Development Work Group 194 Orphaned Sites Analysis 30 June 2008

Lifecycle of a meter point Meter point requested and created E.g. Job cancelled, duplicate etc Evidence of meter installed at site No evidence of meter ever installed at site Not yet confirmed (i.e. unregistered) Scenario A – Confirmed by siteworks Shipper Scenario B – Confirmed by another Shipper Meter point end dated after xoserve investigations and discussions with Shipper. No gas consumed. Gas quantity unknown – included in RbD – nothing in Verification – will eventually become Scenario A or B Pre-confirmation gas is left in RbD LATE CONFIRMED GAS ESTIMATE IN VERIFICATION All historic gas is billed to Shipper and removed from RbD “Orphaned sites”

Orphaned Sites – Energy Analysis Late confirmed sites where M Number requesting Shipper does not confirm Colloquially called “Orphaned Sites” Confirming Shipper can avoid pre-confirmation energy (existing industry agreement) Pre-confirmation energy remains in RbD Pre-confirmation energy is a reconciling item in RbD Verification Following slides show numbers and associated energy of “Orphaned Sites” for the last 29 months (Jan 06 to May 08)

Orphaned Sites – Time between meter fix and confirmation

Orphaned Sites – Estimated Energy between meter fix and confirmation - mWh

Orphaned Sites – Estimated Energy between meter fix and confirmation - %