1. RMDSRMDS Retail Market Design Services www.rmdservice.com 1 IGG Agenda – March 8 th 2007 Minutes from last IGG meeting10.00 – 10.10 Review of Action Items10.10 – 10.20 CER Update10.20 – 10.30 Gemserv Update 10.30 – 10.40 Market Operations Update 10.40 – 11.00 Networks SEM Update 11.00 – 11.30 Retail Market Design Service Update 11.30 – 11.40 Market Design Update 11.40– 11.50 –Discussion Requests & Market Change Requests Next Steps11.50 - 12.00

2. RMDSRMDS Retail Market Design Services www.rmdservice.com 2 Minutes Minutes from IGG meeting – February 1 st 2007

3. RMDSRMDS Retail Market Design Services www.rmdservice.com 3 Action Items Actions Addressed in Advance of Meeting Update on Action Items Actions to be covered during remainder of presentation Actions to be carried forward Other Action Items

4. RMDSRMDS Retail Market Design Services www.rmdservice.com 4 Actions addressed in advance of meeting Action Item 8 – Provide update on date for data provision –MCR 0083 refers –Live on week beginning 19 th February with some early problems which were resolved –Propose to close this item

5. RMDSRMDS Retail Market Design Services www.rmdservice.com 5 Update on Action Items Action Item 4 – Review possibility of creating and providing dedicated MPRN data for use in all IPT tests ESB Networks ISC have agreed to this in principle Draft proposal being finalised

6. RMDSRMDS Retail Market Design Services www.rmdservice.com 6 Update on Action Items Action Item 12 – RMDS to investigate the procedural issue whereby a duplicate MPRN is generated when a quotation is ‘rolled back’ –Proposal to progress the issue: Modify the draft Working Practice as follows: –Duplicate MPRNs that are not registered can be deleted. –Duplicates that re registered can be deleted only if the supplier is informed in advance. –The root cause is reported to the following IGG –ESBN continue t take action to address the root causes.

7. RMDSRMDS Retail Market Design Services www.rmdservice.com 7 Update on Action Items Action Item 23– RMDS Draft Business Plan 2007 –Issued to MPs on 5 th January –Final version with CER for approval

8. RMDSRMDS Retail Market Design Services www.rmdservice.com 8 Update on Action Items Action Item 3 – Review Objections and Cancellations process –Numbers with CER for Review –Will be raised at the next meeting of the Supplier Forum –Propose to close this item

9. RMDSRMDS Retail Market Design Services www.rmdservice.com 9 Update on Action Items Action Item 5 – Review note detailing the difficulties surrounding suppression of withdrawal of CoS reads –CER Update –Will be raised at the next meeting of the Supplier Forum –Propose to close this item

10. RMDSRMDS Retail Market Design Services www.rmdservice.com 10 Actions to be covered during remainder of presentation Action Item 10 –Update DR 0123 – Versioning of 341 message to include a table indicating how versioning will work DR 0123 has been updated See discussion points under Market Design section

11. RMDSRMDS Retail Market Design Services www.rmdservice.com 11 Action Items to be carried forward Action Item 6 – Investigate whether new 131 message could be issued for Special Read Request –DR 0117 has been updated and will issue shortly

12. RMDSRMDS Retail Market Design Services www.rmdservice.com 12 Action Items to be carried forward Action Item 7 – Update MCC Guidance document –Document in Final Review Stage

13. RMDSRMDS Retail Market Design Services www.rmdservice.com 13 Action Items to be carried forward Action Item 13 – Prepare proposals on addresses in the Retail Market –Data Standards Document issued to the market on Tuesday 6 th March –Feedback Required

14. RMDSRMDS Retail Market Design Services www.rmdservice.com 14 Action Items to be covered later in the presentation Action Item 11 – Issue revised DR103- Vulnerable Customers –Version 7.0 has issued –At the last conference call, one MP raised a query around the automatic deletion of Medical Equipment flags –Covered later in the presentation

15. RMDSRMDS Retail Market Design Services www.rmdservice.com 15 Actions to be covered during remainder of presentation Action Item 16, 17, 18, 19, 20, 21 & 22 –Covered in SEM presentation

16. RMDSRMDS Retail Market Design Services www.rmdservice.com 16 CER Update

17. RMDSRMDS Retail Market Design Services www.rmdservice.com 17 Gemserv Update

18. RMDSRMDS Retail Market Design Services www.rmdservice.com 18 Market Operations Update

19. RMDSRMDS Retail Market Design Service www.rmdservice.com 19 Retail Electricity Market Issues Update Susan Morrissey, RMDS

20. RMDSRMDS Retail Market Design Services www.rmdservice.com 20 Retail Electricity Market Issues Log Log continuing to issue on a weekly basis Summary Statistics (as per last release – 07.03.2007) –Total Number of Issues Logged 142 –Total ‘Closed’ 126 –Total ‘In Progress’ 12 –Total ‘Being Monitored’ 1 –Total ‘Logged’ 3 –Issues Resulting in DRRs 9 –Total Raised Since Last Issue 0 –Total Closed Since Last Issue 0

21. RMDSRMDS Retail Market Design Service www.rmdservice.com 21 Retail Market Design Service Update C. Madden, RMDS

22. RMDSRMDS Retail Market Design Services www.rmdservice.com 22 Retail Market Design Service Update Vulnerable Customers Issue raised by one supplier: Market Systems will automatically delete life support Medical Equipment flag if a non-life support flag is advised – If a Supplier submits a non-Life Support Medical Equipment flag on an 013 and the Market Systems are storing a life support Medical Equipment flag for that customer, 013 message will be rejected with reason code ‘IA’ and the supplier must actively delete life support flag using 013 message before resubmitting the 013 message for the non-life support flag – As previously, Automatic deletion will occur in the case of Change of Legal Entity being advised on an 016 message or as part of a Change of Supplier – Feedback required

23. RMDSRMDS Retail Market Design Service www.rmdservice.com 23 Discussion Requests & Market Change Requests Susan Morrissey, RMDS

24. RMDSRMDS Retail Market Design Services www.rmdservice.com 24 New Market Change Request DR 0123 - Versioning of the 341 Message DR has been updated: Version no. proposed for MPRN level Replacement flag proposed for register level. Questions: Should Replacement flag be at MPRN level - or both levels Channel Status flag: two values VV: all values are valid. VI all values are invalid. Should these values be renamed? Should this be at MPRN level. Feedback requested by 22 nd March

25. RMDSRMDS Retail Market Design Services www.rmdservice.com 25 New Market Change Request MCR 0127 - Decouple Connection Agreement requirement from Change of Supplier where MIC >= 100kVA and there is no Change of Legal Entity Version 1.1 issued 1st March Feedback requested by 22 nd March

26. RMDSRMDS Retail Market Design Services www.rmdservice.com 26 Discussion Request DR 129 – Data changes to accommodate new unmetered lamp types Raised by : ESB Networks This DR has been raised to add to the code value list for the unmetered type code in the retail market design. Two new unmetered lamp types will be used for public lighting in the near future Suppliers may need to take account of these in receiving the 700 and 701 messages. Solution The two new Lamp types are being added to the SAP ISU model.

27. RMDSRMDS Retail Market Design Services www.rmdservice.com 27 Discussion Request DR 128 Increase in tolerance levels for NQH Meter Reading validation Raised by: ESB Networks Temporarily withdrawn for further assessment

28. RMDSRMDS Retail Market Design Services www.rmdservice.com 28 Like-for-like Replacement of QH Meters Where a QH meter is replaced: –New serial no. is uploaded with meter data that night. –Meter is updated on MV90 –Old meter remains on SAP pending paper copy –Meanwhile 341s still have old serial no –When CX is received, SAP is updated, 331 issues with retrospective date of effect.

29. RMDSRMDS Retail Market Design Services www.rmdservice.com 29 Like-for-like Replacement of QH Meters Issue for some suppliers in pre-billing Serial Number on some 341s does not match that in the 331 Suggested solution: –Update SAP at he same time as MV90 I.e. same or next day.

30. RMDSRMDS Retail Market Design Service www.rmdservice.com 30 Next Steps Proposed Diary dates for subsequent meetings –19.04.07 –07.06.07 (proposed change from 31.05.07 – near bank holiday) –12.07.07 –23.08.07

31. RMDSRMDS Retail Market Design Service www.rmdservice.com 31 Next Steps Propose to continue with conference call every two weeks – proposed dates – 22.03.07 – 04.04.07 – 03.05.07 – 17.05.07 Call details will remain the same: –Number: 01-6647602 PIN : 77640 –Contingency number remains: 01-6647777 PIN: 60236

32. RMDSRMDS Retail Market Design Services www.rmdservice.com 32 IGG – April 19 th 2007 Draft Agenda Minutes from last IGG meeting10.00 – 10.10 Review of Action Items10.10 – 10.20 CER Update10.20 – 10.30 Gemserv Update 10.30 – 10.40 Market Operations Update 10.40 – 11.00 Networks SEM Update 11.00 – 12.00 Retail Market Design Service Update 12.00 – 12.10 Market Design Update 12.10– 12.20 –Discussion Requests & Market Change Requests Next Steps12.20 - 12.30 Feedback welcome

33. RMDSRMDS Retail Market Design Service www.rmdservice.com 33 Thank You