Previous post detailed electricity prices of four states in Australia, coming to the conclusion that the electricity prices of South Australia were without any doubt the highest of those four states. In the meanwhile, I came across several other sources that also claimed that South Australia has the highest electricity price for consumers in Australia.
Now imagine my surprise reading the last paragraph of the Wikipedia article on “Energy in Australia” (my emphasis):
It was claimed in 2017 that South Australia had the most expensive electricity in the world  Another analysis claimed that South Australia has the second cheapest electricity in Australia.
South Australia, the second cheapest electricity in Australia?!?!
In my limited dataset with only four states, South Australia had -by far- the highest average electricity price for consumers. This means that South Australia is at best the fourth cheapest in Australia (if all other not listed states were more expensive). How does this “second cheapest electricity” claim square with being at best the fourth most expensive, possibly even the most expensive?