Power has been restored to thousands of Sydney and Illawarra homes after Friday's intense thunderstorms inflicted widespread damage to more than 40,000 properties.
Crews from Endeavour Energy worked through the night to restore power to thousands of customers but around 725 homes and businesses were without power on Sunday morning after the storm caused nearly 400 electrical hazards.
North Parramatta, Granville, Parramatta, Baulkham Hills and Blacktown were among the areas with homes still in the dark.
However by 5.40pm power had been fully restored to customers.
"We would like to thank all affected customers for their patience and goodwill over the past two days," an Endeavour Energy spokesman said in a statement.
"This has been a great effort from crews who have worked in hot and humid working conditions to repair the widespread storm damage."
Friday's storms left more than 40,000 properties without electricity and nine people needing to be rescued as flash flooding in parts of western Sydney turned intersections to lakes.
In total, around 1100 calls were made to the SES, a spokeswoman told AAP.
Parramatta was one of the hardest-hit suburbs, with the majority of outages and calls to the SES coming from the area.
Two schools were badly damaged, with significant repairs needed for roofs at Parramatta East Public School and Parramatta North Public School, an SES spokeswoman said.
Tropfest organisers were forced to find a different location within Parramatta Park for the short film festival after the storms damaged a stage and screens.