Supply and Distribution

Supply

The current Energy supply on Norfolk Island consists of:

  • 6 x 1.0MW diesel generators generating at 415 volts – 3 x CAT and 3 x Cummins gen-sets
  • 1 x 1.2MW / 2.5MWh Tesla BESS
  • Diesel fuel supply on site of approximately 90,000 litres
  • 4 x 750 KvA 415/6600 volt step-up transformers
  • 1 x Standby generator 125 Kw supplying powerhouse essentials and airport
  • 1 x 500 kW load bank for backup shedding of excess PV generated power
  • Low Voltage Main Distribution board of 3000 amps capacity
  • SCADA control system
  • 3 MW distributed rooftop PV & 4.8MWh distributed batteries owned by members of the community.

Distribution

The Islands distribution network includes:

  • A 6600/ 415 Volt supply network
  • 4 High Voltage feeders which carry differential load percentages of the island
  • 44km of high and 44km of low voltage cabling of which approximately 50% is underground.

Meters are mainly digital time-of-use meters.

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