Powernet is investigating the cause of a ''cable fault'' which left close to 800 Wakatipu households without power on Tuesday night.
A company spokeswoman said a total of 781 customers were variously affected between 6.09pm and 10.03pm as temperatures plummeted and snow started falling in the resort.
The customers were located in Remarkables Park, Five Mile, Glenda Dr and the Shotover Country subdivision, all on the Electricity South Island network.
The Kawarau Bridge, near Kelvin Heights, was also affected.
A total of 555 customers were without power for almost four hours, while 226 customers were disconnected to allow the fault to be repaired - 99 of those for about three hours and 127 for about two hours.
Another 52 customers were without power for most of the day after a car hit a power pole at Kelvin Heights.
Aurora Energy marketing and communications manager Amelia Currier said power was cut just after 8.20am.
It was restored at 3.15pm.
A police media spokeswoman said the vehicle, which had to be towed, hit the pole on Loop Rd at 7.17am. A street light
was ''fully flattened'' and blocked a driveway, the spokeswoman said.
A small section of Loop Rd was closed while the power line was dealt with, but it did not appear as though anyone was injured as a result of the crash.
