Datalogger / DMV Modification Proposals - Summary Simon Trivella – 24th June 2010 Distribution Workstream - Elexon

Background / Drivers The world is changing – increase in AMR usage and new supplier obligation increases the number of devices attached to meters More options for obtaining data More cases of devices being disconnected resulting in lost data and therefore data not being usable DM elective (DME) due to be introduced in November 2010 Consistent with meter reading being a competitive activity Modification Proposal 0258 already implemented which reflects this changing world Allows Transporter to procure data from 3rd parties

Background / Drivers DM Unbundling to be considered / developed Potential lengthy timescales WWU is drafting three Modification Proposals Priority of position for Transporter equipment Removal DM voluntary (DMV) sites from DM liability regime Removal of DMV regime when DME is operational and after transition period Detailed discussions to take place at June 2010 Distribution Workstream Feedback / comments welcome in the interim period

Priority of position for Transporter equipment Gives priority of position to Transporter dataloggers and data recorders installed for UNC purposes UNC refers to IGE Meter Recommendations Installation of Supply Meter only IGEM/GM/7A proposes that loggers used for fiscal purposes should have priority This does not apply to equipment used for other purposes (e.g. Demand Estimation) We recognise work to develop standard MPU contract For historical reasons Transporter equipment tends to have priority of position Modification raised to regularise situation and ensure that the position is clear within the UNC

Removal DM voluntary sites from DM liabilities DMV sites can be from 73,200kWh to 58,599,000kWh Not material to daily balancing requirements Daily settlement data requirements are D+5 Removal of DMV from DM liability regime would mean that networks concentrated on the DMM sites that are material to daily balancing

Removal of DMV regime Once competitive activity established then the bundled service should cease to be an obligation Transporters could act as a DM(E)SP (outside of UNC arrangements) Consistent with meter reading being competitive activity DM elective will provide competitive alternative to DMV Phased approach consistent with DME rollout Transition period of [3] months following each Phase 1st Phase transition period of [6] months After transition period all DMV sites become DME or NDM

Next steps Comments / Feedback welcome [Draft] Modification Proposals raised in June 2010 Further Discussion / Development at June 2010 Distribution Workstream

Datalogger / DMV Modification Proposals - Summary Simon Trivella – 24th June 2010 Distribution Workstream - Elexon