Essential Energy manages the poles and wires across 95 per cent of the State and has crews ready to respond to unplanned supply interruptions 24 hours a day, seven days a week.

Regional manager Southern, Steven Ilitch, said that while the overhead electricity network was usually strong and reliable, it was also at the mercy of the weather.

"We'll dispatch crews to restore electricity as soon as possible in the event of an unplanned supply interruption bringing in extra crews when severe winds, rain, hail and lightning, flash flooding or bushfires cause extensive damage across large areas," Mr Ilitch said.

"Just as we're at the ready 24/7, we're asking our customers to also be prepared and report any downed or low powerlines or damaged infrastructure and have our emergency number on hand 13 20 80.

"Stay at least eight metres from fallen powerlines and any other object they may be touching, treat wires on the ground, or low hanging lines, as live and dangerous and always exercise extreme caution when cleaning up after a storm, as damaged lines may be hidden by debris."

Mr Ilitch said that when a large storm or other event damaged the electricity network, Essential Energy workers concentrated on repairing and re-energising major powerlines first to restore electricity to the majority of customers.

"Once this is completed, field crews then target customers' individual faults and problems, such as broken house service lines," he said.

For more information on electrical safety during storms, visit essentialenergy.com.au/safety or call Essential Energy on 13 23 91.