Termination of SANDBOX-15min test environment on 27th of September2024

Temporary Unavailability of the Sandbox Testing Environment

Only commercial certificates will be supported by web services under TLS.

S/MIME Certificate renewal and web services security certificate renewal for test environment

CS OTE irregular shutdown on April 1st, 2026

Information Webinar - Testing the transition to a 15-minute settlement period

As a reminder, only commercial certificates will be supported under TLS for web services.

Temporary Unavailability of Sandbox Test Environments

Final Version XML Message Formats, XSD Templates

The extraordinary shutdown CS OTE Sandbox1 on March 27, 2026

Update of the Documents Related to the Implementation of 15-min. Imbalance Settlement and Trading Periods

XML message formats, XSD templates for suggestions

XML Message Formats, XSD Templates for suggestions

Temporary unavailability of OTE on 14 November 2023

Current version of the manual of message formats XML, XSD and WSDL templates for electricity valid from 07 June 2022

Thawte SSL/TLS certificate renewal information