1. Primary & Sub deduct surveys Andrew Stone/Chris Warner

2. 2 How many?  National Grid – Approx 1,000 arrangements (ie: primary meters) Approx 2,230 sub deduct meters  Presentation provided by NGD at UNC Distribution Workstream in April 2007 on considerations/issues associated with possible adoption  National Grid does not own or operate any of the supply pipework downstream of the primary meter ECV.

3. 3 Pre Collected Data

4. 4

5. 5 Ofgem aspirations  Requirement to survey all sub-deduct networks in Britain  GDPCR Final Proposals – 3 rd December 2007 Allowance for surveys  To be completed over 2008/9 and 2009/10 formula years  Purpose to gather technical data relevant to potential re-engineering and future adoption of these networks by GDNs To inform the anticipated DBERR review of the relevant exemption order (Statutory Instrument 1996/449) due to expire on 1 st March 2011  Final report to Ofgem 1 st April 2010  Method for conducting work dependant on resources and experience of each GDN

6. 6 Next steps  National Grid is considering the most effective way in which it is able to meet Ofgem’s requirements  Options for Survey resourcing are currently under consideration. Use of direct labour. Shipper liaison to be facilitated by ‘customer’ department. Outsourcing to contractors by competitive tender. Contractor responsible for all Shipper/Supplier/Customer interfaces.  A method of capturing data in a consistent way needs to be developed  Confirm ownership of Primary/Sub-deduct Supply Point/User  Consistent method of contact with end-consumer needs to be agreed (contact letters, etc)  Extent of NGD liaison with Shipper/Supplier of key importance