Around 7.30 Butler said "a little over a thousand" properties were still off the grid.
These had since been restored, too.
The outage came at an inconvenient time for Vector. The company had temporarily disabled its app after it was realised a glitch meant the personal information of up to 35,000 customers might have been accessed by others.
The glitch has made customers' names, email addresses, physical locations and phone numbers accessible to anyone who has downloaded the app.
Customers were therefore not able to report their outage through the mobile app.
Extra staff had been rostered on at the call centre to help with the extra demand, Butler said.