AGL took advantage of its market power for the substantial purpose of deterring or preventing competing generators from engaging in competitive conduct

This does affect SA to some extent, but personally I am still struck by how much SA Power Networks charges on top of the wholesale price. Well, the wholesale price has contributed to the bulk of the gains over the past year, so maybe that's not entirely fair.

If you want to have a look at wholesale power markets, here's a good place to have a look https://opennem.org.au/energy/sa1. Just be mindful that this is not the retail price, retail price also has GST, a transmission efficiency scaling factor, and the SAPN charges on top.

Also be mindful that people tend to use the most power at around 5pm, which is usually when the price is highest. Your retail pricing takes this into account, because by and large, power meters are not sensitive to what time power is actually used.