More than 5000 homes in the central North Island were left in darkness after Monday's 6.3 earthquake.
The quake, which struck just before 4pm, caused power cuts which affected around 5600 residential properties in Eketahuna, Alfredton, Palmerston North, Feilding and some as far north as Manaia in Taranaki.
As at 3pm yesterday around 120 customers in these areas were still without power.
Powerco contractors worked well into the evening on Monday to repair damages to its high-voltage network, and completed maintenance around 9pm.
Around that time, power had been restored to most of those homes.