New Zealand Gazette – 1997 – No. 114

Page 2672

✨ Energy Efficiency Performance Report



2672 NEW ZEALAND GAZETTE No. 114

MAINPOWER NEW ZEALAND LTD
DISCLOSURE OF ENERGY EFFICIENCY PERFORMANCE
MEASURES AND STATISTICS PURSUANT TO REGULATION 15 AND PART
III OF THE FIRST SCHEDULE OF THE
ELECTRICITY (INFORMATION DISCLOSURE) REGULATIONS 1994
For The Year Ended 31 March 1997

Disclosure of Energy Efficiency Performance Measures and Statistics

  1. Energy Delivery Efficiency Performance Measures

    Load Factor
    Electrical energy entering the distribution system
    Maximum demand * Hours per year
    1997 1996 1995
    59.93% 65.31% 62.28%

    Loss Ratio
    Distribution losses
    Energy entering the system
    5.69% 5.77% 5.25%

    Capacity Utilisation
    Maximum demand
    Total transformer capacity
    31.43% 30.56% 31.00%

  2. Statistics

    (a) System length, by voltage:

    Voltage Circuit Length Kms
    1997 1996 1995
    400/230 353 347 345
    11000 2,567 2,586 2,549
    33000 245 244 248
    Total 3,185 3,157 3,142

    (b) Circuit length of overhead electric lines, by voltage:

    Voltage Circuit Length Kms
    1997 1996 1995
    400/230 201 201 200
    11000 2,524 2,506 2,489
    33000 243 242 246
    Total 2,968 2,949 2,935

    (c) Circuit length of underground electric lines, by voltage:

    Voltage Circuit Length Kms
    1997 1996 1995
    400/230 152 146 145
    11000 63 60 60
    33000 2 2 2
    Total 217 208 207

    (d) Transformer capacity, (kilovolt amperes): 202362kVA 202585 kVA 196410 kVA

    (e) Maximum demand (Megawatts): 64.227MW 61.906 MW 60.880 MW

    (f) Total electricity supplied from the system,
    (Kilowatt hours): 337,180,625 354,147,550 332,121,977

    (g) Total electricity conveyed through the system,
    on behalf of others (Kilowatt hours): 93,000 Nil Nil

    (h) Total customers 23,486 23,701 22,362



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