New Zealand Gazette – 2008 – No. 34

Page 802

✨ Energy Reliability Performance Measures



HORIZON ENERGY DISTRIBUTION LIMITED

Requirement 21 Reliability Performance Measures

For the year ended 31 March 2007

2007 2006 2005 2004
1) Interruptions
Class A - Transpower planned interruptions 1 1 8 1
Class B - Horizon planned interruptions 53 68 51 67
Class C - Horizon unplanned interruptions 92 110 125 83
Class D - Transpower unplanned interruptions 13 6 5 4
Class E - Horizon generation unplanned interruptions - - 1 -
Class F - Other generation unplanned interruptions 2 - 2 -
Class G - Other line owner unplanned interruptions - - - -
Class H - Other line owner planned interruptions - 2 - -
Class I - Not in A to H - - - -
Total Number of Interruptions 161 187 192 155
2008 2007 2006 2005 2004
2) Interruption Targets (Next Year)
(a) Planned interruptions (Class B) 62 62 62 62 80
(b) Unplanned interruptions (Class C) 82 82 82 82 85

| | | | | | |
| 3) Average Interruption Targets (Next 5 Years) | | | | | |
| (a) Planned interruptions (Class B) | 62 | 62 | 62 | 62 | 80 |
| (b) Unplanned interruptions (Class C) | 82 | 82 | 82 | 82 | 85 |

2007 2006 2005 2004
4) Proportion of Class C interruptions not restored within
(a) 3 hours 25.00% 25.06% 33.60% 14.46%
(b) 24 hours 0.89% 0.89% 8.80% 0.00%
2007 2006 2005 2004
5) Faults per 100 km of prescribed voltage line
(a) Number of faults
110 kV - 4.0 3.9 0.6
33 kV 4.0 4.0 - -
11 kV 9.0 9.0 7.0 4.9
Total Number of Faults 8.5 8.5 6.7 4.6
2008 2007 2006 2005 2004
(b) Number of Faults Targeted
110 kV - - - - -
33 kV - - 4.9 4.9 5.1
11 kV 4.9 4.9 4.9 4.9 5.1
Total Number of Faults Targeted 4.4 4.5 4.5 4.5 4.6

| | | | | | |
| (c) Average Number of Faults Targeted (Next 5yrs) |
| 110 kV | - | - | - | - | -
| 33 kV | - | - | 4.9 | 4.9 | 5.1 |
| 11 kV | 4.9 | 4.9 | 4.9 | 4.9 | 5.1 |
| Total Average Number of Faults Targeted | 4.4 | 4.5 | 4.5 | 4.5 | 4.6 |



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Online Sources for this page:

VUW Te Waharoa — PDF NZ Gazette 2008, No 34


Gazette.govt.nz — PDF NZ Gazette 2008, No 34




✨ LLM interpretation of page content

🏭 Financial Statements for Horizon Energy Distribution Limited (continued from previous page)

🏭 Trade, Customs & Industry
18 February 2008
Financial Statements, Audit, Commerce Commission, Electricity Information Disclosure Requirements, Commerce Act 1986, Performance Measures, Operating Surplus, Return on Funds, Return on Equity, Return on Investment

🏭 Requirement 21 Reliability Performance Measures

🏭 Trade, Customs & Industry
Energy Distribution, Reliability, Interruptions, Faults, Performance Measures