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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 FR-ES border for delivery period 11-04-2026

by JAO

1. TSO(s)*:

RTE, REE

2. Identification of affected Long Term Transmission Rights:

FR-ES

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

11-04-2026 19:00 - 20:00 1579 MW

11-04-2026 20:00 - 21:00 1579 MW

11-04-2026 21:00 - 22:00 1579 MW

11-04-2026 22:00 - 23:00 1579 MW

11-04-2026 23:00 - 24:00 1579 MW

5. Amount of LTTR remaining after curtailment:

11-04-2026 19:00 - 20:00 961 MW

11-04-2026 20:00 - 21:00 961 MW

11-04-2026 21:00 - 22:00 961 MW

11-04-2026 22:00 - 23:00 961 MW

11-04-2026 23:00 - 24:00 961 MW

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

11/04/2026

      19:00-20:00 Network Security

      20:00-21:00 Network Security

      21:00-22:00 Network Security

      22:00-23:00 Network Security

      23:00-24:00 Network Security

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

The available remedial actions were assessed as insufficient or ineffective to avoid the violation of operational security limits

*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 DK-NL border for delivery period 11-04-2026

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:

11-04-2026 09:00 - 10:00 199 MW

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

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

11-04-2026 12:00 - 13:00 199 MW

11-04-2026 13:00 - 14:00 199 MW

11-04-2026 14:00 - 15:00 199 MW

11-04-2026 15:00 - 16:00 199 MW

11-04-2026 16:00 - 17:00 199 MW

11-04-2026 17:00 - 18:00 199 MW

5. Amount of LTTR remaining after curtailment:

11-04-2026 09:00 - 10:00 0 MW

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

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

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

11-04-2026 13:00 - 14:00 0 MW

11-04-2026 14:00 - 15:00 0 MW

11-04-2026 15:00 - 16:00 0 MW

11-04-2026 16:00 - 17:00 0 MW

11-04-2026 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 ME-IT border for delivery period 11-04-2026

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:

11-04-2026 09:00 - 10:00 400 MW

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

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

11-04-2026 12:00 - 13:00 400 MW

11-04-2026 13:00 - 14:00 400 MW

11-04-2026 14:00 - 15:00 400 MW

11-04-2026 15:00 - 16:00 400 MW

11-04-2026 16:00 - 17:00 400 MW

11-04-2026 17:00 - 18:00 400 MW

5. Amount of LTTR remaining after curtailment:

11-04-2026 09:00 - 10:00 0 MW

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

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

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

11-04-2026 13:00 - 14:00 0 MW

11-04-2026 14:00 - 15:00 0 MW

11-04-2026 15:00 - 16:00 0 MW

11-04-2026 16:00 - 17:00 0 MW

11-04-2026 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

Delay in the publication of data on CORE CCR for BD 10/04/2026

by JAO

Due to the Technical issue at data providers end, please note that there is delay in data publication CORE CCR for delivery date 10/04/2026.

Thank you for your understanding.

Best regards,

Operations Team

Capacity Curtailment on the IT-GR border for delivery period 10-04-2026

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:

10-04-2026 00:00 - 01:00 500 MW

10-04-2026 01:00 - 02:00 500 MW

10-04-2026 02:00 - 03:00 500 MW

10-04-2026 03:00 - 04:00 500 MW

10-04-2026 04:00 - 05:00 500 MW

10-04-2026 05:00 - 06:00 500 MW

10-04-2026 06:00 - 07:00 500 MW

10-04-2026 07:00 - 08:00 500 MW

10-04-2026 08:00 - 09:00 500 MW

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

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

10-04-2026 11:00 - 12:00 500 MW

10-04-2026 12:00 - 13:00 500 MW

10-04-2026 13:00 - 14:00 500 MW

10-04-2026 14:00 - 15:00 500 MW

10-04-2026 15:00 - 16:00 500 MW

10-04-2026 16:00 - 17:00 500 MW

10-04-2026 17:00 - 18:00 500 MW

10-04-2026 18:00 - 19:00 500 MW

10-04-2026 19:00 - 20:00 500 MW

10-04-2026 20:00 - 21:00 500 MW

10-04-2026 21:00 - 22:00 500 MW

10-04-2026 22:00 - 23:00 500 MW

10-04-2026 23:00 - 24:00 500 MW

5. Amount of LTTR remaining after curtailment:

10-04-2026 00:00 - 01:00 243 MW

10-04-2026 01:00 - 02:00 243 MW

10-04-2026 02:00 - 03:00 243 MW

10-04-2026 03:00 - 04:00 243 MW

10-04-2026 04:00 - 05:00 243 MW

10-04-2026 05:00 - 06:00 243 MW

10-04-2026 06:00 - 07:00 243 MW

10-04-2026 07:00 - 08:00 243 MW

10-04-2026 08:00 - 09:00 243 MW

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

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

10-04-2026 11:00 - 12:00 0 MW

10-04-2026 12:00 - 13:00 0 MW

10-04-2026 13:00 - 14:00 0 MW

10-04-2026 14:00 - 15:00 0 MW

10-04-2026 15:00 - 16:00 0 MW

10-04-2026 16:00 - 17:00 243 MW

10-04-2026 17:00 - 18:00 243 MW

10-04-2026 18:00 - 19:00 243 MW

10-04-2026 19:00 - 20:00 243 MW

10-04-2026 20:00 - 21:00 243 MW

10-04-2026 21:00 - 22:00 243 MW

10-04-2026 22:00 - 23:00 243 MW

10-04-2026 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*:

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 GR-IT border for delivery period 10-04-2026

by JAO

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:

10-04-2026 00:00 - 01:00 500 MW

10-04-2026 01:00 - 02:00 500 MW

10-04-2026 02:00 - 03:00 500 MW

10-04-2026 03:00 - 04:00 500 MW

10-04-2026 04:00 - 05:00 500 MW

10-04-2026 05:00 - 06:00 500 MW

10-04-2026 06:00 - 07:00 500 MW

10-04-2026 07:00 - 08:00 500 MW

10-04-2026 08:00 - 09:00 500 MW

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

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

10-04-2026 11:00 - 12:00 500 MW

10-04-2026 12:00 - 13:00 500 MW

10-04-2026 13:00 - 14:00 500 MW

10-04-2026 14:00 - 15:00 500 MW

10-04-2026 15:00 - 16:00 500 MW

10-04-2026 16:00 - 17:00 500 MW

10-04-2026 17:00 - 18:00 500 MW

10-04-2026 18:00 - 19:00 500 MW

10-04-2026 19:00 - 20:00 500 MW

10-04-2026 20:00 - 21:00 500 MW

10-04-2026 21:00 - 22:00 500 MW

10-04-2026 22:00 - 23:00 500 MW

10-04-2026 23:00 - 24:00 500 MW

5. Amount of LTTR remaining after curtailment:

10-04-2026 00:00 - 01:00 241 MW

10-04-2026 01:00 - 02:00 241 MW

10-04-2026 02:00 - 03:00 241 MW

10-04-2026 03:00 - 04:00 241 MW

10-04-2026 04:00 - 05:00 241 MW

10-04-2026 05:00 - 06:00 241 MW

10-04-2026 06:00 - 07:00 241 MW

10-04-2026 07:00 - 08:00 241 MW

10-04-2026 08:00 - 09:00 241 MW

10-04-2026 09:00 - 10:00 241 MW

10-04-2026 10:00 - 11:00 241 MW

10-04-2026 11:00 - 12:00 241 MW

10-04-2026 12:00 - 13:00 241 MW

10-04-2026 13:00 - 14:00 241 MW

10-04-2026 14:00 - 15:00 241 MW

10-04-2026 15:00 - 16:00 241 MW

10-04-2026 16:00 - 17:00 241 MW

10-04-2026 17:00 - 18:00 241 MW

10-04-2026 18:00 - 19:00 241 MW

10-04-2026 19:00 - 20:00 241 MW

10-04-2026 20:00 - 21:00 241 MW

10-04-2026 21:00 - 22:00 241 MW

10-04-2026 22:00 - 23:00 241 MW

10-04-2026 23:00 - 24:00 241 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 ES-FR border for delivery period 10-04-2026

by JAO

1. TSO(s)*:

RTE, REE

2. Identification of affected Long Term Transmission Rights:

ES-FR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

10-04-2026 08:00 - 09:00 1680 MW

10-04-2026 09:00 - 10:00 1680 MW

10-04-2026 10:00 - 11:00 1680 MW

10-04-2026 11:00 - 12:00 1680 MW

10-04-2026 12:00 - 13:00 1680 MW

10-04-2026 13:00 - 14:00 1680 MW

10-04-2026 14:00 - 15:00 1680 MW

10-04-2026 15:00 - 16:00 1680 MW

10-04-2026 16:00 - 17:00 1680 MW

10-04-2026 17:00 - 18:00 1680 MW

5. Amount of LTTR remaining after curtailment:

10-04-2026 08:00 - 09:00 954 MW

10-04-2026 09:00 - 10:00 954 MW

10-04-2026 10:00 - 11:00 954 MW

10-04-2026 11:00 - 12:00 954 MW

10-04-2026 12:00 - 13:00 954 MW

10-04-2026 13:00 - 14:00 954 MW

10-04-2026 14:00 - 15:00 954 MW

10-04-2026 15:00 - 16:00 954 MW

10-04-2026 16:00 - 17:00 954 MW

10-04-2026 17:00 - 18:00 954 MW

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

10/04/2026

      08:00-09:00 Dambron - Verger

      09:00-10:00 Dambron - Verger

      10:00-11:00 Dambron - Verger

      11:00-12:00 Dambron - Verger

      12:00-13:00 Dambron - Verger

      13:00-14:00 Dambron - Verger

      14:00-15:00 Dambron - Verger

      15:00-16:00 Dambron - Verger

      16:00-17:00 Dambron - Verger

      17:00-18:00 Dambron - Verger

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

The available remedial actions were assessed as insufficient or ineffective to avoid the violation of operational security limits

*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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