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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 SI-AT border for delivery period 05-10-2026

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:

05-10-2026 08:00 - 09:00 400 MW

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

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

05-10-2026 11:00 - 12:00 400 MW

05-10-2026 12:00 - 13:00 400 MW

05-10-2026 13:00 - 14:00 400 MW

05-10-2026 14:00 - 15:00 400 MW

05-10-2026 15:00 - 16:00 400 MW

5. Amount of LTTR remaining after curtailment:

05-10-2026 08:00 - 09:00 201 MW

05-10-2026 09:00 - 10:00 206 MW

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

05-10-2026 11:00 - 12:00 193 MW

05-10-2026 12:00 - 13:00 193 MW

05-10-2026 13:00 - 14:00 206 MW

05-10-2026 14:00 - 15:00 206 MW

05-10-2026 15:00 - 16:00 215 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 05-10-2026

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:

05-10-2026 08:00 - 09:00 320 MW

05-10-2026 09:00 - 10:00 320 MW

05-10-2026 10:00 - 11:00 320 MW

05-10-2026 11:00 - 12:00 320 MW

05-10-2026 12:00 - 13:00 320 MW

05-10-2026 13:00 - 14:00 320 MW

05-10-2026 14:00 - 15:00 320 MW

05-10-2026 15:00 - 16:00 320 MW

5. Amount of LTTR remaining after curtailment:

05-10-2026 08:00 - 09:00 228 MW

05-10-2026 09:00 - 10:00 232 MW

05-10-2026 10:00 - 11:00 232 MW

05-10-2026 11:00 - 12:00 253 MW

05-10-2026 12:00 - 13:00 250 MW

05-10-2026 13:00 - 14:00 250 MW

05-10-2026 14:00 - 15:00 232 MW

05-10-2026 15:00 - 16:00 232 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 05-10-2026

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:

05-10-2026 08:00 - 09:00 350 MW

05-10-2026 09:00 - 10:00 350 MW

05-10-2026 10:00 - 11:00 350 MW

05-10-2026 11:00 - 12:00 350 MW

05-10-2026 12:00 - 13:00 350 MW

05-10-2026 13:00 - 14:00 350 MW

05-10-2026 14:00 - 15:00 350 MW

05-10-2026 15:00 - 16:00 350 MW

5. Amount of LTTR remaining after curtailment:

05-10-2026 08:00 - 09:00 115 MW

05-10-2026 09:00 - 10:00 81 MW

05-10-2026 10:00 - 11:00 81 MW

05-10-2026 11:00 - 12:00 81 MW

05-10-2026 12:00 - 13:00 109 MW

05-10-2026 13:00 - 14:00 113 MW

05-10-2026 14:00 - 15:00 116 MW

05-10-2026 15:00 - 16:00 88 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 05-10-2026

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:

05-10-2026 08:00 - 09:00 4419 MW

05-10-2026 09:00 - 10:00 4419 MW

05-10-2026 10:00 - 11:00 4419 MW

05-10-2026 11:00 - 12:00 4419 MW

05-10-2026 12:00 - 13:00 4419 MW

05-10-2026 13:00 - 14:00 4419 MW

05-10-2026 14:00 - 15:00 4419 MW

05-10-2026 15:00 - 16:00 4419 MW

5. Amount of LTTR remaining after curtailment:

05-10-2026 08:00 - 09:00 1446 MW

05-10-2026 09:00 - 10:00 1045 MW

05-10-2026 10:00 - 11:00 1050 MW

05-10-2026 11:00 - 12:00 1056 MW

05-10-2026 12:00 - 13:00 1347 MW

05-10-2026 13:00 - 14:00 1633 MW

05-10-2026 14:00 - 15:00 1789 MW

05-10-2026 15:00 - 16:00 1106 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 IT-CH border for delivery period 05-10-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-CH

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

05-10-2026 16:00 - 17:00 925 MW

05-10-2026 17:00 - 18:00 925 MW

05-10-2026 18:00 - 19:00 925 MW

05-10-2026 19:00 - 20:00 925 MW

05-10-2026 20:00 - 21:00 925 MW

05-10-2026 21:00 - 22:00 925 MW

05-10-2026 22:00 - 23:00 925 MW

5. Amount of LTTR remaining after curtailment:

05-10-2026 16:00 - 17:00 590 MW

05-10-2026 17:00 - 18:00 0 MW

05-10-2026 18:00 - 19:00 0 MW

05-10-2026 19:00 - 20:00 0 MW

05-10-2026 20:00 - 21:00 0 MW

05-10-2026 21:00 - 22:00 0 MW

05-10-2026 22:00 - 23:00 590 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 IT-SI border for delivery period 05-10-2026

by JAO

1. TSO(s)*:

TERNA

2. Identification of affected Long Term Transmission Rights:

IT-SI

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

05-10-2026 16:00 - 17:00 334 MW

05-10-2026 17:00 - 18:00 334 MW

05-10-2026 18:00 - 19:00 334 MW

05-10-2026 19:00 - 20:00 334 MW

05-10-2026 20:00 - 21:00 334 MW

05-10-2026 21:00 - 22:00 334 MW

05-10-2026 22:00 - 23:00 334 MW

5. Amount of LTTR remaining after curtailment:

05-10-2026 16:00 - 17:00 223 MW

05-10-2026 17:00 - 18:00 0 MW

05-10-2026 18:00 - 19:00 0 MW

05-10-2026 19:00 - 20:00 0 MW

05-10-2026 20:00 - 21:00 0 MW

05-10-2026 21:00 - 22:00 0 MW

05-10-2026 22:00 - 23:00 223 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 IT-GR border for delivery period 05-10-2026

by JAO

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:

05-10-2026 17:00 - 18:00 500 MW

05-10-2026 18:00 - 19:00 500 MW

05-10-2026 19:00 - 20:00 500 MW

05-10-2026 20:00 - 21:00 500 MW

05-10-2026 21:00 - 22:00 500 MW

5. Amount of LTTR remaining after curtailment:

05-10-2026 17:00 - 18:00 0 MW

05-10-2026 18:00 - 19:00 0 MW

05-10-2026 19:00 - 20:00 0 MW

05-10-2026 20:00 - 21:00 0 MW

05-10-2026 21:00 - 22:00 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

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.

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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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