Notifications

System Date Subject Category
ISOT 12/3/2025 IDM: (SIDC_TSO_02): XBID (Re)Opening of Interconnector(s) Market participants
The technical issue is solved. The 50HzT-PSEPLC, CEPS-PSEPLC, SEPS-PSEPLC, LT-PSEPLC, PSEPLC-SE4, PLC-PSE Interconnector was reopened at 03.12.2025 at 02:30 CET.
ISOT 12/2/2025 IDM: (SIDC_TSO_04): XBID Ex post information on closing of Interconnector(s) Market participants
No capacity can be allocated anymore for the 50HzT-PSEPLC, CEPS-PSEPLC, SEPS-PSEPLC, LT-PSEPLC, PSEPLC-SE4, PLC-PSE Interconnector due to technical issues until further notice.
Another message will be sent as soon as the Interconnector will be re-opened.
ISZO 12/2/2025 Off-take and supply balance was published Others
Off-take and supply balance for the trading day (03.12.2025 - 03.12.2025) was published on the ISZO portal.
ISZO 12/2/2025 Registration closure of daily diagrams Daily diagram reception
Registration of daily diagrams for the trading day 03.12.2025 - 03.12.2025 was closed.
ISOT 12/2/2025 Matching results on the day-ahead market published
The results of matching on the day-ahead market for the next business day were published.
ISOT 12/2/2025 IDM: (SIDC_TSO_03): XBID Ex ante information on closing of Interconnector(s) Market participants
The 50HzT-PSEPLC, CEPS-PSEPLC,SEPS-PSEPLC, LT-PSEPLC, PSEPLC-SE4, PLC-PSE Interconnector WILL BE CLOSED on 03.12.2025 17:55 CET due to system maintenance until 03.12.2025 20:30 CET. No capacity allocation will be possible.
Another message will be sent before re-opening.
ISOT 12/2/2025 Deadline for orders to the Short Term Market
Was performed Deadline for orders for next business day.
ISZO 12/2/2025 Evaluation of imbalance and RE was published for 01.12.2025 - 01.12.2025 Supply/Demand balance
Preliminary daily evaluation of imbalance and RE for the time (01.12.2025 - 01.12.2025) was published on the ISZO portal.
ISOT 12/2/2025 IDM: (IDCT_NEMO_02): Cross border trading service startup Market participants
The technical issue is solved, the Cross border trading will start on 2.12.2025 2:00 CET for continuous trading. Please be awared that deactivated orders will NOT be automatically reactivated.
ISOT 12/2/2025 IDM: (IDCT_NEMO_01): Cross border trading service halt Market participants
Please be aware that the service is on hold from 2.12.2025 1:01 CET due to external technical issues. All active orders were deactivated.
Another message will be sent as soon as the Cross border trading will startup again.
ISOT 12/1/2025 IDM: (SIDC_TSO_02): XBID (Re)Opening of Interconnector(s) Market participants
The system maintenance is finished. The interconnectors of SEPS (SEPS-CEPS, SEPS-MAVIR, SEPS-PLC) are/will be (re)opened at 01.12.2025 19:10 CET.

ISOT 12/1/2025 IDM: (SIDC_TSO_04): XBID Ex post information on closing of Interconnector(s) Market participants
No capacity can be allocated anymore for the SEPS (SEPS-CEPS, SEPS-MAVIR, SEPS-PLC) Interconnector due to technical issues until further notice.
Another message will be sent as soon as the Interconnector will be re-opened.
ISZO 12/1/2025 Off-take and supply balance was published Others
Off-take and supply balance for the trading day (02.12.2025 - 02.12.2025) was published on the ISZO portal.
ISZO 12/1/2025 Registration closure of daily diagrams Daily diagram reception
Registration of daily diagrams for the trading day 02.12.2025 - 02.12.2025 was closed.
ISOT 12/1/2025 Matching results on the day-ahead market published
The results of matching on the day-ahead market for the next business day were published.
ISOT 12/1/2025 IDM: (IDCT_NEMO_08): Finish of maintenance on XBID System Market participants
Please be aware that the maintenance on XBID System is successfully finished. The Cross Border Trading is re-opened on 01.12.2025 12:50 CET for continuous trading. Please be aware that deactivated orders will NOT be automatically reactivated.
ISOT 12/1/2025 Deadline for orders to the Short Term Market
Was performed Deadline for orders for next business day.
ISOT 12/1/2025 IDM: (IDCT_NEMO_07): Maintenance on XBID System Market participants
Update:

Please be aware that a maintenance on XBID is planned from 01.12.2025 11:00 CET until 01.12.2025 13:30 CET. During this time, no Cross Border trading is possible.
Another message will be sent as soon as the maintenance is finished and Cross Border Trading will be startup again.
Please be aware that your orders will be deactivated during the maintenance.
Only local matching will be available for Slovak market area during this period.
ISZO 12/1/2025 Evaluation of imbalance and RE was published for 30.11.2025 - 30.11.2025 Supply/Demand balance
Preliminary daily evaluation of imbalance and RE for the time (30.11.2025 - 30.11.2025) was published on the ISZO portal.
ISZO 12/1/2025 Evaluation of imbalance and RE was published for 26.11.2025 - 26.11.2025 Supply/Demand balance
Preliminary daily evaluation of imbalance and RE for the time (26.11.2025 - 26.11.2025) was published on the ISZO portal.
ISOT 12/1/2025 IDM: (IDCT_NEMO_07): Maintenance on XBID System Market participants
Please be aware that a maintenance on XBID is planned from 01.12.2025 11:00 CET until 01.12.2025 12:00 CET.. During this time, no Cross Border trading is possible.
Another message will be sent as soon as the maintenance is finished and Cross Border Trading will be startup again. Please be aware that your orders will be deactivated during the maintenance.
ISZO 11/30/2025 Off-take and supply balance was published Others
Off-take and supply balance for the trading day (01.12.2025 - 01.12.2025) was published on the ISZO portal.
ISZO 11/30/2025 Registration closure of daily diagrams Daily diagram reception
Registration of daily diagrams for the trading day 01.12.2025 - 01.12.2025 was closed.
ISOT 11/30/2025 Matching results on the day-ahead market published
The results of matching on the day-ahead market for the next business day were published.
ISOT 11/30/2025 Deadline for orders to the Short Term Market
Was performed Deadline for orders for next business day.
ISZO 11/30/2025 Evaluation of imbalance and RE was published for 29.11.2025 - 29.11.2025 Supply/Demand balance
Preliminary daily evaluation of imbalance and RE for the time (29.11.2025 - 29.11.2025) was published on the ISZO portal.
ISZO 11/29/2025 Off-take and supply balance was published Others
Off-take and supply balance for the trading day (30.11.2025 - 01.12.2025) was published on the ISZO portal.
ISZO 11/29/2025 Registration closure of daily diagrams Daily diagram reception
Registration of daily diagrams for the trading day 30.11.2025 - 01.12.2025 was closed.
ISOT 11/29/2025 (IDA_JOINT_09): IDA Cancelation Market participants
Due to technical reasons or market issues, the IDA auction IDA1 DD 20251130 was cancelled.
ISOT 11/29/2025 Matching results on the day-ahead market published
The results of matching on the day-ahead market for the next business day were published.
ISOT 11/29/2025 Deadline for orders to the Short Term Market
Was performed Deadline for orders for next business day.
ISZO 11/29/2025 Evaluation of imbalance and RE was published for 28.11.2025 - 28.11.2025 Supply/Demand balance
Preliminary daily evaluation of imbalance and RE for the time (28.11.2025 - 28.11.2025) was published on the ISZO portal.
ISZO 11/28/2025 Off-take and supply balance was published Others
Off-take and supply balance for the trading day (29.11.2025 - 01.12.2025) was published on the ISZO portal.
ISZO 11/28/2025 Registration closure of daily diagrams Daily diagram reception
Registration of daily diagrams for the trading day 29.11.2025 - 01.12.2025 was closed.
ISOT 11/28/2025 Matching results on the day-ahead market published
The results of matching on the day-ahead market for the next business day were published.
ISOT 11/28/2025 Deadline for orders to the Short Term Market
Was performed Deadline for orders for next business day.
ISOT 11/28/2025 IDM: (IDCT_NEMO_08): Finish of maintenance on XBID System Market participants
Please be aware that the maintenance on XBID System is successfully finished. The Cross Border Trading is re-opened on 28.11.2025 11:45 CET for continuous trading. Please be aware that deactivated orders will NOT be automatically reactivated.
ISZO 11/28/2025 Evaluation of imbalance and RE was published for 27.11.2025 - 27.11.2025 Supply/Demand balance
Preliminary daily evaluation of imbalance and RE for the time (27.11.2025 - 27.11.2025) was published on the ISZO portal.
ISOT 11/28/2025 IDM: (IDCT_NEMO_07): Maintenance on XBID System Market participants
Please be aware that a maintenance on XBID is planned from 28.11.2025 11:00 CET do 28.11.2025 11:45 CET. During this time, no Cross Border trading is possible.
Another message will be sent as soon as the maintenance is finished and Cross Border Trading will be startup again. Please be aware that your orders will be deactivated during the maintenance.
ISOT 11/27/2025 IDM: (SIDC_TSO_02): XBID (Re)Opening of Interconnector(s) Market participants
The system maintenance is finished. The interconnectors of SEPS (SEPS-CEPS, SEPS-MAVIR, SEPS-PLC) will be (re)opened at 27.11.2025 21:30 CET.

ISOT 11/27/2025 IDM: (SIDC_TSO_01): XBID Delay in opening of Interconnector(s) Market participants
Please be aware that the opening of the SEPS(SEPS-CEPS, SPES-MAVIR, SEPS-PLC) Interconnector is delayed until further notice. The Interconnector will be opened as soon as possible.
Another message will be sent before opening.
ISOT 11/27/2025 IDM: (SIDC_TSO_03): XBID Ex ante information on closing of Interconnector(s) Market participants
The SEPS (SEPS-CEPS, SEPS-MAVIR, SEPS-PLC) Interconnector WILL BE CLOSED on 27.11.2025 18:15 CET due to system maintenance until 27.11.2025 21:00 CET. No capacity allocation will be possible.
Another message will be sent before re-opening.
ISZO 11/27/2025 Off-take and supply balance was published Others
Off-take and supply balance for the trading day (28.11.2025 - 28.11.2025) was published on the ISZO portal.
ISZO 11/27/2025 Registration closure of daily diagrams Daily diagram reception
Registration of daily diagrams for the trading day 28.11.2025 - 28.11.2025 was closed.
ISOT 11/27/2025 Matching results on the day-ahead market published
The results of matching on the day-ahead market for the next business day were published.
ISOT 11/27/2025 Deadline for orders to the Short Term Market
Was performed Deadline for orders for next business day.
ISZO 11/27/2025 Evaluation of imbalance and RE was published Supply/Demand balance
Final evaluation of imbalance and RE for the time (01.09.2025 - 30.09.2025) was published on the ISZO portal.
ISZO 11/27/2025 Evaluation of imbalance and RE was published for 26.11.2025 - 26.11.2025 Supply/Demand balance
Preliminary daily evaluation of imbalance and RE for the time (26.11.2025 - 26.11.2025) was published on the ISZO portal.
ISOT 11/27/2025 IDM: (IDCT_NEMO_07): Maintenance on XBID System Market participants
Please be aware that a maintenance on XBID is planned from 01.12.2025 11:00 CET until 01.12.2025 12:00 CET. During this time, no Cross Border trading is possible.
Another message will be sent as soon as the maintenance is finished and Cross Border Trading will be startup again. Please be aware that your orders will be deactivated during the maintenance.
Only local matching will be available for Slovak market area during this period.


ISOT 11/26/2025 (IDA_JOINT_08): Delay in IDA Results publication Market participants
Please be aware that the publication of the IDA Results for IDA 2 auction DD20251127 is delayed until further notice.
The IDA Results will be published as soon as they are available.