Power has been restored to almost every home in Christchurch and most primary health care services have re-opened.
About 30,000 homes were without power in the immediate aftermath of the magnitude-7.1 earthquake.
Lines company Orion says few customers remain without power.
Chief executive Roger Sutton said on Saturday contractors had been working around the clock to restore services, and had all but achieved that.
Port of Lyttleton 'operating normally'
Port of Lyttleton says it has managed to process its usual workload of about 5000 containers a week.
However, more quake damage continues to be found and repairs are expected to cost tens of millions of dollars.
Chief executive Peter Davie says the damage is causing only slight operational constraints and supplies are still getting to affected areas.