An Endeavour Energy spokesman said 76 customers in Maraylya have been without power since 10.25am.
The cause was a tree branch that came down on powerlines on Mitchell Road, Cattai.
“Luckily crews were standing by in the area and have just commenced switching and repairs,” he said.
On Wednesday night a total of 697 households lost power in the Hawkesbury, in Agnes Banks (254), Nelson (167), St Albans (148) and Lower Macdonald (128).
These were reported to have been restored last night.