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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 DK-NL border for delivery period 14-04-2026

by JAO

1. TSO(s)*:

TenneT_NL

2. Identification of affected Long Term Transmission Rights:

DK-NL

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

14-04-2026 09:00 - 10:00 199 MW

14-04-2026 10:00 - 11:00 199 MW

14-04-2026 11:00 - 12:00 199 MW

14-04-2026 12:00 - 13:00 199 MW

14-04-2026 13:00 - 14:00 199 MW

14-04-2026 14:00 - 15:00 199 MW

14-04-2026 15:00 - 16:00 199 MW

14-04-2026 16:00 - 17:00 199 MW

14-04-2026 17:00 - 18:00 199 MW

5. Amount of LTTR remaining after curtailment:

14-04-2026 09:00 - 10:00 0 MW

14-04-2026 10:00 - 11:00 0 MW

14-04-2026 11:00 - 12:00 0 MW

14-04-2026 12:00 - 13:00 0 MW

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

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

14-04-2026 15:00 - 16:00 0 MW

14-04-2026 16:00 - 17:00 0 MW

14-04-2026 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 *:

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) *?

The remedial actions considered were assessed as not sufficient or ineffective to avoid the expected violation of operational security limit(s).

Capacity Curtailment on the EE-LV border for delivery period 13-04-2026

by JAO

1. TSO(s)*:

AST

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:

13-04-2026 01:00 - 02:00 450 MW

13-04-2026 02:00 - 03:00 450 MW

13-04-2026 03:00 - 04:00 450 MW

13-04-2026 05:00 - 06:00 450 MW

13-04-2026 06:00 - 07:00 450 MW

13-04-2026 07:00 - 08:00 450 MW

13-04-2026 08:00 - 09:00 450 MW

13-04-2026 09:00 - 10:00 450 MW

13-04-2026 10:00 - 11:00 450 MW

13-04-2026 11:00 - 12:00 450 MW

13-04-2026 12:00 - 13:00 450 MW

13-04-2026 13:00 - 14:00 450 MW

13-04-2026 14:00 - 15:00 450 MW

13-04-2026 15:00 - 16:00 450 MW

13-04-2026 16:00 - 17:00 450 MW

13-04-2026 17:00 - 18:00 450 MW

13-04-2026 18:00 - 19:00 450 MW

13-04-2026 19:00 - 20:00 450 MW

13-04-2026 20:00 - 21:00 450 MW

13-04-2026 21:00 - 22:00 450 MW

13-04-2026 22:00 - 23:00 450 MW

13-04-2026 23:00 - 24:00 450 MW

5. Amount of LTTR remaining after curtailment:

13-04-2026 01:00 - 02:00 413 MW

13-04-2026 02:00 - 03:00 413 MW

13-04-2026 03:00 - 04:00 413 MW

13-04-2026 05:00 - 06:00 413 MW

13-04-2026 06:00 - 07:00 413 MW

13-04-2026 07:00 - 08:00 413 MW

13-04-2026 08:00 - 09:00 394 MW

13-04-2026 09:00 - 10:00 394 MW

13-04-2026 10:00 - 11:00 394 MW

13-04-2026 11:00 - 12:00 380 MW

13-04-2026 12:00 - 13:00 394 MW

13-04-2026 13:00 - 14:00 394 MW

13-04-2026 14:00 - 15:00 394 MW

13-04-2026 15:00 - 16:00 413 MW

13-04-2026 16:00 - 17:00 412 MW

13-04-2026 17:00 - 18:00 413 MW

13-04-2026 18:00 - 19:00 413 MW

13-04-2026 19:00 - 20:00 413 MW

13-04-2026 20:00 - 21:00 413 MW

13-04-2026 21:00 - 22:00 413 MW

13-04-2026 22:00 - 23:00 413 MW

13-04-2026 23:00 - 24:00 413 MW

6. Information on exact operational security limit(s) that are expected to be violated in the absence of curtailment*:

Nord Pool - UMM Platform, as well as the capacity already allocated on the Baltic Balancing Market for balancing capacity sharing athttps://baltic.transparency-dashboard.eu/node/108

7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s)*?

There is no alternative to the curtailment of the affected LTTRs.

Capacity Curtailment on the AT-CZ border for delivery period 13-04-2026

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:

13-04-2026 08:00 - 09:00 350 MW

13-04-2026 09:00 - 10:00 350 MW

13-04-2026 10:00 - 11:00 350 MW

13-04-2026 11:00 - 12:00 350 MW

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

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

13-04-2026 14:00 - 15:00 350 MW

13-04-2026 15:00 - 16:00 350 MW

13-04-2026 16:00 - 17:00 350 MW

13-04-2026 17:00 - 18:00 350 MW

5. Amount of LTTR remaining after curtailment:

13-04-2026 08:00 - 09:00 37 MW

13-04-2026 09:00 - 10:00 37 MW

13-04-2026 10:00 - 11:00 37 MW

13-04-2026 11:00 - 12:00 37 MW

13-04-2026 12:00 - 13:00 37 MW

13-04-2026 13:00 - 14:00 37 MW

13-04-2026 14:00 - 15:00 37 MW

13-04-2026 15:00 - 16:00 37 MW

13-04-2026 16:00 - 17:00 37 MW

13-04-2026 17:00 - 18:00 37 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 13-04-2026

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:

13-04-2026 08:00 - 09:00 295 MW

13-04-2026 09:00 - 10:00 295 MW

13-04-2026 10:00 - 11:00 295 MW

13-04-2026 11:00 - 12:00 295 MW

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

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

13-04-2026 14:00 - 15:00 295 MW

13-04-2026 15:00 - 16:00 295 MW

13-04-2026 16:00 - 17:00 295 MW

13-04-2026 17:00 - 18:00 295 MW

5. Amount of LTTR remaining after curtailment:

13-04-2026 08:00 - 09:00 34 MW

13-04-2026 09:00 - 10:00 34 MW

13-04-2026 10:00 - 11:00 34 MW

13-04-2026 11:00 - 12:00 34 MW

13-04-2026 12:00 - 13:00 34 MW

13-04-2026 13:00 - 14:00 34 MW

13-04-2026 14:00 - 15:00 34 MW

13-04-2026 15:00 - 16:00 34 MW

13-04-2026 16:00 - 17:00 34 MW

13-04-2026 17:00 - 18:00 34 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 13-04-2026

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:

13-04-2026 08:00 - 09:00 370 MW

13-04-2026 09:00 - 10:00 370 MW

13-04-2026 10:00 - 11:00 370 MW

13-04-2026 11:00 - 12:00 370 MW

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

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

13-04-2026 14:00 - 15:00 370 MW

13-04-2026 15:00 - 16:00 370 MW

13-04-2026 16:00 - 17:00 370 MW

13-04-2026 17:00 - 18:00 370 MW

5. Amount of LTTR remaining after curtailment:

13-04-2026 08:00 - 09:00 36 MW

13-04-2026 09:00 - 10:00 36 MW

13-04-2026 10:00 - 11:00 36 MW

13-04-2026 11:00 - 12:00 36 MW

13-04-2026 12:00 - 13:00 36 MW

13-04-2026 13:00 - 14:00 36 MW

13-04-2026 14:00 - 15:00 36 MW

13-04-2026 15:00 - 16:00 36 MW

13-04-2026 16:00 - 17:00 36 MW

13-04-2026 17:00 - 18:00 36 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 13-04-2026

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:

13-04-2026 08:00 - 09:00 3620 MW

13-04-2026 09:00 - 10:00 3620 MW

13-04-2026 10:00 - 11:00 3620 MW

13-04-2026 11:00 - 12:00 3620 MW

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

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

13-04-2026 14:00 - 15:00 3620 MW

13-04-2026 15:00 - 16:00 3620 MW

13-04-2026 16:00 - 17:00 3620 MW

13-04-2026 17:00 - 18:00 3620 MW

5. Amount of LTTR remaining after curtailment:

13-04-2026 08:00 - 09:00 1543 MW

13-04-2026 09:00 - 10:00 1543 MW

13-04-2026 10:00 - 11:00 1543 MW

13-04-2026 11:00 - 12:00 1543 MW

13-04-2026 12:00 - 13:00 1543 MW

13-04-2026 13:00 - 14:00 1543 MW

13-04-2026 14:00 - 15:00 1543 MW

13-04-2026 15:00 - 16:00 1543 MW

13-04-2026 16:00 - 17:00 1543 MW

13-04-2026 17:00 - 18:00 1543 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-GR border for delivery period 13-04-2026

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:

13-04-2026 00:00 - 01:00 500 MW

13-04-2026 01:00 - 02:00 500 MW

13-04-2026 02:00 - 03:00 500 MW

13-04-2026 03:00 - 04:00 500 MW

13-04-2026 04:00 - 05:00 500 MW

13-04-2026 05:00 - 06:00 500 MW

13-04-2026 06:00 - 07:00 500 MW

13-04-2026 07:00 - 08:00 500 MW

13-04-2026 08:00 - 09:00 500 MW

13-04-2026 09:00 - 10:00 500 MW

13-04-2026 10:00 - 11:00 500 MW

13-04-2026 11:00 - 12:00 500 MW

13-04-2026 12:00 - 13:00 500 MW

13-04-2026 13:00 - 14:00 500 MW

13-04-2026 14:00 - 15:00 500 MW

13-04-2026 15:00 - 16:00 500 MW

13-04-2026 16:00 - 17:00 500 MW

13-04-2026 17:00 - 18:00 500 MW

13-04-2026 18:00 - 19:00 500 MW

13-04-2026 19:00 - 20:00 500 MW

13-04-2026 20:00 - 21:00 500 MW

13-04-2026 21:00 - 22:00 500 MW

13-04-2026 22:00 - 23:00 500 MW

13-04-2026 23:00 - 24:00 500 MW

5. Amount of LTTR remaining after curtailment:

13-04-2026 00:00 - 01:00 243 MW

13-04-2026 01:00 - 02:00 243 MW

13-04-2026 02:00 - 03:00 243 MW

13-04-2026 03:00 - 04:00 243 MW

13-04-2026 04:00 - 05:00 243 MW

13-04-2026 05:00 - 06:00 243 MW

13-04-2026 06:00 - 07:00 243 MW

13-04-2026 07:00 - 08:00 243 MW

13-04-2026 08:00 - 09:00 243 MW

13-04-2026 09:00 - 10:00 0 MW

13-04-2026 10:00 - 11:00 0 MW

13-04-2026 11:00 - 12:00 0 MW

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

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

13-04-2026 14:00 - 15:00 0 MW

13-04-2026 15:00 - 16:00 0 MW

13-04-2026 16:00 - 17:00 243 MW

13-04-2026 17:00 - 18:00 243 MW

13-04-2026 18:00 - 19:00 243 MW

13-04-2026 19:00 - 20:00 243 MW

13-04-2026 20:00 - 21:00 243 MW

13-04-2026 21:00 - 22:00 243 MW

13-04-2026 22:00 - 23:00 243 MW

13-04-2026 23:00 - 24:00 243 MW

6. Information on exact operational security limit(s) that are expected to be violated in the absence of curtailment*:

HVDC cable ARACTHOS – GALATINA


7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s)*?

Not Applicable

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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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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