HWG Agenda 3rd June 2010 Minutes from Previous HWG Meeting 13.00 – 13:05 HRDS Update on DR0176 for ROI 13.05 – 13.10 Update on HRDS Change Control Administration 13.10 – 13.20 HRDS Work Stack – existing and emerging items 13.20 – 13.40 New HRDS Website and Email Service 13.40 – 13.45 AOB 13.45 – 13.55 Next Steps 13.55 – 14.00 3 June, 2010 1

Minutes from HWG meeting – 23rd April 2010 3 June, 2010 2

DR 0176 – Harmonisation ROI Impact For approval today at IGG Low level of feedback from suppliers All items raised responded to directly or through IGG Target is to move to MCR at July IGG 3 June, 2010 3

HRDS Change Control Administration Change Request Numbering (from June 1) All new DRs/MCRs/CCRs will start at 1001 DR and its related MCR will share the same number DRs and MCRs will share common template Once assigned, the number will not change, regardless of the jurisdictional nature of the change Migration of existing DRs/MCRs Legacy MCRs will not be renumbered Legacy DRs moving to MCRs will take a new number 3 June, 2010 4

HRDS Current Work Stack DR1001 (Increase validity for Customer Read at COS from 3 to 5 days working days) – actively under internal review MCR0178 (Treatment of Supplier Unit excess of Generation over Demand) – awaiting CER clarification on global aggregation DR0178 (Market Processes for Domestic and Small Business Micro-generators, with import and export metering) – awaiting learnings from delivery of interim solution Emerging and Legacy work Supplier processes in disputed COS cases Bulk review / treatment of all legacy DRs/MCRs 3 June, 2010 5

New HRDS Website 3 June, 2010 6

HWG Meeting – 3rd June 2010 AOB 3 June, 2010 7

Next Steps Proposed Diary dates for HWG meetings in 2010: 05.07.2010 26.08.2010 Proposed dates are on Calendar of Events on RMDS website 3 June, 2010 8

Thank You 3 June, 2010 9