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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 HU-AT border for delivery period 12-07-2026

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:

12-07-2026 09:00 - 10:00 260 MW

12-07-2026 10:00 - 11:00 260 MW

12-07-2026 11:00 - 12:00 260 MW

12-07-2026 12:00 - 13:00 260 MW

12-07-2026 13:00 - 14:00 260 MW

5. Amount of LTTR remaining after curtailment:

12-07-2026 09:00 - 10:00 225 MW

12-07-2026 10:00 - 11:00 225 MW

12-07-2026 11:00 - 12:00 224 MW

12-07-2026 12:00 - 13:00 214 MW

12-07-2026 13:00 - 14:00 217 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 12-07-2026

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:

12-07-2026 09:00 - 10:00 3819 MW

12-07-2026 10:00 - 11:00 3819 MW

12-07-2026 11:00 - 12:00 3819 MW

12-07-2026 12:00 - 13:00 3819 MW

12-07-2026 13:00 - 14:00 3819 MW

5. Amount of LTTR remaining after curtailment:

12-07-2026 09:00 - 10:00 2614 MW

12-07-2026 10:00 - 11:00 2857 MW

12-07-2026 11:00 - 12:00 2922 MW

12-07-2026 12:00 - 13:00 2900 MW

12-07-2026 13:00 - 14:00 2813 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 12-07-2026

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:

12-07-2026 09:00 - 10:00 350 MW

12-07-2026 10:00 - 11:00 350 MW

12-07-2026 11:00 - 12:00 350 MW

12-07-2026 12:00 - 13:00 350 MW

12-07-2026 13:00 - 14:00 350 MW

5. Amount of LTTR remaining after curtailment:

12-07-2026 09:00 - 10:00 155 MW

12-07-2026 10:00 - 11:00 154 MW

12-07-2026 11:00 - 12:00 174 MW

12-07-2026 12:00 - 13:00 171 MW

12-07-2026 13:00 - 14:00 173 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 12-07-2026

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:

12-07-2026 09:00 - 10:00 310 MW

12-07-2026 10:00 - 11:00 310 MW

12-07-2026 11:00 - 12:00 310 MW

12-07-2026 12:00 - 13:00 310 MW

12-07-2026 13:00 - 14:00 310 MW

5. Amount of LTTR remaining after curtailment:

12-07-2026 09:00 - 10:00 151 MW

12-07-2026 10:00 - 11:00 166 MW

12-07-2026 11:00 - 12:00 186 MW

12-07-2026 12:00 - 13:00 171 MW

12-07-2026 13:00 - 14:00 186 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.

FR–IT: Updated Public Consultation on the Proposed Implementation of Preliminary Yearly Auctions for LTTRs

by JAO

With reference to the previous message regarding the FR–IT: Public Consultation on the Proposed Implementation of Preliminary Yearly Auctions for LTTRs, please note that, upon TSO request, an updated version of the FR–IT Public Consultation document has been provided.

Please disregard the previously attached document and refer only to the updated version attached to this message.

Public Consultation on the Proposed Implementation of Preliminary Yearly Auctions for LTTRs on the CH–IT Borders

by JAO

On behalf of Terna and Swissgrid, JAO would like to inform market participants that a public consultation has been launched regarding the proposed implementation of preliminary yearly auctions for Long-Term Transmission Rights (LTTRs) on the CH–IT borders.

The purpose of this consultation is to gather feedback from market participants on the proposed auction design and implementation approach for preliminary yearly auctions allocating a share of the yearly LTTRs for Business Years 2027 and 2028.

Market participants are invited to review the attached consultation documents and submit their comments by 10 August 2026, following the procedures and contact details provided in the respective documents.

The consultation documents include detailed information on the proposed auction products, offered capacities, implementation timeline and consultation process for each border.

Attachments:

CH-IT Public Consultation Message

 

2026 Auction Calendar update

by JAO

We would like to inform you that, as per TSOs request, the 2026 Auction Calendar has been updated on the corridors IFA1 and IFA2.

For more details please refer to the Auction Calendar on our webpage http://www.jao.eu/auctions#/calendar/table to find its latest version.

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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