Notifications

Off-take and supply balance for the trading day (14.02.2026 - 16.02.2026) was published on the ISZO portal.

Registration of daily diagrams for the trading day 14.02.2026 - 16.02.2026 was closed.

The Market Coupling process is delayed due to technical reasons or market issues.

Therefore, the publication of the final Market Coupling Results is delayed.

The results of matching on the day-ahead market for the next business day were published.

Please be aware that the publication of the SDAC Market Coupling Results is delayed until further notice.
The Market Coupling Results will be published as soon as they are available.
If needed, another delay message will be sent out.

Was performed Deadline for orders for next business day.

The technical issue is solved. The CEPS-SEPS Interconnector is/will be (re)opened at 13.02.2026 11:45 CET.

No capacity can be allocated anymore for the CEPS-SEPS Interconnector due to technical issues until further notice.
Another message will be sent as soon as the Interconnector will be re-opened.

Preliminary daily evaluation of imbalance and RE for the time (12.02.2026 - 12.02.2026) was published on the ISZO portal.

Please be aware, a configuration change will take place on XBID System on 13.02.2026 from 09:00 CET until 09:45 CET. It is expected there will be no impact on XBID or its services during this time.
To allow market participants to mitigate their risk appropriately, we would like to inform you beforehand that should unforeseen technical issues arise in the process, the market will be halted.

The maintenance has finished. The SEPS (SEPS-CEPS, SEPS-MAVIR, SEPS-PLC) Interconnector is/will be (re)opened at 12.02.2026 21:00 CET.

Off-take and supply balance for the trading day (13.02.2026 - 13.02.2026) was published on the ISZO portal.

The SEPS (SEPS-CEPS, SEPS-MAVIR, SEPS-PLC) Interconnector WILL BE CLOSED on 12.02.2026 16:15 CET due to system maintenance until 12.02.2026 21:00 CET. No capacity allocation will be possible.
Another message will be sent before re-opening.

Registration of daily diagrams for the trading day 13.02.2026 - 13.02.2026 was closed.

Dear Market Participants,
please let us inform you about the possibility to participate in the Daylight-Saving Time change testing – DST.

The testing will be launched in the TEST environment (https://test-isot.okte.sk/) on
23 February – 26 February 2026, while during the testing the system date will be set to the period 26 March – 29 March 2026 (DST change simulation).

In case you are interested in participating in the testing, please send an email with the subject “IDM DST Testing” including the following information:
• If you have already participated in any previous testing, it is sufficient to provide only your username.
• If you are participating in the testing for the first time, it is necessary to send the Request for testing in the ISOT system and a valid certificate.

If case of any questions, please contact market@okte.sk

Best Regards

OKTE, a.s.

The results of matching on the day-ahead market for the next business day were published.

Was performed Deadline for orders for next business day.

Monthly evaluation of imbalance and RE for the time (01.01.2026 - 31.01.2026) was published on the ISZO portal.

Preliminary daily evaluation of imbalance and RE for the time (11.02.2026 - 11.02.2026) was published on the ISZO portal.

Please be aware, a configuration change will take place on XBID System on 13.02.2026 from 09:00 CET until 09:45 CET. It is expected there will be no impact on XBID or its services during this time.
To allow market participants to mitigate their risk appropriately, we would like to inform you beforehand that should unforeseen technical issues arise in the process, the market will be halted.

The SEPS (SEPS-CEPS, SEPS-MAVIR, SEPS-PLC) Interconnector WILL BE CLOSED on 12.02.2026 16:15 CET due to system maintenance until 12.02.2026 21:00 CET. No capacity allocation will be possible.
Another message will be sent before re-opening.

Off-take and supply balance for the trading day (12.02.2026 - 12.02.2026) was published on the ISZO portal.

Registration of daily diagrams for the trading day 12.02.2026 - 12.02.2026 was closed.

The results of matching on the day-ahead market for the next business day were published.

Was performed Deadline for orders for next business day.

Preliminary daily evaluation of imbalance and RE for the time (10.02.2026 - 10.02.2026) was published on the ISZO portal.

Off-take and supply balance for the trading day (11.02.2026 - 11.02.2026) was published on the ISZO portal.

Registration of daily diagrams for the trading day 11.02.2026 - 11.02.2026 was closed.

The results of matching on the day-ahead market for the next business day were published.

Was performed Deadline for orders for next business day.

Preliminary daily evaluation of imbalance and RE for the time (09.02.2026 - 09.02.2026) was published on the ISZO portal.

The CEPS-50H CEPS-APG CEPS-PSEPLC CEPS-TTG CEPS-SEPS Interconnector WILL BE CLOSED on 17.02.2026 17:55 CET due to system maintenance until 17.02.2026 21:30 CET. No capacity allocation will be possible.
Another message will be sent before re-opening.

Off-take and supply balance for the trading day (10.02.2026 - 10.02.2026) was published on the ISZO portal.

Registration of daily diagrams for the trading day 10.02.2026 - 10.02.2026 was closed.

The results of matching on the day-ahead market for the next business day were published.

Was performed Deadline for orders for next business day.

Please be aware, a configuration change will take place on XBID System on 09.02.2026 from 11:00 CET until 11:15 CET.
It is expected there will be an impact on XBID or its services during this time.
During configuration it will not be possible to place orders in 15 min resolution from 11:00 to 11:05, while in the relevant time window all orders will be deactivated in 15 min resolution and it will not be possible to place orders in 60 min resolution from 11:07 to 11:15, while in relevant time window all orders will be deactivated in 60 min resolution.
To allow market participants to mitigate their risk appropriately, we would like to inform you beforehand that should unforeseen technical issues arise in the process, the market will be halted.

Preliminary daily evaluation of imbalance and RE for the time (08.02.2026 - 08.02.2026) was published on the ISZO portal.

Off-take and supply balance for the trading day (09.02.2026 - 09.02.2026) was published on the ISZO portal.

Registration of daily diagrams for the trading day 09.02.2026 - 09.02.2026 was closed.

The results of matching on the day-ahead market for the next business day were published.

Was performed Deadline for orders for next business day.

Preliminary daily evaluation of imbalance and RE for the time (07.02.2026 - 07.02.2026) was published on the ISZO portal.

Off-take and supply balance for the trading day (08.02.2026 - 09.02.2026) was published on the ISZO portal.

Registration of daily diagrams for the trading day 08.02.2026 - 09.02.2026 was closed.

The results of matching on the day-ahead market for the next business day were published.

Was performed Deadline for orders for next business day.

Preliminary daily evaluation of imbalance and RE for the time (06.02.2026 - 06.02.2026) was published on the ISZO portal.

The SEPS (SEPS-CEPS, SEPS-MAVIR, SEPS-PLC Interconnector WILL BE CLOSED on 12.02.2026 16:15 CET due to system maintenance until 12.02.2026 21:00 CET. No capacity allocation will be possible.
Another message will be sent before re-opening.

Off-take and supply balance for the trading day (07.02.2026 - 09.02.2026) was published on the ISZO portal.