The property is supplied by a long rural feeder that also serves nearby coastal towns, so the system was designed for steady everyday supply and for the extra draw of major events. Maximum demand during peak competitions approaches four megavolt amperes, about twice the usual combined load of Bawley Point and Kioloa. To meet that reliably the upstream eleven kilovolt feeder was strengthened and given a second path, and the site runs a hybrid system that can operate independently when required.
Everyday load is carried quietly by on site generation and storage. Solar provides about one point three megawatts of capacity and batteries store approximately two point four megawatt hours. Three high voltage generators provide around four point three MVA of prime capacity for peaks and maintenance windows and a ComAp control platform manages the changeovers so they are not noticed. Power leaves a central powerhouse at nine hundred and sixty volts for long runs that extend beyond two kilometres. Auto tap changing transformers step down to four hundred and thirty three volts and two hundred and forty volts near where power is used. Fuel security is handled with a containerised seventy thousand litre diesel store and metered distribution. Sports lighting is commissioned to competition levels without glare and plant rooms are screened so the presentation of the precinct stays calm.
In practice the result is reliability rather than visible equipment. Baseload runs steadily with regular solar export on clear days. Event spikes are absorbed without voltage flicker. If the grid is disturbed the system islands and keeps pumps, controls, communications and lighting operating as it did during the Currowan season. Losses on long runs are reduced by the nine hundred and sixty volt backbone and automatic regulation at the step downs, which keeps power even across arenas, stables, accommodation and workshops while containing noise and clutter.
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