Unison Relationship Manager, Danny Gough, said there may still be some pockets of customers who still have no power due to faults within the low voltage system that Unison may be unaware of.
"We urge any customers who are still without power to call our fault team on 0800 2 86476 so we can dispatch our fault crews and get you back up and running."
A Civil Defence update says Unison crews have worked hard to reconnect customers following the flooding in Napier.
"However, some areas need to be prepared to face a further night without power. While flood waters are slowly subsiding allowing crews access to Unison assets, flood damage is proving more challenging than expected."
The Civil Defence statement also warned residents against eating fruit and vegetables that have come into contact with floodwaters.
"Floodwaters can carry bugs that cause disease from the ground surface and sewerage systems.
"Do not eat any food that had been in contact with flood waters, including fruit and vegetables from your garden. Keep children and pets away from floodwaters and puddles."
The statement reminded Napier residents to keep water use to a minimum.
"Napier's wastewater system is still overloaded. Napier City Council is asking Napier to keep their household wastewater to a minimum. Do not take baths or flush toilets unless absolutely necessary, keep showers short and leave running the dishwasher until tomorrow."
