By yesterday afternoon most of the electricity faults had been addressed in Ballarat and power had returned to Creswick and Clunes.

Powercor spokesman Hugo Armstrong said about 18,000 people were without power over the weekend.

"That's from Ballarat to Bacchus Marsh to Daylesford, Maryborough and down to Meredith."

Hundreds of homes in the region remained disconnected last night including about 200 in Ballarat, 100 in Daylesford and 50 in Myrniong.

Mr Armstrong said many large trees had fallen on power lines and had caused extensive damage.

He said Powercor staff had worked through the weekend to restore power to households but accessing damaged power lines had been difficult.

"Access has been one of the main challenges, in particular getting into rural areas, through floods and over soft ground," he said.

More than 5000 homes in the Ballarat and Daylesford regions were without power on Saturday afternoon after storms caused trees to fall on power lines.

Powercor reported trees had come down on power lines near Clarkes Hill about 3.15pm.

Almost 7000 customers in the Ballarat region lost power due to the storms on Saturday.

Radio and television transmissions were also cut to Ballarat over the weekend as the storms wrought havoc for broadcasters.

Commercial stations, SBS and the ABC were unavailable in Ballarat from Saturday afternoon. In an update on its website, ABC Ballarat reported storm activity had affected a transmission facility which broadcasts ABC1, ABC2,

Southern Cross, Prime and SBS television signals.

ABC transmission spokesman Adrian Potter said the Lookout Hill transmission facility in Ballarat was one of the worst affected in Victoria.

Football followers were hurt with Southern Cross and Prime out during parts of the AFL finals broadcasts.