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    Phase Description

    The migration phase to G-REX platform includes the preparation of environments, user training, as well as the gradual implementation of the new system. This transition is carried out in several stages in order to minimize interruptions and to support each user in his or her familiarisation with G-REX.

    Deployment Phase Timeline

    Learn about the key milestones of the G-REX migration and the key dates for deployment. This phase aims to ensure a smooth transition to the new platform while ensuring continuity of services.

    Date     Time   Format Details
    30 July 2025 10-12 am CET Webinar Migration schedule in detail, the testing phase, the user guides and the registry
    31 July 2025 to 19 October  2025   Phase Free access to the G-REX test platform along with the provision of documentation for API access. During this phase, support related to the test platform will be limited and mainly concentrated during the Q&A sessions. However, user guides and tutorial videos will be made available to help you get familiar with the platform.
    1 August 2025 10-11:30 am CET Online Q&A Session Dedicated support for the test platform
    13 August 2025 10-11:30 am CET Online Q&A Session Dedicated support for the test platform
    11 September 2025 10-11:30 am CET Webinar Progress of the migration project, the new rules of the registry and reminders of the test phase
    12 September 2025 10-11:30 am CET Online Q&A Session Dedicated support for the test platform
    20 October 2025 4 pm CET Phase Closure of the current electricity GO registry for data migration to G-REX. No access or operations will be possible on this registry from this day onwards
    3 November 2025   Phase Opening of the registry on G-REX with migrated data from the previous registry accompanied by the release of user guides
    12 November to 19 November 2025   Phase Order book opening and auction of the French state (unchanged calendar)

     

    User guides

    Below are guides categorised to help you use G-REX effectively as soon as it goes live.

    Category Video Link Guide pdf
    API manual - Download PDF
    First time login Download video Download PDF
    Adding a power plant Download video Download PDF
    Emission Download video Download PDF
    Transfer Download video Download PDF
    Cancellation Download video Download PDF
    Creation users and role assignment Download video Download PDF

    Contact

    Registry Operations

    For any questions related to the G-REX or the migration please send contact our customer care team.

    +33 1 73 03 96 28 go-elec@powernext.com