✨ Electricity Reliability Statistics
Reliability Performance Measures (Schedule 1, Part 5)
Para
SAIFI
| | Average SAIFI Targets | SAIFI Targets | Actual SAIFI |
|---|---|---|---|---|---|
| Class | | 2003/07 | 2003 | 2002 | 2001 | 2000 | 1999 |
12
SAIFI for total number of interruptions (a/b)
where -
a = sum of electricity consumers affected by each of those interruptions
b = Total consumers
| | | | 2.78 | 4.39 | 3.55 | 4.15 |
13, 14
SAIFI Targets (a/b)
Planned Interruptions
| Class | | 0.39 | 0.30 | |
| Class B | |
Unplanned Interruptions
| Class C | | 2.24 | 1.90 | |
where -
Planned Interruptions
a = projected number of electricity consumers affected by each of those interruptions
b = Projected total customers
| Class B | 10,123 | 7,726 |
| | 25,950 | 25,754 |
Unplanned Interruptions
a = projected number of electricity consumers affected by each of those interruptions
b = Projected total customers
| Class C | 57,622 | 48,333 |
| | 25,950 | 25,754 |
15
SAIFI for total number of interruptions within each interruption class (= a/b)
| Class A | | | 0.00 | 0.11 | 0.02 | 0.00 |
| Class B | | | 0.29 | 0.42 | 0.45 | 1.33 |
| Class C | | | 2.28 | 3.59 | 2.58 | 2.83 |
| Class D | | | 0.21 | 0.27 | 0.50 | 0.00 |
SAIFI for total of interruptions
| | 2.78 | 4.39 | 3.55 | 4.16 |
where -
a = sum of electricity consumers affected by each of those interruptions within that interruption class
| Class A | 0 | 2,859 | 462 | 0 |
| Class B | 7,478 | 10,841 | 10,714 | 26,391 |
| Class C | 58,178 | 93,310 | 61,081 | 56,156 |
| Class D | 5,430 | 6,955 | 11,743 | 0 |
b = Total consumers
| | 25,552 | 25,950 | 23,694 | 19,843 |
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Online Sources for this page:
VUW Te Waharoa —
NZ Gazette 2002, No 117
Gazette.govt.nz —
NZ Gazette 2002, No 117
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Reliability Performance Measures
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🏗️ Infrastructure & Public WorksElectricity, Reliability, Interruptions, Faults, Performance Measures, Statistics