Switching Programme

Providing faster, more reliable switching for consumers

Ofgem launched the Switching Programme to encourage consumers to engage with the same energy market, and to improve their experience of doing so. Its aim to deliver reliable, next day switching for consumers by replacing the existing switching services with a new Centralised Switching Service (CSS).

Welcome to Xoserve’s CSS page. This is the central reference point for our customers on Xoserve’s involvement in, and perspective on, the delivery of Ofgem’s Central Switching Service.

We are committed to keeping our customers fully informed on the delivery of this programme. On a weekly basis, we’ll share our Weekly Progress Report, our Day After Reports (DARs) and our updated view on key risks:

  • Our weekly Switching Programme Status report; this is the weekly report we’re required to submit to the System Integrator, and we’re sharing here for our customers to have the same update
  • Day After Report summaries of key program meetings; these are basic notes that we capture during meetings to share with internal to help with consistent knowledge levels across Xoserve, and to provide a contact point if more information is required. We felt that our customers would benefit from seeing these notes should you wish to understand more about Xoserve’s interactions with the programme.
  • Summaries of the key risks: this is a summarised version of our risk log of topics we believe are affecting the programme and the work that we’re doing to address these risks.

Going forward, we’ll look to widen the information we share based on what our customers are asking to understand. If there are additional updates that you would like, or if you have a comment about any aspect of the programme, please contact Emma Lyndon


CSSC Programme S
ummary: 20th December 2019

We are currently still tracking at a Programme amber status, we are reflecting this status due to a number of areas of concern.
From a service management perspective we are still waiting for a fully informed plan from DCC/Capgemini, we have made numerous requests for this plan but to date it has not been made available. We have also raised concerns over indications that there is an expectation that Service Management integration is to be completed by the 14th April 2020 but this has never been part of the baselined CSS Implementation Plan or the MAD log.

Xoserve have requested that the SI provide a full change and release management plan. It has been confirmed that a plan will be produced but as yet a date for provision has not been confirmed.
The provision of data for SIT is being discussed at length with the SI. The requirements need to be fully articulated and understood to ensure existing service providers have enough time to complete their migration and governance activities to meet the programme timelines. Programme risks have been raised.

We continue to work closely with the SI and Industry parties at both the SI data working group and the SI testing working group. Both of these groups are still working to create the underlying processes to be included within the discreet testing phases and data migration strategy. These groups will continue next year and will come together from a data perspective.
From a Xoserve Consequential Market Trials perspective engagement with the industry is progressing well through the dedicated working group. Detailed preparation work will continue until test execution starts following the UK Link Code Release in June 2020. Participation in Consequential Change Market Trials is considered key in enabling Xoserve’s customers to fully test, with Xoserve, the new changes developed as a result of the new CSS Switching regime and as an opportunity to prepare for their support of successful CSS E2E testing. For any further details or to arrange involvement please contact : Jo Galloway, Market Trials Manager through .box.xoserve.CCMT

CSSC Weekly Programme Status Reports

Switching Programme Weekly Status Report: 10th January 2020

Switching Programme Weekly Status Report: 10th January 2020

Last updated on 10 Jan 2020

Day After Report (DAR) Ofgem Data Working Group 23rd October 2019

Last updated on 28 Oct 2019

DAR for the SI Technical Data Working Group 3rd September 2019

Last updated on 06 Sep 2019

DAR for the Data Working Group 21st August 2019

Last updated on 23 Aug 2019

DAR for Service Management Integration Workshop 13th August 2019

Last updated on 21 Aug 2019

DAR for Ofgem Design Forum 12th August 2019

Last updated on 21 Aug 2019

Network Teleconference - 1st August 2019

Last updated on 09 Aug 2019

Data Working Group - Wednesday 17th July

Last updated on 19 Jul 2019

Switching Programme Delivery Group - Tuesday 16th July

Last updated on 19 Jul 2019

Design Forum - Monday 15th July

Last updated on 19 Jul 2019

Design Forum – Monday 1st July 2019

Last updated on 21 Nov 2019

Implementation Group – Tuesday 2nd July 2019

Last updated on 21 Nov 2019

Ofgem Testing Workgroup – Tuesday 2nd July

Last updated on 21 Nov 2019



CSSC Key Risks Summary

CSSC Key Risks Summary: 18th October 2019

Last updated on 18 Oct 2019



Last Extraordinary DSG Meetings for CSS Consequential Change Meeting - 4th September 2019

View Extraordinary DSG Meetings for CSS Consequential Change Meeting Monday 4th September 2019 documents.



Draft Business Requirements Documents

UK Link File Format Change Summary

Last updated on 09 Sep 2019

Switching Programme Consequential Change - Gemini Business Readiness Document (BRD) v0.2 (clean)

Last updated on 29 Nov 2019

Switching Programme Consequential Change - Gas Transporter (GT) Independent Gas Transporter (IGT) Business Readiness Document (BRD) v0.2

Last updated on 29 Nov 2019

Switching Programme Consequential Change - Shipper Business Readiness Document (BRD) v0.7 (Clean)

Last updated on 29 Nov 2019

Draft Central Switching Service Consequential (CSSC) Programme Plan on a Page

Last updated on 11 Mar 2019

CSSC End to End To-be Processes

Last updated on 23 Sep 2019

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