APPENDIX 25
Memorandum submitted by the Office of
Electricity Regulation
USE OF SYSTEM CHARGES
I enclose a table which sets out Distribution
and Transmission Use of System charges on a regional basis. Accompanying
notes explain the derivation of, and assumptions behind, the figures.
15 April 1999
Distribution and transmission costs in
England and Wales for standard domestic customer
| | |
| | | |
| DUoS
| | Transmission |
| 1993-94 | Standing Charge £/year
| Unit Rate p/kWh | DUoS Bill £/year
| Infrastructure Charge £/kW | TUoS Bill £/year
| Use of System Bill |
| | |
| | | |
| Eastern | 24.80 | 1.60
| 77.60 | 12.10 | 8.96
| 86.56 |
| East Midlands | 33.84 | 1.51
| 83.67 | 9.20 | 6.80
| 90.47 |
| London | 37.20 | 1.75
| 95.08 | 15.56 | 10.86
| 105.94 |
| | |
| 13.78 | 10.20 | 105.28
|
| Manweb | 44.88 | 1.72
| 101.64 | 9.54 | 7.06
| 108.70 |
| MEB | 25.12 | 1.59
| 77.59 | 10.35 | 7.66
| 85.25 |
| Northern | 39.72 | 1.67
| 94.67 | 7.61 | 5.63
| 100.30 |
| Norweb | 38.96 | 1.61
| 92.09 | 10.00 | 7.40
| 99.49 |
| Seeboard | 28.96 | 1.66
| 83.74 | 10.29 | 7.61
| 91.35 |
| Southern | 35.16 | 1.52
| 85.32 | 13.20 | 9.77
| 95.09 |
| Swalec | 40.60 | 2.35
| 118.15 | 12.08 | 8.94
| 127.09 |
| Sweb | 38.20 | 2.03
| 105.19 | 13.66 | 10.11
| 115.30 |
| | |
| 13.66 | 10.11 | 115.30
|
| Yorkshire | 32.64 | 1.79
| 91.71 | 9.04 | 6.69
| 98.40 |
| | |
| | | |
| England and Wales Average | 35.01
| 1.73 | 92.20 | 11.43
| 8.41 | 100.62 |
| Distribution and transmission costs in England and Wales for standard domestic customer
|
| | |
| | | |
| DUoS
| | Transmission
|
| 1998-99 | Standing Charge £/year
| Unit Rate p/kWh | DUoS Bill £/year
| Infrastructure Charge £/kW | TUoS Bill £/year
| Use of System Bill |
| | |
| | | |
| Eastern | 14.24 | 1.37
| 59.45 | 9.33 | 6.91
| 66.36 |
| East Midlands | 23.00 | 1.50
| 72.50 | 7.63 | 5.65
| 78.15 |
| London | 28.80 | 1.42
| 75.76 | 14.06 | 10.41
| 86.16 |
| Manweb | 31.08 | 1.78
| 89.82 | 5.36 | 3.96
| 93.78 |
| MEB | 26.48 | 1.34
| 70.54 | 9.23 | 6.83
| 77.37 |
| Northern | 18.76 | 1.91
| 81.79 | 0.54 | 0.40
| 82.19 |
| Norweb | 32.60 | 1.44
| 80.12 | 5.32 | 3.93
| 84.05 |
| Seeboard | 18.48 | 1.48
| 67.32 | 10.51 | 7.77
| 75.09 |
| Southern | 27.00 | 1.40
| 73.20 | 13.06 | 9.67
| 82.87 |
| Swalec | 38.68 | 2.05
| 106.33 | 14.61 | 10.81
| 117.14 |
| Sweb | 28.40 | 1.88
| 90.44 | 16.39 | 12.13
| 102.57 |
| Yorkshire | 19.20 | 1.68
| 74.64 | 4.83 | 3.57
| 78.21 |
| | |
| | | |
| England and Wales Average | 25.56
| 1.60 | 78.49 | 9.24
| 6.84 | 85.33 |
| Distribution and transmission costs in Scotland for standard domestic customer
|
| | |
| | | |
| DUoS
| | Transmission
|
| 1993-94 | Standing Charge £/year
| Unit Rate p/kWh | DUoS Bill £/year
| Unit Rate | TUoS Bill £/year
| Use of System Bill |
| | |
| | | |
| Scottish Hydro | 20.64 | 1.13
| 57.93 | 0.22 | 7.26
| 63.54 |
| Scottish Power | 36.12 | 1.24
| 77.04 | 0.42 | 13.86
| 90.90 |
| Average | 28.38 | 1.19
| 67.49 | 0.32 | 10.56
| 78.05 |
| | |
| | | |
| GB Average | 34.06 | 1.65
| 88.67 | 10.04 | 8.68
| 97.35 |
| Distribution and transmission costs in Scotland for standard domestic customer
|
| | |
| | | |
| DUoS
| | Transmission
|
| 1998-99 | Standing Charge £/year
| Unit Rate p/kWh | DUoS Bill £/year
| Unit Rate | TUoS Bill £/year
| Use of System Bill |
| | |
| | | |
| Scottish Hydro | 24.44 | 1.69
| 80.21 | 0.40 | 13.20
| 93.41 |
| Scottish Power | 23.56 | 2.18
| 95.50 | 0.17 | 5.61
| 101.11 |
| Average | 24.00 | 1.94
| 87.86 | 0.29 | 9.41
| 97.26 |
| | |
| | | |
| GB Average | 25.34 | 1.65
| 79.83 | 7.96 | 7.20
| 87.03 |
NOTES
Distribution Use of System charges (DUoS)
Rates are PES published DUoS charges as at 1 April of each
year.
DUoS bill £/year calculated assuming average annual
consumption for a standard domestic customer of 3300 kWh.
Transmission Use of System charges (TUoS)
For England and Wales RECs, transmission charges are levied
by NGC. NGC charges an amount per kW based on demand taken at
time of system peak. Therefore, we have assumed that a domestic
customer takes 0.74 kW at time of system peak and so the transmission
charge related to a standard domestic customer equals 0.74 x NGC's
charge per kW. These charges vary zonally. In 1993-94 NGC's charging
zones did not coincide with RECs' geographical areas. For example,
NGC had two charging zones each in London and SWEB's areas. We
have therefore roughly allocated NGC zones to RECs, but such allocation
should be treated with caution. In 1998-99, NGC's charging zones
were identical to REC areas and so this problem does not arise.
In Scotland, ScottishPower and Scottish Hydro publish separately
transmission charges on a pence/kWh basis for standard domestic
customers. These are therefore given both as a unit rate and as
an annual bill calculated using 3300 kWh consumption.
Total Use of System bill
A Great Britain average may be derived by combining all Use
of System bills and averaging over 14, to give £97.35 and
£87.03 in 1993-94 and 1998-99 respectively.
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