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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

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Capacity Curtailment on the ME-IT border for delivery period 20-05-2026

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:

20-05-2026 09:00 - 10:00 400 MW

20-05-2026 10:00 - 11:00 400 MW

20-05-2026 11:00 - 12:00 400 MW

20-05-2026 12:00 - 13:00 400 MW

20-05-2026 13:00 - 14:00 400 MW

20-05-2026 14:00 - 15:00 400 MW

20-05-2026 15:00 - 16:00 400 MW

20-05-2026 16:00 - 17:00 400 MW

5. Amount of LTTR remaining after curtailment:

20-05-2026 09:00 - 10:00 0 MW

20-05-2026 10:00 - 11:00 0 MW

20-05-2026 11:00 - 12:00 0 MW

20-05-2026 12:00 - 13:00 0 MW

20-05-2026 13:00 - 14:00 0 MW

20-05-2026 14:00 - 15:00 0 MW

20-05-2026 15:00 - 16:00 0 MW

20-05-2026 16:00 - 17:00 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

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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JAO workers

Frequently asked questions

Check out the common questions and our answers on how to use the auction platform.

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