I would agree retail rates are more relevant than wholesale rates, while at the same time, there's a lot of noise in what the "average" is. If you're exposed to the spot price (Time of Use plans/tariffs) and judicious about when you use electricity, it will be very cheap. If you are not exposed to the spot price, and/or you use a lot of power when rates are higher, your power will be very expensive. I've spent ~30 minutes looking for a reliable indicator of retail rates for residential customers, and I can't find one other than customer surveys. I did find a release from the SA premier indicating $350 million AUD in electrical energy savings over the last two years [1]. Also, this post [2] asserts SA to have the lowest wholesale rates (per Australian Energy Market Operator/AEMO) in Australia by early next year.
I rescind my statement from my higher level comment that "They have the lowest energy costs in Australia"; the data is incomplete, there are multiple factors at play between generators, transmission, and retail supplier cost variations, and it was too broad of a statement considering all of the factors involved (when I should've referred specifically to wholesale rates influenced by renewables).
I rescind my statement from my higher level comment that "They have the lowest energy costs in Australia"; the data is incomplete, there are multiple factors at play between generators, transmission, and retail supplier cost variations, and it was too broad of a statement considering all of the factors involved (when I should've referred specifically to wholesale rates influenced by renewables).
[1] https://www.premier.sa.gov.au/news/media-releases/news/bang-...
[2] https://indaily.com.au/news/business/2021/05/10/rise-of-sa-r...