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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.

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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 IT-ME border for delivery period 16-02-2026

by JAO

1. TSO(s)*:

Terna

2. Identification of affected Long Term Transmission Rights:

IT-ME

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

16-02-2026 07:00 - 08:00 400 MW

16-02-2026 08:00 - 09:00 400 MW

16-02-2026 09:00 - 10:00 400 MW

16-02-2026 10:00 - 11:00 400 MW

16-02-2026 11:00 - 12:00 400 MW

16-02-2026 12:00 - 13:00 400 MW

16-02-2026 13:00 - 14:00 400 MW

16-02-2026 14:00 - 15:00 400 MW

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

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

5. Amount of LTTR remaining after curtailment:

16-02-2026 07:00 - 08:00 0 MW

16-02-2026 08:00 - 09:00 0 MW

16-02-2026 09:00 - 10:00 0 MW

16-02-2026 10:00 - 11:00 0 MW

16-02-2026 11:00 - 12:00 0 MW

16-02-2026 12:00 - 13:00 0 MW

16-02-2026 13:00 - 14:00 0 MW

16-02-2026 14:00 - 15:00 0 MW

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

16-02-2026 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 *:

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 ME-IT border for delivery period 16-02-2026

by JAO

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:

16-02-2026 07:00 - 08:00 399 MW

16-02-2026 08:00 - 09:00 399 MW

16-02-2026 09:00 - 10:00 399 MW

16-02-2026 10:00 - 11:00 399 MW

16-02-2026 11:00 - 12:00 399 MW

16-02-2026 12:00 - 13:00 399 MW

16-02-2026 13:00 - 14:00 399 MW

16-02-2026 14:00 - 15:00 399 MW

16-02-2026 15:00 - 16:00 399 MW

16-02-2026 16:00 - 17:00 399 MW

5. Amount of LTTR remaining after curtailment:

16-02-2026 07:00 - 08:00 0 MW

16-02-2026 08:00 - 09:00 0 MW

16-02-2026 09:00 - 10:00 0 MW

16-02-2026 10:00 - 11:00 0 MW

16-02-2026 11:00 - 12:00 0 MW

16-02-2026 12:00 - 13:00 0 MW

16-02-2026 13:00 - 14:00 0 MW

16-02-2026 14:00 - 15:00 0 MW

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

16-02-2026 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 *:

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 AT-CZ border for delivery period 15-02-2026

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:

15-02-2026 00:00 - 01:00 349 MW

15-02-2026 01:00 - 02:00 349 MW

15-02-2026 02:00 - 03:00 349 MW

15-02-2026 03:00 - 04:00 349 MW

15-02-2026 04:00 - 05:00 349 MW

15-02-2026 05:00 - 06:00 349 MW

15-02-2026 06:00 - 07:00 349 MW

15-02-2026 07:00 - 08:00 349 MW

15-02-2026 08:00 - 09:00 349 MW

15-02-2026 09:00 - 10:00 349 MW

5. Amount of LTTR remaining after curtailment:

15-02-2026 00:00 - 01:00 212 MW

15-02-2026 01:00 - 02:00 221 MW

15-02-2026 02:00 - 03:00 204 MW

15-02-2026 03:00 - 04:00 225 MW

15-02-2026 04:00 - 05:00 225 MW

15-02-2026 05:00 - 06:00 207 MW

15-02-2026 06:00 - 07:00 204 MW

15-02-2026 07:00 - 08:00 168 MW

15-02-2026 08:00 - 09:00 116 MW

15-02-2026 09:00 - 10:00 155 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 SI-AT border for delivery period 15-02-2026

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:

15-02-2026 00:00 - 01:00 600 MW

15-02-2026 01:00 - 02:00 600 MW

15-02-2026 02:00 - 03:00 600 MW

15-02-2026 03:00 - 04:00 600 MW

15-02-2026 04:00 - 05:00 600 MW

15-02-2026 05:00 - 06:00 600 MW

15-02-2026 06:00 - 07:00 600 MW

15-02-2026 07:00 - 08:00 600 MW

15-02-2026 08:00 - 09:00 600 MW

15-02-2026 09:00 - 10:00 600 MW

5. Amount of LTTR remaining after curtailment:

15-02-2026 00:00 - 01:00 187 MW

15-02-2026 01:00 - 02:00 178 MW

15-02-2026 02:00 - 03:00 170 MW

15-02-2026 03:00 - 04:00 152 MW

15-02-2026 04:00 - 05:00 153 MW

15-02-2026 05:00 - 06:00 173 MW

15-02-2026 06:00 - 07:00 193 MW

15-02-2026 07:00 - 08:00 150 MW

15-02-2026 08:00 - 09:00 156 MW

15-02-2026 09:00 - 10:00 208 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 15-02-2026

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:

15-02-2026 00:00 - 01:00 339 MW

15-02-2026 01:00 - 02:00 339 MW

15-02-2026 02:00 - 03:00 339 MW

15-02-2026 03:00 - 04:00 339 MW

15-02-2026 04:00 - 05:00 339 MW

15-02-2026 05:00 - 06:00 339 MW

15-02-2026 06:00 - 07:00 339 MW

15-02-2026 07:00 - 08:00 339 MW

15-02-2026 08:00 - 09:00 339 MW

15-02-2026 09:00 - 10:00 339 MW

5. Amount of LTTR remaining after curtailment:

15-02-2026 00:00 - 01:00 201 MW

15-02-2026 01:00 - 02:00 197 MW

15-02-2026 02:00 - 03:00 177 MW

15-02-2026 03:00 - 04:00 164 MW

15-02-2026 04:00 - 05:00 164 MW

15-02-2026 05:00 - 06:00 177 MW

15-02-2026 06:00 - 07:00 215 MW

15-02-2026 07:00 - 08:00 161 MW

15-02-2026 08:00 - 09:00 165 MW

15-02-2026 09:00 - 10:00 227 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 15-02-2026

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:

15-02-2026 00:00 - 01:00 4420 MW

15-02-2026 01:00 - 02:00 4420 MW

15-02-2026 02:00 - 03:00 4420 MW

15-02-2026 03:00 - 04:00 4420 MW

15-02-2026 04:00 - 05:00 4420 MW

15-02-2026 05:00 - 06:00 4420 MW

15-02-2026 06:00 - 07:00 4420 MW

15-02-2026 07:00 - 08:00 4420 MW

15-02-2026 08:00 - 09:00 4420 MW

15-02-2026 09:00 - 10:00 4420 MW

5. Amount of LTTR remaining after curtailment:

15-02-2026 00:00 - 01:00 2403 MW

15-02-2026 01:00 - 02:00 2492 MW

15-02-2026 02:00 - 03:00 2258 MW

15-02-2026 03:00 - 04:00 2870 MW

15-02-2026 04:00 - 05:00 2663 MW

15-02-2026 05:00 - 06:00 2331 MW

15-02-2026 06:00 - 07:00 2275 MW

15-02-2026 07:00 - 08:00 1867 MW

15-02-2026 08:00 - 09:00 1364 MW

15-02-2026 09:00 - 10:00 1673 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 GR-IT border for delivery period 15-02-2026

by JAO

1. TSO(s)*:

TERNA, ADMIE

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:

15-02-2026 09:00 - 10:00 500 MW

15-02-2026 10:00 - 11:00 500 MW

15-02-2026 11:00 - 12:00 500 MW

15-02-2026 12:00 - 13:00 500 MW

15-02-2026 13:00 - 14:00 500 MW

15-02-2026 14:00 - 15:00 500 MW

15-02-2026 15:00 - 16:00 500 MW

5. Amount of LTTR remaining after curtailment:

15-02-2026 09:00 - 10:00 0 MW

15-02-2026 10:00 - 11:00 0 MW

15-02-2026 11:00 - 12:00 0 MW

15-02-2026 12:00 - 13:00 0 MW

15-02-2026 13:00 - 14:00 0 MW

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

15-02-2026 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*:
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

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. 

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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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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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