As part of the Market Performance Operating Plan (MPOP) 2020/21, MOSL committed to streamlining the customer and asset data management process.

In December 2020, MOSL issued a Request for Information to help inform improvements to known issues within the policies and with the processes of supply point registration contained in code subsidiary document CSD 0101 – Registration: New Supply Points.

We received responses from 16 wholesalers, two New Appointments and Variations (NAVs), which provided 99 per cent coverage of the wholesaler and five retailers providing 53 per cent of the market based on aggregate share of supply. Today we are publishing a summary of responses from trading parties.

  • The RFI sought feedback for the following known issues:
  • Trading party engagement with the current process
  • Provision of information at supply point (SPID) registration
  • If code change CPW089: ‘T101 Adding Billing Fields’ resolves known issues
  • Where responsibilities should reside in relation to SPID tradability and temporary building supplies (TBS).

A summary of the responses is below with more detail available in the response document.


  • Both wholesalers and retailers noted that the current new connections process is adversely impacting trading parties and adding additional costs to the market due to inefficiencies such as multiple handoffs. Responses were clear that change proposal CPW089 ‘T101 Adding Billing Fields’ would not address these issues
  • Retailers noted that between 30 per cent and 70 per cent of supply points are ending up vacant due to inadequate data, with performance varying between wholesaler regions
  • Some wholesalers noted that market code requirements are forcing them to register a supply point before adequate information is available
  • Market Performance Standards (MPS) are disincentivising the provision of reliable customer details and accurate occupancy status due to the short submission window for core data items
  • While there is no consensus on who should manage new connections, there is clear feedback that the process needs to be simplified
  • Several trading parties noted that there are too many handoffs and potential duplication of effort.

We will be using the information gathered to investigate potential solutions to the New Connections process. In parallel, we will work with Ofwat and the Retailer Wholesaler Group (RWG) to investigate the eligibility of Temporary Building Supplies.

If you have any questions regarding this RFI, please contact This email address is being protected from spambots. You need JavaScript enabled to view it.. 

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