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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 DE-AT border for delivery period 24-11-2025

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

DE-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

24-11-2025 00:00 - 01:00 4820 MW

24-11-2025 01:00 - 02:00 4820 MW

24-11-2025 02:00 - 03:00 4820 MW

24-11-2025 03:00 - 04:00 4820 MW

24-11-2025 04:00 - 05:00 4820 MW

24-11-2025 05:00 - 06:00 4820 MW

24-11-2025 06:00 - 07:00 4820 MW

24-11-2025 07:00 - 08:00 4820 MW

24-11-2025 08:00 - 09:00 4820 MW

24-11-2025 09:00 - 10:00 4820 MW

24-11-2025 10:00 - 11:00 4820 MW

24-11-2025 11:00 - 12:00 4820 MW

24-11-2025 12:00 - 13:00 4820 MW

24-11-2025 13:00 - 14:00 4820 MW

24-11-2025 14:00 - 15:00 4820 MW

24-11-2025 15:00 - 16:00 4820 MW

24-11-2025 16:00 - 17:00 4820 MW

24-11-2025 17:00 - 18:00 4820 MW

24-11-2025 18:00 - 19:00 4820 MW

24-11-2025 19:00 - 20:00 4820 MW

24-11-2025 20:00 - 21:00 4820 MW

24-11-2025 21:00 - 22:00 4820 MW

24-11-2025 22:00 - 23:00 4820 MW

24-11-2025 23:00 - 24:00 4820 MW

5. Amount of LTTR remaining after curtailment:

24-11-2025 00:00 - 01:00 3974 MW

24-11-2025 01:00 - 02:00 3974 MW

24-11-2025 02:00 - 03:00 3974 MW

24-11-2025 03:00 - 04:00 3974 MW

24-11-2025 04:00 - 05:00 3974 MW

24-11-2025 05:00 - 06:00 3974 MW

24-11-2025 06:00 - 07:00 3974 MW

24-11-2025 07:00 - 08:00 3974 MW

24-11-2025 08:00 - 09:00 3974 MW

24-11-2025 09:00 - 10:00 3974 MW

24-11-2025 10:00 - 11:00 3974 MW

24-11-2025 11:00 - 12:00 3974 MW

24-11-2025 12:00 - 13:00 3974 MW

24-11-2025 13:00 - 14:00 3974 MW

24-11-2025 14:00 - 15:00 3974 MW

24-11-2025 15:00 - 16:00 3974 MW

24-11-2025 16:00 - 17:00 3974 MW

24-11-2025 17:00 - 18:00 3974 MW

24-11-2025 18:00 - 19:00 3974 MW

24-11-2025 19:00 - 20:00 3974 MW

24-11-2025 20:00 - 21:00 3974 MW

24-11-2025 21:00 - 22:00 3974 MW

24-11-2025 22:00 - 23:00 3974 MW

24-11-2025 23:00 - 24:00 3974 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 EE-LV border for delivery period 23-11-2025

by JAO

1. TSO(s)*:

ELERING

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:

23-11-2025 05:00 - 06:00 550 MW

23-11-2025 06:00 - 07:00 550 MW

23-11-2025 09:00 - 10:00 550 MW

23-11-2025 10:00 - 11:00 550 MW

23-11-2025 11:00 - 12:00 550 MW

23-11-2025 12:00 - 13:00 550 MW

23-11-2025 13:00 - 14:00 550 MW

5. Amount of LTTR remaining after curtailment:

23-11-2025 05:00 - 06:00 505 MW

23-11-2025 06:00 - 07:00 505 MW

23-11-2025 09:00 - 10:00 511 MW

23-11-2025 10:00 - 11:00 511 MW

23-11-2025 11:00 - 12:00 505 MW

23-11-2025 12:00 - 13:00 505 MW

23-11-2025 13:00 - 14:00 505 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 GR-IT border for delivery period 23-11-2025

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:

23-11-2025 09:00 - 10:00 50 MW

23-11-2025 10:00 - 11:00 50 MW

23-11-2025 11:00 - 12:00 50 MW

23-11-2025 12:00 - 13:00 50 MW

23-11-2025 13:00 - 14:00 50 MW

23-11-2025 14:00 - 15:00 50 MW

23-11-2025 15:00 - 16:00 50 MW

23-11-2025 16:00 - 17:00 50 MW

23-11-2025 17:00 - 18:00 50 MW

23-11-2025 18:00 - 19:00 50 MW

23-11-2025 19:00 - 20:00 50 MW

23-11-2025 20:00 - 21:00 50 MW

23-11-2025 21:00 - 22:00 50 MW

23-11-2025 22:00 - 23:00 50 MW

23-11-2025 23:00 - 24:00 50 MW

5. Amount of LTTR remaining after curtailment:

23-11-2025 09:00 - 10:00 0 MW

23-11-2025 10:00 - 11:00 0 MW

23-11-2025 11:00 - 12:00 0 MW

23-11-2025 12:00 - 13:00 0 MW

23-11-2025 13:00 - 14:00 0 MW

23-11-2025 14:00 - 15:00 0 MW

23-11-2025 15:00 - 16:00 0 MW

23-11-2025 16:00 - 17:00 0 MW

23-11-2025 17:00 - 18:00 0 MW

23-11-2025 18:00 - 19:00 0 MW

23-11-2025 19:00 - 20:00 0 MW

23-11-2025 20:00 - 21:00 0 MW

23-11-2025 21:00 - 22:00 0 MW

23-11-2025 22:00 - 23:00 0 MW

23-11-2025 23:00 - 24:00 0 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)*?

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 23-11-2025

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:

23-11-2025 09:00 - 10:00 50 MW

23-11-2025 10:00 - 11:00 50 MW

23-11-2025 11:00 - 12:00 50 MW

23-11-2025 12:00 - 13:00 50 MW

23-11-2025 13:00 - 14:00 50 MW

23-11-2025 14:00 - 15:00 50 MW

23-11-2025 15:00 - 16:00 50 MW

23-11-2025 16:00 - 17:00 50 MW

23-11-2025 17:00 - 18:00 50 MW

23-11-2025 18:00 - 19:00 50 MW

23-11-2025 19:00 - 20:00 50 MW

23-11-2025 20:00 - 21:00 50 MW

23-11-2025 21:00 - 22:00 50 MW

23-11-2025 22:00 - 23:00 50 MW

23-11-2025 23:00 - 24:00 50 MW

5. Amount of LTTR remaining after curtailment:

23-11-2025 09:00 - 10:00 0 MW

23-11-2025 10:00 - 11:00 0 MW

23-11-2025 11:00 - 12:00 0 MW

23-11-2025 12:00 - 13:00 0 MW

23-11-2025 13:00 - 14:00 0 MW

23-11-2025 14:00 - 15:00 0 MW

23-11-2025 15:00 - 16:00 0 MW

23-11-2025 16:00 - 17:00 0 MW

23-11-2025 17:00 - 18:00 0 MW

23-11-2025 18:00 - 19:00 0 MW

23-11-2025 19:00 - 20:00 0 MW

23-11-2025 20:00 - 21:00 0 MW

23-11-2025 21:00 - 22:00 0 MW

23-11-2025 22:00 - 23:00 0 MW

23-11-2025 23:00 - 24:00 0 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)*?

During the CC process, all the remedial actions provided by the TSOs are already considered by the CCC in the calculation

Details of Yearly Auctions on FR<>IT border

by JAO

Dear Market Participants,

After the success of the first auction for the 2026 yearly product that was held in September 2025, RTE and TERNA are pleased to announce that the second round for 2026 yearly auction will take place in November/December 2025. Resale will be feasible from yearly-to-yearly auctions.

Please find below the details for the yearly auctions occurring in November/December 2025 (CET timings). The Y BASE 2 product will be offered in the base-flat type, and the Y BASE 3 will be a product with reductions:

Bidding Month

Interconnector

Product

Horizon

Auction Start

Time (of the opening)

Auction End

Time (of the End)

Dispute period

December 2024

FR-IT

Y BASE 2

2026

26/11/2025

14:40

03/12/2024

14:40

2-2 days

December 2024

IT-FR

Y BASE 2

2026

26/11/2025

14:40

03/12/2024

14:40

2-2 days

December 2024

FR-IT

Y BASE 3

2026

27/11/2025

14:30

04/12/2024

14:30

2-2 days

December 2024

FR-IT

Y BASE 3

2026

27/11/2025

14:30

04/12/2024

14:30

2-2 days

Kind Regards,

JAO Operations

Attachments

Details of Yearly Auctions on FR<>CH border

by JAO

Dear Market Participants,

Following a successful auction split in 2024, Swissgrid and RTE are pleased to announce that the France-Switzerland yearly capacity for the delivery year 2026 and 2027 will be split and offered into 3 separate auctions.

For yearly product 2026, the first auction was held in December 2024, the second in September 2025 and last one will be held in December 2025.

For yearly product 2027, the first auction will be held in November 2025.

Please find the details for the December Y-2026 and Y-2027 auction below (timings in CET):

Bidding Month

Interconnector

Product

Horizon

Volume (MW)

Auction Start

Time (of the opening)

Auction End

Time (of the End)

Dispute period

November 2025

FR-> CH

Y BASE 1

2027

50

25/11/2025

14:20

2/12/2025

14:20

2-2 days

November 2025

CH-> FR

Y BASE 1

2027

50

25/11/2025

14:20

2/12/2025

14:20

2-2 days

December 2025

FR->CH

Y BASE 3

2026

160

02/12/2025

13:50

09/12/2025

13:50

2-2 days

Kind Regards,

JAO Operations

Details of Second Round for Yearly Auction on FR<>DE border

by JAO

Dear market participants,

Following a successful auction split in 2024, RTE, Amprion and Transnet BW are pleased to announce that the France-Germany yearly capacity for the delivery year 2026 will be split and offered into two separate auctions. The first one was held in June 2025 and the second one will be held in December 2025.

Please find the details for the December Y-2026 auction below (timings in CET):

Bidding Month

Interconnector

Product

Horizon

Volume (MW)

Auction Start

Time (of the opening)

Auction End

Time (of the End)

Dispute period

December 2025

DE->FR

Y BASE 2

2026

300

03/12/2025

14:30

10/12/2025

14:30

2-2 days

December 2025

FR->DE

Y BASE 2

2026

500

03/12/2025

14:30

10/12/2025

14:30

2-2 days

Kind Regards,

JAO Operations

Attachments

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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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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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