CONFIDENTIAL - Title of presentation © 24 November 2009 EDF Energy plc

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CONFIDENTIAL - Title of presentation © 24 November 2009 EDF Energy plc CONFIDENTIAL - Title of presentation © 24 November 2009 EDF Energy plc. All rights Reserved.

UNC Modification Proposal 0248 Meter Reading Replacement - Review CONFIDENTIAL - Title of presentation © 24 November 2009 EDF Energy plc. All rights Reserved.

Background Raised 03 April 2009 Main aims: Create a simple process to allow the replacement of meter readings when a subsequent reading has been submitted Low cost interim solution until full systematised solution developed through Nexus Enable reduced AQ amendments for Shippers and Transporters Improved data quality Work with xoserve to identify aims and solution Withdrawn 19 April 2010 as no ROM & DCA £40,000 - £80,000 Rough estimate of £400,000 to £1.5m to implement CONFIDENTIAL - Title of presentation © 24 November 2009 EDF Energy plc. All rights Reserved.

Our Experience of 0248 What went badly Supposed to be simple Costs Expectations not managed at the beginning Issues producing demand forecasts Need to engage technical experts Time What went well Customer engagement (eventually) Some costs (eventually) CONFIDENTIAL - Title of presentation © 24 November 2009 EDF Energy plc. All rights Reserved.

CONFIDENTIAL - Title of presentation © 24 November 2009 EDF Energy plc CONFIDENTIAL - Title of presentation © 24 November 2009 EDF Energy plc. All rights Reserved.