:00 152 MW

12-12-2023 10:00 - 11:00 152 MW

12-12-2023 11:00 - 12:00 152 MW

12-12-2023 12:00 - 13:00 152 MW

12-12-2023 13:00 - 14:00 152 MW

12-12-2023 14:00 - 15:00 152 MW

12-12-2023 15:00 - 16:00 152 MW

12-12-2023 16:00 - 17:00 152 MW

12-12-2023 17:00 - 18:00 152 MW

12-12-2023 18:00 - 19:00 152 MW

12-12-2023 19:00 - 20:00 152 MW

12-12-2023 20:00 - 21:00 152 MW

12-12-2023 21:00 - 22:00 152 MW

12-12-2023 22:00 - 23:00 152 MW

12-12-2023 23:00 - 24:00 152 MW

5. Amount of LTTR remaining after curtailment:

12-12-2023 00:00 - 01:00 0 MW

12-12-2023 01:00 - 02:00 0 MW

12-12-2023 02:00 - 03:00 0 MW

12-12-2023 03:00 - 04:00 0 MW

12-12-2023 04:00 - 05:00 0 MW

12-12-2023 05:00 - 06:00 0 MW

12-12-2023 06:00 - 07:00 0 MW

12-12-2023 07:00 - 08:00 0 MW

12-12-2023 08:00 - 09:00 0 MW

12-12-2023 09:00 - 10:00 0 MW

12-12-2023 10:00 - 11:00 0 MW

12-12-2023 11:00 - 12:00 0 MW

12-12-2023 12:00 - 13:00 0 MW

12-12-2023 13:00 - 14:00 0 MW

12-12-2023 14:00 - 15:00 0 MW

12-12-2023 15:00 - 16:00 0 MW

12-12-2023 16:00 - 17:00 0 MW

12-12-2023 17:00 - 18:00 0 MW

12-12-2023 18:00 - 19:00 0 MW

12-12-2023 19:00 - 20:00 0 MW

12-12-2023 20:00 - 21:00 0 MW

12-12-2023 21:00 - 22:00 0 MW

12-12-2023 22:00 - 23:00 0 MW

12-12-2023 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

Dear Market Participants,

In relation with the Market communication sent on 28th of November 2023, we would like to inform you that the bid submission gates of the following DAILY Auctions have been extended:

Daily Auctions for BD 11 Dec. 23: IT-CH, IF1-FR-GB extended by 10 Minutes.

Following the extension of the gates, the Programming Authorizations will be sent with a delay as well.

Best regards,

JAO Operations

1. TSO(s)*:

National Grid Interconnectors Limited (NGIC) and RTE EDF Transport S.A. (RTE)

2. Identification of affected Long Term Transmission Rights:

IF1-FR-GB

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:

18-12-2023 11:00 - 12:00 1450 MW

18-12-2023 12:00 - 13:00 1450 MW

18-12-2023 13:00 - 14:00 1450 MW

18-12-2023 14:00 - 15:00 1450 MW

5. Amount of LTTR remaining after curtailment:

IF1-FR-GB

18-12-2023 11:00 - 12:00 954 MW

18-12-2023 12:00 - 13:00 954 MW

18-12-2023 13:00 - 14:00 954 MW

18-12-2023 14:00 - 15:00 954 MW

IF1-GB-FR

18-12-2023 11:00 - 12:00 968 MW

18-12-2023 12:00 - 13:00 968 MW

18-12-2023 13:00 - 14:00 968 MW

18-12-2023 14:00 - 15:00 968 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

Resource Center

This section contains key information for market participants such as user guides, forms, auction rules, nomination deadlines and other documents.

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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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We created a user guide to support the onboarding of market participants. Learn more about the steps to register, the required documents and our service desk platform.

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