14.05.2024 17:00:00

Signature component OTE PKI update for access to the OTE System

Dear Market Participants,

We request all users of the OTE system who utilize the OTE PKI signature component for interfacing with the system, if they have not done so already, to update to the latest version (2.6) in both the production and test environments of CS OTE by no later than June 12, 2024.

Failure to update by the aforementioned date may result in data submitted to the OTE system not being properly stored or processed!

We also recommend always maintaining the most current version of the signature component. The new version is fully compatible with both the existing and upcoming versions of the OTE system, which will be launched in conjunction with the implementation of a 15-minute billing period in June 2024.

Should you have any questions, technical inquiries, or issues, please contact us at the following email address:


The manual for verifying the version and reinstalling the signature component is available here (czech only).
A video tutorial for installing the signature component is available here.
The current version of the signature component for download is here.