Cordless phones may not work while the power was off, he added, and cell phones should be charged before the shutdown, especially if they would be the only means of communication.
Mr Hutchinson said people could cope with planned events such as this, however. It had been well-signalled and publicised, and offered a good opportunity to look at household emergency plans.
"You should take the opportunity to consider options for unplanned, longer-term outages that can occur when infrastructure is damaged during storm events, that Northland is used to," he said.
"This outage is part of Top Energy's Far North electricity network investment programme, designed to ensure a more reliable supply of electricity to the region. But occasions like this also serve a useful role in helping us all to be more prepared when vital services are disrupted due to a significant event, such as a storm or earthquake."
Go to www.topenergy.co.nz for further details of the outages, and www.getthru.govt.nz for tips on preparing for power outages and real emergencies.
Business as usual
It will be business as usual at Kaitaia's civic centre Te Ahu throughout Sunday's power outage.
Far North District Council community and customer services manager Jacine Warmington said the Council had acquired a generator, which would keep the lights on at the i-Site, museum and Te Ahu Cinema, whose first screening would start at 11am.
The public library does not open on Sundays.