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

Capacity Curtailment on the IF1-GB-FR border for delivery period 14-05-2026

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:

14-05-2026 00:00 - 01:00 1889 MW

14-05-2026 01:00 - 02:00 1889 MW

14-05-2026 02:00 - 03:00 1889 MW

14-05-2026 03:00 - 04:00 1889 MW

14-05-2026 04:00 - 05:00 1889 MW

14-05-2026 05:00 - 06:00 1889 MW

14-05-2026 06:00 - 07:00 1889 MW

14-05-2026 07:00 - 08:00 1889 MW

14-05-2026 08:00 - 09:00 1889 MW

14-05-2026 09:00 - 10:00 1889 MW

14-05-2026 10:00 - 11:00 1889 MW

14-05-2026 11:00 - 12:00 1889 MW

14-05-2026 12:00 - 13:00 1889 MW

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

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

14-05-2026 15:00 - 16:00 1889 MW

14-05-2026 16:00 - 17:00 1889 MW

14-05-2026 17:00 - 18:00 1889 MW

14-05-2026 18:00 - 19:00 1889 MW

14-05-2026 19:00 - 20:00 1889 MW

14-05-2026 20:00 - 21:00 1889 MW

14-05-2026 21:00 - 22:00 1889 MW

14-05-2026 22:00 - 23:00 1889 MW

14-05-2026 23:00 - 24:00 1889 MW

5. Amount of LTTR remaining after curtailment:

14-05-2026 00:00 - 01:00 1416 MW

14-05-2026 01:00 - 02:00 1416 MW

14-05-2026 02:00 - 03:00 1416 MW

14-05-2026 03:00 - 04:00 1416 MW

14-05-2026 04:00 - 05:00 1416 MW

14-05-2026 05:00 - 06:00 1416 MW

14-05-2026 06:00 - 07:00 1416 MW

14-05-2026 07:00 - 08:00 1416 MW

14-05-2026 08:00 - 09:00 1416 MW

14-05-2026 09:00 - 10:00 1416 MW

14-05-2026 10:00 - 11:00 1416 MW

14-05-2026 11:00 - 12:00 1416 MW

14-05-2026 12:00 - 13:00 1416 MW

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

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

14-05-2026 15:00 - 16:00 1416 MW

14-05-2026 16:00 - 17:00 1416 MW

14-05-2026 17:00 - 18:00 1416 MW

14-05-2026 18:00 - 19:00 1416 MW

14-05-2026 19:00 - 20:00 1416 MW

14-05-2026 20:00 - 21:00 1416 MW

14-05-2026 21:00 - 22:00 1416 MW

14-05-2026 22:00 - 23:00 1416 MW

14-05-2026 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*:

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 14-05-2026

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:

14-05-2026 00:00 - 01:00 1900 MW

14-05-2026 01:00 - 02:00 1900 MW

14-05-2026 02:00 - 03:00 1900 MW

14-05-2026 03:00 - 04:00 1900 MW

14-05-2026 04:00 - 05:00 1900 MW

14-05-2026 05:00 - 06:00 1900 MW

14-05-2026 06:00 - 07:00 1900 MW

14-05-2026 07:00 - 08:00 1900 MW

14-05-2026 08:00 - 09:00 1900 MW

14-05-2026 09:00 - 10:00 1900 MW

14-05-2026 10:00 - 11:00 1900 MW

14-05-2026 11:00 - 12:00 1900 MW

14-05-2026 12:00 - 13:00 1900 MW

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

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

14-05-2026 15:00 - 16:00 1900 MW

14-05-2026 16:00 - 17:00 1900 MW

14-05-2026 17:00 - 18:00 1900 MW

14-05-2026 18:00 - 19:00 1900 MW

14-05-2026 19:00 - 20:00 1900 MW

14-05-2026 20:00 - 21:00 1900 MW

14-05-2026 21:00 - 22:00 1900 MW

14-05-2026 22:00 - 23:00 1900 MW

14-05-2026 23:00 - 24:00 1900 MW

5. Amount of LTTR remaining after curtailment:

14-05-2026 00:00 - 01:00 1448 MW

14-05-2026 01:00 - 02:00 1448 MW

14-05-2026 02:00 - 03:00 1448 MW

14-05-2026 03:00 - 04:00 1448 MW

14-05-2026 04:00 - 05:00 1448 MW

14-05-2026 05:00 - 06:00 1448 MW

14-05-2026 06:00 - 07:00 1448 MW

14-05-2026 07:00 - 08:00 1448 MW

14-05-2026 08:00 - 09:00 1448 MW

14-05-2026 09:00 - 10:00 1448 MW

14-05-2026 10:00 - 11:00 1448 MW

14-05-2026 11:00 - 12:00 1448 MW

14-05-2026 12:00 - 13:00 1448 MW

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

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

14-05-2026 15:00 - 16:00 1448 MW

14-05-2026 16:00 - 17:00 1448 MW

14-05-2026 17:00 - 18:00 1448 MW

14-05-2026 18:00 - 19:00 1448 MW

14-05-2026 19:00 - 20:00 1448 MW

14-05-2026 20:00 - 21:00 1448 MW

14-05-2026 21:00 - 22:00 1448 MW

14-05-2026 22:00 - 23:00 1448 MW

14-05-2026 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*:

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 ME-IT border for delivery period 02-05-2026

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:

02-05-2026 00:00 - 01:00 400 MW

02-05-2026 01:00 - 02:00 400 MW

02-05-2026 02:00 - 03:00 400 MW

02-05-2026 03:00 - 04:00 400 MW

02-05-2026 04:00 - 05:00 400 MW

02-05-2026 05:00 - 06:00 400 MW

02-05-2026 06:00 - 07:00 400 MW

02-05-2026 07:00 - 08:00 400 MW

02-05-2026 08:00 - 09:00 400 MW

02-05-2026 09:00 - 10:00 400 MW

02-05-2026 10:00 - 11:00 400 MW

02-05-2026 11:00 - 12:00 400 MW

02-05-2026 12:00 - 13:00 400 MW

02-05-2026 13:00 - 14:00 400 MW

02-05-2026 14:00 - 15:00 400 MW

02-05-2026 15:00 - 16:00 400 MW

02-05-2026 16:00 - 17:00 400 MW

02-05-2026 17:00 - 18:00 400 MW

02-05-2026 18:00 - 19:00 400 MW

02-05-2026 19:00 - 20:00 400 MW

02-05-2026 20:00 - 21:00 400 MW

02-05-2026 21:00 - 22:00 400 MW

02-05-2026 22:00 - 23:00 400 MW

02-05-2026 23:00 - 24:00 400 MW

5. Amount of LTTR remaining after curtailment:

02-05-2026 00:00 - 01:00 0 MW

02-05-2026 01:00 - 02:00 0 MW

02-05-2026 02:00 - 03:00 0 MW

02-05-2026 03:00 - 04:00 0 MW

02-05-2026 04:00 - 05:00 0 MW

02-05-2026 05:00 - 06:00 0 MW

02-05-2026 06:00 - 07:00 0 MW

02-05-2026 07:00 - 08:00 0 MW

02-05-2026 08:00 - 09:00 0 MW

02-05-2026 09:00 - 10:00 0 MW

02-05-2026 10:00 - 11:00 0 MW

02-05-2026 11:00 - 12:00 0 MW

02-05-2026 12:00 - 13:00 0 MW

02-05-2026 13:00 - 14:00 0 MW

02-05-2026 14:00 - 15:00 0 MW

02-05-2026 15:00 - 16:00 0 MW

02-05-2026 16:00 - 17:00 0 MW

02-05-2026 17:00 - 18:00 0 MW

02-05-2026 18:00 - 19:00 0 MW

02-05-2026 19:00 - 20:00 0 MW

02-05-2026 20:00 - 21:00 0 MW

02-05-2026 21:00 - 22:00 0 MW

02-05-2026 22:00 - 23:00 0 MW

02-05-2026 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*:

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 IFA1 IFA2 and Viking Link.
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 CH-IT border for delivery period 01-05-2026

by JAO

1. TSO(s)*:

SWISSGRID

2. Identification of affected Long Term Transmission Rights:

CH-IT

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:

01-05-2026 08:00 - 09:00 282 MW

01-05-2026 09:00 - 10:00 282 MW

01-05-2026 10:00 - 11:00 282 MW

01-05-2026 11:00 - 12:00 282 MW

01-05-2026 12:00 - 13:00 282 MW

01-05-2026 13:00 - 14:00 282 MW

01-05-2026 14:00 - 15:00 282 MW

01-05-2026 15:00 - 16:00 282 MW

01-05-2026 16:00 - 17:00 282 MW

01-05-2026 17:00 - 18:00 282 MW

5. Amount of LTTR remaining after curtailment:

01-05-2026 08:00 - 09:00 137 MW

01-05-2026 09:00 - 10:00 0 MW

01-05-2026 10:00 - 11:00 0 MW

01-05-2026 11:00 - 12:00 0 MW

01-05-2026 12:00 - 13:00 0 MW

01-05-2026 13:00 - 14:00 0 MW

01-05-2026 14:00 - 15:00 0 MW

01-05-2026 15:00 - 16:00 0 MW

01-05-2026 16:00 - 17:00 0 MW

01-05-2026 17:00 - 18:00 141 MW

Capacity Curtailment on the SI-AT border for delivery period 01-05-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

SI-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

01-05-2026 10:00 - 11:00 370 MW

01-05-2026 11:00 - 12:00 370 MW

01-05-2026 12:00 - 13:00 370 MW

01-05-2026 13:00 - 14:00 370 MW

01-05-2026 14:00 - 15:00 370 MW

01-05-2026 15:00 - 16:00 370 MW

01-05-2026 16:00 - 17:00 370 MW

5. Amount of LTTR remaining after curtailment:

01-05-2026 10:00 - 11:00 193 MW

01-05-2026 11:00 - 12:00 182 MW

01-05-2026 12:00 - 13:00 180 MW

01-05-2026 13:00 - 14:00 187 MW

01-05-2026 14:00 - 15:00 196 MW

01-05-2026 15:00 - 16:00 238 MW

01-05-2026 16:00 - 17:00 237 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.

Capacity Curtailment on the HU-AT border for delivery period 01-05-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

HU-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

01-05-2026 11:00 - 12:00 48 MW

01-05-2026 12:00 - 13:00 48 MW

01-05-2026 13:00 - 14:00 48 MW

5. Amount of LTTR remaining after curtailment:

01-05-2026 11:00 - 12:00 34 MW

01-05-2026 12:00 - 13:00 34 MW

01-05-2026 13:00 - 14:00 34 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.

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!