✨ Electricity Reliability Statistics




Reliability Performance Measures (Requirement 21)

SAIFI

Average SAIFI Targets SAIFI Targets Actual SAIFI
2008/12 2008

SAIFI for total number of interruptions (= a/b)

where -

a = sum of electricity consumers affected by each of those interruptions
b = Total consumers

| | | | | 3.96 | 2.65 | 2.13 | 2.82 |

SAIFI Targets (=a/b)
Planned Interruptions
| | Class B | 0.20 | 0.20 |
| | Class C | 3.80 | 3.80 |

Unplanned Interruptions
Planned Interruptions
| a = projected number of electricity consumers affected by each of those interruptions
b = Projected total customers |
| | Class B | 4,992 / 24,962 | 4,992 / 24,962 |

Unplanned Interruptions
| a = projected number of electricity consumers affected by each of those interruptions
b = Projected total customers |
| | Class C | 94,855 / 24,962 | 94,855 / 24,962 |

SAIFI for total number of interruptions within each interruption class (= a/b)

Class 2008/12 2008 2007 2006 2005 2004
Class A 0.01 0.02 0.00 0.02
Class B 0.15 0.15 0.19 0.20
Class C 3.78 2.46 1.92 1.75
Class D 0.00 0.02 0.02 0.84
Class E 0.00 0.00 0.00 0.00
Class F 0.00 0.00 0.00 0.00
Class G 0.02 0.00 0.00 0.00
Class H 0.00 0.00 0.00 0.00
Class I 0.00 0.00 0.00 0.00

SAIFI for total of Interruptions
| | | 3.96 | 2.65 | 2.13 | 2.82 |

where -
a = sum of electricity consumers affected by each of those interruptions within that interruption class
b = Total consumers

Class 2008/12 2007 2006 2005
Class A 327 383 375
Class B 3,666 4,723 5,026
Class C 61,095 47,724 43,485
Class D 615 497 20,791
Class E 0 0 0
Class F 0 0 0
Class G 387 0 180
Class H 0 0 0
Class I 0 0 0

| Total Consumers (b) | | 24,913 | 24,864 | 24,856 | 24,876 |



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Online Sources for this page:

VUW Te Waharoa PDF NZ Gazette 2008, No 55


Gazette.govt.nz PDF NZ Gazette 2008, No 55





✨ LLM interpretation of page content

πŸ—οΈ Reliability Performance Measures for Electricity Interruptions and Faults (continued from previous page)

πŸ—οΈ Infrastructure & Public Works
Electricity, Reliability, Interruptions, Faults, Performance Measures, Statistics