Allocation of Cross-Border Capacities on the SK/UA Profile to Be Extended to Additional Timeframes

Currently, cross-border capacity allocation on the SK/UA profile is carried out exclusively through daily explicit auctions organized by the Joint Allocation Office S.A. (JAO).
In the near future, coordinated allocation will be extended to another timeframe by introducing monthly auctions, which will also be organized by JAO, just like the daily auctions.

The first monthly auction will take place in December 2025, allocating capacities for January 2026.
All relevant information, including auction rules, is published on the JAO website: Update: Approved Allocation Rules for Ukrainian borders | JAO S.A. Leading service provider for TSOs.

Monthly auctions will allocate physical transmission rights. Market participants will declare their use according to the rules set out in the document “The User’s Guide to Scheduling on the Common Border between SEPS and Ukrenergo / Trader’s Manual Version 2.0”.

Change in Daily Auction Regime as of January 1, 2026

With the launch of monthly auctions, the regime for daily auctions on the SK/UA profile will change as of the trading day January 1, 2026 – daily auctions will be held on D-1 instead of the current D-2, where D is the day of delivery.

Relevant information, including auction rules, is published on the JAO website: Update: Approved Allocation Rules for Ukrainian borders | JAO S.A. Leading service provider for TSOs.

The transition to the new regime will follow this schedule:

  • 29.12.2025 – daily auction for the trading day 31.12.2025
  • 30.12.2025 – no daily auction
  • 31.12.2025 – daily auction for the trading day 1.1.2026

The timing of the daily auction within the respective day remains unchanged; however, the shift from D-2 to D-1 will apply. The time schedule and rules for nomination of daily transmission rights are provided in the document “The User’s Guide to Scheduling on the Common Border between SEPS and Ukrenergo / Trader’s Manual Version 2.0”.

Next Planned Step: Intraday Auctions

During the first quarter of 2026, the allocation of cross-border capacities on the SK/UA profile is expected to be extended to the intraday timeframe.

JAO will also act as the capacity allocator in this case.
Detailed information, including auction rules, will be published on the JAO website and on the SEPS website well in advance of the intraday auctions launch.

 

Go-Live of the Monthly Auctions for the Ukraine-Hungary, Ukraine-Slovakia and Ukraine-Romania borders

In anticipation of the upcoming go-live of the monthly auctions for the Ukrainian borders on JAO’s platform, the HAR 2024 for EU external borders has been amended with the Border Specific Annexes for the UA borders and published on JAO website.

The HAR 2026 is pending approval by the Ukrainian NRA. Once approved, the current documentation will be amended and published with the relevant notice period.

Monthly auctions for Market Period January 2026 will open on 15.12.2025.

Further information can be found on the JAO website: Update: Go-Live of the Monthly Auctions for the Ukraine-Hungary, Ukraine-Slovakia and Ukraine-Romania borders | JAO S.A. Leading service provider for TSOs

 

Public consultation on the draft of the document: Rules for intraday capacity allocation on Ukrainian borders (9.10. – 6.11.2025)

In anticipation of the upcoming go-live of the intraday auctions for the Ukraine-Hungary and Ukraine-Slovakia, on October 9th, 2025 JAO is opening the public consultation on the following document: Rules for intraday capacity allocation on Ukrainian borders.

The public consultation is available on the JAO website:

Rules for intraday capacity allocation on Ukrainian borders | JAO S.A. Leading service provider for TSOs

 

Public consultation on the draft of the documents: Border specific annexes to the HAR for the Ukrainian borders

In anticipation of the upcoming go-live of the monthly auctions for the Ukraine-Hungary, Ukraine-Slovakia and Ukraine-Romania borders, on June, 24, 2025 JAO is opening the public consultation on the following documents: Border specific annexes to the HAR for the Ukrainian borders.

The public consultation is available on the JAO website: Border specific annexes to the HAR for the Ukrainian borders | JAO S.A. Leading service provider for TSOs

 

On 3 March 2024, the last daily unilateral explicit auction organised by SEPS will take place on the SK – UA profile for the delivery day 5 March 2024. 

On 4 March 2024, the first daily bilateral explicit auction organised by the JAO Allocation Office will take place on the SK – UA profile for the delivery day 6 March 2024. 

The platform for entering nominations of participants registered on the Slovak market remains the Damas Energy system (Transmission Services module SEPS). 

The introduction of joint auctions means a step forward in the coordination of capacity allocation on the SK-UA profile, which will also simplify access to cross-border capacity for market participants. 

The allocation of cross-border transmission capacities on a monthly basis to the SK-UA profile is currently halted. In case of any change, we will inform you in good time. 

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