New Zealand Gazette – 2010 – No. 166

Page 4158

✨ Gas Industry Performance Measures



4158 NEW ZEALAND GAZETTE, No. 166 3 DECEMBER 2010

Statement of Performance Measures
For the Year ended 30 June 2010
For the purposes of the Gas (Information Disclosure) Regulations 1997
Regulations 15, 17, & 18

Reference 2010 2009 2008 2007 2006 2008 2007
1. Financial Performance Measures
Accounting Return on Total Assets Sch 1 Pt 2 1(a) 11.74% 10.13% (4) 7.58% 1.10% 7.83% 4.27% 8.21%
Accounting Return on Equity Sch 1 Pt 2 1(b) 12.69% 11.81% 11.37% -0.02% 5.18% 5.42% 6.25%
Accounting Rate of Profit Including Network Revaluation Sch 1 Pt 2 1(c) 10.99% 9.28% (4) 11.12% (2) -0.20% (1) 34.34% (1) 7.74% 4.57%
Accounting Rate of Profit Excluding Network Revaluation 10.99% 9.28% (4) 8.12% 0.07% 6.63% 4.79% 4.84%

Note: The Accounting Rate of Profit Excluding Network Revaluation is not required by the Gas (Information Disclosure) Regulations 1997.

The figures in italics have been adjusted to exclude the subvention payment to WDC and the resulting profit taxed at 33% (2007:33%). This has been provided for ease of comparison to previous financial years.

2. Efficiency Performance Measures

Reference 2010 2009 2008 2007 2006
Direct Line Costs per Kilometre Sch 1 Pt 2 2(a) $ 1,711 $ 2,337 $ 2,916 $ 2,416 $ 2,068
Indirect Line Costs per Gas Customer Sch 1 Pt 2 2(b) $ 99 $ 82 $ 84 $ 73 $ 62

3. Energy Delivery Efficiency Performance Measures

Reference 2010 2009 2008 2007 2006
Load Factor Sch 1 Pt 3 1(a) 79.30% 69.70% 80.10% 79.50% 75.77%
Unaccounted for Gas Ratio Sch 1 Pt 3 1(b) 0.48% 1.18% 1.80% 1.80% 1.80%

4. Statistics

Reference 2010 2009 2008 2007 2006
System Length (km) Sch 1 Pt 3 2(a) 386 384 366 365 362
Maximum Monthly Amount of Gas Entering System (GJ) Sch 1 Pt 3 2(b) 106,117 114,968 107,645 110,651 113,872
Total Annual Amount of Gas Conveyed through System (GJ) Sch 1 Pt 3 2(c) 1,094,541 961,994 1,034,957 1,055,279 1,035,434
Total Annual Amount of Gas Conveyed through System for Persons not in a Prescribed Business Relationship (GJ/pa) Sch 1 Pt 3 2(d) 742,414 514,832 542,665 538,798 507,347
Total Number of Customers Sch 1 Pt 3 2(e) 10,309 10,287 10,331 10,326 10,581

5. Reliability Performance Measures

Reference 2010 2009 2008 2007 2006
Unplanned Transmission System Interruptions (hours) Sch 1 Pt 4 1 nil nil nil nil nil
Unplanned Distribution System Interruptions not related to Transmission System Interruptions (hours/customer) Sch 1 Pt 4 2(a) 0.2542 0.0258 0.018 0.0152 0.0216
Unplanned Distribution System Interruptions related to Transmission System Interruptions (hours/customer) Sch 1 Pt 4 2(b) nil nil nil nil nil
Unplanned Distribution System Interruptions as a result of third party damage (hours/customer) 0.0121 0.02 0.0116 0.0067 0.0157
Unplanned Distribution System Interruptions not as a result of third party damage (hours/customer) 0.0058 0.0058 0.0064 0.0085 0.0059

Note: The last two performance measures are not required by the Gas (Information Disclosure) Regulations 1997.

  1. The increase in percentage is due to the revaluation carried out during the year.
  2. The increase in percentage is due to the revaluation carried out during the year and the reversal of the subvention payment.
  3. The increase in Unplanned Distribution System Interruptions not related to Transmission System Interruptions was due to water inundation outage in St Johns Hill Wanganui in late June 2010. This single significant event was caused by a leaking water pipe and contributed 0.225 hours/customer. Without that event the measure would have been 0.0296
  4. The comparative percentage for 2009 has been adjusted to account for the prior period error disclosed in Note 17 of the Financial Statements


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Financial Performance, Efficiency, Energy Delivery, Reliability, Gas Industry