Modification 0117 – Additional Considerations UNC Distribution Workstream 26 October 2006

Modification 0117 - Impacts Modification proposes a two-year cut-off for all reconciliations and adjustments Annual Read Meters must be read once every 24 months (M3.5.1) Transporters initiate “Must Read” process (M3.6) on 2nd anniversary of last read Gaining access may take some time Any resulting reconciliation would be truncated to two years under this proposal

Modification 0117 - Impacts Impact of truncating reconciliation to two years Last read: -2 yrs, 3 mths Cut-off -2 yrs Must read No charges Reconciliation charges Allocated energy Reconciliation energy Actual energy time

Modification 0117 – Impacts (2) UNC allows 18 months for invoice charges to be queried A two-year cut-off would limit the ability to obtain adjustments in the event of a query Query raised 18 mths later Year 1 Year 2 Year 3 Year 4 Financial adjustment Reconciliation charges 2 year duration Adjustment calculated No adjustment Maximum 2 years retrospection

Modification 0117 – Update of cut-off date Only Reconciliation and Adhoc invoices include retrospective elements – Capacity and Commodity relate solely to the latest billing month Reconciliation is issued at M+18 (business days) following the billing month and includes RbD impacts of Financial Adjustments issued in the billing month May need to truncate financial adjustments one month earlier, to ensure that the Reconciliation invoice is compliant with cut-off date Cut-off date when adjustment is issued Cut-off date when RbD charge is issued Adjustment invoice issue date Corresponding RbD charge issued Primary adjustment period truncated to align with date of RbD charges Maximum 2 years retrospection

Modification 0117 – Update of cut-off date Considerations when updating the cut-off date Cut-off date must be updated before any new charges are calculated for inclusion on the Reconciliation invoice All Suppressed Reconciliations (“Filter Failures") in Shipper and Transporter work queues need to be reviewed and duration amended as appropriate All Financial Adjustments in progress need to be reviewed and durations amended as appropriate