β¨ Electricity Performance Measures and Statistics
DISCLOSURE OF ENERGY EFFICIENCY PERFORMANCE MEASURES AND STATISTICS PURSUANT TO SCHEDULE 1, PART 4 OF THE ELECTRICITY INFORMATION DISCLOSURE REQUIREMENTS 2004
1. Energy Delivery Efficiency
Performance Measures
2005
2004
2003
2002
(a) Load Factor
76.37%
77.87%
77.38%
74.85%
(b) Loss Ratio
3.22%
3.54%
3.13%
4.50%
* Loss Ratio Estimated
* 3.60%
* 3.70%
* 3.70%
* 3.60%
(c) Capacity Utilisation
32.23%
31.82%
32.35%
32.70%
Estimated, based on distribution system configuration
2. Statistics
(a) System length, broken down by voltage:
Voltage
2005
2004
2003
2002
- 33 kV
235.0 km
235.0 km
230.4 km
229.6 km
- 11 kV
3,244.0 km
3,197.0 km
3,194.1 km
3,137.0 km
- 400V
1,940.0 km
1,873.0 km
2,006.0 km
1,970.0 km
- Total
5,419.0 km
5,305.0 km
5,430.5 km
5,336.6 km
(b) Circuit length of overhead lines, broken down by voltage:
Voltage
2005
2004
2003
2002
- 33 kV
219.0 km
219.0 km
213.0 km
213.0 km
- 11 kV
3,125.0 km
3,093.0 km
3,097.0 km
3,050.0 km
- 400V
1,562.0 km
1,557.0 km
1,733.0 km
1,716.0 km
- Total
4,906.0 km
4,869.0 km
5,043.0 km
4,979.0 km
(c) Circuit length of underground cables broken down by voltage:
Voltage
2005
2004
2003
2002
- 33 kV
16.0 km
16.0 km
17.4 km
16.6 km
- 11 kV
119.0 km
104.0 km
97.1 km
87.0 km
- 400V
378.0 km
316.0 km
273.0 km
254.0 km
- Total
513.0 km
436.0 km
387.5 km
357.6 km
(d) Transformer capacity
2005
2004
2003
2002
419,982 kVA
414,440 kVA
405,685 kVA
397,445 kVA
(e) Maximum demand
2005
2004
2003
2002
135,344 kW
131,880 kW
131,560 kW
129,978 kW
(f) Total electricity entering the system - kWh
2005
2004
2003
2002
905,439,718
899,598,208
891,815,703
852,225,151
(g) Total electricity supplied from the system for other retailers