✨ Energy Reliability Statistics




Requirement 21

Disclosure of reliability performance measures

1 Total number of interruptions:

Network or generation owner Interruption class Classification of interruptions 2005 2004 2003 2002
Orion B Planned shutdowns 316 241 356 220
Orion C Unplanned cuts 462 403 611 404
Transpower A Planned shutdowns 2 4 0 0
Transpower D Unplanned cuts 5 8 4 2

Total: | 785 | 656 | 971 | 626 |

Interruption classes E, F and G do not apply to the company and consequently results are all zero.

2 & 3 Interruption targets:

Network or generation owner Interruption class Classification of interruptions 2006 Average 2006 - 2010
Orion B Planned shutdowns 385 385
Orion C Unplanned cuts 555 555

4 Proportion of Class C interruptions not restored within:

(a) 3 hours

24.9%

(b) 24 hours

0.2%

5(a) Faults per 100 circuit-km of electric line:

Voltage 2005 2004 2003 2002
66kV 1.2 0.0 4.4 2.9
33kV 3.8 2.0 3.9 3.7
11kV 8.5 7.7 11.6 7.7
All 8.0 7.1 10.9 7.3

(b) & (c) Target number of faults per 100 circuit-km of electric line:

Voltage 2006 Average 2006 - 2010
66kV 2.0 2.0
33kV 4.0 4.0
11kV 12.0 12.0
All 11.0 11.2


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Online Sources for this page:

VUW Te Waharoa PDF NZ Gazette 2005, No 132


Gazette.govt.nz PDF NZ Gazette 2005, No 132





✨ LLM interpretation of page content

πŸ’° Disclosure of reliability performance measures (continued from previous page)

πŸ’° Finance & Revenue
Energy reliability, Interruptions, Planned shutdowns, Unplanned cuts, Faults per circuit-km, Electricity