Power supply has been restored to the towns earlier affected by the outage.
Towns throughout the Mid North are without power with supply possibly not being restored until Monday night.
Almost 3800 customers are affected by the outage.
Locations impacted include:
Amyton, Appila, Bangor, Baroota, Belton, Black Rock, Booleroo Centre, Bungama, Carrieton, Cavenagh, Coomooroo, Dawson, Erskine, Eurelia, Germein Bay, Hammond, Johnburgh, Mambray Creek, Melrose, Minburra Plain, Minvalara, Moockra, Morchard, Murray Town, Napperby, Nelshaby, Orroroo, Pekina, Port Flinders, Port Germein, Stone Hut, Tarcowie, Telowie, Terka, Walloway, Warnertown, Weeroona Island, Willowie, Wilmington, Wirrabara, Wongyarra, Yalpara, Yanyarrie, Yatina