Thousands of rural Cantabrians remain without power, and many will not be reconnected until Tuesday, electricity company Orion says.
Four thousand customers from areas including Springfield, Darfield and Greendale have been without power since gale force winds struck the area last week.
At its peak, 28,000 customers lost their power after the storm.
"We are continuing to move in an east to west direction to restore supply to affected customers,'' Orion chief executive Rob Jamieson said.
"Our priority remains to reconnect the areas with the most customers first. We are also continuing to work with Selwyn District Council to prioritise water supplies.''