Accelerate the World's Transition to Sustainable Energy - to fight Anthropogenic Climate Change, page-33539

A.
Electricity is ring mained so they can isolate and provide power from opposite direction.

B.

The average outage time for Australian electricity transmission in 2022 may be several hours or even days, depending on the severity of the outage and the location.

It’s also worth noting that the Australian Energy Market Operator (AEMO) has published reports on the 2016 South Australian blackout, which was triggered by severe weather and caused a 2-minute period of six voltage dips. This event highlights the importance of weatherproofing the electricity grid to minimize the impact of outages.

In summary, while the average outage time for Australian electricity transmission in 2022 is not explicitly stated, the search results suggest that outages can last for several hours or even days, depending on the severity of the outage and the location.