WWU Statement of LDZ Transportation Charges to ... - Our Home Page

Example 2A shipper has a domestic customer in Plymouth. Suppose the load has an AQ of 20,000 kWh per annum.Using the definition of end user categories table in Appendix 2A, this annual load places the end user incategory E0801B. Using the appropriate small NDM supply points table of load factors, it can be seen thatthe load factor for such a site in the South West LDZ is 29.7%. The peak daily load (SOQ) is therefore20,000 ÷ (365 × 0.297) = 184 kWh.ProcessCalculations UsedLDZ CapacityInvoice: LDZ Capacity (ZCA)See: Table 1.2.1Basis: p / peak day kWh / dayVolume: 365 days × 184 (SOQ) = 67,160Unit Rate: 0.1647 p / pdkWh / dayCharge: Volume x Unit Rate = £110.61PlusLDZ CommodityInvoice: Commodity (ZCO)See: Table 1.2.1Basis: p / kWhVolume: 20,000 (AQ)Unit Rate: 0.0272p / kWhCharge: Volume x Unit Rate = £5.44PlusCustomer (Capacity)Invoice: Capacity (CCA)See: Table 1.3.1Basis: p / kWhVolume: 365 days x 184(SOQ) = 67,160Unit Rate: 0.0867 pdkWh / dayCharge: £58.23EqualssTotal Network ChargeTotal annual network charge = £174.28Unit Charge: Dividing by the annual load of 20,000 kWh gives a unit LDZ charge of 0.871 pence per kWh.WWU Oct 11 Statement of Charges Page 9 of 26