Around 1100 homes and businesses are without power across the Southern Highlands, due to that overnight storm.
That includes Bowral, Burradoo, Hill Top and Mittagong.
Endeavour Energy Community Relations Manager Jacqueline Crompton said they're trying to get to the bottom of the problem.
"We do have crews already on scene at Burradoo,
"Customers can expect to have power restored gradually throughout the morning,"Ms. Crompton said.
Image: Endeavour Energy