Overview

1. MOD 0224 Facilitating the use of AMR in the Daily Metered Elective RegimeBusiness Rules for Discussion and Clarification27th November 2008

2. Overview The following slides detail business rules that have been identified at this stage in the analysis phase for discussion within the development workgroup. xoserve seeks agreement upon the detailed business rules and also clarification on those where necessary.

3. Business Rules – 1. Rollout • DM Elective nomination requests will be accepted from the start date of the roll out phase. • The ceiling level limit introduced will be for 25,000 DM Elective Meter Points. • xoserve will publish the DME Uptake figures on www.xoserve.com. • The uptake figures will be based on the number of live DME sites and the number of outstanding nominations, for example: • Shippers have nominated 25,000 requests as DME and confirmed 10,000 offers, the remaining 15,000 outstanding offers are valid for the next 6 months until they are confirmed/rejected or expire, no new nominations will be accepted until there is capacity following an acceptance/rejection or the offer expires.

4. Business Rules – 2. Eligibility for DM Elective • Eligibility for a site to be DME is based on Supply Point AQ. • Meter Points where the MPAQ is greater than 732,000 KWh and less than 58.6 GWh are eligible to become DM Elective. • The Supply Point Category must be equal to Firm.

5. Business Rules – 3. Registration as DM Elective • Referral will be suppressed where the SOQ is reduced or equal to the NDMSOQ. • All other referral validations apply.

6. Business Rules – 4. Read Submission • A cap of [10] daily read files will be set that a shipper can provide containing the DME read information. • The first Actual read that a shipper submits for a GFD should be accepted by the system, subsequent Actual reads submitted should be rejected. (Inc those submitted on same GFD prior to cut off time). • When a DME read file is received after the cut off point, this will be processed in the following days batch run after the current days files have been processed. • If a file is received on D after the cut off time containing D+5 reads these reads will be rejected as they will not be processed until D+6. • All UNC validations applicable to DM Mandatory/Voluntary reads will be applicable to DME reads unless explicitly specified. • The read processing batch job will be run once a day.

7. Business Rules – 5. Shipper Transfers • Provision of readings to the outgoing Shippers shall be the responsibility of the Transporter Agency. • Management of transfer reads and responsibilities need to de defined and agreed.

8. Business Rules – 6. Reconciliation and Resynchronisation • The following reads are required for resynchronisation: • Readings before resynchronisation • - Site Meter • - Uncorrected Corrector • - Corrected Corrector • - DL Meter • - DL Corrector • Readings after resynchronisation • - Site Meter • - Uncorrector • - Corrector • It is assumed same readings will be available for DME resynchronisations. • xoserve will perform sense check validations on the resynchronisation reads received.

9. Business Rules – Reporting

10. Discussion Points • At what point should ratchet charges be levied? Rule 9.1 states this should be only after the 12 month anniversary, if the site is re-nominated as NDM in this period and then in future is re-nominated as DME assume the 12 month rule is NOT re-applied? • What is the expectation regarding response files sent to the Shippers? Should this follow existing standards? • DMM/V Actual reads sent by DM Service Providers can have three possible outcomes: • - Acceptance • - Rejection • - Warning • The rejection and warnings are reported to the DM Service Providers, as DM Elective reads are subject to the same UNC validations should the DM Elective response files also report warning messages?