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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.

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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

Publication Tool data for Core ID CCR //run Business Day 15/04/2026

by JAO

Please be informed that due to Core CC Tool inaccessibility, the ID3E//run process for BD 15/04/202 has failed and data will not be available in PuTo Core ID CCR Parallel run.

Public consultation opening – Italy North CCR – Proposal for the Amendment of the Regional Design of LTTRs

by JAO

On behalf of the relevant TSOs (APG, ELES, RTE, Terna), JAO informs stakeholders that the following public consultation was launched today via the ENTSO-E consultation hub: “Italy North CCR – Proposal for the Amendment of the Regional Design of Long-Term Transmission Rights in accordance with Article 31 of the Commission Regulation (EU) 2016/1719 of 26 September 2016 establishing a Guideline on Forward Capacity Allocation”.

Key elements of the proposal under consultation are:

·     FTRs – options to become the sole LTTR product for all Italy North CCR borders, replacing PTRs with UIOSI approach.

·     Possibility for the Italy North TSOs to offer yearly LTTRs up to two years ahead, in addition to the existing yearly and monthly products.

·     New regional design to be applied from delivery year 2027 onwards.

All interested parties are invited to submit their feedback by 15 May 2026, following the instructions set out in the above-mentioned section of the ENTSO‑E website.

Publication Tool Data - IDA1, BD 16/04/2026

by JAO

Please be informed that due to IDA1 cancellation, no data will be available in Publication Tool for business day 16/04/2026.

UPDATE - Capacity Curtailment on the BG-GR border for delivery period 17-04-2026

by JAO

1. TSO(s)*:

HTSO-TSO

2. Identification of affected Long Term Transmission Rights:

BG-GR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

17-04-2026 00:00 - 01:00 800 MW

17-04-2026 01:00 - 02:00 800 MW

17-04-2026 02:00 - 03:00 800 MW

17-04-2026 03:00 - 04:00 800 MW

17-04-2026 04:00 - 05:00 800 MW

17-04-2026 05:00 - 06:00 800 MW

17-04-2026 06:00 - 07:00 800 MW

17-04-2026 07:00 - 08:00 800 MW

17-04-2026 08:00 - 09:00 800 MW

17-04-2026 09:00 - 10:00 800 MW

17-04-2026 10:00 - 11:00 800 MW

17-04-2026 11:00 - 12:00 800 MW

17-04-2026 12:00 - 13:00 800 MW

17-04-2026 13:00 - 14:00 800 MW

17-04-2026 14:00 - 15:00 800 MW

17-04-2026 15:00 - 16:00 800 MW

17-04-2026 16:00 - 17:00 800 MW

17-04-2026 17:00 - 18:00 800 MW

17-04-2026 18:00 - 19:00 800 MW

17-04-2026 19:00 - 20:00 800 MW

17-04-2026 20:00 - 21:00 800 MW

17-04-2026 21:00 - 22:00 800 MW

17-04-2026 22:00 - 23:00 800 MW

17-04-2026 23:00 - 24:00 800 MW

5. Amount of LTTR remaining after curtailment:

17-04-2026 00:00 - 01:00 800 MW

17-04-2026 01:00 - 02:00 800 MW

17-04-2026 02:00 - 03:00 800 MW

17-04-2026 03:00 - 04:00 800 MW

17-04-2026 04:00 - 05:00 800 MW

17-04-2026 05:00 - 06:00 800 MW

17-04-2026 06:00 - 07:00 800 MW

17-04-2026 07:00 - 08:00 800 MW

17-04-2026 08:00 - 09:00 800 MW

17-04-2026 09:00 - 10:00 800 MW

17-04-2026 10:00 - 11:00 800 MW

17-04-2026 11:00 - 12:00 800 MW

17-04-2026 12:00 - 13:00 800 MW

17-04-2026 13:00 - 14:00 800 MW

17-04-2026 14:00 - 15:00 800 MW

17-04-2026 15:00 - 16:00 800 MW

17-04-2026 16:00 - 17:00 800 MW

17-04-2026 17:00 - 18:00 800 MW

17-04-2026 18:00 - 19:00 800 MW

17-04-2026 19:00 - 20:00 800 MW

17-04-2026 20:00 - 21:00 800 MW

17-04-2026 21:00 - 22:00 800 MW

17-04-2026 22:00 - 23:00 800 MW

17-04-2026 23:00 - 24:00 800 MW

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

Operational security reasons

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 BG-GR border for delivery period 17-04-2026

by JAO

1. TSO(s)*:

HTSO-TSO

2. Identification of affected Long Term Transmission Rights:

BG-GR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

17-04-2026 05:00 - 06:00 800 MW

17-04-2026 06:00 - 07:00 800 MW

17-04-2026 07:00 - 08:00 800 MW

17-04-2026 08:00 - 09:00 800 MW

17-04-2026 09:00 - 10:00 800 MW

17-04-2026 10:00 - 11:00 800 MW

17-04-2026 11:00 - 12:00 800 MW

17-04-2026 12:00 - 13:00 800 MW

17-04-2026 13:00 - 14:00 800 MW

17-04-2026 14:00 - 15:00 800 MW

17-04-2026 15:00 - 16:00 800 MW

5. Amount of LTTR remaining after curtailment:

17-04-2026 05:00 - 06:00 483 MW

17-04-2026 06:00 - 07:00 483 MW

17-04-2026 07:00 - 08:00 483 MW

17-04-2026 08:00 - 09:00 483 MW

17-04-2026 09:00 - 10:00 483 MW

17-04-2026 10:00 - 11:00 483 MW

17-04-2026 11:00 - 12:00 483 MW

17-04-2026 12:00 - 13:00 483 MW

17-04-2026 13:00 - 14:00 483 MW

17-04-2026 14:00 - 15:00 483 MW

17-04-2026 15:00 - 16:00 483 MW

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

Operational security reasons

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 ME-IT border for delivery period 17-04-2026

by JAO

1. TSO(s)*:

TERNA & 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:

17-04-2026 09:00 - 10:00 400 MW

17-04-2026 10:00 - 11:00 400 MW

17-04-2026 11:00 - 12:00 400 MW

17-04-2026 12:00 - 13:00 400 MW

17-04-2026 13:00 - 14:00 400 MW

17-04-2026 14:00 - 15:00 400 MW

17-04-2026 15:00 - 16:00 400 MW

5. Amount of LTTR remaining after curtailment:

17-04-2026 09:00 - 10:00 0 MW

17-04-2026 10:00 - 11:00 0 MW

17-04-2026 11:00 - 12:00 0 MW

17-04-2026 12:00 - 13:00 0 MW

17-04-2026 13:00 - 14:00 0 MW

17-04-2026 14:00 - 15:00 0 MW

17-04-2026 15:00 - 16:00 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

Capacity Curtailment on the BG-GR border for delivery period 16-04-2026

by JAO

1. TSO(s)*:

IPTO (ADMIE)  &  ESO

2. Identification of affected Long Term Transmission Rights:

BG-GR

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

16-04-2026 05:00 - 06:00 800 MW

16-04-2026 06:00 - 07:00 800 MW

16-04-2026 07:00 - 08:00 800 MW

16-04-2026 08:00 - 09:00 800 MW

16-04-2026 09:00 - 10:00 800 MW

16-04-2026 10:00 - 11:00 800 MW

16-04-2026 11:00 - 12:00 800 MW

16-04-2026 12:00 - 13:00 800 MW

16-04-2026 13:00 - 14:00 800 MW

16-04-2026 14:00 - 15:00 800 MW

16-04-2026 15:00 - 16:00 800 MW

16-04-2026 16:00 - 17:00 800 MW

5. Amount of LTTR remaining after curtailment:

16-04-2026 05:00 - 06:00 483 MW

16-04-2026 06:00 - 07:00 483 MW

16-04-2026 07:00 - 08:00 483 MW

16-04-2026 08:00 - 09:00 483 MW

16-04-2026 09:00 - 10:00 483 MW

16-04-2026 10:00 - 11:00 483 MW

16-04-2026 11:00 - 12:00 483 MW

16-04-2026 12:00 - 13:00 483 MW

16-04-2026 13:00 - 14:00 483 MW

16-04-2026 14:00 - 15:00 483 MW

16-04-2026 15:00 - 16:00 483 MW

16-04-2026 16:00 - 17:00 483 MW

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

For operational security reasons

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.

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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