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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
OPS
  • 500+
    Registered market participants
  • 26k+
    Auctions held annually
  • 100%
    Auction tool availability
  • 80+
    Employees
  • 50
    TSOs serviced

Latest market messages

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Capacity Curtailment on the ME-IT border for delivery period 26-04-2026

by JAO

1. TSO(s)*:

CGES & TERNA

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:

26-04-2026 00:00 - 01:00 400 MW

26-04-2026 01:00 - 02:00 400 MW

26-04-2026 02:00 - 03:00 400 MW

26-04-2026 03:00 - 04:00 400 MW

26-04-2026 04:00 - 05:00 400 MW

26-04-2026 05:00 - 06:00 400 MW

26-04-2026 06:00 - 07:00 400 MW

26-04-2026 07:00 - 08:00 400 MW

26-04-2026 08:00 - 09:00 400 MW

26-04-2026 09:00 - 10:00 400 MW

26-04-2026 10:00 - 11:00 400 MW

26-04-2026 11:00 - 12:00 400 MW

26-04-2026 12:00 - 13:00 400 MW

26-04-2026 13:00 - 14:00 400 MW

26-04-2026 14:00 - 15:00 400 MW

26-04-2026 15:00 - 16:00 400 MW

26-04-2026 16:00 - 17:00 400 MW

26-04-2026 17:00 - 18:00 400 MW

5. Amount of LTTR remaining after curtailment:

26-04-2026 00:00 - 01:00 0 MW

26-04-2026 01:00 - 02:00 0 MW

26-04-2026 02:00 - 03:00 0 MW

26-04-2026 03:00 - 04:00 0 MW

26-04-2026 04:00 - 05:00 0 MW

26-04-2026 05:00 - 06:00 0 MW

26-04-2026 06:00 - 07:00 0 MW

26-04-2026 07:00 - 08:00 0 MW

26-04-2026 08:00 - 09:00 0 MW

26-04-2026 09:00 - 10:00 0 MW

26-04-2026 10:00 - 11:00 0 MW

26-04-2026 11:00 - 12:00 0 MW

26-04-2026 12:00 - 13:00 0 MW

26-04-2026 13:00 - 14:00 0 MW

26-04-2026 14:00 - 15:00 0 MW

26-04-2026 15:00 - 16:00 0 MW

26-04-2026 16:00 - 17:00 0 MW

26-04-2026 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

Capacity Curtailment on the CH-IT border for delivery period 25-04-2026

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:

25-04-2026 09:00 - 10:00 282 MW

25-04-2026 10:00 - 11:00 282 MW

25-04-2026 11:00 - 12:00 282 MW

25-04-2026 12:00 - 13:00 282 MW

25-04-2026 13:00 - 14:00 282 MW

25-04-2026 14:00 - 15:00 282 MW

25-04-2026 15:00 - 16:00 282 MW

25-04-2026 16:00 - 17:00 282 MW

5. Amount of LTTR remaining after curtailment:

25-04-2026 09:00 - 10:00 0 MW

25-04-2026 10:00 - 11:00 0 MW

25-04-2026 11:00 - 12:00 0 MW

25-04-2026 12:00 - 13:00 0 MW

25-04-2026 13:00 - 14:00 0 MW

25-04-2026 14:00 - 15:00 0 MW

25-04-2026 15:00 - 16:00 0 MW

25-04-2026 16:00 - 17:00 0 MW

Delay in Publication of Pre-Final Computation in Core Publication Tool for Business Date 25.04.2026

by JAO

Please note that there will be a delay in the Publication of Pre-Final Computation in Core Publication Tool for Business Date 25.04.2026.

Capacity Curtailment on the SI-IT border for delivery period 25-04-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

SI-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

25-04-2026 09:00 - 10:00 59 MW

25-04-2026 10:00 - 11:00 59 MW

25-04-2026 11:00 - 12:00 59 MW

25-04-2026 12:00 - 13:00 59 MW

25-04-2026 13:00 - 14:00 59 MW

25-04-2026 14:00 - 15:00 59 MW

25-04-2026 15:00 - 16:00 59 MW

25-04-2026 16:00 - 17:00 59 MW

5. Amount of LTTR remaining after curtailment:

25-04-2026 09:00 - 10:00 3 MW

25-04-2026 10:00 - 11:00 3 MW

25-04-2026 11:00 - 12:00 3 MW

25-04-2026 12:00 - 13:00 3 MW

25-04-2026 13:00 - 14:00 3 MW

25-04-2026 14:00 - 15:00 3 MW

25-04-2026 15:00 - 16:00 3 MW

25-04-2026 16:00 - 17:00 3 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

Capacity Curtailment on the FR-IT border for delivery period 25-04-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

FR-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

25-04-2026 08:00 - 09:00 448 MW

25-04-2026 09:00 - 10:00 448 MW

25-04-2026 10:00 - 11:00 448 MW

25-04-2026 11:00 - 12:00 448 MW

25-04-2026 12:00 - 13:00 448 MW

25-04-2026 13:00 - 14:00 448 MW

25-04-2026 14:00 - 15:00 448 MW

25-04-2026 15:00 - 16:00 448 MW

25-04-2026 16:00 - 17:00 448 MW

25-04-2026 17:00 - 18:00 448 MW

5. Amount of LTTR remaining after curtailment:

25-04-2026 08:00 - 09:00 414 MW

25-04-2026 09:00 - 10:00 21 MW

25-04-2026 10:00 - 11:00 21 MW

25-04-2026 11:00 - 12:00 21 MW

25-04-2026 12:00 - 13:00 21 MW

25-04-2026 13:00 - 14:00 21 MW

25-04-2026 14:00 - 15:00 21 MW

25-04-2026 15:00 - 16:00 21 MW

25-04-2026 16:00 - 17:00 21 MW

25-04-2026 17:00 - 18:00 414 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

Capacity Curtailment on the ME-IT border for delivery period 25-04-2026

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:

25-04-2026 00:00 - 01:00 400 MW

25-04-2026 01:00 - 02:00 400 MW

25-04-2026 02:00 - 03:00 400 MW

25-04-2026 03:00 - 04:00 400 MW

25-04-2026 04:00 - 05:00 400 MW

25-04-2026 05:00 - 06:00 400 MW

25-04-2026 06:00 - 07:00 400 MW

25-04-2026 07:00 - 08:00 400 MW

25-04-2026 08:00 - 09:00 400 MW

25-04-2026 09:00 - 10:00 400 MW

25-04-2026 10:00 - 11:00 400 MW

25-04-2026 11:00 - 12:00 400 MW

25-04-2026 12:00 - 13:00 400 MW

25-04-2026 13:00 - 14:00 400 MW

25-04-2026 14:00 - 15:00 400 MW

25-04-2026 15:00 - 16:00 400 MW

25-04-2026 16:00 - 17:00 400 MW

25-04-2026 17:00 - 18:00 400 MW

25-04-2026 18:00 - 19:00 400 MW

25-04-2026 19:00 - 20:00 400 MW

25-04-2026 20:00 - 21:00 400 MW

25-04-2026 21:00 - 22:00 400 MW

25-04-2026 22:00 - 23:00 400 MW

25-04-2026 23:00 - 24:00 400 MW

5. Amount of LTTR remaining after curtailment:

25-04-2026 00:00 - 01:00 0 MW

25-04-2026 01:00 - 02:00 0 MW

25-04-2026 02:00 - 03:00 0 MW

25-04-2026 03:00 - 04:00 0 MW

25-04-2026 04:00 - 05:00 0 MW

25-04-2026 05:00 - 06:00 0 MW

25-04-2026 06:00 - 07:00 0 MW

25-04-2026 07:00 - 08:00 0 MW

25-04-2026 08:00 - 09:00 0 MW

25-04-2026 09:00 - 10:00 0 MW

25-04-2026 10:00 - 11:00 0 MW

25-04-2026 11:00 - 12:00 0 MW

25-04-2026 12:00 - 13:00 0 MW

25-04-2026 13:00 - 14:00 0 MW

25-04-2026 14:00 - 15:00 0 MW

25-04-2026 15:00 - 16:00 0 MW

25-04-2026 16:00 - 17:00 0 MW

25-04-2026 17:00 - 18:00 0 MW

25-04-2026 18:00 - 19:00 0 MW

25-04-2026 19:00 - 20:00 0 MW

25-04-2026 20:00 - 21:00 0 MW

25-04-2026 21:00 - 22:00 0 MW

25-04-2026 22:00 - 23:00 0 MW

25-04-2026 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

Urgent Market Update: Delay of MK-RS-D-DAILYPRODU-260424-01 & RS-MK-D-DAILYPRODU-260424-01 for Market Period 24/04/2026

by JAO

Please note that the MK<>RS Daily Auctions for market period 24/04/2026 with the auction IDs MK-RS-D-DAILYPRODU-260424-01 & RS-MK-D-DAILYPRODU-260424-01 have been delayed. Bid submission gate opens at 09:13

Resource Center

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

Go to resources

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

Register your company

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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Frequently asked questions

Check out the common questions and our answers on how to use the auction platform.

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If you can't find an answer to your question, our team is here to help!

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