NEW ZEALAND GAZETTE

No. 115

Alpine Energy Limited (Lines)

Reliability and Performance Measures - System Average Interruption Duration Index (SAIDI)

| Class | 2001/05
(Target) | 2001
(Target) | 2000 | 1999 | 1998 | 1997 |
|--------|----------------|--------------|---------|------|------|------|
| SAIDI for total number of interruptions | Overall | 84 | 98 | 81.94 | 106 | 150 | 86 |

| SAIDI for total number of interruptions within each interruption class (= a/b) |
| Class A | 6 | 8 | 8.14 | 23 | 19 | 28 |
| Class B | 13 | 15 | 14.64 | 10 | 23 | 24 |
| Class C | 50 | 55 | 31.72 | 57 | 40 | 23 |
| Class D | 15 | 20 | 27.45 | 16 | 68 | 11 |
| Class E | | | 0.00 | 0 | 0 | 0 |
| Class F | | | 0.00 | 0 | 0 | 0 |
| Class G | | | 0.00 | 0 | 0 | 0 |
| Class H | | | 0.00 | 0 | 0 | 0 |
| Class I | | | 0.00 | 0 | 0 | 0 |

| a = sum of interruption duration factors for all |
| Class A | 167,400 | 223,200 | 226,440 | 633,360 | 520,000 | 765,000 |
| Class B | 362,700 | 418,500 | 407,340 | 265,267 | 635,000 | 642,000 |
| Class C | 1,395,000 | 1,534,500 | 882,758 | 1,568,765 | 1,090,009 | 630,000 |
| Class D | 418,500 | 558,000 | 763,880 | 447,629 | 1,860,000 | 305,000 |
| Class E | | | 0 | 0 | 0 | 0 |
| Class F | | | 0 | 0 | 0 | 0 |
| Class G | | | 0 | 0 | 0 | 0 |
| Class H | | | 0 | 0 | 0 | 0 |
| Class I | | | 0 | 0 | 0 | 0 |

| b = Total Connections | 27,900 | 27,900 | 27,829 | 27,486 | 27,317 | 27,283 |

Reliability and Performance Measures - System Average Interruption Frequency Index (SAIFI)

| Class | 2001/05
(Target) | 2001
(Target) | 2000 | 1999 | 1998 | 1997 |
|--------|----------------|--------------|---------|------|------|------|
| SAIFI for total number of interruptions | Overall | 1.24 | 1.35 | 1.45 | 2.44 | 2.67 | 2.62 |

| SAIFI for total number of interruptions within each interruption class (= a/b) |
| Class A | 0.02 | 0.02 | 0.02 | 0.11 | 0.08 | 0.11 |
| Class B | 0.09 | 0.10 | 0.11 | 0.06 | 0.25 | 0.04 |
| Class C | 1.00 | 1.10 | 0.66 | 1.17 | 0.76 | 0.71 |
| Class D | 0.13 | 0.13 | 0.66 | 1.10 | 1.58 | 1.77 |
| Class E | | | 0.00 | 0.00 | 0.00 | 0.00 |
| Class F | | | 0.00 | 0.00 | 0.00 | 0.00 |
| Class G | | | 0.00 | 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 |

| a = sum of electricity connections affected by |
| Class A | 558 | 558 | 629 | 3,016 | 2,275 | 2,961 |
| Class B | 2,511 | 2,790 | 2,963 | 1,598 | 6,700 | 1,091 |
| Class C | 27,900 | 30,690 | 18,252 | 32,346 | 20,761 | 19,400 |
| Class D | 3,627 | 3,627 | 18,476 | 30,235 | 43,161 | 48,160 |
| Class E | | | 0 | 0 | 0 | 0 |
| Class F | | | 0 | 0 | 0 | 0 |
| Class G | | | 0 | 0 | 0 | 0 |
| Class H | | | 0 | 0 | 0 | 0 |
| Class I | | | 0 | 0 | 0 | 0 |

| b = Total Connections | 27,900 | 27,900 | 27,829 | 27,486 | 27,317 | 27,283 |

Reliability and Performance Measures - Connection Average Interruption Duration Index (CAIDI)

| Class | 2001/05
(Target) | 2001
(Target) | 2000 | 1999 | 1998 | 1997 |
|--------|----------------|--------------|---------|------|------|------|
| CAIDI for total number of interruptions | Overall | 67.74 | 72.59 | 56.56 | 43 | 56 | 33 |

| CAIDI for total number of interruptions within each interruption class (= a/b) |
| Class A | 300 | 400 | 360.00 | 210 | 229 | 258 |
| Class B | 144 | 150 | 137.48 | 166 | 95 | 350 |
| Class C | 50 | 50 | 48.37 | 48 | 53 | 32 |
| Class D | 115 | 154 | 41.34 | 15 | 43 | 6 |
| Class E | | | 0.00 | 0 | 0 | 0 |
| Class F | | | 0.00 | 0 | 0 | 0 |
| Class G | | | 0.00 | 0 | 0 | 0 |
| Class H | | | 0.00 | 0 | 0 | 0 |
| Class I | | | 0.00 | 0 | 0 | 0 |