Eastbank Rd remains closed as Horizon Networks tend to fallen power lines.
At one point, nearly 5000 customers were without power but Horizon Networks said power had since been restored to 2980 customers.
It attributed the widespread outages to the severe weather.
"Due to the treacherous conditions, access to the network is limited however we will continue to restore supply to customers as the conditions allow.
"Horizon wishes to advise customers that initial damage reports indicate that some customers may remain without power overnight."
Horizon Networks owns, manages and operates the electricity network serving the Eastern Bay of Plenty region.