Whangārei mayor Vince Cocurullo says it's "not good enough" that the entire Northland region's power supply routes through just one pylon.
Nearly 100,000 people were left in darkness on Thursday after a power pylon fell over in a field in Glorit in Auckland, effectively cutting off large swathes of the region.
Transpower has launched an investigation into what caused it to fall over, but say they have ruled out sabotage.
People in the North are being asked to conserve power until 10am during the peak hours, and two factories in Whangarei have been off lined to ensure power supplies are not hit with demand.
In a statement released on Friday morning, Transpower said it had decided a temporary tower was the "best option" to ensure the continuation of power supplies while work continued over the weekend.
"Power has now been restored to the majority of residential customers in Northland. However, there is still insufficient power available for everyone in the region at peak times," a spokesperson said.
"Engineering teams have been working through the options to restore full supply to Northland. Transpower had initially hoped to be able to lift the fallen tower to restore one 220kV circuit by Friday afternoon.
"It is now clear the best option is to put in a temporary tower and lift a circuit across to it. This is complicated and complex work, and it is now expected it will be completed late Saturday or early Sunday."
"Having one pylon, one line coming into Northland - it's just not good enough," Cocurullo told AM host Lloyd Burr.
"We need to work on resilience.
"We are asking people to be careful with the power usage between now and 10am, the peak time - just be sensible with the power."
Cocurullo said he understood Transpower was looking to either divert the power through lower-grade lines or put the pylon back up to help with supply and demand over the coming days.
Northpower also warned further outages could be on the cards, if people didn't conserve their power use.
"Over the coming days we will need to be working together to conserve energy and hot water controls will be in place to help keep the power within what we have available, particularly in the morning and evening peak use times - this is 5am until 9am and 4pm until 10 pm.
"We'll keep in touch as things progress but people should be prepared for the possibility of more outages, particularly if power demand exceeds what we have available."
Watch the interview above.
