Power is now safely back to 45,000 Endeavour Energy customers since the strong winds hit late Friday afternoon.
Crews have commenced working this morning to restore power to 3000 customers located primarily within the Southern Highlands as well as the Hawkesbury region and the Blue Mountains.
"We would like want to thank affected customers for their patience and understanding as we work to safely restore their power supply," an Endeavour Energy spokesman said.
Check updates at www.endeavourenergy.com.au/outages or download the free Endeavour Energy outage app from the App Store or Google Playstore.
A further update will be provided by Endeavour Energy this afternoon.