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XRN 4550
Gemini Re-platform

Last Updated
19 Apr 2022
Release Type
Implementation Date
05 Jul 2020
Proposer National Grid Impacted DSC service area

Service Area 20

UK Link Gemini System Services

Customer Change Team Leader


The purpose of this change proposal is therefore to confirm that National Grid wishes to re-platform Gemini and to request that Xoserve produces a Business Evaluation Report (BER) containing:

- firm costs for the analysis and design phase

- high level estimated costs for build, testing and implementation by financial year

- ‘run the business’ cost estimates by financial year

- analysis and recommendation about whether Gemini would best be hosted ‘on premises’ or on a private cloud.

This change proposal also requests that Xoserve deliver the re-platform solution that is ultimately selected by National Grid.

All of the above is subject to internal financial sanctioning within National Grid.

Impacted Customer Types

  • NGT


Document title Comment Last updated CHMC outcome
Change Proposal N/A 15/01/2019 Approved
Initial Review N/A N/A N/A
High Level Solution Options N/A N/A N/A
Solution Review N/A N/A N/A
Detailed Design N/A N/A N/A
Evaluation Quotation Reports (EQR) N/A N/A N/A
Business Evaluation Reports (BER) N/A 18/04/2019 Approved
Change Completion Reports (CCR) N/A 19/04/2022 Approved


Initial Review
Solution Consultation
Awaiting Delivery
In Delivery

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