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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 24-04-2026

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:

24-04-2026 09:00 - 10:00 400 MW

24-04-2026 10:00 - 11:00 400 MW

24-04-2026 11:00 - 12:00 400 MW

24-04-2026 12:00 - 13:00 400 MW

24-04-2026 13:00 - 14:00 400 MW

24-04-2026 14:00 - 15:00 400 MW

24-04-2026 15:00 - 16:00 400 MW

24-04-2026 16:00 - 17:00 400 MW

24-04-2026 17:00 - 18:00 400 MW

5. Amount of LTTR remaining after curtailment:

24-04-2026 09:00 - 10:00 0 MW

24-04-2026 10:00 - 11:00 0 MW

24-04-2026 11:00 - 12:00 0 MW

24-04-2026 12:00 - 13:00 0 MW

24-04-2026 13:00 - 14:00 0 MW

24-04-2026 14:00 - 15:00 0 MW

24-04-2026 15:00 - 16:00 0 MW

24-04-2026 16:00 - 17:00 0 MW

24-04-2026 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

Publication Tool Data - IDA 3, Business Date 22/04/2026

by JAO

Please be informed that due to IDA 3 cancellation, no data will be available in Publication Tool for business day 22/04/2026.

Capacity Curtailment on the SI-AT border for delivery period 23-04-2026

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:

23-04-2026 11:00 - 12:00 370 MW

23-04-2026 12:00 - 13:00 370 MW

23-04-2026 13:00 - 14:00 370 MW

5. Amount of LTTR remaining after curtailment:

23-04-2026 11:00 - 12:00 124 MW

23-04-2026 12:00 - 13:00 124 MW

23-04-2026 13:00 - 14:00 125 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 23-04-2026

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:

23-04-2026 11:00 - 12:00 295 MW

23-04-2026 12:00 - 13:00 295 MW

23-04-2026 13:00 - 14:00 295 MW

5. Amount of LTTR remaining after curtailment:

23-04-2026 11:00 - 12:00 211 MW

23-04-2026 12:00 - 13:00 177 MW

23-04-2026 13:00 - 14:00 142 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 AT-CZ border for delivery period 23-04-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

AT-CZ

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

23-04-2026 11:00 - 12:00 350 MW

23-04-2026 12:00 - 13:00 350 MW

23-04-2026 13:00 - 14:00 350 MW

5. Amount of LTTR remaining after curtailment:

23-04-2026 11:00 - 12:00 208 MW

23-04-2026 12:00 - 13:00 224 MW

23-04-2026 13:00 - 14:00 252 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 AT-DE border for delivery period 23-04-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

AT-DE

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

23-04-2026 11:00 - 12:00 3620 MW

23-04-2026 12:00 - 13:00 3620 MW

23-04-2026 13:00 - 14:00 3620 MW

5. Amount of LTTR remaining after curtailment:

23-04-2026 11:00 - 12:00 2205 MW

23-04-2026 12:00 - 13:00 2368 MW

23-04-2026 13:00 - 14:00 2762 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.

Publication Tool data for Core ID CCR IDA2 Business Day 22/04

by JAO

Please be informed that due to IDA2 cancellation/decoupling for delivery date 22/04, the missing data of IDA2 publication for the business day 22/04 will not be available in Publication Tool Core ID CCR.


Jao Operations

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. 

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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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Frequently asked questions

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

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