Cooper's office, Moore County and Duke Energy, officials said Wednesday.
At its peak, around 45,000 Moore County customers were left without power, Duke Energy said.
Duke Energy said the vandalism destroyed large and vital pieces of equipment, which needed to be replaced.
The restoration of power led officials on Wednesday to announce that the curfew will be lifted at 5 a.m. Thursday.
There have been no confirmed deaths due to the power outage, Moore County Director of Public Safety Bryan Phillips said.