Gemini e-learning

Discover how to use every aspect of Gemini – and get the best from the system.

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    Learn how to use Gemini 

    We have a range of online training materials for customers to explore. They help you learn how to use – and get the most from – Gemini and Gemini Exit.  

     

    Get to grips with the Gemini user interface. 

    Gemini user interface familiarisation training

     

    Discover the different types of Gemini invoicing and file formats. 

    Gemini invoicing documents

     

    Understand the different reasons Nominations can become locked. 

    Nomination lock guide – shippers

     

    Understand the EU Nomination process. 

    EU Nomination guide – Shippers

     

    Learn how to use Gemini Exit confidently and efficiently. 

    Gemini Exit (NTS external) user guidelines – all chapters

    Gemini Exit (NTS external) user guidelines – individual chapters:

    1. Reports
    2. Introduction to processes
    3. Set up user preferences
    4. Capturing your requests
    5. Transfers and assignments
    6. OCS/OPS process
    7. Constraints

     

    Test your Gemini API set-up 

    Many of our customers use application programming interfaces (APIs) within Gemini. These are useful mechanisms for sending and retrieving large sets of data. 

    Prior to any live set-up, you may wish to test your processes.  

    Risk-free testing 

    To help you do that, we offer a secure, offline testing environment. It’s a mirror-image of the live Gemini API landscape and allows for true-to-life testing.  

    If you’d like to use the Gemini test environment, but aren’t registered, ask your Local Security Officer (LSO) to contact our Service Desk. 

    Email: servicedesk@xoserve.com 

    Call: 0845 600 0506 

    What information will the Service Desk need? 

    Our team will need to know: 

    • your Shipper organisation name and short code 
    • your start date and end date for access 
    • whether access is required to test APIs, online screens or both 
    • details of live Gemini User IDs to copy in the testing environment 

    For API testing, please give details of which APIs or API controllers will be tested. 

    For accessing and testing of screens, please confirm: 

    • which screens will be accessed 
    • whether data will be entered – and which fields will be used 
    • details of the test cases to be executed 

     

     

    Common queries

    To remove this lock, please call National Grid on 0370 191 0636. If you need further support, please call our Service Desk on 0845 600 0506. In both cases, you’ll be required to provide your Service ID, your User ID and the Gas Day.

    Your User ID could have been locked for one of the following reasons:

    • For GB Nominations, if two or more different User IDs try to update the same set of records (e.g. a combination of Service ID and activity number for that Gas Day), an error message will be displayed indicating that the records have been locked by another user.
      GB Nomination locks are auto-released after 60 minutes of the locks being applied. The user will get the same error message on the screen. Wait for 60 minutes for the locks to be auto-released.

    • For EU Nominations, if the same connection point and shipper combination are being used by two or more different users to update the EU Nomination for a Gas Day, the data will be locked.

    • The same restriction will occur if you select 'All' as the connection point and nominate using multiple User IDs. However, in this instance, all the connection points will be locked.


    Whenever you exit from the Update Nomination Screen, it's essential to click on the Cancel/Save button and exit. If you click on the red X in the top right- hand corner, the data will remain locked by that User ID.

    However, if the screen is left open, the lock will be in place for as long as the screen is open.

    First check that the system is not within the Gemini maintenance window.

    Maintenance windows

    Monday to Saturday 3:15am–4:15am

    Sunday 3am–5am

    If you’re trying to access the Gemini System outside of the Gemini maintenance window and are unsuccessful, you’ll need to raise a technical support request.

    If the Demand Attribution figure looks incorrect, you’ll need to call our Service Desk on 0845 600 0506.

    For any issues relating to Demand Attribution, you can raise a technical support request.

    You can request measurement data using the MEI file type. When the Gemini system has received the file, it will get processed and a response will be sent back via an MEO file type.

    The file formats are available via the UK Link System.

    (Then folder 01. SharePoint Archive/Gemini folder/Gemini File Formats folder/Energy Balancing Bulk Uploads and Downloads folder/choose 'Bulk Download of Pre-Closeout Measurement' document)

    *Access to secure links are only available to gas shippers and transporters. To gain access find out about accessing secure documents.

    There are 22 meter types in Gemini:

    Meter Type

    Meter Type Description

    DI

    Daily Metered Aggregate Interrupt

    NA

    Non-Daily Metered Aggregate

    NB

    National Balancing Performance Testing

    NL

    National Transmission System Linepack Off-take (OF)

    OF

    Offtake

    OS

    Onshore Field

    SC

    Local Distribution Zone Stock Change

    SE

    Entry Meter – Storage

    SH

    Shrinkage Account Meter

    SR

    Reject Gas/Flash

    ST

    Sub Terminal

    SX

    Exit Meter – Storage

    XF

    Exit Firm – Storage

    XI

    Exit Interrupt – Storage

    US

    Unique Site

    IB

    Information Provisioning Input Balancing Meter

    OB

    Information Provisioning Output Balancing Meter

    DF

    Daily Metered Aggregate Firm

    DC

    Daily Metered Consumer

    UG

    Unidentified Gas

    BL

    Boil Off

    BN

    National Transmission System Boil Off

    Access secure links

    Some e-learning materials are secure and only available to Shippers and Transporters. 

    Get access