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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

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 21-03-2026

Published: 19/03/2026 | 17:11 by JAO
Capacity Curtailment on the GR-IT border for delivery period 21-03-2026

Published: 19/03/2026 | 16:40 by JAO
UPDATE - Cancellation of Capacity Curtailment on the ME-IT border for delivery period 20-03-2026

Published: 19/03/2026 | 16:04 by JAO
Capacity Curtailment on the EE-LV border for delivery period 18-03-2026

Published: 19/03/2026 | 16:04 by JAO
Capacity Curtailment on the IT-GR border for delivery period 19-03-2026

Published: 19/03/2026 | 16:04 by JAO
Delay In Publication for Core CCR Publication Tool for Business Date 18/03/2026

Published: 19/03/2026 | 16:04 by JAO
test

Published: 19/03/2026 | 16:04 by JAO

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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:

21-03-2026 09:00 - 10:00 400 MW

21-03-2026 10:00 - 11:00 400 MW

21-03-2026 11:00 - 12:00 400 MW

21-03-2026 12:00 - 13:00 400 MW

21-03-2026 13:00 - 14:00 400 MW

21-03-2026 14:00 - 15:00 400 MW

21-03-2026 15:00 - 16:00 400 MW

5. Amount of LTTR remaining after curtailment:

21-03-2026 09:00 - 10:00 0 MW

21-03-2026 10:00 - 11:00 0 MW

21-03-2026 11:00 - 12:00 0 MW

21-03-2026 12:00 - 13:00 0 MW

21-03-2026 13:00 - 14:00 0 MW

21-03-2026 14:00 - 15:00 0 MW

21-03-2026 15:00 - 16:00 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

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

GR-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

21-03-2026 09:00 - 10:00 500 MW

21-03-2026 10:00 - 11:00 500 MW

21-03-2026 11:00 - 12:00 500 MW

21-03-2026 12:00 - 13:00 500 MW

21-03-2026 13:00 - 14:00 500 MW

21-03-2026 14:00 - 15:00 500 MW

21-03-2026 15:00 - 16:00 500 MW

5. Amount of LTTR remaining after curtailment:

21-03-2026 09:00 - 10:00 0 MW

21-03-2026 10:00 - 11:00 0 MW

21-03-2026 11:00 - 12:00 0 MW

21-03-2026 12:00 - 13:00 0 MW

21-03-2026 13:00 - 14:00 0 MW

21-03-2026 14:00 - 15:00 0 MW

21-03-2026 15:00 - 16:00 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)*:

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:

20-03-2026 00:00 - 01:00 139 MW

20-03-2026 01:00 - 02:00 139 MW

20-03-2026 02:00 - 03:00 139 MW

20-03-2026 03:00 - 04:00 139 MW

20-03-2026 04:00 - 05:00 139 MW

20-03-2026 05:00 - 06:00 139 MW

20-03-2026 06:00 - 07:00 139 MW

20-03-2026 07:00 - 08:00 139 MW

20-03-2026 08:00 - 09:00 139 MW

20-03-2026 09:00 - 10:00 139 MW

20-03-2026 10:00 - 11:00 139 MW

20-03-2026 11:00 - 12:00 139 MW

20-03-2026 12:00 - 13:00 139 MW

20-03-2026 13:00 - 14:00 139 MW

20-03-2026 14:00 - 15:00 139 MW

20-03-2026 15:00 - 16:00 139 MW

20-03-2026 16:00 - 17:00 139 MW

20-03-2026 17:00 - 18:00 139 MW

20-03-2026 18:00 - 19:00 139 MW

20-03-2026 19:00 - 20:00 139 MW

20-03-2026 20:00 - 21:00 139 MW

20-03-2026 21:00 - 22:00 139 MW

20-03-2026 22:00 - 23:00 139 MW

20-03-2026 23:00 - 24:00 139 MW

5. Amount of LTTR remaining after curtailment:

20-03-2026 00:00 - 01:00 139 MW

20-03-2026 01:00 - 02:00 139 MW

20-03-2026 02:00 - 03:00 139 MW

20-03-2026 03:00 - 04:00 139 MW

20-03-2026 04:00 - 05:00 139 MW

20-03-2026 05:00 - 06:00 139 MW

20-03-2026 06:00 - 07:00 139 MW

20-03-2026 07:00 - 08:00 139 MW

20-03-2026 08:00 - 09:00 139 MW

20-03-2026 09:00 - 10:00 139 MW

20-03-2026 10:00 - 11:00 139 MW

20-03-2026 11:00 - 12:00 139 MW

20-03-2026 12:00 - 13:00 139 MW

20-03-2026 13:00 - 14:00 139 MW

20-03-2026 14:00 - 15:00 139 MW

20-03-2026 15:00 - 16:00 139 MW

20-03-2026 16:00 - 17:00 139 MW

20-03-2026 17:00 - 18:00 139 MW

20-03-2026 18:00 - 19:00 139 MW

20-03-2026 19:00 - 20:00 139 MW

20-03-2026 20:00 - 21:00 139 MW

20-03-2026 21:00 - 22:00 139 MW

20-03-2026 22:00 - 23:00 139 MW

20-03-2026 23:00 - 24:00 139 MW

1. TSO(s)*:

ELERING

2. Identification of affected Long Term Transmission Rights:

EE-LV

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

18-03-2026 17:00 - 18:00 449 MW

18-03-2026 18:00 - 19:00 449 MW

18-03-2026 19:00 - 20:00 449 MW

18-03-2026 20:00 - 21:00 449 MW

5. Amount of LTTR remaining after curtailment:

18-03-2026 17:00 - 18:00 418 MW

18-03-2026 18:00 - 19:00 420 MW

18-03-2026 19:00 - 20:00 420 MW

18-03-2026 20:00 - 21:00 420 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)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-GR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

19-03-2026 08:00 - 09:00 499 MW

19-03-2026 09:00 - 10:00 499 MW

19-03-2026 10:00 - 11:00 499 MW

19-03-2026 11:00 - 12:00 499 MW

19-03-2026 12:00 - 13:00 499 MW

19-03-2026 13:00 - 14:00 499 MW

19-03-2026 14:00 - 15:00 499 MW

19-03-2026 15:00 - 16:00 499 MW

19-03-2026 16:00 - 17:00 499 MW

5. Amount of LTTR remaining after curtailment:

19-03-2026 08:00 - 09:00 0 MW

19-03-2026 09:00 - 10:00 0 MW

19-03-2026 10:00 - 11:00 0 MW

19-03-2026 11:00 - 12:00 0 MW

19-03-2026 12:00 - 13:00 0 MW

19-03-2026 13:00 - 14:00 0 MW

19-03-2026 14:00 - 15:00 0 MW

19-03-2026 15:00 - 16:00 0 MW

19-03-2026 16:00 - 17:00 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

Please note that due to a technical issue there will be a delay in publications for Core CCR Publication Tool.

Thank you for your understanding.

Test - 03

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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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.

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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